/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/egcd2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 02:39:44,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 02:39:44,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 02:39:44,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 02:39:44,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 02:39:44,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 02:39:44,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 02:39:44,749 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 02:39:44,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 02:39:44,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 02:39:44,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 02:39:44,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 02:39:44,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 02:39:44,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 02:39:44,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 02:39:44,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 02:39:44,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 02:39:44,767 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 02:39:44,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 02:39:44,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 02:39:44,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 02:39:44,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 02:39:44,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 02:39:44,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 02:39:44,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 02:39:44,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 02:39:44,768 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 02:39:44,768 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 02:39:44,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 02:39:44,769 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 02:39:44,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 02:39:45,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 02:39:45,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 02:39:45,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 02:39:45,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 02:39:45,044 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 02:39:45,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-03-18 02:39:45,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e89283c/efb91a56a8994d5190aa1e128b52b056/FLAG3608fbf86 [2022-03-18 02:39:45,509 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 02:39:45,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-03-18 02:39:45,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e89283c/efb91a56a8994d5190aa1e128b52b056/FLAG3608fbf86 [2022-03-18 02:39:45,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e89283c/efb91a56a8994d5190aa1e128b52b056 [2022-03-18 02:39:45,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 02:39:45,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 02:39:45,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 02:39:45,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 02:39:45,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 02:39:45,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ea64be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45, skipping insertion in model container [2022-03-18 02:39:45,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 02:39:45,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 02:39:45,758 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/egcd2-ll_valuebound2.c[490,503] [2022-03-18 02:39:45,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 02:39:45,799 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 02:39:45,810 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/egcd2-ll_valuebound2.c[490,503] [2022-03-18 02:39:45,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 02:39:45,850 INFO L208 MainTranslator]: Completed translation [2022-03-18 02:39:45,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45 WrapperNode [2022-03-18 02:39:45,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 02:39:45,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 02:39:45,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 02:39:45,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 02:39:45,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 02:39:45,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 02:39:45,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 02:39:45,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 02:39:45,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45" (1/1) ... [2022-03-18 02:39:45,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 02:39:45,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:45,929 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 02:39:45,956 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 02:39:45,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 02:39:45,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 02:39:45,972 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 02:39:45,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 02:39:45,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 02:39:45,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 02:39:45,973 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 02:39:45,973 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 02:39:45,974 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 02:39:45,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 02:39:45,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 02:39:45,974 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 02:39:45,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 02:39:45,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 02:39:45,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 02:39:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 02:39:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 02:39:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 02:39:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 02:39:45,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 02:39:46,030 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 02:39:46,032 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 02:39:46,146 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 02:39:46,151 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 02:39:46,152 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 02:39:46,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 02:39:46 BoogieIcfgContainer [2022-03-18 02:39:46,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 02:39:46,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 02:39:46,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 02:39:46,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 02:39:46,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 02:39:45" (1/3) ... [2022-03-18 02:39:46,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11143d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 02:39:46, skipping insertion in model container [2022-03-18 02:39:46,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:45" (2/3) ... [2022-03-18 02:39:46,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11143d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 02:39:46, skipping insertion in model container [2022-03-18 02:39:46,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 02:39:46" (3/3) ... [2022-03-18 02:39:46,160 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2022-03-18 02:39:46,165 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 02:39:46,165 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 02:39:46,200 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 02:39:46,210 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 02:39:46,211 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 02:39:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 02:39:46,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-18 02:39:46,235 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:46,236 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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 02:39:46,236 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:46,240 INFO L85 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 1 times [2022-03-18 02:39:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:46,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1439919829] [2022-03-18 02:39:46,285 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:46,286 INFO L85 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 2 times [2022-03-18 02:39:46,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:46,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726603122] [2022-03-18 02:39:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:46,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 02:39:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:46,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 02:39:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 02:39:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 02:39:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 02:39:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 02:39:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:46,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 02:39:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 02:39:46,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:46,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726603122] [2022-03-18 02:39:46,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726603122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:46,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:46,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 02:39:46,590 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:46,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1439919829] [2022-03-18 02:39:46,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1439919829] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:46,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:46,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 02:39:46,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906152887] [2022-03-18 02:39:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:46,595 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 02:39:46,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:46,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 02:39:46,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 02:39:46,633 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:39:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:46,764 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2022-03-18 02:39:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 02:39:46,768 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-03-18 02:39:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:46,776 INFO L225 Difference]: With dead ends: 73 [2022-03-18 02:39:46,776 INFO L226 Difference]: Without dead ends: 35 [2022-03-18 02:39:46,780 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 02:39:46,785 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:46,786 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-18 02:39:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-18 02:39:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 02:39:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-03-18 02:39:46,835 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-03-18 02:39:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:46,836 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-03-18 02:39:46,836 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:39:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-03-18 02:39:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-18 02:39:46,839 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:46,840 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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 02:39:46,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 02:39:46,840 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:46,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:46,842 INFO L85 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 1 times [2022-03-18 02:39:46,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:46,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1825989839] [2022-03-18 02:39:46,847 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 2 times [2022-03-18 02:39:46,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:46,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694902942] [2022-03-18 02:39:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:46,886 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:46,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859436645] [2022-03-18 02:39:46,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:46,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:46,889 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 02:39:46,890 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 02:39:46,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:46,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:46,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 02:39:46,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-18 02:39:47,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-18 02:39:47,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:47,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694902942] [2022-03-18 02:39:47,331 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:47,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859436645] [2022-03-18 02:39:47,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859436645] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:47,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:47,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-03-18 02:39:47,342 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:47,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1825989839] [2022-03-18 02:39:47,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1825989839] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:47,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:47,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 02:39:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741420118] [2022-03-18 02:39:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:47,344 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 02:39:47,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:47,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 02:39:47,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:39:47,345 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:39:47,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:47,464 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-03-18 02:39:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 02:39:47,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-03-18 02:39:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:47,468 INFO L225 Difference]: With dead ends: 52 [2022-03-18 02:39:47,468 INFO L226 Difference]: Without dead ends: 44 [2022-03-18 02:39:47,469 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:39:47,470 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:47,474 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 154 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:47,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-18 02:39:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-18 02:39:47,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 02:39:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-03-18 02:39:47,494 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 44 [2022-03-18 02:39:47,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:47,494 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-03-18 02:39:47,494 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:39:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-03-18 02:39:47,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 02:39:47,498 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:47,498 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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 02:39:47,519 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 02:39:47,703 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:47,704 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:47,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:47,704 INFO L85 PathProgramCache]: Analyzing trace with hash 561616070, now seen corresponding path program 1 times [2022-03-18 02:39:47,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:47,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [620083770] [2022-03-18 02:39:47,705 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:47,705 INFO L85 PathProgramCache]: Analyzing trace with hash 561616070, now seen corresponding path program 2 times [2022-03-18 02:39:47,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:47,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286312193] [2022-03-18 02:39:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:47,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:47,726 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:47,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485541435] [2022-03-18 02:39:47,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:47,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:47,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:47,728 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 