/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 03:20:48,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 03:20:49,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 03:20:49,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 03:20:49,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 03:20:49,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 03:20:49,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 03:20:49,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 03:20:49,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 03:20:49,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 03:20:49,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 03:20:49,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 03:20:49,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 03:20:49,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 03:20:49,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 03:20:49,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 03:20:49,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 03:20:49,081 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 03:20:49,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 03:20:49,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 03:20:49,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 03:20:49,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 03:20:49,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 03:20:49,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 03:20:49,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 03:20:49,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 03:20:49,082 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 03:20:49,082 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 03:20:49,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 03:20:49,082 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 03:20:49,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 03:20:49,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 03:20:49,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 03:20:49,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 03:20:49,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 03:20:49,246 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 03:20:49,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound5.c [2022-03-18 03:20:49,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76af4da7d/facb9331cab7461e9b75ff261879e077/FLAG4d9211cf3 [2022-03-18 03:20:49,580 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 03:20:49,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound5.c [2022-03-18 03:20:49,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76af4da7d/facb9331cab7461e9b75ff261879e077/FLAG4d9211cf3 [2022-03-18 03:20:50,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76af4da7d/facb9331cab7461e9b75ff261879e077 [2022-03-18 03:20:50,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 03:20:50,017 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 03:20:50,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 03:20:50,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 03:20:50,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 03:20:50,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec849f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50, skipping insertion in model container [2022-03-18 03:20:50,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 03:20:50,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 03:20:50,167 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_valuebound5.c[538,551] [2022-03-18 03:20:50,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 03:20:50,196 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 03:20:50,214 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_valuebound5.c[538,551] [2022-03-18 03:20:50,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 03:20:50,241 INFO L208 MainTranslator]: Completed translation [2022-03-18 03:20:50,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50 WrapperNode [2022-03-18 03:20:50,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 03:20:50,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 03:20:50,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 03:20:50,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 03:20:50,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 03:20:50,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 03:20:50,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 03:20:50,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 03:20:50,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50" (1/1) ... [2022-03-18 03:20:50,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 03:20:50,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:20:50,312 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) [2022-03-18 03:20:50,314 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 [2022-03-18 03:20:50,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 03:20:50,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 03:20:50,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 03:20:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 03:20:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 03:20:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 03:20:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 03:20:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 03:20:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 03:20:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 03:20:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 03:20:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 03:20:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 03:20:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 03:20:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 03:20:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 03:20:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 03:20:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 03:20:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 03:20:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 03:20:50,395 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 03:20:50,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 03:20:50,495 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 03:20:50,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 03:20:50,499 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 03:20:50,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 03:20:50 BoogieIcfgContainer [2022-03-18 03:20:50,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 03:20:50,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 03:20:50,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 03:20:50,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 03:20:50,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 03:20:50" (1/3) ... [2022-03-18 03:20:50,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a80bfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 03:20:50, skipping insertion in model container [2022-03-18 03:20:50,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:20:50" (2/3) ... [2022-03-18 03:20:50,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a80bfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 03:20:50, skipping insertion in model container [2022-03-18 03:20:50,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 03:20:50" (3/3) ... [2022-03-18 03:20:50,518 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound5.c [2022-03-18 03:20:50,521 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 03:20:50,521 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 03:20:50,551 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 03:20:50,564 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 [2022-03-18 03:20:50,565 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 03:20:50,573 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) [2022-03-18 03:20:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-18 03:20:50,578 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:20:50,579 INFO L500 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] [2022-03-18 03:20:50,579 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:20:50,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:20:50,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times [2022-03-18 03:20:50,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:50,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [704102056] [2022-03-18 03:20:50,608 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:20:50,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 2 times [2022-03-18 03:20:50,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:20:50,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131064573] [2022-03-18 03:20:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:20:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:20:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 03:20:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:50,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 03:20:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:50,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 03:20:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 03:20:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 03:20:50,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:20:50,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131064573] [2022-03-18 03:20:50,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131064573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:50,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:50,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 03:20:50,751 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:20:50,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [704102056] [2022-03-18 03:20:50,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [704102056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:50,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:50,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 03:20:50,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171678418] [2022-03-18 03:20:50,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:20:50,755 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 03:20:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 03:20:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 03:20:50,777 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) [2022-03-18 03:20:50,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:20:50,856 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2022-03-18 03:20:50,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 03:20:50,858 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 [2022-03-18 03:20:50,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:20:50,862 INFO L225 Difference]: With dead ends: 69 [2022-03-18 03:20:50,863 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 03:20:50,865 INFO L911 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 [2022-03-18 03:20:50,867 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-18 03:20:50,868 INFO L913 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] [2022-03-18 03:20:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 03:20:50,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-18 03:20:50,897 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) [2022-03-18 03:20:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-03-18 03:20:50,900 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2022-03-18 03:20:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:20:50,900 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-03-18 03:20:50,900 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) [2022-03-18 03:20:50,901 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-03-18 03:20:50,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-18 03:20:50,902 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:20:50,902 INFO L500 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] [2022-03-18 03:20:50,902 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 03:20:50,902 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:20:50,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:20:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times [2022-03-18 03:20:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:50,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [528079518] [2022-03-18 03:20:50,904 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:20:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 2 times [2022-03-18 03:20:50,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:20:50,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965034268] [2022-03-18 03:20:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:20:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:20:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 03:20:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 03:20:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 03:20:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 03:20:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 03:20:51,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:20:51,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965034268] [2022-03-18 03:20:51,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965034268] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:51,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:51,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 03:20:51,056 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:20:51,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [528079518] [2022-03-18 03:20:51,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [528079518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:51,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:51,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 03:20:51,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171160945] [2022-03-18 03:20:51,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:20:51,058 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 03:20:51,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:51,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 03:20:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 03:20:51,059 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) [2022-03-18 03:20:51,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:20:51,236 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-03-18 03:20:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 03:20:51,238 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 [2022-03-18 03:20:51,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:20:51,240 INFO L225 Difference]: With dead ends: 46 [2022-03-18 03:20:51,240 INFO L226 Difference]: Without dead ends: 44 [2022-03-18 03:20:51,241 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 03:20:51,244 INFO L912 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 [2022-03-18 03:20:51,245 INFO L913 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] [2022-03-18 03:20:51,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-18 03:20:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-18 03:20:51,263 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) [2022-03-18 03:20:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-03-18 03:20:51,265 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2022-03-18 03:20:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:20:51,266 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-03-18 03:20:51,266 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) [2022-03-18 03:20:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-03-18 03:20:51,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-18 03:20:51,267 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:20:51,267 INFO L500 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] [2022-03-18 03:20:51,267 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 03:20:51,267 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:20:51,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:20:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times [2022-03-18 03:20:51,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:51,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1176621923] [2022-03-18 03:20:51,275 