02:39:47,731 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 02:39:47,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 02:39:47,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:47,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 02:39:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 02:39:47,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:39:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286312193] [2022-03-18 02:39:47,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:47,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485541435] [2022-03-18 02:39:47,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485541435] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:47,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:47,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:47,875 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:47,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [620083770] [2022-03-18 02:39:47,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [620083770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:47,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:47,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150952846] [2022-03-18 02:39:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:47,877 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:39:47,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:39:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:39:47,878 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 02:39:47,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:47,925 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-03-18 02:39:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:39:47,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-03-18 02:39:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:47,927 INFO L225 Difference]: With dead ends: 50 [2022-03-18 02:39:47,927 INFO L226 Difference]: Without dead ends: 48 [2022-03-18 02:39:47,928 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 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 02:39:47,937 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:47,938 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 163 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:39:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-18 02:39:47,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2022-03-18 02:39:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 02:39:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2022-03-18 02:39:47,951 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 45 [2022-03-18 02:39:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:47,952 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2022-03-18 02:39:47,952 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 02:39:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2022-03-18 02:39:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 02:39:47,953 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:47,953 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 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 02:39:47,980 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 02:39:48,153 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 02:39:48,154 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:48,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:48,154 INFO L85 PathProgramCache]: Analyzing trace with hash -680064098, now seen corresponding path program 1 times [2022-03-18 02:39:48,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:48,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [633710806] [2022-03-18 02:39:48,155 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:48,155 INFO L85 PathProgramCache]: Analyzing trace with hash -680064098, now seen corresponding path program 2 times [2022-03-18 02:39:48,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:48,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465311259] [2022-03-18 02:39:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:48,170 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:48,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369229887] [2022-03-18 02:39:48,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:48,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:48,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:48,172 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 02:39:48,173 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 02:39:48,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:48,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:48,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 02:39:48,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 02:39:48,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:39:48,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:48,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465311259] [2022-03-18 02:39:48,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369229887] [2022-03-18 02:39:48,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369229887] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:48,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:48,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:48,380 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [633710806] [2022-03-18 02:39:48,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [633710806] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:48,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:48,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088371742] [2022-03-18 02:39:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:48,381 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:39:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:39:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:39:48,382 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 02:39:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:48,417 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2022-03-18 02:39:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:39:48,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-03-18 02:39:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:48,422 INFO L225 Difference]: With dead ends: 58 [2022-03-18 02:39:48,423 INFO L226 Difference]: Without dead ends: 56 [2022-03-18 02:39:48,423 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 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 02:39:48,425 INFO L912 BasicCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:48,425 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 173 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:39:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-18 02:39:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-03-18 02:39:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 32 states have internal predecessors, (33), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 02:39:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2022-03-18 02:39:48,440 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 50 [2022-03-18 02:39:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:48,440 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2022-03-18 02:39:48,440 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 02:39:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2022-03-18 02:39:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 02:39:48,445 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:48,445 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:48,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-18 02:39:48,652 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:48,653 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:48,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash 606548870, now seen corresponding path program 1 times [2022-03-18 02:39:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:48,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [368082309] [2022-03-18 02:39:48,654 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash 606548870, now seen corresponding path program 2 times [2022-03-18 02:39:48,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:48,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741536560] [2022-03-18 02:39:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:48,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:48,664 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:48,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631779706] [2022-03-18 02:39:48,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:48,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:48,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:48,666 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 02:39:48,678 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 02:39:48,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:48,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:48,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 02:39:48,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-03-18 02:39:49,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741536560] [2022-03-18 02:39:49,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631779706] [2022-03-18 02:39:49,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631779706] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:39:49,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:39:49,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-03-18 02:39:49,112 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:49,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [368082309] [2022-03-18 02:39:49,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [368082309] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:49,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:49,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 02:39:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53238482] [2022-03-18 02:39:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:49,113 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 02:39:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 02:39:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-18 02:39:49,114 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-18 02:39:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:49,243 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2022-03-18 02:39:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 02:39:49,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2022-03-18 02:39:49,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:49,244 INFO L225 Difference]: With dead ends: 62 [2022-03-18 02:39:49,244 INFO L226 Difference]: Without dead ends: 60 [2022-03-18 02:39:49,245 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-18 02:39:49,245 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 22 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:49,246 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 215 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-03-18 02:39:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-03-18 02:39:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 1.125) internal successors, (36), 35 states have internal predecessors, (36), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 02:39:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2022-03-18 02:39:49,258 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 55 [2022-03-18 02:39:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:49,258 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2022-03-18 02:39:49,258 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-18 02:39:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2022-03-18 02:39:49,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 02:39:49,259 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:49,259 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1] [2022-03-18 02:39:49,283 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 02:39:49,475 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:49,476 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1584976990, now seen corresponding path program 1 times [2022-03-18 02:39:49,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:49,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1686190499] [2022-03-18 02:39:49,477 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:49,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1584976990, now seen corresponding path program 2 times [2022-03-18 02:39:49,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:49,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612985085] [2022-03-18 02:39:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:49,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:49,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:49,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078621720] [2022-03-18 02:39:49,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:49,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:49,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:49,490 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 02:39:49,507 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 02:39:49,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:49,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:49,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 02:39:49,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-03-18 02:39:49,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:49,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:49,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612985085] [2022-03-18 02:39:49,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:49,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078621720] [2022-03-18 02:39:49,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078621720] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:39:49,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:39:49,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-03-18 02:39:49,851 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:49,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1686190499] [2022-03-18 02:39:49,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1686190499] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:49,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:49,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 02:39:49,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911012839] [2022-03-18 02:39:49,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:49,854 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 02:39:49,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:49,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 02:39:49,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:39:49,854 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-18 02:39:49,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:49,965 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2022-03-18 02:39:49,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 02:39:49,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2022-03-18 02:39:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:49,971 INFO L225 Difference]: With dead ends: 66 [2022-03-18 02:39:49,972 INFO L226 Difference]: Without dead ends: 64 [2022-03-18 02:39:49,972 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-18 02:39:49,973 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:49,973 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 181 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:49,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-18 02:39:49,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-03-18 02:39:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 38 states have internal predecessors, (39), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 02:39:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2022-03-18 02:39:49,998 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 60 [2022-03-18 02:39:49,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:49,998 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2022-03-18 02:39:49,998 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-18 02:39:49,998 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2022-03-18 02:39:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 02:39:50,000 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:50,001 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:50,027 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 02:39:50,215 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:50,216 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash -669670075, now seen corresponding path program 1 times [2022-03-18 02:39:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:50,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1892439899] [2022-03-18 02:39:50,217 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:50,217 INFO L85 PathProgramCache]: Analyzing trace with hash -669670075, now seen corresponding path program 2 times [2022-03-18 02:39:50,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:50,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154211189] [2022-03-18 02:39:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:50,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:50,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:50,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45053618] [2022-03-18 02:39:50,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:50,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:50,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:50,230 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 02:39:50,258 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 02:39:50,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:50,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:50,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 02:39:50,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 02:39:50,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-03-18 02:39:50,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:50,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154211189] [2022-03-18 02:39:50,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:50,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45053618] [2022-03-18 02:39:50,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45053618] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 02:39:50,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:39:50,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-03-18 02:39:50,581 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:50,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1892439899] [2022-03-18 02:39:50,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1892439899] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:50,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:50,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:50,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754542935] [2022-03-18 02:39:50,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:50,582 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:39:50,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:50,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:39:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:39:50,583 INFO L87 Difference]: Start difference. First operand 63 states and 77 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 02:39:50,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:50,623 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2022-03-18 02:39:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:39:50,624 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2022-03-18 02:39:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:50,624 INFO L225 Difference]: With dead ends: 69 [2022-03-18 02:39:50,624 INFO L226 Difference]: Without dead ends: 67 [2022-03-18 02:39:50,625 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 02:39:50,626 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:50,626 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:39:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-18 02:39:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2022-03-18 02:39:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 02:39:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-03-18 02:39:50,636 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 67 [2022-03-18 02:39:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:50,637 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-03-18 02:39:50,637 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 02:39:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-03-18 02:39:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 02:39:50,638 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:50,638 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 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, 1, 1, 1, 1, 1] [2022-03-18 02:39:50,664 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 02:39:50,860 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:50,861 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1682830289, now seen corresponding path program 1 times [2022-03-18 02:39:50,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:50,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [132093099] [2022-03-18 02:39:50,862 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1682830289, now seen corresponding path program 2 times [2022-03-18 02:39:50,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:50,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695254137] [2022-03-18 02:39:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:50,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:50,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:50,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013373533] [2022-03-18 02:39:50,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:50,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:50,877 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 02:39:50,878 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 02:39:50,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:50,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:50,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 02:39:50,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-18 02:39:51,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-18 02:39:51,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:51,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695254137] [2022-03-18 02:39:51,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:51,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013373533] [2022-03-18 02:39:51,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013373533] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:51,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:51,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-18 02:39:51,202 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:51,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [132093099] [2022-03-18 02:39:51,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [132093099] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:51,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:51,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 02:39:51,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43154993] [2022-03-18 02:39:51,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:51,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 02:39:51,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:51,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 02:39:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:39:51,204 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-18 02:39:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:51,361 INFO L93 Difference]: Finished difference Result 106 states and 146 transitions. [2022-03-18 02:39:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 02:39:51,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2022-03-18 02:39:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:51,363 INFO L225 Difference]: With dead ends: 106 [2022-03-18 02:39:51,363 INFO L226 Difference]: Without dead ends: 98 [2022-03-18 02:39:51,363 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-18 02:39:51,364 INFO L912 BasicCegarLoop]: 60 mSDtfsCounter, 30 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:51,364 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 333 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-18 02:39:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2022-03-18 02:39:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 02:39:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-03-18 02:39:51,380 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 69 [2022-03-18 02:39:51,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:51,381 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-03-18 02:39:51,381 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-18 02:39:51,381 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-03-18 02:39:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 02:39:51,382 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:51,382 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:51,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:51,595 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:51,596 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 376741854, now seen corresponding path program 1 times [2022-03-18 02:39:51,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:51,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1813085718] [2022-03-18 02:39:51,597 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:51,597 INFO L85 PathProgramCache]: Analyzing trace with hash 376741854, now seen corresponding path program 2 times [2022-03-18 02:39:51,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:51,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253139689] [2022-03-18 02:39:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:51,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:51,607 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:51,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827718110] [2022-03-18 02:39:51,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:51,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:51,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:51,609 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 02:39:51,610 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 02:39:51,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:51,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:51,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-18 02:39:51,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-18 02:39:51,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-18 02:39:52,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:52,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253139689] [2022-03-18 02:39:52,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:52,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827718110] [2022-03-18 02:39:52,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827718110] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:52,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:52,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2022-03-18 02:39:52,012 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:52,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1813085718] [2022-03-18 02:39:52,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1813085718] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:52,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:52,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 02:39:52,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332490260] [2022-03-18 02:39:52,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:52,013 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 02:39:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 02:39:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 02:39:52,013 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 02:39:52,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:52,166 INFO L93 Difference]: Finished difference Result 124 states and 173 transitions. [2022-03-18 02:39:52,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 02:39:52,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2022-03-18 02:39:52,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:52,168 INFO L225 Difference]: With dead ends: 124 [2022-03-18 02:39:52,168 INFO L226 Difference]: Without dead ends: 121 [2022-03-18 02:39:52,168 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-18 02:39:52,169 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:52,169 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 293 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-03-18 02:39:52,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2022-03-18 02:39:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 64 states have internal predecessors, (75), 47 states have call successors, (47), 9 states have call predecessors, (47), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:39:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2022-03-18 02:39:52,190 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 75 [2022-03-18 02:39:52,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:52,191 INFO L478 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2022-03-18 02:39:52,191 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 02:39:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2022-03-18 02:39:52,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-18 02:39:52,192 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:52,192 INFO L500 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1] [2022-03-18 02:39:52,218 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 02:39:52,413 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,SelfDestructingSolverStorable8 [2022-03-18 02:39:52,413 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:52,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1245952186, now seen corresponding path program 3 times [2022-03-18 02:39:52,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:52,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1264933791] [2022-03-18 02:39:52,415 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:52,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1245952186, now seen corresponding path program 4 times [2022-03-18 02:39:52,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:52,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726303625] [2022-03-18 02:39:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:52,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:52,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:52,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589095927] [2022-03-18 02:39:52,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:39:52,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:52,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:52,434 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 02:39:52,435 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 02:39:52,491 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:39:52,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:52,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-18 02:39:52,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-03-18 02:39:53,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-03-18 02:39:53,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:53,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726303625] [2022-03-18 02:39:53,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:53,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589095927] [2022-03-18 02:39:53,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589095927] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:53,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:53,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22 [2022-03-18 02:39:53,551 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:53,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1264933791] [2022-03-18 02:39:53,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1264933791] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:53,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:53,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 02:39:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581279887] [2022-03-18 02:39:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:53,552 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 02:39:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 02:39:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-03-18 02:39:53,553 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-03-18 02:39:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:53,953 INFO L93 Difference]: Finished difference Result 130 states and 176 transitions. [2022-03-18 02:39:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:39:53,953 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 80 [2022-03-18 02:39:53,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:53,954 INFO L225 Difference]: With dead ends: 130 [2022-03-18 02:39:53,954 INFO L226 Difference]: Without dead ends: 128 [2022-03-18 02:39:53,955 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2022-03-18 02:39:53,955 INFO L912 BasicCegarLoop]: 32 mSDtfsCounter, 45 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:53,956 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 272 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 02:39:53,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-03-18 02:39:53,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2022-03-18 02:39:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 47 states have call successors, (47), 11 states have call predecessors, (47), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:39:53,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 172 transitions. [2022-03-18 02:39:53,977 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 172 transitions. Word has length 80 [2022-03-18 02:39:53,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:53,977 INFO L478 AbstractCegarLoop]: Abstraction has 126 states and 172 transitions. [2022-03-18 02:39:53,977 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-03-18 02:39:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 172 transitions. [2022-03-18 02:39:53,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-18 02:39:53,978 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:53,978 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 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, 1, 1, 1] [2022-03-18 02:39:54,004 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 02:39:54,191 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-18 02:39:54,191 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 901388446, now seen corresponding path program 5 times [2022-03-18 02:39:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:54,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1983724612] [2022-03-18 02:39:54,192 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 901388446, now seen corresponding path program 6 times [2022-03-18 02:39:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:54,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096717948] [2022-03-18 02:39:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:54,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:54,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:54,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850211855] [2022-03-18 02:39:54,202 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:39:54,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:54,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:54,204 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 02:39:54,206 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 02:39:54,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:39:54,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:54,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-18 02:39:54,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 31 proven. 