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:20:51,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 2 times [2022-03-18 03:20:51,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:20:51,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996891527] [2022-03-18 03:20:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:20:51,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:20:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 03:20:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 03:20:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 03:20:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 03:20:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 03:20:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:20:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 03:20:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:20:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996891527] [2022-03-18 03:20:51,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996891527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:51,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:51,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 03:20:51,398 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:20:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1176621923] [2022-03-18 03:20:51,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1176621923] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:51,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:51,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 03:20:51,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365631775] [2022-03-18 03:20:51,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:20:51,399 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 03:20:51,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 03:20:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 03:20:51,400 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) [2022-03-18 03:20:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:20:51,589 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-03-18 03:20:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 03:20:51,589 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 [2022-03-18 03:20:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:20:51,591 INFO L225 Difference]: With dead ends: 50 [2022-03-18 03:20:51,591 INFO L226 Difference]: Without dead ends: 48 [2022-03-18 03:20:51,591 INFO L911 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 [2022-03-18 03:20:51,594 INFO L912 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 [2022-03-18 03:20:51,598 INFO L913 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] [2022-03-18 03:20:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-18 03:20:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-03-18 03:20:51,613 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) [2022-03-18 03:20:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-03-18 03:20:51,614 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2022-03-18 03:20:51,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:20:51,614 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-03-18 03:20:51,615 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) [2022-03-18 03:20:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-03-18 03:20:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-18 03:20:51,615 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:20:51,615 INFO L500 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] [2022-03-18 03:20:51,616 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 03:20:51,616 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:20:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:20:51,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times [2022-03-18 03:20:51,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:51,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1949388117] [2022-03-18 03:20:51,617 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:20:51,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 2 times [2022-03-18 03:20:51,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:20:51,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786011841] [2022-03-18 03:20:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:20:51,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:20:51,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:20:51,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132326522] [2022-03-18 03:20:51,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:20:51,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:20:51,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:20:51,632 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) [2022-03-18 03:20:51,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 03:20:51,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:20:51,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:20:51,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 03:20:51,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:20:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-18 03:20:51,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 03:20:51,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:20:51,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786011841] [2022-03-18 03:20:51,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:20:51,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132326522] [2022-03-18 03:20:51,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132326522] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:51,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:51,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 03:20:51,827 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:20:51,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1949388117] [2022-03-18 03:20:51,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1949388117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:51,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:51,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 03:20:51,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22568577] [2022-03-18 03:20:51,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:20:51,831 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 03:20:51,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 03:20:51,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 03:20:51,832 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 03:20:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:20:51,885 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-03-18 03:20:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 03:20:51,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-03-18 03:20:51,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:20:51,888 INFO L225 Difference]: With dead ends: 69 [2022-03-18 03:20:51,888 INFO L226 Difference]: Without dead ends: 55 [2022-03-18 03:20:51,888 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 03:20:51,890 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 03:20:51,891 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 157 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 03:20:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-18 03:20:51,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-03-18 03:20:51,903 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) [2022-03-18 03:20:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-03-18 03:20:51,908 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2022-03-18 03:20:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:20:51,909 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-03-18 03:20:51,909 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 03:20:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-03-18 03:20:51,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 03:20:51,911 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:20:51,911 INFO L500 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] [2022-03-18 03:20:51,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 03:20:52,130 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 [2022-03-18 03:20:52,131 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:20:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:20:52,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 1 times [2022-03-18 03:20:52,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:52,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [930179041] [2022-03-18 03:20:52,133 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:20:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 2 times [2022-03-18 03:20:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:20:52,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95130553] [2022-03-18 03:20:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:20:52,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:20:52,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:20:52,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517421224] [2022-03-18 03:20:52,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:20:52,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:20:52,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:20:52,168 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) [2022-03-18 03:20:52,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 03:20:52,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:20:52,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:20:52,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 03:20:52,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:20:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-18 03:20:52,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:20:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 03:20:52,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:20:52,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95130553] [2022-03-18 03:20:52,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:20:52,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517421224] [2022-03-18 03:20:52,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517421224] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 03:20:52,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 03:20:52,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2022-03-18 03:20:52,623 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:20:52,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [930179041] [2022-03-18 03:20:52,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [930179041] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:52,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:52,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 03:20:52,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441564844] [2022-03-18 03:20:52,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:20:52,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 03:20:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 03:20:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-18 03:20:52,626 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 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) [2022-03-18 03:20:52,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:20:52,673 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2022-03-18 03:20:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 03:20:52,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 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 45 [2022-03-18 03:20:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:20:52,674 INFO L225 Difference]: With dead ends: 68 [2022-03-18 03:20:52,674 INFO L226 Difference]: Without dead ends: 66 [2022-03-18 03:20:52,675 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-18 03:20:52,675 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 03:20:52,675 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 178 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 03:20:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-18 03:20:52,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2022-03-18 03:20:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 38 states have internal predecessors, (43), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-18 03:20:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2022-03-18 03:20:52,684 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 45 [2022-03-18 03:20:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:20:52,684 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2022-03-18 03:20:52,685 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 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) [2022-03-18 03:20:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2022-03-18 03:20:52,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 03:20:52,685 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:20:52,685 INFO L500 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] [2022-03-18 03:20:52,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 03:20:52,899 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 [2022-03-18 03:20:52,900 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:20:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:20:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 1 times [2022-03-18 03:20:52,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:52,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [441813102] [2022-03-18 03:20:52,900 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:20:52,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 2 times [2022-03-18 03:20:52,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:20:52,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304894886] [2022-03-18 03:20:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:20:52,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:20:52,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:20:52,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936447749] [2022-03-18 03:20:52,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:20:52,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:20:52,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:20:52,922 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) [2022-03-18 03:20:52,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 03:20:52,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:20:52,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:20:52,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-18 03:20:52,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:20:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-18 03:20:53,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:20:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-18 03:20:53,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:20:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304894886] [2022-03-18 03:20:53,281 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:20:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936447749] [2022-03-18 03:20:53,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936447749] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 03:20:53,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 03:20:53,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-18 03:20:53,282 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:20:53,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [441813102] [2022-03-18 03:20:53,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [441813102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:53,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:53,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 03:20:53,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188834468] [2022-03-18 03:20:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:20:53,287 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 03:20:53,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:53,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 03:20:53,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-18 03:20:53,287 INFO L87 Difference]: Start difference. First operand 64 states and 80 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) [2022-03-18 03:20:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:20:53,418 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2022-03-18 03:20:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 