8 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-03-18 02:39:54,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:54,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:54,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096717948] [2022-03-18 02:39:54,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:54,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850211855] [2022-03-18 02:39:54,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850211855] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:39:54,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:39:54,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-18 02:39:54,779 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:54,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1983724612] [2022-03-18 02:39:54,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1983724612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:54,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:54,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 02:39:54,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405154436] [2022-03-18 02:39:54,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:54,780 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 02:39:54,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 02:39:54,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 02:39:54,781 INFO L87 Difference]: Start difference. First operand 126 states and 172 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-03-18 02:39:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:55,167 INFO L93 Difference]: Finished difference Result 138 states and 182 transitions. [2022-03-18 02:39:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 02:39:55,168 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 85 [2022-03-18 02:39:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:55,169 INFO L225 Difference]: With dead ends: 138 [2022-03-18 02:39:55,169 INFO L226 Difference]: Without dead ends: 136 [2022-03-18 02:39:55,169 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-03-18 02:39:55,170 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 25 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:55,170 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 324 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 02:39:55,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-03-18 02:39:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2022-03-18 02:39:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 76 states have internal predecessors, (87), 47 states have call successors, (47), 13 states have call predecessors, (47), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:39:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 178 transitions. [2022-03-18 02:39:55,204 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 178 transitions. Word has length 85 [2022-03-18 02:39:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:55,204 INFO L478 AbstractCegarLoop]: Abstraction has 134 states and 178 transitions. [2022-03-18 02:39:55,204 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-03-18 02:39:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 178 transitions. [2022-03-18 02:39:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-18 02:39:55,207 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:55,207 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:55,233 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 02:39:55,430 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,SelfDestructingSolverStorable10 [2022-03-18 02:39:55,431 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash -686534738, now seen corresponding path program 1 times [2022-03-18 02:39:55,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:55,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1767419876] [2022-03-18 02:39:55,432 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash -686534738, now seen corresponding path program 2 times [2022-03-18 02:39:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:55,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038407329] [2022-03-18 02:39:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:55,441 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:55,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041440047] [2022-03-18 02:39:55,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:55,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:55,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:55,443 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 02:39:55,445 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 02:39:55,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:55,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:55,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-18 02:39:55,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-18 02:39:56,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-18 02:39:56,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:56,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038407329] [2022-03-18 02:39:56,811 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:56,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041440047] [2022-03-18 02:39:56,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041440047] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:56,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:56,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-03-18 02:39:56,812 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:56,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1767419876] [2022-03-18 02:39:56,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1767419876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:56,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:56,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 02:39:56,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041966951] [2022-03-18 02:39:56,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:56,813 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 02:39:56,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 02:39:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-18 02:39:56,814 INFO L87 Difference]: Start difference. First operand 134 states and 178 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 02:39:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:57,215 INFO L93 Difference]: Finished difference Result 161 states and 214 transitions. [2022-03-18 02:39:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 02:39:57,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 91 [2022-03-18 02:39:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:57,217 INFO L225 Difference]: With dead ends: 161 [2022-03-18 02:39:57,217 INFO L226 Difference]: Without dead ends: 158 [2022-03-18 02:39:57,217 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-03-18 02:39:57,218 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 20 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:57,218 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 423 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 02:39:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-03-18 02:39:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2022-03-18 02:39:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 89 states have internal predecessors, (102), 55 states have call successors, (55), 15 states have call predecessors, (55), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 02:39:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2022-03-18 02:39:57,244 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 91 [2022-03-18 02:39:57,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:57,244 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2022-03-18 02:39:57,244 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 02:39:57,244 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2022-03-18 02:39:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-18 02:39:57,245 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:57,246 INFO L500 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:57,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:57,463 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,SelfDestructingSolverStorable11 [2022-03-18 02:39:57,463 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:57,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash -663071842, now seen corresponding path program 7 times [2022-03-18 02:39:57,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:57,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [230962261] [2022-03-18 02:39:57,464 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash -663071842, now seen corresponding path program 8 times [2022-03-18 02:39:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:57,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636529822] [2022-03-18 02:39:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:57,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:57,477 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:57,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042296488] [2022-03-18 02:39:57,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:57,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:57,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:57,481 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 02:39:57,482 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 02:39:57,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:57,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:57,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 02:39:57,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-03-18 02:39:57,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:39:57,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:57,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636529822] [2022-03-18 02:39:57,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:57,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042296488] [2022-03-18 02:39:57,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042296488] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:57,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:57,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:57,661 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:57,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [230962261] [2022-03-18 02:39:57,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [230962261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:57,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:57,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:57,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446305884] [2022-03-18 02:39:57,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:57,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:39:57,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:57,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:39:57,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:39:57,665 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-18 02:39:57,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:57,732 INFO L93 Difference]: Finished difference Result 205 states and 283 transitions. [2022-03-18 02:39:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 02:39:57,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 100 [2022-03-18 02:39:57,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:57,734 INFO L225 Difference]: With dead ends: 205 [2022-03-18 02:39:57,734 INFO L226 Difference]: Without dead ends: 160 [2022-03-18 02:39:57,734 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:39:57,735 INFO L912 BasicCegarLoop]: 58 mSDtfsCounter, 6 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:57,735 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 188 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:39:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-03-18 02:39:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 151. [2022-03-18 02:39:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 81 states have (on average 1.123456790123457) internal successors, (91), 83 states have internal predecessors, (91), 55 states have call successors, (55), 15 states have call predecessors, (55), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 02:39:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2022-03-18 02:39:57,764 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 100 [2022-03-18 02:39:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:57,764 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2022-03-18 02:39:57,765 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-18 02:39:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2022-03-18 02:39:57,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-18 02:39:57,765 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:57,766 INFO L500 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 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, 1, 1, 1] [2022-03-18 02:39:57,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-18 02:39:57,979 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,SelfDestructingSolverStorable12 [2022-03-18 02:39:57,979 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash -428114403, now seen corresponding path program 1 times [2022-03-18 02:39:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:57,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1989330136] [2022-03-18 02:39:57,980 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash -428114403, now seen corresponding path program 2 times [2022-03-18 02:39:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:57,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525236058] [2022-03-18 02:39:57,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:57,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:57,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:57,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110005908] [2022-03-18 02:39:57,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:57,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:57,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:57,990 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 02:39:58,012 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 02:39:58,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:58,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:58,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 02:39:58,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-18 02:39:58,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-03-18 02:39:58,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:58,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525236058] [2022-03-18 02:39:58,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:58,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110005908] [2022-03-18 02:39:58,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110005908] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:58,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:58,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2022-03-18 02:39:58,557 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:58,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1989330136] [2022-03-18 02:39:58,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1989330136] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:58,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:58,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 02:39:58,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938535545] [2022-03-18 02:39:58,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:58,557 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 02:39:58,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:58,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 02:39:58,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-03-18 02:39:58,558 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-03-18 02:39:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:58,790 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2022-03-18 02:39:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 02:39:58,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 107 [2022-03-18 02:39:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:58,792 INFO L225 Difference]: With dead ends: 182 [2022-03-18 02:39:58,792 INFO L226 Difference]: Without dead ends: 132 [2022-03-18 02:39:58,794 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-03-18 02:39:58,795 INFO L912 BasicCegarLoop]: 52 mSDtfsCounter, 30 