03:20:53,419 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 [2022-03-18 03:20:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:20:53,420 INFO L225 Difference]: With dead ends: 76 [2022-03-18 03:20:53,420 INFO L226 Difference]: Without dead ends: 74 [2022-03-18 03:20:53,420 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 03:20:53,420 INFO L912 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:20:53,421 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 141 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:20:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-03-18 03:20:53,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-03-18 03:20:53,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 40 states have (on average 1.175) internal successors, (47), 43 states have internal predecessors, (47), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-03-18 03:20:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2022-03-18 03:20:53,431 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 55 [2022-03-18 03:20:53,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:20:53,431 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2022-03-18 03:20:53,431 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) [2022-03-18 03:20:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2022-03-18 03:20:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 03:20:53,432 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:20:53,432 INFO L500 BasicCegarLoop]: trace histogram [6, 5, 5, 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, 1, 1, 1, 1, 1] [2022-03-18 03:20:53,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 03:20:53,671 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 [2022-03-18 03:20:53,671 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:20:53,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:20:53,671 INFO L85 PathProgramCache]: Analyzing trace with hash -682689219, now seen corresponding path program 1 times [2022-03-18 03:20:53,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:53,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1115239179] [2022-03-18 03:20:53,672 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:20:53,672 INFO L85 PathProgramCache]: Analyzing trace with hash -682689219, now seen corresponding path program 2 times [2022-03-18 03:20:53,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:20:53,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599280731] [2022-03-18 03:20:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:20:53,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:20:53,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:20:53,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262266040] [2022-03-18 03:20:53,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:20:53,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:20:53,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:20:53,707 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) [2022-03-18 03:20:53,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 03:20:53,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:20:53,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:20:53,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 03:20:53,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:20:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-18 03:20:53,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 03:20:53,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:20:53,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599280731] [2022-03-18 03:20:53,864 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:20:53,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262266040] [2022-03-18 03:20:53,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262266040] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:53,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:53,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 03:20:53,864 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:20:53,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1115239179] [2022-03-18 03:20:53,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1115239179] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:53,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:53,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 03:20:53,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288059366] [2022-03-18 03:20:53,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:20:53,865 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 03:20:53,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:53,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 03:20:53,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 03:20:53,865 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 03:20:53,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:20:53,908 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2022-03-18 03:20:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 03:20:53,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2022-03-18 03:20:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:20:53,910 INFO L225 Difference]: With dead ends: 79 [2022-03-18 03:20:53,910 INFO L226 Difference]: Without dead ends: 72 [2022-03-18 03:20:53,911 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 03:20:53,911 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 03:20:53,911 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 03:20:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-18 03:20:53,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-03-18 03:20:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.146341463414634) internal successors, (47), 44 states have internal predecessors, (47), 20 states have call successors, (20), 10 states have call predecessors, (20), 9 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 03:20:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-03-18 03:20:53,920 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 56 [2022-03-18 03:20:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:20:53,920 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-03-18 03:20:53,920 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 03:20:53,920 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-03-18 03:20:53,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 03:20:53,921 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:20:53,921 INFO L500 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] [2022-03-18 03:20:53,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 03:20:54,151 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 [2022-03-18 03:20:54,152 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:20:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:20:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 1 times [2022-03-18 03:20:54,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:54,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [314994535] [2022-03-18 03:20:54,153 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:20:54,153 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 2 times [2022-03-18 03:20:54,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:20:54,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175966228] [2022-03-18 03:20:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:20:54,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:20:54,160 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:20:54,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019889370] [2022-03-18 03:20:54,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:20:54,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:20:54,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:20:54,161 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) [2022-03-18 03:20:54,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 03:20:54,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:20:54,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:20:54,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-18 03:20:54,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:20:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-03-18 03:20:54,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:20:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-03-18 03:20:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:20:59,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175966228] [2022-03-18 03:20:59,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:20:59,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019889370] [2022-03-18 03:20:59,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019889370] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:20:59,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:20:59,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-03-18 03:20:59,190 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:20:59,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [314994535] [2022-03-18 03:20:59,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [314994535] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:20:59,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:20:59,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 03:20:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878373650] [2022-03-18 03:20:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:20:59,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 03:20:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:59,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 03:20:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-18 03:20:59,191 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-18 03:20:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:20:59,359 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2022-03-18 03:20:59,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 03:20:59,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2022-03-18 03:20:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:20:59,360 INFO L225 Difference]: With dead ends: 135 [2022-03-18 03:20:59,361 INFO L226 Difference]: Without dead ends: 108 [2022-03-18 03:20:59,361 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-03-18 03:20:59,361 INFO L912 BasicCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:20:59,361 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 326 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:20:59,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-18 03:20:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2022-03-18 03:20:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.140625) internal successors, (73), 67 states have internal predecessors, (73), 27 states have call successors, (27), 15 states have call predecessors, (27), 14 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-03-18 03:20:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2022-03-18 03:20:59,372 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 75 [2022-03-18 03:20:59,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:20:59,372 INFO L478 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2022-03-18 03:20:59,372 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-18 03:20:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2022-03-18 03:20:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-18 03:20:59,373 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:20:59,373 INFO L500 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] [2022-03-18 03:20:59,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 03:20:59,573 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 [2022-03-18 03:20:59,574 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:20:59,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:20:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 3 times [2022-03-18 03:20:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:20:59,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1769407608] [2022-03-18 03:20:59,575 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:20:59,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 4 times [2022-03-18 03:20:59,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:20:59,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350301450] [2022-03-18 03:20:59,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:20:59,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:20:59,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:20:59,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10753674] [2022-03-18 03:20:59,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 03:20:59,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:20:59,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:20:59,588 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) [2022-03-18 03:20:59,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 03:20:59,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 03:20:59,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:20:59,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 03:20:59,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:20:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-03-18 03:20:59,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:21:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-03-18 03:21:01,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:21:01,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350301450] [2022-03-18 03:21:01,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:21:01,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10753674] [2022-03-18 03:21:01,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10753674] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:21:01,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:21:01,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-03-18 03:21:01,459 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:21:01,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1769407608] [2022-03-18 03:21:01,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1769407608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:21:01,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:21:01,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 03:21:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770638359] [2022-03-18 03:21:01,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:21:01,459 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 03:21:01,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:21:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 03:21:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 03:21:01,460 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-18 03:21:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:21:01,573 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2022-03-18 03:21:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 03:21:01,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 80 [2022-03-18 03:21:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:21:01,574 INFO L225 Difference]: With dead ends: 133 [2022-03-18 03:21:01,574 INFO L226 Difference]: Without dead ends: 110 [2022-03-18 03:21:01,575 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-03-18 03:21:01,575 INFO L912 BasicCegarLoop]: 53 mSDtfsCounter, 11 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:21:01,575 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 265 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:21:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-18 03:21:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-03-18 03:21:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 66 states have (on average 1.106060606060606) internal successors, (73), 70 states have internal predecessors, (73), 28 states have call successors, (28), 16 states have call predecessors, (28), 15 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-03-18 03:21:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2022-03-18 03:21:01,584 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 80 [2022-03-18 03:21:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:21:01,584 INFO L478 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2022-03-18 03:21:01,584 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-18 03:21:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2022-03-18 03:21:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-18 03:21:01,585 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:21:01,585 INFO L500 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] [2022-03-18 03:21:01,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 03:21:01,800 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 [2022-03-18 03:21:01,801 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:21:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:21:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 1 times [2022-03-18 03:21:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:21:01,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [720541821] [2022-03-18 03:21:01,802 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:21:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 2 times [2022-03-18 03:21:01,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:21:01,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210963941] [2022-03-18 03:21:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:21:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:21:01,818 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:21:01,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456815709] [2022-03-18 03:21:01,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:21:01,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:21:01,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:21:01,819 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) [2022-03-18 03:21:01,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 03:21:01,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:21:01,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:21:01,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-18 03:21:01,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:21:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 45 proven. 