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:58,795 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 333 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:58,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-03-18 02:39:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-03-18 02:39:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 73 states have internal predecessors, (79), 47 states have call successors, (47), 14 states have call predecessors, (47), 13 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:39:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 170 transitions. [2022-03-18 02:39:58,821 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 170 transitions. Word has length 107 [2022-03-18 02:39:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:58,823 INFO L478 AbstractCegarLoop]: Abstraction has 132 states and 170 transitions. [2022-03-18 02:39:58,824 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-03-18 02:39:58,824 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 170 transitions. [2022-03-18 02:39:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-18 02:39:58,824 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:58,824 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:58,850 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 02:39:59,046 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,SelfDestructingSolverStorable13 [2022-03-18 02:39:59,047 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:59,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1185765869, now seen corresponding path program 3 times [2022-03-18 02:39:59,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:59,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1153012495] [2022-03-18 02:39:59,048 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:59,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1185765869, now seen corresponding path program 4 times [2022-03-18 02:39:59,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:59,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276530876] [2022-03-18 02:39:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:59,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:59,059 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:59,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230442681] [2022-03-18 02:39:59,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:39:59,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:59,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:59,061 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 02:39:59,062 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 02:39:59,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:39:59,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:59,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-18 02:39:59,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:59,687 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 61 proven. 58 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-03-18 02:40:00,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:01,854 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:06,690 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 55 proven. 45 refuted. 4 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 02:40:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:15,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276530876] [2022-03-18 02:40:15,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:15,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230442681] [2022-03-18 02:40:15,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230442681] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:15,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:15,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 28 [2022-03-18 02:40:15,989 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:15,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1153012495] [2022-03-18 02:40:15,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1153012495] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:15,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:15,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 02:40:15,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587722536] [2022-03-18 02:40:15,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:15,990 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 02:40:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:15,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 02:40:15,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=632, Unknown=4, NotChecked=0, Total=756 [2022-03-18 02:40:15,991 INFO L87 Difference]: Start difference. First operand 132 states and 170 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) [2022-03-18 02:40:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:17,596 INFO L93 Difference]: Finished difference Result 165 states and 216 transitions. [2022-03-18 02:40:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 02:40:17,596 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) Word has length 113 [2022-03-18 02:40:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:17,597 INFO L225 Difference]: With dead ends: 165 [2022-03-18 02:40:17,597 INFO L226 Difference]: Without dead ends: 162 [2022-03-18 02:40:17,598 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=180, Invalid=938, Unknown=4, NotChecked=0, Total=1122 [2022-03-18 02:40:17,598 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 43 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:17,599 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 413 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 02:40:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-03-18 02:40:17,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2022-03-18 02:40:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 86 states have (on average 1.1162790697674418) internal successors, (96), 88 states have internal predecessors, (96), 59 states have call successors, (59), 16 states have call predecessors, (59), 15 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-18 02:40:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 211 transitions. [2022-03-18 02:40:17,627 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 211 transitions. Word has length 113 [2022-03-18 02:40:17,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:17,628 INFO L478 AbstractCegarLoop]: Abstraction has 161 states and 211 transitions. [2022-03-18 02:40:17,628 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) [2022-03-18 02:40:17,628 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 211 transitions. [2022-03-18 02:40:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-18 02:40:17,629 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:17,629 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 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, 1, 1, 1] [2022-03-18 02:40:17,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-18 02:40:17,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:17,835 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash 884638574, now seen corresponding path program 5 times [2022-03-18 02:40:17,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:17,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1022677627] [2022-03-18 02:40:17,837 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:17,837 INFO L85 PathProgramCache]: Analyzing trace with hash 884638574, now seen corresponding path program 6 times [2022-03-18 02:40:17,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:17,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614218573] [2022-03-18 02:40:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:17,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:17,851 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:17,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132988676] [2022-03-18 02:40:17,852 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:40:17,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:17,853 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 02:40:17,854 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 02:40:17,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:40:17,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:17,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 02:40:17,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-03-18 02:40:18,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-03-18 02:40:18,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:18,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614218573] [2022-03-18 02:40:18,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:18,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132988676] [2022-03-18 02:40:18,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132988676] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:18,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:18,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-03-18 02:40:18,228 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:18,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1022677627] [2022-03-18 02:40:18,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1022677627] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:18,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:18,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 02:40:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462876772] [2022-03-18 02:40:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:18,229 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 02:40:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 02:40:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:40:18,229 INFO L87 Difference]: Start difference. First operand 161 states and 211 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-03-18 02:40:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:18,420 INFO L93 Difference]: Finished difference Result 215 states and 300 transitions. [2022-03-18 02:40:18,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 02:40:18,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 116 [2022-03-18 02:40:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:18,423 INFO L225 Difference]: With dead ends: 215 [2022-03-18 02:40:18,423 INFO L226 Difference]: Without dead ends: 207 [2022-03-18 02:40:18,423 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 227 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-03-18 02:40:18,424 INFO L912 BasicCegarLoop]: 85 mSDtfsCounter, 14 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:18,424 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 359 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:40:18,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-03-18 02:40:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 188. [2022-03-18 02:40:18,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 99 states have internal predecessors, (111), 75 states have call successors, (75), 16 states have call predecessors, (75), 15 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 02:40:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 258 transitions. [2022-03-18 02:40:18,471 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 258 transitions. Word has length 116 [2022-03-18 02:40:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:18,472 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 258 transitions. [2022-03-18 02:40:18,472 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-03-18 02:40:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 258 transitions. [2022-03-18 02:40:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-18 02:40:18,473 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:18,473 INFO L500 BasicCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1] [2022-03-18 02:40:18,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:18,695 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,SelfDestructingSolverStorable15 [2022-03-18 02:40:18,695 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash -743412771, now seen corresponding path program 3 times [2022-03-18 02:40:18,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:18,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [156405682] [2022-03-18 02:40:18,696 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash -743412771, now seen corresponding path program 4 times [2022-03-18 02:40:18,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:18,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000437106] [2022-03-18 02:40:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:18,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:18,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:18,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941125783] [2022-03-18 02:40:18,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:40:18,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:18,705 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 02:40:18,713 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 02:40:18,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:40:18,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:18,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-18 02:40:18,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2022-03-18 02:40:19,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-03-18 02:40:19,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:19,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000437106] [2022-03-18 02:40:19,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:19,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941125783] [2022-03-18 02:40:19,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941125783] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:19,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:19,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-03-18 02:40:19,277 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:19,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [156405682] [2022-03-18 02:40:19,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [156405682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:19,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:19,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 02:40:19,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203475287] [2022-03-18 02:40:19,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:19,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 02:40:19,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:19,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 02:40:19,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-18 02:40:19,279 INFO L87 Difference]: Start difference. First operand 188 states and 258 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-03-18 02:40:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:19,486 INFO L93 Difference]: Finished difference Result 221 states and 305 transitions. [2022-03-18 02:40:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 02:40:19,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 122 [2022-03-18 02:40:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:19,489 INFO L225 Difference]: With dead ends: 221 [2022-03-18 02:40:19,489 INFO L226 Difference]: Without dead ends: 185 [2022-03-18 02:40:19,490 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-03-18 02:40:19,490 INFO L912 BasicCegarLoop]: 56 mSDtfsCounter, 18 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:19,490 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 298 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:40:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-03-18 02:40:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-03-18 02:40:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 94 states have (on average 1.1063829787234043) internal successors, (104), 96 states have internal predecessors, (104), 75 states have call successors, (75), 16 states have call predecessors, (75), 15 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 02:40:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2022-03-18 02:40:19,538 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 122 [2022-03-18 02:40:19,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:19,538 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2022-03-18 02:40:19,539 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-03-18 02:40:19,539 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2022-03-18 02:40:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-03-18 02:40:19,540 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:19,540 INFO L500 BasicCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2022-03-18 02:40:19,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:19,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-18 02:40:19,759 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2138166692, now seen corresponding path program 5 times [2022-03-18 02:40:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:19,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [250526213] [2022-03-18 02:40:19,760 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2138166692, now seen corresponding path program 6 times [2022-03-18 02:40:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:19,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017043605] [2022-03-18 02:40:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:19,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:19,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:19,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315189133] [2022-03-18 02:40:19,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:40:19,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:19,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:19,776 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 02:40:19,776 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 02:40:19,854 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:40:19,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:19,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-18 02:40:19,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 105 proven. 80 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-03-18 02:40:21,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:26,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:26,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017043605] [2022-03-18 02:40:26,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:26,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315189133] [2022-03-18 02:40:26,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315189133] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:40:26,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:40:26,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-03-18 02:40:26,564 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:26,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [250526213] [2022-03-18 02:40:26,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [250526213] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:26,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:26,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 02:40:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922015171] [2022-03-18 02:40:26,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:26,565 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 02:40:26,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:26,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 02:40:26,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-03-18 02:40:26,565 INFO L87 Difference]: Start difference. First operand 185 states and 251 transitions. Second operand has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2022-03-18 02:40:29,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:29,393 INFO L93 Difference]: Finished difference Result 196 states and 260 transitions. [2022-03-18 02:40:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:40:29,397 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) Word has length 129 [2022-03-18 02:40:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:29,399 INFO L225 Difference]: With dead ends: 196 [2022-03-18 02:40:29,399 INFO L226 Difference]: Without dead ends: 194 [2022-03-18 02:40:29,399 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=171, Invalid=698, Unknown=1, NotChecked=0, Total=870 [2022-03-18 02:40:29,400 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 38 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:29,400 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 258 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 02:40:29,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-03-18 02:40:29,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2022-03-18 02:40:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 100 states have (on average 1.1) internal successors, (110), 102 states have internal predecessors, (110), 75 states have call successors, (75), 18 states have call predecessors, (75), 17 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 02:40:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 257 transitions. [2022-03-18 02:40:29,438 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 257 transitions. Word has length 129 [2022-03-18 02:40:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:29,438 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 257 transitions. [2022-03-18 02:40:29,439 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2022-03-18 02:40:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 257 transitions. [2022-03-18 02:40:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-18 02:40:29,440 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:29,440 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 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 02:40:29,466 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 02:40:29,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-18 02:40:29,656 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:29,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:29,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1068997356, now seen corresponding path program 7 times [2022-03-18 02:40:29,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:29,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1271173268] [2022-03-18 02:40:29,656 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1068997356, now seen corresponding path program 8 times [2022-03-18 02:40:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:29,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259492792] [2022-03-18 02:40:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:29,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:29,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588082208] [2022-03-18 02:40:29,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:40:29,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:29,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:29,675 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:29,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-18 02:40:29,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:40:29,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:29,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-18 02:40:29,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-03-18 02:40:29,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-03-18 02:40:30,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259492792] [2022-03-18 02:40:30,240 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588082208] [2022-03-18 02:40:30,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588082208] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:30,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:30,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-03-18 02:40:30,240 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1271173268] [2022-03-18 02:40:30,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1271173268] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:30,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:30,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 02:40:30,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613149999] [2022-03-18 02:40:30,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:30,241 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 02:40:30,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 02:40:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-03-18 02:40:30,242 INFO L87 Difference]: Start difference. First operand 193 states and 257 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 8 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-18 02:40:30,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:30,497 INFO L93 Difference]: Finished difference Result 234 states and 309 transitions. [2022-03-18 02:40:30,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 02:40:30,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 8 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 135 [2022-03-18 02:40:30,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:30,500 INFO L225 Difference]: With dead ends: 234 [2022-03-18 02:40:30,501 INFO L226 Difference]: Without dead ends: 165 [2022-03-18 02:40:30,501 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-03-18 02:40:30,502 INFO L912 BasicCegarLoop]: 65 mSDtfsCounter, 27 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:30,502 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 447 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:40:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-03-18 02:40:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2022-03-18 02:40:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 72 states have internal predecessors, (76), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:40:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 166 transitions. [2022-03-18 02:40:30,529 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 166 transitions. Word has length 135 [2022-03-18 02:40:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:30,530 INFO L478 AbstractCegarLoop]: Abstraction has 132 states and 166 transitions. [2022-03-18 02:40:30,530 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 8 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-18 02:40:30,530 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 166 transitions. [2022-03-18 02:40:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-18 02:40:30,531 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:30,531 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2022-03-18 02:40:30,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:30,739 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:30,739 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -896647763, now seen corresponding path program 9 times [2022-03-18 02:40:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:30,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1232233286] [2022-03-18 02:40:30,740 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -896647763, now seen corresponding path program 10 times [2022-03-18 02:40:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:30,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552788765] [2022-03-18 02:40:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:30,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:30,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:30,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497753840] [2022-03-18 02:40:30,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:40:30,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:30,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:30,749 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:30,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-18 02:40:30,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:40:30,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:30,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 83 conjunts are in the unsatisfiable core [2022-03-18 02:40:30,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:32,078 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:32,081 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 139 proven. 104 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-03-18 02:40:32,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:33,175 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 154 proven. 12 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2022-03-18 02:40:33,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:33,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552788765] [2022-03-18 02:40:33,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:33,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497753840] [2022-03-18 02:40:33,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497753840] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:33,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:33,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12] total 30 [2022-03-18 02:40:33,380 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:33,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1232233286] [2022-03-18 02:40:33,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1232233286] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:33,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:33,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 02:40:33,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253348730] [2022-03-18 02:40:33,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:33,381 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 02:40:33,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:33,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 02:40:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2022-03-18 02:40:33,382 INFO L87 Difference]: Start difference. First operand 132 states and 166 transitions. Second operand has 23 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 12 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 10 states have call predecessors, (23), 11 states have call successors, (23) [2022-03-18 02:40:33,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:33,953 INFO L93 Difference]: Finished difference Result 243 states and 320 transitions. [2022-03-18 02:40:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 02:40:33,953 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 12 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 10 states have call predecessors, (23), 11 states have call successors, (23) Word has length 138 [2022-03-18 02:40:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:33,955 INFO L225 Difference]: With dead ends: 243 [2022-03-18 02:40:33,955 INFO L226 Difference]: Without dead ends: 192 [2022-03-18 02:40:33,956 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2022-03-18 02:40:33,956 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 36 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:33,956 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 466 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 562 Invalid, 0 Unknown, 112 Unchecked, 0.4s Time] [2022-03-18 02:40:33,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-03-18 02:40:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 169. [2022-03-18 02:40:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 92 states have (on average 1.065217391304348) internal successors, (98), 94 states have internal predecessors, (98), 59 states have call successors, (59), 18 states have call predecessors, (59), 17 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-03-18 02:40:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 214 transitions. [2022-03-18 02:40:34,008 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 214 transitions. Word has length 138 [2022-03-18 02:40:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:34,009 INFO L478 AbstractCegarLoop]: Abstraction has 169 states and 214 transitions. [2022-03-18 02:40:34,009 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 12 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 10 states have call predecessors, (23), 11 states have call successors, (23) [2022-03-18 02:40:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 214 transitions. [2022-03-18 02:40:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-18 02:40:34,010 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:34,010 INFO L500 BasicCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-03-18 02:40:34,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:34,231 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:34,231 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash -206620137, now seen corresponding path program 1 times [2022-03-18 02:40:34,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:34,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1980934393] [2022-03-18 02:40:34,232 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:34,233 INFO L85 PathProgramCache]: Analyzing trace with hash -206620137, now seen corresponding path program 2 times [2022-03-18 02:40:34,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:34,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270657415] [2022-03-18 02:40:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:34,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:34,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:34,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919025285] [2022-03-18 02:40:34,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:40:34,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:34,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:34,245 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:34,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-18 02:40:34,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:40:34,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:34,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-18 02:40:34,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 86 proven. 7 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2022-03-18 02:40:34,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 86 proven. 