32 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-18 03:21:02,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:21:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 45 proven. 32 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-18 03:21:13,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:21:13,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210963941] [2022-03-18 03:21:13,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:21:13,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456815709] [2022-03-18 03:21:13,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456815709] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:21:13,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:21:13,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2022-03-18 03:21:13,834 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:21:13,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [720541821] [2022-03-18 03:21:13,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [720541821] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:21:13,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:21:13,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 03:21:13,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948776943] [2022-03-18 03:21:13,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:21:13,835 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 03:21:13,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:21:13,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 03:21:13,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-03-18 03:21:13,835 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 14 states, 13 states have (on average 2.0) 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) [2022-03-18 03:21:15,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:21:15,037 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2022-03-18 03:21:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 03:21:15,037 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) 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 [2022-03-18 03:21:15,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:21:15,038 INFO L225 Difference]: With dead ends: 116 [2022-03-18 03:21:15,038 INFO L226 Difference]: Without dead ends: 88 [2022-03-18 03:21:15,038 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2022-03-18 03:21:15,039 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 17 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 03:21:15,039 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 342 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 03:21:15,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-03-18 03:21:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-03-18 03:21:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 55 states have internal predecessors, (58), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-18 03:21:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2022-03-18 03:21:15,046 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 86 [2022-03-18 03:21:15,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:21:15,047 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2022-03-18 03:21:15,047 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) 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) [2022-03-18 03:21:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2022-03-18 03:21:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-18 03:21:15,047 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:21:15,047 INFO L500 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-18 03:21:15,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-18 03:21:15,263 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 [2022-03-18 03:21:15,264 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:21:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:21:15,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1885636697, now seen corresponding path program 5 times [2022-03-18 03:21:15,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:21:15,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1763189310] [2022-03-18 03:21:15,264 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:21:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1885636697, now seen corresponding path program 6 times [2022-03-18 03:21:15,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:21:15,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579833987] [2022-03-18 03:21:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:21:15,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:21:15,276 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:21:15,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330199326] [2022-03-18 03:21:15,276 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 03:21:15,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:21:15,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:21:15,292 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) [2022-03-18 03:21:15,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 03:21:15,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-18 03:21:15,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:21:15,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-18 03:21:15,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:21:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 55 proven. 9 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-03-18 03:21:28,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:21:49,994 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_main_~B~0 4294967296))) (or (not (= c_main_~d~0 (* c_main_~p~0 .cse0))) (let ((.cse4 (= (mod c_main_~d~0 2) 0)) (.cse11 (mod c_main_~A~0 4294967296)) (.cse12 (div c_main_~d~0 2)) (.cse13 (* (- 1) c_main_~r~0))) (let ((.cse2 (+ .cse11 .cse12 .cse13 1)) (.cse5 (+ .cse11 .cse12 .cse13)) (.cse6 (not .cse4)) (.cse7 (div c_main_~p~0 2)) (.cse1 (= (mod c_main_~p~0 2) 0)) (.cse8 (< c_main_~p~0 0))) (and (or .cse1 (let ((.cse3 (* (+ c_main_~q~0 .cse7 1) .cse0))) (and (or (= .cse2 .cse3) .cse4) (or (= .cse5 .cse3) .cse6))) (not .cse8)) (or (let ((.cse9 (* (+ c_main_~q~0 .cse7) .cse0)) (.cse10 (< c_main_~d~0 0))) (and (or (= .cse2 .cse9) .cse4 (not .cse10)) (or (= .cse5 .cse9) (and .cse10 .cse6)))) (and (not .cse1) .cse8))))))) is different from true [2022-03-18 03:22:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 45 proven. 11 refuted. 0 times theorem prover too weak. 207 trivial. 8 not checked. [2022-03-18 03:22:51,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:22:51,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579833987] [2022-03-18 03:22:51,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:22:51,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330199326] [2022-03-18 03:22:51,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330199326] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:22:51,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:22:51,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2022-03-18 03:22:51,342 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:22:51,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1763189310] [2022-03-18 03:22:51,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1763189310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:22:51,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:22:51,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 03:22:51,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951980051] [2022-03-18 03:22:51,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:22:51,343 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 03:22:51,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:22:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 03:22:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=142, Unknown=1, NotChecked=24, Total=210 [2022-03-18 03:22:51,344 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-18 03:22:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:22:51,792 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2022-03-18 03:22:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 03:22:51,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 92 [2022-03-18 03:22:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:22:51,793 INFO L225 Difference]: With dead ends: 112 [2022-03-18 03:22:51,793 INFO L226 Difference]: Without dead ends: 100 [2022-03-18 03:22:51,794 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 167 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=56, Invalid=187, Unknown=1, NotChecked=28, Total=272 [2022-03-18 03:22:51,794 INFO L912 BasicCegarLoop]: 35 mSDtfsCounter, 25 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 03:22:51,794 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 259 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 03:22:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-18 03:22:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-03-18 03:22:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 59 states have (on average 1.11864406779661) internal successors, (66), 63 states have internal predecessors, (66), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 03:22:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2022-03-18 03:22:51,802 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 92 [2022-03-18 03:22:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:22:51,803 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2022-03-18 03:22:51,803 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-18 03:22:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2022-03-18 03:22:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-18 03:22:51,805 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:22:51,805 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-18 03:22:51,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 03:22:52,005 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 [2022-03-18 03:22:52,006 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:22:52,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:22:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash -278824083, now seen corresponding path program 7 times [2022-03-18 03:22:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:22:52,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [439834523] [2022-03-18 03:22:52,007 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:22:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash -278824083, now seen corresponding path program 8 times [2022-03-18 03:22:52,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:22:52,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055944547] [2022-03-18 03:22:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:22:52,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:22:52,013 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:22:52,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900067105] [2022-03-18 03:22:52,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:22:52,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:22:52,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:22:52,014 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:22:52,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-18 03:22:52,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:22:52,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:22:52,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 03:22:52,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:22:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-03-18 03:22:52,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:22:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-03-18 03:22:54,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:22:54,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055944547] [2022-03-18 03:22:54,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:22:54,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900067105] [2022-03-18 03:22:54,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900067105] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:22:54,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:22:54,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-03-18 03:22:54,724 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:22:54,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [439834523] [2022-03-18 03:22:54,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [439834523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:22:54,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:22:54,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 03:22:54,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547872444] [2022-03-18 03:22:54,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:22:54,724 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 03:22:54,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:22:54,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 03:22:54,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-18 03:22:54,725 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-03-18 03:22:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:22:55,064 INFO L93 Difference]: Finished difference Result 177 states and 223 transitions. [2022-03-18 03:22:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 03:22:55,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 97 [2022-03-18 03:22:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:22:55,065 INFO L225 Difference]: With dead ends: 177 [2022-03-18 03:22:55,065 INFO L226 Difference]: Without dead ends: 138 [2022-03-18 03:22:55,066 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-03-18 03:22:55,066 INFO L912 BasicCegarLoop]: 62 mSDtfsCounter, 13 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:22:55,066 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 400 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:22:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-03-18 03:22:55,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-03-18 03:22:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 82 states have (on average 1.1219512195121952) internal successors, (92), 88 states have internal predecessors, (92), 39 states have call successors, (39), 17 states have call predecessors, (39), 16 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2022-03-18 03:22:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2022-03-18 03:22:55,085 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 97 [2022-03-18 03:22:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:22:55,085 INFO L478 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2022-03-18 