7 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2022-03-18 02:40:34,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:34,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270657415] [2022-03-18 02:40:34,688 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:34,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919025285] [2022-03-18 02:40:34,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919025285] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:34,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:34,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-18 02:40:34,689 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:34,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1980934393] [2022-03-18 02:40:34,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1980934393] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:34,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:34,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 02:40:34,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253991848] [2022-03-18 02:40:34,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:34,690 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 02:40:34,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 02:40:34,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:40:34,691 INFO L87 Difference]: Start difference. First operand 169 states and 214 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-03-18 02:40:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:34,927 INFO L93 Difference]: Finished difference Result 175 states and 219 transitions. [2022-03-18 02:40:34,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 02:40:34,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 143 [2022-03-18 02:40:34,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:34,933 INFO L225 Difference]: With dead ends: 175 [2022-03-18 02:40:34,933 INFO L226 Difference]: Without dead ends: 167 [2022-03-18 02:40:34,933 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 02:40:34,933 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:34,934 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 182 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 02:40:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-03-18 02:40:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-03-18 02:40:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 93 states have internal predecessors, (97), 57 states have call successors, (57), 18 states have call predecessors, (57), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-03-18 02:40:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 209 transitions. [2022-03-18 02:40:34,970 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 209 transitions. Word has length 143 [2022-03-18 02:40:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:34,971 INFO L478 AbstractCegarLoop]: Abstraction has 167 states and 209 transitions. [2022-03-18 02:40:34,971 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-03-18 02:40:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 209 transitions. [2022-03-18 02:40:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-18 02:40:34,972 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:34,972 INFO L500 BasicCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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 02:40:34,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:35,196 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-18 02:40:35,196 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:35,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:35,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1351165176, now seen corresponding path program 7 times [2022-03-18 02:40:35,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:35,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [309452324] [2022-03-18 02:40:35,197 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:35,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1351165176, now seen corresponding path program 8 times [2022-03-18 02:40:35,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:35,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176743070] [2022-03-18 02:40:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:35,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:35,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299453947] [2022-03-18 02:40:35,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:40:35,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:35,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:35,221 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:35,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-18 02:40:35,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:40:35,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:35,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-18 02:40:35,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 187 proven. 47 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2022-03-18 02:40:35,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 57 proven. 53 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2022-03-18 02:40:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176743070] [2022-03-18 02:40:36,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299453947] [2022-03-18 02:40:36,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299453947] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:36,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:36,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2022-03-18 02:40:36,023 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [309452324] [2022-03-18 02:40:36,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [309452324] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:36,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:36,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 02:40:36,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995269380] [2022-03-18 02:40:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:36,024 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 02:40:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 02:40:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-03-18 02:40:36,024 INFO L87 Difference]: Start difference. First operand 167 states and 209 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-03-18 02:40:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:36,444 INFO L93 Difference]: Finished difference Result 219 states and 283 transitions. [2022-03-18 02:40:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 02:40:36,444 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 149 [2022-03-18 02:40:36,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:36,446 INFO L225 Difference]: With dead ends: 219 [2022-03-18 02:40:36,446 INFO L226 Difference]: Without dead ends: 155 [2022-03-18 02:40:36,446 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-03-18 02:40:36,447 INFO L912 BasicCegarLoop]: 64 mSDtfsCounter, 31 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:36,447 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 472 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 02:40:36,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-03-18 02:40:36,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2022-03-18 02:40:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 85 states have internal predecessors, (90), 53 states have call successors, (53), 17 states have call predecessors, (53), 16 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-18 02:40:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2022-03-18 02:40:36,478 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 149 [2022-03-18 02:40:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:36,479 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2022-03-18 02:40:36,479 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-03-18 02:40:36,479 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2022-03-18 02:40:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-03-18 02:40:36,480 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:36,480 INFO L500 BasicCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 1, 1] [2022-03-18 02:40:36,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:36,693 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-18 02:40:36,693 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash -804600145, now seen corresponding path program 11 times [2022-03-18 02:40:36,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:36,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1159638671] [2022-03-18 02:40:36,694 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash -804600145, now seen corresponding path program 12 times [2022-03-18 02:40:36,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:36,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672382864] [2022-03-18 02:40:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:36,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:36,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:36,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904959812] [2022-03-18 02:40:36,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:40:36,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:36,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:36,709 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:36,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-18 02:40:37,439 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-18 02:40:37,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:37,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-18 02:40:37,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:38,759 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:51,285 WARN L232 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 02:40:51,392 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 178 proven. 96 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2022-03-18 02:40:52,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:53,944 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:58,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:58,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672382864] [2022-03-18 02:40:58,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:58,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904959812] [2022-03-18 02:40:58,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904959812] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:40:58,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:40:58,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-03-18 02:40:58,498 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:58,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1159638671] [2022-03-18 02:40:58,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1159638671] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:58,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:58,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 02:40:58,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673770824] [2022-03-18 02:40:58,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:58,498 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 02:40:58,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:58,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 02:40:58,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=649, Unknown=1, NotChecked=0, Total=756 [2022-03-18 02:40:58,499 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 8 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-18 02:41:02,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 02:41:18,915 WARN L232 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 46 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 02:41:21,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 02:41:23,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 02:41:25,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 02:41:27,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 02:41:27,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:27,810 INFO L93 Difference]: Finished difference Result 167 states and 206 transitions. [2022-03-18 02:41:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 02:41:27,810 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 8 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) Word has length 182 [2022-03-18 02:41:27,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:27,811 INFO L225 Difference]: With dead ends: 167 [2022-03-18 02:41:27,811 INFO L226 Difference]: Without dead ends: 157 [2022-03-18 02:41:27,812 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=199, Invalid=1204, Unknown=3, NotChecked=0, Total=1406 [2022-03-18 02:41:27,812 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 46 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 53 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:27,812 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 297 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 710 Invalid, 4 Unknown, 9 Unchecked, 10.7s Time] [2022-03-18 02:41:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-03-18 02:41:27,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2022-03-18 02:41:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 85 states have internal predecessors, (89), 53 states have call successors, (53), 17 states have call predecessors, (53), 16 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-18 02:41:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 193 transitions. [2022-03-18 02:41:27,855 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 193 transitions. Word has length 182 [2022-03-18 02:41:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:27,856 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 193 transitions. [2022-03-18 02:41:27,856 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 8 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-18 02:41:27,856 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 193 transitions. [2022-03-18 02:41:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-03-18 02:41:27,857 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:27,858 INFO L500 BasicCegarLoop]: trace histogram [29, 28, 28, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 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, 1, 1] [2022-03-18 02:41:27,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:28,066 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:28,066 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash -611177938, now seen corresponding path program 13 times [2022-03-18 02:41:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:28,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1945713089] [2022-03-18 02:41:28,067 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash -611177938, now seen corresponding path program 14 times [2022-03-18 02:41:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:28,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205852112] [2022-03-18 02:41:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:28,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:28,087 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:28,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926436701] [2022-03-18 02:41:28,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:28,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:28,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:28,088 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:28,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-18 02:41:28,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:28,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:28,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 02:41:28,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1761 backedges. 61 proven. 143 refuted. 0 times theorem prover too weak. 1557 trivial. 0 not checked. [2022-03-18 02:41:28,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1761 backedges. 73 proven. 131 refuted. 0 times theorem prover too weak. 1557 trivial. 0 not checked. [2022-03-18 02:41:29,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:29,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205852112] [2022-03-18 02:41:29,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:29,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926436701] [2022-03-18 02:41:29,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926436701] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:29,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:29,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-03-18 02:41:29,277 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:29,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1945713089] [2022-03-18 02:41:29,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1945713089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:29,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:29,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 02:41:29,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072020838] [2022-03-18 02:41:29,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:29,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 02:41:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:29,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 02:41:29,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-03-18 02:41:29,279 INFO L87 Difference]: Start difference. First operand 154 states and 193 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 11 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2022-03-18 02:41:29,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:29,945 INFO L93 Difference]: Finished difference Result 158 states and 196 transitions. [2022-03-18 02:41:29,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:41:29,946 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 11 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) Word has length 204 [2022-03-18 02:41:29,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:29,946 INFO L225 Difference]: With dead ends: 158 [2022-03-18 02:41:29,946 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 02:41:29,947 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2022-03-18 02:41:29,947 INFO L912 BasicCegarLoop]: 73 mSDtfsCounter, 23 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:29,948 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 621 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 02:41:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 02:41:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 02:41:29,948 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 02:41:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 02:41:29,948 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 