03:22:55,085 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-03-18 03:22:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2022-03-18 03:22:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-03-18 03:22:55,087 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:22:55,087 INFO L500 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-18 03:22:55,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-18 03:22:55,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:22:55,304 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:22:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:22:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash -367001023, now seen corresponding path program 9 times [2022-03-18 03:22:55,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:22:55,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [504275987] [2022-03-18 03:22:55,305 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:22:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash -367001023, now seen corresponding path program 10 times [2022-03-18 03:22:55,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:22:55,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241600400] [2022-03-18 03:22:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:22:55,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:22:55,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:22:55,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054202148] [2022-03-18 03:22:55,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 03:22:55,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:22:55,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:22:55,321 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:22:55,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-18 03:22:55,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 03:22:55,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:22:55,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-18 03:22:55,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:22:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-03-18 03:22:56,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:23:18,010 WARN L232 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 03:23:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-03-18 03:23:53,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:23:53,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241600400] [2022-03-18 03:23:53,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:23:53,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054202148] [2022-03-18 03:23:53,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054202148] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:23:53,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:23:53,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 23 [2022-03-18 03:23:53,066 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:23:53,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [504275987] [2022-03-18 03:23:53,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [504275987] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:23:53,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:23:53,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 03:23:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003792064] [2022-03-18 03:23:53,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:23:53,067 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 03:23:53,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:23:53,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 03:23:53,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=402, Unknown=1, NotChecked=0, Total=506 [2022-03-18 03:23:53,067 INFO L87 Difference]: Start difference. First operand 138 states and 167 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 8 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-03-18 03:23:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:23:53,649 INFO L93 Difference]: Finished difference Result 184 states and 208 transitions. [2022-03-18 03:23:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 03:23:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 8 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 105 [2022-03-18 03:23:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:23:53,650 INFO L225 Difference]: With dead ends: 184 [2022-03-18 03:23:53,650 INFO L226 Difference]: Without dead ends: 151 [2022-03-18 03:23:53,651 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=111, Invalid=488, Unknown=1, NotChecked=0, Total=600 [2022-03-18 03:23:53,652 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 25 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 03:23:53,652 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 490 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 03:23:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-03-18 03:23:53,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-03-18 03:23:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 93 states have (on average 1.086021505376344) internal successors, (101), 98 states have internal predecessors, (101), 36 states have call successors, (36), 22 states have call predecessors, (36), 21 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2022-03-18 03:23:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 170 transitions. [2022-03-18 03:23:53,680 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 170 transitions. Word has length 105 [2022-03-18 03:23:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:23:53,680 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 170 transitions. [2022-03-18 03:23:53,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 8 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-03-18 03:23:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 170 transitions. [2022-03-18 03:23:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-03-18 03:23:53,682 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:23:53,682 INFO L500 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:23:53,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-18 03:23:53,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-18 03:23:53,883 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:23:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:23:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1683530195, now seen corresponding path program 11 times [2022-03-18 03:23:53,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:23:53,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [695305888] [2022-03-18 03:23:53,884 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:23:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1683530195, now seen corresponding path program 12 times [2022-03-18 03:23:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:23:53,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944741741] [2022-03-18 03:23:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:23:53,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:23:53,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:23:53,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866292108] [2022-03-18 03:23:53,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 03:23:53,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:23:53,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:23:53,894 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:23:53,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-18 03:23:53,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 03:23:53,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:23:53,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 03:23:53,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:23:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-03-18 03:23:54,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:23:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 71 proven. 4 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-18 03:23:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:23:55,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944741741] [2022-03-18 03:23:55,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:23:55,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866292108] [2022-03-18 03:23:55,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866292108] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:23:55,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:23:55,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2022-03-18 03:23:55,911 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:23:55,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [695305888] [2022-03-18 03:23:55,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [695305888] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:23:55,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:23:55,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 03:23:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943576982] [2022-03-18 03:23:55,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:23:55,912 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 03:23:55,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:23:55,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 03:23:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-03-18 03:23:55,912 INFO L87 Difference]: Start difference. First operand 151 states and 170 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-03-18 03:23:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:23:56,246 INFO L93 Difference]: Finished difference Result 172 states and 193 transitions. [2022-03-18 03:23:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 03:23:56,247 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 114 [2022-03-18 03:23:56,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:23:56,248 INFO L225 Difference]: With dead ends: 172 [2022-03-18 03:23:56,248 INFO L226 Difference]: Without dead ends: 160 [2022-03-18 03:23:56,248 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 200 SyntacticMatches, 14 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-03-18 03:23:56,248 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 20 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 03:23:56,248 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 324 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 233 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-03-18 03:23:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-03-18 03:23:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2022-03-18 03:23:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 98 states have (on average 1.0816326530612246) internal successors, (106), 103 states have internal predecessors, (106), 38 states have call successors, (38), 23 states have call predecessors, (38), 22 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-18 03:23:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 179 transitions. [2022-03-18 03:23:56,262 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 179 transitions. Word has length 114 [2022-03-18 03:23:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:23:56,263 INFO L478 AbstractCegarLoop]: Abstraction has 159 states and 179 transitions. [2022-03-18 03:23:56,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-03-18 03:23:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 179 transitions. [2022-03-18 03:23:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-18 03:23:56,264 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:23:56,265 INFO L500 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:23:56,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-18 03:23:56,485 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-18 03:23:56,485 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:23:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:23:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1619018179, now seen corresponding path program 3 times [2022-03-18 03:23:56,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:23:56,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1456022151] [2022-03-18 03:23:56,486 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:23:56,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1619018179, now seen corresponding path program 4 times [2022-03-18 03:23:56,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:23:56,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499876499] [2022-03-18 03:23:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:23:56,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:23:56,491 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:23:56,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146902810] [2022-03-18 03:23:56,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 03:23:56,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:23:56,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:23:56,493 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:23:56,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-18 03:23:56,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 03:23:56,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:23:56,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-18 03:23:56,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:23:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 40 proven. 24 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-03-18 03:23:57,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:24:06,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:24:06,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499876499] [2022-03-18 03:24:06,718 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:24:06,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146902810] [2022-03-18 03:24:06,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146902810] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 03:24:06,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 03:24:06,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-03-18 03:24:06,718 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:24:06,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1456022151] [2022-03-18 03:24:06,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1456022151] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:24:06,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:24:06,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 03:24:06,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309153448] [2022-03-18 03:24:06,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:24:06,719 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 03:24:06,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:24:06,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 03:24:06,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-03-18 03:24:06,719 INFO L87 Difference]: Start difference. First operand 159 states and 179 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-03-18 03:24:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:24:07,989 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2022-03-18 03:24:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 03:24:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 116 [2022-03-18 03:24:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:24:07,993 INFO L225 Difference]: With dead ends: 200 [2022-03-18 03:24:07,993 INFO L226 Difference]: Without dead ends: 128 [2022-03-18 03:24:07,993 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2022-03-18 03:24:07,993 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 23 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 03:24:07,994 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 439 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 03:24:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-03-18 03:24:08,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 121. [2022-03-18 03:24:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 77 states have internal predecessors, (80), 29 states have call successors, (29), 18 states have call predecessors, (29), 17 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2022-03-18 03:24:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2022-03-18 03:24:08,025 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 116 [2022-03-18 03:24:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:24:08,025 INFO L478 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2022-03-18 03:24:08,026 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-03-18 03:24:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2022-03-18 03:24:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-18 03:24:08,026 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:24:08,026 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:24:08,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-18 03:24:08,242 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-18 03:24:08,242 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:24:08,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:24:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash 515319041, now seen corresponding path program 13 times [2022-03-18 03:24:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:24:08,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [288160299] [2022-03-18 03:24:08,243 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:24:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash 515319041, now seen corresponding path program 14 times [2022-03-18 03:24:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:24:08,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357381642] [2022-03-18 03:24:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:24:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:24:08,249 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:24:08,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540073600] [2022-03-18 03:24:08,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:24:08,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:24:08,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:24:08,250 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:24:08,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-18 03:24:08,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:24:08,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:24:08,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 03:24:08,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:24:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 51 proven. 26 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-03-18 03:24:09,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:24:26,784 WARN L855 $PredicateComparison]: unable to prove that (<= 0 (div (let ((.cse0 (mod c_main_~A~0 4294967296))) (+ (div .cse0 8) (* (- 1) (div (+ (- 1) (* (- 1) .cse0)) (- 6))) 1)) 4294967296)) is different from true [2022-03-18 03:24:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 36 proven. 41 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-03-18 03:24:29,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:24:29,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357381642] [2022-03-18 03:24:29,115 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:24:29,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540073600] [2022-03-18 03:24:29,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540073600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:24:29,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:24:29,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-03-18 03:24:29,115 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:24:29,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [288160299] [2022-03-18 03:24:29,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [288160299] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:24:29,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:24:29,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 03:24:29,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515231331] [2022-03-18 03:24:29,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:24:29,116 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 03:24:29,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:24:29,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 03:24:29,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=356, Unknown=1, NotChecked=40, Total=506 [2022-03-18 03:24:29,117 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-03-18 03:24:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:24:30,346 INFO L93 Difference]: Finished difference Result 146 states and 169 transitions. [2022-03-18 03:24:30,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 03:24:30,348 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 122 [2022-03-18 03:24:30,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:24:30,352 INFO L225 Difference]: With dead ends: 146 [2022-03-18 03:24:30,353 INFO L226 Difference]: Without dead ends: 118 [2022-03-18 03:24:30,353 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=217, Invalid=716, Unknown=1, NotChecked=58, Total=992 [2022-03-18 03:24:30,353 INFO L912 BasicCegarLoop]: 67 mSDtfsCounter, 33 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 03:24:30,354 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 444 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 03:24:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-03-18 03:24:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2022-03-18 03:24:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 71 states have internal predecessors, (73), 26 states have call successors, (26), 17 states have call predecessors, (26), 16 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 03:24:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2022-03-18 03:24:30,378 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 122 [2022-03-18 03:24:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:24:30,378 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2022-03-18 03:24:30,378 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-03-18 03:24:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2022-03-18 03:24:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-18 03:24:30,379 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:24:30,379 INFO L500 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-03-18 03:24:30,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-18 03:24:30,595 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-18 03:24:30,595 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:24:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:24:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash -523768505, now seen corresponding path program 1 times [2022-03-18 03:24:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:24:30,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [636376926] [2022-03-18 03:24:30,596 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:24:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash -523768505, now seen corresponding path program 2 times [2022-03-18 03:24:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:24:30,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620998559] [2022-03-18 03:24:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:24:30,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:24:30,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:24:30,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503939670] [2022-03-18 03:24:30,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:24:30,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:24:30,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:24:30,606 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:24:30,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-18 03:24:30,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:24:30,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:24:30,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-18 03:24:30,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:24:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 34 proven. 47 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-03-18 03:24:31,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:24:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 34 proven. 41 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-03-18 03:24:47,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:24:47,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620998559] [2022-03-18 03:24:47,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:24:47,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503939670] [2022-03-18 03:24:47,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503939670] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:24:47,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:24:47,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 22 [2022-03-18 03:24:47,462 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:24:47,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [636376926] [2022-03-18 03:24:47,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [636376926] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:24:47,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:24:47,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 03:24:47,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970770441] [2022-03-18 03:24:47,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:24:47,463 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 03:24:47,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:24:47,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 03:24:47,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-03-18 03:24:47,464 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2022-03-18 03:24:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:24:48,228 INFO L93 Difference]: Finished difference Result 171 states and 201 transitions. [2022-03-18 03:24:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 03:24:48,229 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) Word has length 127 [2022-03-18 03:24:48,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:24:48,230 INFO L225 Difference]: With dead ends: 171 [2022-03-18 03:24:48,230 INFO L226 Difference]: Without dead ends: 151 [2022-03-18 03:24:48,231 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2022-03-18 03:24:48,231 INFO L912 BasicCegarLoop]: 67 mSDtfsCounter, 35 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 03:24:48,231 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 639 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 03:24:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-03-18 03:24:48,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-03-18 03:24:48,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 92 states have (on average 1.065217391304348) internal successors, (98), 96 states have internal predecessors, (98), 39 states have call successors, (39), 20 states have call predecessors, (39), 19 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2022-03-18 03:24:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2022-03-18 03:24:48,256 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 127 [2022-03-18 03:24:48,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:24:48,256 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2022-03-18 03:24:48,256 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2022-03-18 03:24:48,256 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2022-03-18 03:24:48,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-18 03:24:48,257 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:24:48,257 INFO L500 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-18 03:24:48,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-18 03:24:48,461 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:24:48,461 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:24:48,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:24:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1932789221, now seen corresponding path program 3 times [2022-03-18 03:24:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:24:48,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2133197552] [2022-03-18 03:24:48,462 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:24:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1932789221, now seen corresponding path program 4 times [2022-03-18 03:24:48,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:24:48,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155845929] [2022-03-18 03:24:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:24:48,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:24:48,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:24:48,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936180385] [2022-03-18 03:24:48,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 03:24:48,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:24:48,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:24:48,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:24:48,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-18 03:24:48,523 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 03:24:48,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:24:48,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-18 03:24:48,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:24:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2022-03-18 03:24:49,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:25:58,641 WARN L232 SmtUtils]: Spent 7.11s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 03:26:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2022-03-18 03:26:43,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:26:43,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155845929] [2022-03-18 03:26:43,783 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:26:43,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936180385] [2022-03-18 03:26:43,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936180385] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:26:43,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:26:43,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2022-03-18 03:26:43,783 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:26:43,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2133197552] [2022-03-18 03:26:43,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2133197552] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:26:43,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:26:43,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-18 03:26:43,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903145084] [2022-03-18 03:26:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:26:43,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-18 03:26:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:26:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-18 03:26:43,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2022-03-18 03:26:43,784 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 10 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-03-18 03:26:45,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:26:45,261 INFO L93 Difference]: Finished difference Result 180 states and 197 transitions. [2022-03-18 03:26:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 03:26:45,262 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 10 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) Word has length 135 [2022-03-18 03:26:45,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:26:45,263 INFO L225 Difference]: With dead ends: 180 [2022-03-18 03:26:45,263 INFO L226 Difference]: Without dead ends: 173 [2022-03-18 03:26:45,264 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2022-03-18 03:26:45,264 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 03:26:45,264 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 561 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 03:26:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-03-18 03:26:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-03-18 03:26:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 112 states have internal predecessors, (114), 38 states have call successors, (38), 26 states have call predecessors, (38), 25 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-18 03:26:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2022-03-18 03:26:45,290 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 135 [2022-03-18 03:26:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:26:45,291 INFO L478 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2022-03-18 03:26:45,291 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 10 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2022-03-18 03:26:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2022-03-18 03:26:45,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-03-18 03:26:45,295 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:26:45,295 INFO L500 BasicCegarLoop]: trace histogram [21, 20, 20, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 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] [2022-03-18 03:26:45,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-03-18 03:26:45,513 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-18 03:26:45,514 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:26:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:26:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1246986233, now seen corresponding path program 5 times [2022-03-18 03:26:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:26:45,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [267185854] [2022-03-18 03:26:45,515 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:26:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1246986233, now seen corresponding path program 6 times [2022-03-18 03:26:45,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:26:45,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962736010] [2022-03-18 03:26:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:26:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:26:45,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:26:45,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767042115] [2022-03-18 03:26:45,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 03:26:45,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:26:45,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:26:45,522 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:26:45,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-18 03:26:45,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-03-18 03:26:45,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:26:45,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-18 03:26:45,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:26:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 461 proven. 3 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-03-18 03:26:46,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:26:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 63 proven. 33 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2022-03-18 03:26:46,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:26:46,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962736010] [2022-03-18 03:26:46,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:26:46,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767042115] [2022-03-18 03:26:46,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767042115] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:26:46,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:26:46,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-03-18 03:26:46,941 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:26:46,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [267185854] [2022-03-18 03:26:46,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [267185854] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:26:46,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:26:46,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 03:26:46,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140753538] [2022-03-18 03:26:46,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:26:46,942 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 03:26:46,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:26:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 03:26:46,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-03-18 03:26:46,942 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2022-03-18 03:26:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:26:47,325 INFO L93 Difference]: Finished difference Result 179 states and 192 transitions. [2022-03-18 03:26:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 03:26:47,326 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) Word has length 144 [2022-03-18 03:26:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:26:47,326 INFO L225 Difference]: With dead ends: 179 [2022-03-18 03:26:47,326 INFO L226 Difference]: Without dead ends: 123 [2022-03-18 03:26:47,327 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-03-18 03:26:47,328 INFO L912 BasicCegarLoop]: 58 mSDtfsCounter, 31 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 03:26:47,328 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 265 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 03:26:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-03-18 03:26:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-03-18 03:26:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 78 states have (on average 1.0) internal successors, (78), 78 states have internal predecessors, (78), 26 states have call successors, (26), 20 states have call predecessors, (26), 18 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 03:26:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2022-03-18 03:26:47,375 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 144 [2022-03-18 03:26:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:26:47,392 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2022-03-18 03:26:47,392 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2022-03-18 03:26:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2022-03-18 03:26:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-18 03:26:47,396 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:26:47,396 INFO L500 BasicCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2022-03-18 03:26:47,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-18 03:26:47,597 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:26:47,597 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:26:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:26:47,597 INFO L85 PathProgramCache]: Analyzing trace with hash 667564579, now seen corresponding path program 1 times [2022-03-18 03:26:47,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:26:47,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1500249918] [2022-03-18 03:26:47,598 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:26:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash 667564579, now seen corresponding path program 2 times [2022-03-18 03:26:47,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:26:47,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626273284] [2022-03-18 03:26:47,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:26:47,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:26:47,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:26:47,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2000001965] [2022-03-18 03:26:47,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:26:47,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:26:47,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:26:47,608 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:26:47,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-18 03:26:47,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:26:47,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:26:47,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-18 03:26:47,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:26:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 40 proven. 63 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-03-18 03:26:50,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:26:51,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:26:51,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626273284] [2022-03-18 03:26:51,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:26:51,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000001965] [2022-03-18 03:26:51,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000001965] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 03:26:51,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 03:26:51,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-03-18 03:26:51,896 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:26:51,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1500249918] [2022-03-18 03:26:51,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1500249918] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:26:51,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:26:51,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 03:26:51,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677855584] [2022-03-18 03:26:51,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:26:51,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 03:26:51,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:26:51,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 03:26:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2022-03-18 03:26:51,897 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2022-03-18 03:26:53,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:26:53,557 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2022-03-18 03:26:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 03:26:53,558 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) Word has length 146 [2022-03-18 03:26:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:26:53,558 INFO L225 Difference]: With dead ends: 123 [2022-03-18 03:26:53,558 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 03:26:53,558 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2022-03-18 03:26:53,559 INFO L912 BasicCegarLoop]: 53 mSDtfsCounter, 23 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 03:26:53,559 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 380 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 03:26:53,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 03:26:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 03:26:53,559 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) [2022-03-18 03:26:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 03:26:53,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 146 [2022-03-18 03:26:53,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:26:53,560 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 03:26:53,560 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2022-03-18 03:26:53,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 03:26:53,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 03:26:53,562 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 03:26:53,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-18 03:26:53,775 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:26:53,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 03:27:13,028 WARN L232 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 245 DAG size of output: 118 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-18 03:27:22,082 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-03-18 03:27:22,082 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-03-18 03:27:22,082 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-03-18 03:27:22,082 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-03-18 03:27:22,082 INFO L878 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-03-18 03:27:22,082 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|)) [2022-03-18 03:27:22,082 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|)) [2022-03-18 03:27:22,083 INFO L878 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (<= 1 (mod main_~B~0 4294967296)) (<= (mod main_~A~0 4294967296) 5)) [2022-03-18 03:27:22,083 INFO L878 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (and (= main_~d~0 (mod main_~B~0 4294967296)) (= main_~p~0 1)) [2022-03-18 03:27:22,083 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 63) the Hoare annotation is: true [2022-03-18 03:27:22,083 INFO L878 garLoopResultBuilder]: At program point L54(lines 54 57) the Hoare annotation is: (let ((.cse2 (mod main_~A~0 4294967296)) (.cse12 (* (- 1) main_~r~0))) (let ((.cse9 (div (+ .cse2 .cse12) 2)) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse3 (* 2 .cse7)) (.cse5 (< (* main_~r~0 2) .cse2)) (.cse6 (= main_~p~0 1)) (.cse10 (<= (* .cse7 4) .cse2)) (.cse0 (= main_~d~0 .cse9)) (.cse11 (= main_~q~0 4)) (.cse1 (= (+ main_~r~0 (* main_~q~0 .cse7)) .cse2)) (.cse13 (* main_~d~0 2)) (.cse4 (<= .cse2 5)) (.cse8 (= main_~q~0 0))) (or (and (<= 0 main_~r~0) .cse0 .cse1 (= .cse2 (+ main_~r~0 .cse3)) .cse4 .cse5 .cse6) (and (= main_~d~0 .cse7) (< main_~r~0 .cse3) .cse1 .cse8 (<= .cse7 main_~r~0) .cse6) (and (= main_~d~0 (div .cse9 2)) .cse10 .cse1 .cse4 .cse11 .cse5 .cse6) (and (= main_~p~0 2) .cse10 .cse0 .cse1 .cse11 (<= (div (+ (* (- 2) main_~d~0) 5 .cse12) (- 4294967296)) (div (+ main_~r~0 .cse13) 4294967296)) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and (= main_~d~0 (* main_~p~0 .cse7)) .cse1 (< main_~r~0 .cse13) .cse4 .cse8 (= (mod main_~p~0 2) 0) (<= main_~d~0 main_~r~0)))))) [2022-03-18 03:27:22,083 INFO L878 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse19 (* (- 1) main_~d~0)) (.cse24 (+ main_~d~0 main_~r~0)) (.cse26 (* (- 1) main_~r~0)) (.cse25 (* .cse8 4)) (.cse5 (mod main_~A~0 4294967296)) (.cse9 (* 8 .cse8))) (let ((.cse12 (< .cse5 .cse9)) (.cse13 (= .cse25 main_~d~0)) (.cse16 (= main_~p~0 4)) (.cse3 (div (+ .cse5 .cse26) 2)) (.cse2 (<= .cse25 .cse5)) (.cse7 (= main_~q~0 4)) (.cse17 (< main_~r~0 main_~d~0)) (.cse1 (= main_~p~0 2)) (.cse14 (= .cse24 .cse5)) (.cse6 (* main_~r~0 2)) (.cse22 (* main_~d~0 2)) (.cse10 (div (+ .cse19 .cse5 .cse26) 2)) (.cse20 (= main_~d~0 .cse8)) (.cse0 (<= 0 main_~r~0)) (.cse23 (* 2 .cse8)) (.cse11 (= main_~p~0 1)) (.cse21 (= main_~d~0 (* main_~p~0 .cse8))) (.cse15 (= (+ main_~r~0 (* main_~q~0 .cse8)) .cse5)) (.cse4 (<= .cse5 5)) (.cse18 (= main_~q~0 0))) (or (and .cse0 .cse1 .cse2 (= main_~d~0 .cse3) .cse4 (= (mod (div (- (div (+ (* (- 2) .cse5) .cse6) (- 2))) (- 2)) 2) 0) .cse7 (< (div (+ (* (- 4) .cse8) 5) (- 4294967296)) (+ (div (+ (- 1) .cse9) 4294967296) 1)) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and (= (+ main_~p~0 4) main_~q~0) .cse0 .cse4 (= .cse5 (+ (* 5 .cse8) main_~r~0)) (= (div .cse10 2) main_~d~0) .cse11 .cse12) (and .cse13 .cse14 .cse2 .cse15 .cse4 .cse16 .cse12) (and .cse17 .cse13 .cse15 .cse4 .cse18 .cse16 (<= (div .cse19 (- 2)) main_~r~0)) (and .cse20 .cse15 .cse18 .cse11) (and (= main_~d~0 (div .cse3 2)) (not (<= .cse9 .cse5)) .cse2 .cse15 .cse4 .cse7 .cse11) (and .cse17 .cse21 .cse1 .cse15 .cse18 (<= .cse8 main_~r~0)) (and (< .cse5 .cse22) .cse0 .cse1 (= (mod (div (* (- 2) main_~d~0) (- 2)) 2) 0) .cse14 .cse15 .cse4 (<= .cse23 .cse24) (< .cse24 .cse25)) (and .cse20 (= .cse5 (+ main_~r~0 .cse8)) (= main_~q~0 1) (<= .cse8 .cse24) (< .cse5 .cse23) .cse11) (and (< (+ .cse6 .cse22) .cse5) (= main_~q~0 3) .cse0 (= main_~d~0 .cse10) (= (+ main_~r~0 (* 3 .cse8)) .cse5) .cse4 .cse11) (and .cse20 .cse0 (< main_~r~0 .cse23) .cse15 (= .cse5 (+ main_~r~0 .cse23)) .cse4 .cse11) (and .cse21 (<= 1 .cse8) .cse15 (= .cse9 main_~d~0) .cse4 .cse18 (<= .cse25 main_~r~0)))))) [2022-03-18 03:27:22,083 INFO L878 garLoopResultBuilder]: At program point L48(lines 46 58) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse19 (+ main_~d~0 main_~r~0)) (.cse25 (* .cse8 4)) (.cse9 (* 8 .cse8)) (.cse23 (* (- 1) main_~d~0)) (.cse5 (mod main_~A~0 4294967296)) (.cse26 (* (- 1) main_~r~0))) (let ((.cse6 (* main_~r~0 2)) (.cse14 (div (+ .cse23 .cse5 .cse26) 2)) (.cse16 (< .cse5 .cse9)) (.cse11 (< main_~r~0 main_~d~0)) (.cse20 (= .cse25 main_~d~0)) (.cse22 (= main_~p~0 4)) (.cse3 (div (+ .cse5 .cse26) 2)) (.cse2 (<= .cse25 .cse5)) (.cse7 (= main_~q~0 4)) (.cse17 (* main_~d~0 2)) (.cse1 (= main_~p~0 2)) (.cse21 (= .cse19 .cse5)) (.cse18 (= main_~d~0 .cse8)) (.cse0 (<= 0 main_~r~0)) (.cse10 (* 2 .cse8)) (.cse15 (= main_~p~0 1)) (.cse24 (= main_~d~0 (* main_~p~0 .cse8))) (.cse12 (= (+ main_~r~0 (* main_~q~0 .cse8)) .cse5)) (.cse4 (<= .cse5 5)) (.cse13 (= main_~q~0 0))) (or (and .cse0 .cse1 .cse2 (= main_~d~0 .cse3) .cse4 (= (mod (div (- (div (+ (* (- 2) .cse5) .cse6) (- 2))) (- 2)) 2) 0) .cse7 (< (div (+ (* (- 4) .cse8) 5) (- 4294967296)) (+ (div (+ (- 1) .cse9) 4294967296) 1)) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and (= main_~d~0 .cse10) .cse11 .cse1 .cse12 .cse13 (<= .cse8 main_~r~0)) (and (= (+ main_~p~0 4) main_~q~0) .cse0 .cse4 (= .cse5 (+ (* 5 .cse8) main_~r~0)) (= (div .cse14 2) main_~d~0) .cse15 .cse16) (and (< (+ .cse6 .cse17) .cse5) .cse0 (= main_~d~0 .cse14) .cse12 (= (+ main_~r~0 (* 3 .cse8)) .cse5) .cse4 .cse15) (and .cse18 (= .cse5 (+ (* (mod main_~d~0 4294967296) main_~q~0) main_~r~0)) (= main_~q~0 1) (<= .cse8 .cse19) (< .cse5 .cse10) .cse15) (and .cse20 .cse21 .cse2 .cse12 .cse4 .cse22 .cse16) (and .cse11 .cse20 .cse12 .cse4 .cse13 .cse22 (<= (div .cse23 (- 2)) main_~r~0)) (and (= main_~d~0 (div .cse3 2)) (not (<= .cse9 .cse5)) .cse2 .cse12 .cse4 .cse7 .cse15) (and .cse24 .cse12 .cse13 .cse15) (and (< .cse5 .cse17) .cse0 .cse1 (= (mod (div (* (- 2) main_~d~0) (- 2)) 2) 0) .cse21 .cse12 .cse4 (<= .cse10 .cse19) (< .cse19 .cse25)) (and .cse18 .cse0 (< main_~r~0 .cse10) .cse12 (= .cse5 (+ main_~r~0 .cse10)) .cse4 .cse15) (and .cse24 (<= 1 .cse8) .cse12 (= .cse9 main_~d~0) .cse4 .cse13 (<= .cse25 main_~r~0)))))) [2022-03-18 03:27:22,083 INFO L878 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse3 (mod main_~B~0 4294967296)) (.cse2 (mod main_~A~0 4294967296)) (.cse10 (* (- 1) main_~r~0))) (let ((.cse4 (div (+ (* (- 1) main_~d~0) .cse2 .cse10) 2)) (.cse6 (* 8 .cse3)) (.cse8 (= main_~d~0 .cse3)) (.cse0 (<= 0 main_~r~0)) (.cse7 (= (+ main_~r~0 (* main_~q~0 .cse3)) .cse2)) (.cse9 (* 2 .cse3)) (.cse1 (<= .cse2 5)) (.cse5 (= main_~p~0 1))) (or (and (= (+ main_~p~0 4) main_~q~0) .cse0 .cse1 (= .cse2 (+ (* 5 .cse3) main_~r~0)) (= (div .cse4 2) main_~d~0) .cse5 (< .cse2 .cse6)) (and (< (+ (* main_~r~0 2) (* main_~d~0 2)) .cse2) .cse0 (= main_~d~0 .cse4) .cse7 (= (+ main_~r~0 (* 3 .cse3)) .cse2) .cse1 .cse5) (and .cse8 (= .cse2 (+ (* (mod main_~d~0 4294967296) main_~q~0) main_~r~0)) (= main_~q~0 1) (<= .cse3 (+ main_~d~0 main_~r~0)) (< .cse2 .cse9) .cse5) (and (= main_~d~0 (div (div (+ .cse2 .cse10) 2) 2)) (not (<= .cse6 .cse2)) (<= (* .cse3 4) .cse2) .cse7 .cse1 (= main_~q~0 4) .cse5) (and (= main_~d~0 (* main_~p~0 .cse3)) .cse7 (= main_~q~0 0) .cse5) (and .cse8 .cse0 (< main_~r~0 .cse9) .cse7 (= .cse2 (+ main_~r~0 .cse9)) .cse1 .cse5)))) [2022-03-18 03:27:22,083 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 63) the Hoare annotation is: true [2022-03-18 03:27:22,083 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse6 (mod main_~A~0 4294967296)) (.cse5 (mod main_~B~0 4294967296))) (let ((.cse4 (= main_~d~0 (* main_~p~0 .cse5))) (.cse1 (= (+ main_~r~0 (* main_~q~0 .cse5)) .cse6)) (.cse2 (<= .cse6 5)) (.cse3 (= main_~q~0 0)) (.cse0 (* .cse5 4))) (or (and (= .cse0 main_~d~0) (< (div (div (div (+ main_~d~0 (- 4)) 2) 2) (- 4294967296)) 1) .cse1 .cse2 .cse3 (= main_~p~0 4) (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0)) (and .cse4 .cse1 (< (div (+ (- 1) main_~d~0) (- 4294967296)) 1) .cse2 .cse3 (= main_~p~0 1)) (and .cse4 (= main_~p~0 2) .cse1 .cse2 .cse3 (<= .cse5 main_~r~0) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and .cse4 (<= 1 .cse5) .cse1 (= (* 8 .cse5) main_~d~0) .cse2 .cse3 (<= .cse0 main_~r~0))))) [2022-03-18 03:27:22,084 INFO L878 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse6 (mod main_~A~0 4294967296)) (.cse5 (mod main_~B~0 4294967296))) (let ((.cse4 (= main_~d~0 (* main_~p~0 .cse5))) (.cse1 (= (+ main_~r~0 (* main_~q~0 .cse5)) .cse6)) (.cse2 (<= .cse6 5)) (.cse3 (= main_~q~0 0)) (.cse0 (* .cse5 4))) (or (and (= .cse0 main_~d~0) (< (div (div (div (+ main_~d~0 (- 4)) 2) 2) (- 4294967296)) 1) .cse1 .cse2 .cse3 (= main_~p~0 4) (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0)) (and .cse4 .cse1 (< (div (+ (- 1) main_~d~0) (- 4294967296)) 1) .cse2 .cse3 (= main_~p~0 1)) (and .cse4 (= main_~p~0 2) .cse1 .cse2 .cse3 (<= .cse5 main_~r~0) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and .cse4 (<= 1 .cse5) .cse1 (= (* 8 .cse5) main_~d~0) .cse2 .cse3 (<= .cse0 main_~r~0))))) [2022-03-18 03:27:22,084 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 63) the Hoare annotation is: true [2022-03-18 03:27:22,084 INFO L885 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2022-03-18 03:27:22,084 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 5) [2022-03-18 03:27:22,084 INFO L878 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 5) [2022-03-18 03:27:22,084 INFO L885 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-03-18 03:27:22,084 INFO L878 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 5) [2022-03-18 03:27:22,084 INFO L878 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse19 (* (- 1) main_~d~0)) (.cse24 (+ main_~d~0 main_~r~0)) (.cse26 (* (- 1) main_~r~0)) (.cse25 (* .cse8 4)) (.cse5 (mod main_~A~0 4294967296)) (.cse9 (* 8 .cse8))) (let ((.cse12 (< .cse5 .cse9)) (.cse13 (= .cse25 main_~d~0)) (.cse16 (= main_~p~0 4)) (.cse3 (div (+ .cse5 .cse26) 2)) (.cse2 (<= .cse25 .cse5)) (.cse7 (= main_~q~0 4)) (.cse17 (< main_~r~0 main_~d~0)) (.cse1 (= main_~p~0 2)) (.cse14 (= .cse24 .cse5)) (.cse6 (* main_~r~0 2)) (.cse22 (* main_~d~0 2)) (.cse10 (div (+ .cse19 .cse5 .cse26) 2)) (.cse20 (= main_~d~0 .cse8)) (.cse0 (<= 0 main_~r~0)) (.cse23 (* 2 .cse8)) (.cse11 (= main_~p~0 1)) (.cse21 (= main_~d~0 (* main_~p~0 .cse8))) (.cse15 (= (+ main_~r~0 (* main_~q~0 .cse8)) .cse5)) (.cse4 (<= .cse5 5)) (.cse18 (= main_~q~0 0))) (or (and .cse0 .cse1 .cse2 (= main_~d~0 .cse3) .cse4 (= (mod (div (- (div (+ (* (- 2) .cse5) .cse6) (- 2))) (- 2)) 2) 0) .cse7 (< (div (+ (* (- 4) .cse8) 5) (- 4294967296)) (+ (div (+ (- 1) .cse9) 4294967296) 1)) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and (= (+ main_~p~0 4) main_~q~0) .cse0 .cse4 (= .cse5 (+ (* 5 .cse8) main_~r~0)) (= (div .cse10 2) main_~d~0) .cse11 .cse12) (and .cse13 .cse14 .cse2 .cse15 .cse4 .cse16 .cse12) (and .cse17 .cse13 .cse15 .cse4 .cse18 .cse16 (<= (div .cse19 (- 2)) main_~r~0)) (and .cse20 .cse15 .cse18 .cse11) (and (= main_~d~0 (div .cse3 2)) (not (<= .cse9 .cse5)) .cse2 .cse15 .cse4 .cse7 .cse11) (and .cse17 .cse21 .cse1 .cse15 .cse18 (<= .cse8 main_~r~0)) (and (< .cse5 .cse22) .cse0 .cse1 (= (mod (div (* (- 2) main_~d~0) (- 2)) 2) 0) .cse14 .cse15 .cse4 (<= .cse23 .cse24) (< .cse24 .cse25)) (and .cse20 (= .cse5 (+ main_~r~0 .cse8)) (= main_~q~0 1) (<= .cse8 .cse24) (< .cse5 .cse23) .cse11) (and (< (+ .cse6 .cse22) .cse5) (= main_~q~0 3) .cse0 (= main_~d~0 .cse10) (= (+ main_~r~0 (* 3 .cse8)) .cse5) .cse4 .cse11) (and .cse20 .cse0 (< main_~r~0 .cse23) .cse15 (= .cse5 (+ main_~r~0 .cse23)) .cse4 .cse11) (and .cse21 (<= 1 .cse8) .cse15 (= .cse9 main_~d~0) .cse4 .cse18 (<= .cse25 main_~r~0)))))) [2022-03-18 03:27:22,084 INFO L878 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse9 (* 8 .cse8)) (.cse18 (* .cse8 4)) (.cse15 (+ main_~d~0 main_~r~0)) (.cse21 (* (- 1) main_~d~0)) (.cse5 (mod main_~A~0 4294967296)) (.cse25 (* (- 1) main_~r~0))) (let ((.cse6 (* main_~r~0 2)) (.cse10 (div (+ .cse21 .cse5 .cse25) 2)) (.cse3 (div (+ .cse5 .cse25) 2)) (.cse7 (= main_~q~0 4)) (.cse17 (< main_~r~0 main_~d~0)) (.cse1 (= main_~p~0 2)) (.cse23 (= .cse15 .cse5)) (.cse2 (<= .cse18 .cse5)) (.cse24 (exists ((main_~A~0 Int)) (= main_~d~0 (* main_~p~0 (mod main_~B~0 4294967296))))) (.cse20 (= main_~p~0 4)) (.cse12 (< .cse5 .cse9)) (.cse14 (= main_~d~0 .cse8)) (.cse0 (<= 0 main_~r~0)) (.cse16 (* 2 .cse8)) (.cse11 (= main_~p~0 1)) (.cse22 (= main_~d~0 (* main_~p~0 .cse8))) (.cse13 (= (+ main_~r~0 (* main_~q~0 .cse8)) .cse5)) (.cse4 (<= .cse5 5)) (.cse19 (= main_~q~0 0))) (or (and .cse0 .cse1 .cse2 (= main_~d~0 .cse3) .cse4 (= (mod (div (- (div (+ (* (- 2) .cse5) .cse6) (- 2))) (- 2)) 2) 0) .cse7 (< (div (+ (* (- 4) .cse8) 5) (- 4294967296)) (+ (div (+ (- 1) .cse9) 4294967296) 1)) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and (= (+ main_~p~0 4) main_~q~0) .cse0 .cse4 (= .cse5 (+ (* 5 .cse8) main_~r~0)) (= (div .cse10 2) main_~d~0) .cse11 .cse12) (and (< (+ .cse6 (* main_~d~0 2)) .cse5) .cse0 (= main_~d~0 .cse10) .cse13 (= (+ main_~r~0 (* 3 .cse8)) .cse5) .cse4 .cse11) (and .cse14 (= .cse5 (+ (* (mod main_~d~0 4294967296) main_~q~0) main_~r~0)) (= main_~q~0 1) (<= .cse8 .cse15) (< .cse5 .cse16) .cse11) (and .cse17 (= .cse18 main_~d~0) .cse13 .cse4 .cse19 .cse20 (<= (div .cse21 (- 2)) main_~r~0)) (and .cse14 .cse13 .cse19 .cse11) (and (= main_~d~0 (div .cse3 2)) (not (<= .cse9 .cse5)) .cse2 .cse13 .cse4 .cse7 .cse11) (and .cse17 .cse22 .cse1 .cse13 .cse19 (<= .cse8 main_~r~0)) (and .cse1 .cse23 .cse13 .cse4 .cse24 (<= .cse16 .cse15) (< .cse15 .cse18)) (and .cse23 .cse2 .cse13 .cse4 .cse24 .cse20 .cse12) (and .cse14 .cse0 (< main_~r~0 .cse16) .cse13 (= .cse5 (+ main_~r~0 .cse16)) .cse4 .cse11) (and .cse22 (<= 1 .cse8) .cse13 (= .cse9 main_~d~0) .cse4 .cse19 (<= .cse18 main_~r~0)))))) [2022-03-18 03:27:22,084 INFO L878 garLoopResultBuilder]: At program point L39(lines 36 44) the Hoare annotation is: (let ((.cse6 (mod main_~A~0 4294967296)) (.cse5 (mod main_~B~0 4294967296))) (let ((.cse4 (= main_~d~0 (* main_~p~0 .cse5))) (.cse1 (= (+ main_~r~0 (* main_~q~0 .cse5)) .cse6)) (.cse2 (<= .cse6 5)) (.cse3 (= main_~q~0 0)) (.cse0 (* .cse5 4))) (or (and (= .cse0 main_~d~0) (< (div (div (div (+ main_~d~0 (- 4)) 2) 2) (- 4294967296)) 1) .cse1 .cse2 .cse3 (= main_~p~0 4) (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0)) (and .cse4 .cse1 (< (div (+ (- 1) main_~d~0) (- 4294967296)) 1) .cse2 .cse3 (= main_~p~0 1)) (and .cse4 (= main_~p~0 2) .cse1 .cse2 .cse3 (<= .cse5 main_~r~0) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and .cse4 (<= 1 .cse5) .cse1 (= (* 8 .cse5) main_~d~0) .cse2 .cse3 (<= .cse0 main_~r~0))))) [2022-03-18 03:27:22,084 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse6 (mod main_~A~0 4294967296)) (.cse5 (mod main_~B~0 4294967296))) (let ((.cse4 (= main_~d~0 (* main_~p~0 .cse5))) (.cse1 (= (+ main_~r~0 (* main_~q~0 .cse5)) .cse6)) (.cse2 (<= .cse6 5)) (.cse3 (= main_~q~0 0)) (.cse0 (* .cse5 4))) (or (and (= .cse0 main_~d~0) (< (div (div (div (+ main_~d~0 (- 4)) 2) 2) (- 4294967296)) 1) .cse1 .cse2 .cse3 (= main_~p~0 4) (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0)) (and .cse4 .cse1 (< (div (+ (- 1) main_~d~0) (- 4294967296)) 1) .cse2 .cse3 (= main_~p~0 1)) (and .cse4 (= main_~p~0 2) .cse1 .cse2 .cse3 (<= .cse5 main_~r~0) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and .cse4 (<= 1 .cse5) .cse1 (= (* 8 .cse5) main_~d~0) .cse2 .cse3 (<= .cse0 main_~r~0))))) [2022-03-18 03:27:22,084 INFO L878 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse6 (mod main_~A~0 4294967296)) (.cse5 (mod main_~B~0 4294967296))) (let ((.cse4 (= main_~d~0 (* main_~p~0 .cse5))) (.cse1 (= (+ main_~r~0 (* main_~q~0 .cse5)) .cse6)) (.cse2 (<= .cse6 5)) (.cse3 (= main_~q~0 0)) (.cse0 (* .cse5 4))) (or (and (= .cse0 main_~d~0) (< (div (div (div (+ main_~d~0 (- 4)) 2) 2) (- 4294967296)) 1) .cse1 .cse2 .cse3 (= main_~p~0 4) (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0)) (and .cse4 .cse1 (< (div (+ (- 1) main_~d~0) (- 4294967296)) 1) .cse2 .cse3 (= main_~p~0 1)) (and .cse4 (= main_~p~0 2) .cse1 .cse2 .cse3 (<= .cse5 main_~r~0) (< (div (div (+ (- 2) main_~d~0) 2) (- 4294967296)) 1)) (and .cse4 (<= 1 .cse5) .cse1 (= (* 8 .cse5) main_~d~0) .cse2 .cse3 (<= .cse0 main_~r~0))))) [2022-03-18 03:27:22,084 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-18 03:27:22,085 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|)) [2022-03-18 03:27:22,085 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-18 03:27:22,085 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-18 03:27:22,085 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 03:27:22,085 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 03:27:22,085 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-18 03:27:22,085 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-18 03:27:22,085 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-03-18 03:27:22,085 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-03-18 03:27:22,085 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-03-18 03:27:22,085 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-03-18 03:27:22,085 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-18 03:27:22,087 INFO L718 BasicCegarLoop]: Path program histogram: [14, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2] [2022-03-18 03:27:22,088 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 03:27:22,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 03:27:22 BoogieIcfgContainer [2022-03-18 03:27:22,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 03:27:22,108 INFO L158 Benchmark]: Toolchain (without parser) took 392091.49ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 136.3MB in the beginning and 113.6MB in the end (delta: 22.7MB). Peak memory consumption was 114.5MB. Max. memory is 8.0GB. [2022-03-18 03:27:22,108 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 152.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 03:27:22,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.64ms. Allocated memory is still 190.8MB. Free memory was 136.1MB in the beginning and 161.0MB in the end (delta: -24.9MB). Peak memory consumption was 5.0MB. Max. memory is 8.0GB. [2022-03-18 03:27:22,109 INFO L158 Benchmark]: Boogie Preprocessor took 19.37ms. Allocated memory is still 190.8MB. Free memory was 161.0MB in the beginning and 159.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 03:27:22,109 INFO L158 Benchmark]: RCFGBuilder took 213.13ms. Allocated memory is still 190.8MB. Free memory was 159.4MB in the beginning and 148.4MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 03:27:22,109 INFO L158 Benchmark]: TraceAbstraction took 391595.32ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 147.9MB in the beginning and 113.6MB in the end (delta: 34.3MB). Peak memory consumption was 127.4MB. Max. memory is 8.0GB. [2022-03-18 03:27:22,110 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 190.8MB. Free memory is still 152.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.64ms. Allocated memory is still 190.8MB. Free memory was 136.1MB in the beginning and 161.0MB in the end (delta: -24.9MB). Peak memory consumption was 5.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.37ms. Allocated memory is still 190.8MB. Free memory was 161.0MB in the beginning and 159.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 213.13ms. Allocated memory is still 190.8MB. Free memory was 159.4MB in the beginning and 148.4MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 391595.32ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 147.9MB in the beginning and 113.6MB in the end (delta: 34.3MB). Peak memory consumption was 127.4MB. 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: 391.5s, OverallIterations: 20, TraceHistogramMax: 21, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 28.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 521 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 424 mSDsluCounter, 5879 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 40 IncrementalHoareTripleChecker+Unchecked, 4930 mSDsCounter, 527 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4341 IncrementalHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 527 mSolverCounterUnsat, 949 mSDtfsCounter, 4341 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3105 GetRequests, 2754 SyntacticMatches, 31 SemanticMatches, 320 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1412 ImplicationChecksByTransitivity, 59.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=18, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 37 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 798 PreInvPairs, 1086 NumberOfFragments, 3857 HoareAnnotationTreeSize, 798 FomulaSimplifications, 1592 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 38 FomulaSimplificationsInter, 9869 FormulaSimplificationTreeSizeReductionInter, 27.8s 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: ((((((((B % 4294967296 * 4 == d && (d + -4) / 2 / 2 / -4294967296 < 1) && r + q * (B % 4294967296) == A % 4294967296) && A % 4294967296 <= 5) && q == 0) && p == 4) && -1 * d / -2 <= r) || (((((d == p * (B % 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && (-1 + d) / -4294967296 < 1) && A % 4294967296 <= 5) && q == 0) && p == 1)) || ((((((d == p * (B % 4294967296) && p == 2) && r + q * (B % 4294967296) == A % 4294967296) && A % 4294967296 <= 5) && q == 0) && B % 4294967296 <= r) && (-2 + d) / 2 / -4294967296 < 1)) || ((((((d == p * (B % 4294967296) && 1 <= B % 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && 8 * (B % 4294967296) == d) && A % 4294967296 <= 5) && q == 0) && B % 4294967296 * 4 <= r) - 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: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-03-18 03:27:22,329 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...