204 [2022-03-18 02:41:29,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:29,948 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 02:41:29,949 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 11 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2022-03-18 02:41:29,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 02:41:29,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 02:41:29,951 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 02:41:29,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:30,159 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:30,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 02:41:38,420 WARN L232 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 179 DAG size of output: 178 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 02:41:51,583 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-03-18 02:41:51,583 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-03-18 02:41:51,583 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-03-18 02:41:51,583 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-03-18 02:41:51,583 INFO L878 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-03-18 02:41:51,583 INFO L878 garLoopResultBuilder]: At program point L8-2(lines 7 9) 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 02:41:51,583 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 7 9) 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 02:41:51,584 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 2) (<= main_~x~0 2)) [2022-03-18 02:41:51,584 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 18 74) the Hoare annotation is: true [2022-03-18 02:41:51,584 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse22 (* main_~b~0 2)) (.cse23 (* main_~b~0 main_~k~0))) (let ((.cse11 (<= main_~y~0 2)) (.cse13 (= main_~s~0 1)) (.cse12 (+ main_~c~0 main_~b~0)) (.cse14 (= main_~b~0 main_~y~0)) (.cse15 (= main_~q~0 0)) (.cse16 (<= 1 main_~y~0)) (.cse17 (= main_~a~0 main_~x~0)) (.cse18 (<= main_~x~0 2)) (.cse19 (= main_~p~0 1)) (.cse0 (= main_~a~0 (+ main_~c~0 .cse23))) (.cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse2 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse3 (= main_~r~0 1)) (.cse4 (= main_~a~0 main_~y~0)) (.cse5 (= main_~b~0 main_~x~0)) (.cse6 (< main_~x~0 main_~a~0)) (.cse21 (= .cse23 .cse22)) (.cse7 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse20 (+ main_~c~0 .cse22)) (.cse8 (<= 1 main_~b~0)) (.cse9 (= main_~q~0 1)) (.cse10 (= main_~xy~0 (* main_~y~0 main_~x~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (< main_~b~0 main_~c~0) .cse5 (<= main_~c~0 2) .cse6 (<= main_~a~0 2) .cse7 .cse8 .cse9 .cse10) (and (< 0 main_~c~0) .cse0 .cse1 .cse11 (= main_~p~0 0) .cse2 .cse4 .cse5 .cse6 (<= .cse12 2) .cse7 .cse8 .cse9 .cse10) (and .cse11 (= main_~k~0 0) .cse13 .cse2 (<= 1 main_~a~0) .cse14 .cse7 .cse15 .cse16 .cse10 .cse17 (= main_~c~0 main_~x~0) .cse18 .cse19) (and .cse13 .cse2 .cse14 (= .cse20 main_~a~0) .cse21 .cse7 .cse15 .cse16 .cse10 .cse17 (<= .cse22 main_~a~0) .cse18 .cse19) (and .cse13 .cse2 (= main_~a~0 .cse12) (<= 0 main_~c~0) .cse14 (= main_~k~0 1) .cse7 .cse15 .cse16 .cse10 .cse17 .cse18 .cse19) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse21 .cse7 (<= .cse20 2) .cse8 .cse9 .cse10)))) [2022-03-18 02:41:51,584 INFO L878 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse20 (* main_~b~0 main_~k~0))) (let ((.cse12 (= main_~p~0 0)) (.cse19 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse13 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse14 (= main_~a~0 main_~y~0)) (.cse15 (= main_~b~0 main_~x~0)) (.cse21 (* main_~b~0 2)) (.cse16 (< main_~x~0 main_~a~0)) (.cse17 (<= 1 main_~b~0)) (.cse18 (= main_~q~0 1)) (.cse0 (= main_~r~0 0)) (.cse1 (= main_~a~0 (+ main_~c~0 .cse20))) (.cse2 (<= main_~y~0 2)) (.cse3 (= main_~s~0 1)) (.cse4 (= main_~b~0 main_~y~0)) (.cse5 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse6 (= main_~q~0 0)) (.cse7 (<= 1 main_~y~0)) (.cse8 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse9 (= main_~a~0 main_~x~0)) (.cse10 (<= main_~x~0 2)) (.cse11 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 1 main_~a~0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= main_~c~0 main_~x~0) .cse10 .cse11) (and .cse1 (= main_~s~0 0) .cse2 .cse12 .cse13 .cse14 (< main_~b~0 main_~c~0) .cse15 (<= main_~c~0 2) .cse16 .cse5 .cse17 .cse18 .cse8) (and (< 0 main_~c~0) .cse1 .cse19 .cse2 .cse12 .cse13 .cse14 .cse15 .cse16 (<= (+ main_~c~0 main_~b~0) 2) .cse5 .cse17 .cse18 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= .cse20 .cse21) .cse5 .cse6 .cse7 .cse8 .cse9 (<= .cse21 main_~a~0) .cse10 .cse11) (and .cse1 .cse19 .cse2 .cse13 (= main_~r~0 1) .cse14 .cse15 (= (+ main_~c~0 .cse21) main_~a~0) .cse16 .cse5 .cse17 .cse18 .cse8) (and .cse0 .cse1 .cse2 .cse3 (<= 0 main_~c~0) .cse4 (= main_~k~0 1) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11)))) [2022-03-18 02:41:51,584 INFO L878 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse23 (* main_~b~0 2))) (let ((.cse21 (+ main_~c~0 .cse23)) (.cse22 (* main_~b~0 main_~k~0))) (let ((.cse1 (= main_~p~0 0)) (.cse11 (<= main_~y~0 2)) (.cse0 (= main_~a~0 (+ main_~c~0 .cse22))) (.cse10 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse3 (= main_~a~0 main_~y~0)) (.cse4 (= main_~b~0 main_~x~0)) (.cse5 (< main_~x~0 main_~a~0)) (.cse7 (<= 1 main_~b~0)) (.cse8 (= main_~q~0 1)) (.cse20 (= .cse21 main_~a~0)) (.cse13 (= main_~s~0 1)) (.cse2 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse12 (+ main_~c~0 main_~b~0)) (.cse14 (= main_~b~0 main_~y~0)) (.cse6 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse15 (= main_~q~0 0)) (.cse16 (<= 1 main_~y~0)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse17 (= main_~a~0 main_~x~0)) (.cse18 (<= main_~x~0 2)) (.cse19 (= main_~p~0 1))) (or (and .cse0 (= main_~s~0 0) .cse1 .cse2 .cse3 (< main_~b~0 main_~c~0) .cse4 (<= main_~c~0 2) .cse5 (<= main_~a~0 2) .cse6 .cse7 .cse8 .cse9) (and (< 0 main_~c~0) .cse0 .cse10 .cse11 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse12 2) .cse6 .cse7 .cse8 .cse9) (and .cse11 (= main_~k~0 0) .cse13 .cse2 (<= 1 main_~a~0) .cse14 .cse6 .cse15 .cse16 .cse9 .cse17 (= main_~c~0 main_~x~0) .cse18 .cse19) (and .cse0 .cse10 .cse2 (= main_~r~0 1) .cse3 .cse4 .cse20 .cse5 .cse6 (<= .cse21 2) .cse7 .cse8 .cse9) (and .cse13 .cse2 .cse14 .cse20 (= .cse22 .cse23) .cse6 .cse15 .cse16 .cse9 .cse17 (<= .cse23 main_~a~0) .cse18 .cse19) (and .cse13 .cse2 (= main_~a~0 .cse12) (<= 0 main_~c~0) .cse14 (= main_~k~0 1) .cse6 .cse15 .cse16 .cse9 .cse17 .cse18 .cse19))))) [2022-03-18 02:41:51,584 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 18 74) the Hoare annotation is: true [2022-03-18 02:41:51,585 INFO L878 garLoopResultBuilder]: At program point L42(lines 42 43) the Hoare annotation is: (let ((.cse4 (* main_~y~0 2)) (.cse14 (<= 0 main_~b~0)) (.cse17 (<= 1 main_~y~0)) (.cse7 (<= main_~x~0 2)) (.cse1 (= main_~p~0 0)) (.cse2 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse16 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse6 (= main_~q~0 1)) (.cse18 (= main_~xy~0 (* main_~y~0 main_~x~0)))) (let ((.cse0 (< main_~b~0 main_~a~0)) (.cse8 (let ((.cse20 (= main_~a~0 main_~y~0))) (or (let ((.cse19 (* main_~y~0 main_~s~0))) (and .cse1 (= (+ .cse4 .cse19) 0) .cse2 (= (+ main_~x~0 .cse19) main_~b~0) .cse20 .cse16 .cse14 .cse6 .cse17 .cse18 .cse7)) (and (<= 1 main_~c~0) (= main_~s~0 0) .cse1 .cse2 .cse20 (= main_~b~0 main_~x~0) (< main_~x~0 main_~a~0) .cse16 (<= 1 main_~b~0) .cse6 .cse18)))) (.cse5 (<= main_~a~0 2)) (.cse9 (< main_~c~0 (div (+ (* (- 1) main_~c~0) 2) 2))) (.cse10 (= main_~s~0 1)) (.cse3 (<= 0 main_~c~0)) (.cse15 (+ main_~c~0 main_~b~0))) (or (and .cse0 (< (* main_~c~0 2) 2) .cse1 .cse2 .cse3 (< main_~x~0 .cse4) .cse5 (= main_~x~0 (+ main_~b~0 main_~y~0)) .cse6 (= (+ main_~s~0 1) 0) .cse7 (<= main_~y~0 main_~x~0)) (and .cse8 (<= main_~c~0 2) (<= main_~a~0 (div (+ 2 (* (- 1) main_~b~0)) 2))) (and .cse0 (<= 1 main_~x~0) (<= main_~y~0 2) .cse9 .cse10 .cse2 .cse3 .cse5 (exists ((main_~k~0 Int)) (let ((.cse11 (* (- 1) main_~q~0))) (let ((.cse13 (div .cse11 main_~k~0))) (let ((.cse12 (* main_~x~0 .cse13))) (and (= (mod .cse11 main_~k~0) 0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) main_~y~0)) (= (* 2 .cse12) (* main_~k~0 main_~x~0 .cse13)) (= main_~x~0 .cse12)))))) .cse14) (and (= main_~a~0 .cse15) .cse8 .cse5) (and .cse9 .cse10 .cse2 (<= 1 main_~a~0) .cse3 (= main_~b~0 main_~y~0) (<= .cse15 2) .cse16 (= main_~q~0 0) .cse17 .cse18 (= main_~a~0 main_~x~0) .cse7 (= main_~p~0 1))))) [2022-03-18 02:41:51,585 INFO L878 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (<= 1 main_~x~0)) (.cse1 (<= main_~y~0 2)) (.cse2 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse3 (<= 1 main_~y~0))) (or (and .cse0 .cse1 (= main_~p~0 0) .cse2 .cse3) (and (< main_~b~0 main_~a~0) .cse0 .cse1 (< (* main_~b~0 2) 2) .cse2 (<= 0 main_~b~0) .cse3 (<= main_~x~0 2)))) [2022-03-18 02:41:51,585 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (< main_~c~0 (div (+ (* (- 1) main_~c~0) 2) 2)) (= main_~s~0 1) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= 1 main_~a~0) (<= 0 main_~c~0) (= main_~b~0 main_~y~0) (<= (+ main_~c~0 main_~b~0) 2) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (<= 1 main_~y~0) (= main_~xy~0 (* main_~y~0 main_~x~0)) (= main_~a~0 main_~x~0) (<= main_~x~0 2) (= main_~p~0 1)) [2022-03-18 02:41:51,585 INFO L878 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (< main_~c~0 (div (+ (* (- 1) main_~c~0) 2) 2)) (= main_~s~0 1) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= 1 main_~a~0) (<= 0 main_~c~0) (= main_~b~0 main_~y~0) (<= (+ main_~c~0 main_~b~0) 2) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (<= 1 main_~y~0) (= main_~xy~0 (* main_~y~0 main_~x~0)) (= main_~a~0 main_~x~0) (<= main_~x~0 2) (= main_~p~0 1)) [2022-03-18 02:41:51,585 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 74) the Hoare annotation is: true [2022-03-18 02:41:51,585 INFO L878 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= 1 main_~x~0) (<= main_~y~0 2) (<= 1 main_~y~0) (<= main_~x~0 2)) [2022-03-18 02:41:51,585 INFO L878 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-03-18 02:41:51,585 INFO L878 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 2) (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-03-18 02:41:51,585 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-03-18 02:41:51,585 INFO L878 garLoopResultBuilder]: At program point L22-1(line 22) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-03-18 02:41:51,586 INFO L878 garLoopResultBuilder]: At program point L51(lines 47 56) the Hoare annotation is: (let ((.cse22 (* main_~b~0 2)) (.cse23 (* main_~b~0 main_~k~0))) (let ((.cse11 (<= main_~y~0 2)) (.cse13 (= main_~s~0 1)) (.cse12 (+ main_~c~0 main_~b~0)) (.cse14 (= main_~b~0 main_~y~0)) (.cse15 (= main_~q~0 0)) (.cse16 (<= 1 main_~y~0)) (.cse17 (= main_~a~0 main_~x~0)) (.cse18 (<= main_~x~0 2)) (.cse19 (= main_~p~0 1)) (.cse0 (= main_~a~0 (+ main_~c~0 .cse23))) (.cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse2 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse3 (= main_~r~0 1)) (.cse4 (= main_~a~0 main_~y~0)) (.cse5 (= main_~b~0 main_~x~0)) (.cse6 (< main_~x~0 main_~a~0)) (.cse21 (= .cse23 .cse22)) (.cse7 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse20 (+ main_~c~0 .cse22)) (.cse8 (<= 1 main_~b~0)) (.cse9 (= main_~q~0 1)) (.cse10 (= main_~xy~0 (* main_~y~0 main_~x~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (< main_~b~0 main_~c~0) .cse5 (<= main_~c~0 2) .cse6 (<= main_~a~0 2) .cse7 .cse8 .cse9 .cse10) (and (< 0 main_~c~0) .cse0 .cse1 .cse11 (= main_~p~0 0) .cse2 .cse4 .cse5 .cse6 (<= .cse12 2) .cse7 .cse8 .cse9 .cse10) (and .cse11 (= main_~k~0 0) .cse13 .cse2 (<= 1 main_~a~0) .cse14 .cse7 .cse15 .cse16 .cse10 .cse17 (= main_~c~0 main_~x~0) .cse18 .cse19) (and .cse13 .cse2 .cse14 (= .cse20 main_~a~0) .cse21 .cse7 .cse15 .cse16 .cse10 .cse17 (<= .cse22 main_~a~0) .cse18 .cse19) (and .cse13 .cse2 (= main_~a~0 .cse12) (<= 0 main_~c~0) .cse14 (= main_~k~0 1) .cse7 .cse15 .cse16 .cse10 .cse17 .cse18 .cse19) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse21 .cse7 (<= .cse20 2) .cse8 .cse9 .cse10)))) [2022-03-18 02:41:51,586 INFO L878 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse23 (* main_~b~0 2))) (let ((.cse21 (+ main_~c~0 .cse23)) (.cse22 (* main_~b~0 main_~k~0))) (let ((.cse1 (= main_~p~0 0)) (.cse11 (<= main_~y~0 2)) (.cse0 (= main_~a~0 (+ main_~c~0 .cse22))) (.cse10 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse3 (= main_~a~0 main_~y~0)) (.cse4 (= main_~b~0 main_~x~0)) (.cse5 (< main_~x~0 main_~a~0)) (.cse7 (<= 1 main_~b~0)) (.cse8 (= main_~q~0 1)) (.cse20 (= .cse21 main_~a~0)) (.cse13 (= main_~s~0 1)) (.cse2 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse12 (+ main_~c~0 main_~b~0)) (.cse14 (= main_~b~0 main_~y~0)) (.cse6 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse15 (= main_~q~0 0)) (.cse16 (<= 1 main_~y~0)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse17 (= main_~a~0 main_~x~0)) (.cse18 (<= main_~x~0 2)) (.cse19 (= main_~p~0 1))) (or (and .cse0 (= main_~s~0 0) .cse1 .cse2 .cse3 (< main_~b~0 main_~c~0) .cse4 (<= main_~c~0 2) .cse5 (<= main_~a~0 2) .cse6 .cse7 .cse8 .cse9) (and (< 0 main_~c~0) .cse0 .cse10 .cse11 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse12 2) .cse6 .cse7 .cse8 .cse9) (and .cse11 (= main_~k~0 0) .cse13 .cse2 (<= 1 main_~a~0) .cse14 .cse6 .cse15 .cse16 .cse9 .cse17 (= main_~c~0 main_~x~0) .cse18 .cse19) (and .cse0 .cse10 .cse2 (= main_~r~0 1) .cse3 .cse4 .cse20 .cse5 .cse6 (<= .cse21 2) .cse7 .cse8 .cse9) (and .cse13 .cse2 .cse14 .cse20 (= .cse22 .cse23) .cse6 .cse15 .cse16 .cse9 .cse17 (<= .cse23 main_~a~0) .cse18 .cse19) (and .cse13 .cse2 (= main_~a~0 .cse12) (<= 0 main_~c~0) .cse14 (= main_~k~0 1) .cse6 .cse15 .cse16 .cse9 .cse17 .cse18 .cse19))))) [2022-03-18 02:41:51,586 INFO L878 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse20 (* main_~b~0 main_~k~0))) (let ((.cse12 (= main_~p~0 0)) (.cse19 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse13 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse14 (= main_~a~0 main_~y~0)) (.cse15 (= main_~b~0 main_~x~0)) (.cse21 (* main_~b~0 2)) (.cse16 (< main_~x~0 main_~a~0)) (.cse17 (<= 1 main_~b~0)) (.cse18 (= main_~q~0 1)) (.cse0 (= main_~r~0 0)) (.cse1 (= main_~a~0 (+ main_~c~0 .cse20))) (.cse2 (<= main_~y~0 2)) (.cse3 (= main_~s~0 1)) (.cse4 (= main_~b~0 main_~y~0)) (.cse5 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse6 (= main_~q~0 0)) (.cse7 (<= 1 main_~y~0)) (.cse8 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse9 (= main_~a~0 main_~x~0)) (.cse10 (<= main_~x~0 2)) (.cse11 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 1 main_~a~0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= main_~c~0 main_~x~0) .cse10 .cse11) (and .cse1 (= main_~s~0 0) .cse2 .cse12 .cse13 .cse14 (< main_~b~0 main_~c~0) .cse15 (<= main_~c~0 2) .cse16 .cse5 .cse17 .cse18 .cse8) (and (< 0 main_~c~0) .cse1 .cse19 .cse2 .cse12 .cse13 .cse14 .cse15 .cse16 (<= (+ main_~c~0 main_~b~0) 2) .cse5 .cse17 .cse18 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= .cse20 .cse21) .cse5 .cse6 .cse7 .cse8 .cse9 (<= .cse21 main_~a~0) .cse10 .cse11) (and .cse1 .cse19 .cse2 .cse13 (= main_~r~0 1) .cse14 .cse15 (= (+ main_~c~0 .cse21) main_~a~0) .cse16 .cse5 .cse17 .cse18 .cse8) (and .cse0 .cse1 .cse2 .cse3 (<= 0 main_~c~0) .cse4 (= main_~k~0 1) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11)))) [2022-03-18 02:41:51,586 INFO L878 garLoopResultBuilder]: At program point L47-3(lines 47 56) the Hoare annotation is: (let ((.cse14 (* main_~b~0 main_~k~0))) (let ((.cse6 (= main_~q~0 0)) (.cse5 (= main_~b~0 main_~y~0)) (.cse7 (< main_~c~0 main_~b~0)) (.cse0 (= main_~r~0 0)) (.cse1 (= main_~a~0 (+ main_~c~0 .cse14))) (.cse2 (<= 1 main_~x~0)) (.cse3 (<= main_~y~0 2)) (.cse4 (= main_~s~0 1)) (.cse8 (<= 1 main_~y~0)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse10 (= main_~a~0 main_~x~0)) (.cse15 (* main_~b~0 2)) (.cse11 (<= main_~x~0 2)) (.cse12 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 0 main_~c~0) .cse5 (= main_~k~0 1) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (let ((.cse13 (+ main_~c~0 .cse15))) (and (= main_~s~0 0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (< main_~c~0 (div (+ (* (- 1) main_~c~0) 2) 2)) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (< main_~x~0 main_~y~0) (= main_~r~0 1) (= main_~a~0 main_~y~0) (= main_~b~0 main_~x~0) (= .cse13 main_~a~0) (= .cse14 .cse15) (<= .cse13 2))) (and .cse6 (let ((.cse16 (= main_~yy~0 (* main_~y~0 main_~y~0)))) (or (and .cse0 .cse3 (= main_~k~0 0) .cse4 (<= 1 main_~a~0) .cse5 .cse16 .cse7 .cse8 .cse9 .cse10 (= main_~c~0 main_~x~0) .cse12) (let ((.cse17 (* main_~k~0 main_~y~0))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse16 .cse8 .cse9 .cse10 (<= .cse15 main_~a~0) (= main_~x~0 (+ main_~c~0 .cse17)) .cse11 (= (* main_~y~0 2) .cse17) .cse12)))))))) [2022-03-18 02:41:51,586 INFO L878 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse4 (* main_~y~0 2)) (.cse14 (<= 0 main_~b~0)) (.cse17 (<= 1 main_~y~0)) (.cse7 (<= main_~x~0 2)) (.cse1 (= main_~p~0 0)) (.cse2 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse16 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse6 (= main_~q~0 1)) (.cse18 (= main_~xy~0 (* main_~y~0 main_~x~0)))) (let ((.cse0 (< main_~b~0 main_~a~0)) (.cse8 (let ((.cse20 (= main_~a~0 main_~y~0))) (or (let ((.cse19 (* main_~y~0 main_~s~0))) (and .cse1 (= (+ .cse4 .cse19) 0) .cse2 (= (+ main_~x~0 .cse19) main_~b~0) .cse20 .cse16 .cse14 .cse6 .cse17 .cse18 .cse7)) (and (<= 1 main_~c~0) (= main_~s~0 0) .cse1 .cse2 .cse20 (= main_~b~0 main_~x~0) (< main_~x~0 main_~a~0) .cse16 (<= 1 main_~b~0) .cse6 .cse18)))) (.cse5 (<= main_~a~0 2)) (.cse9 (< main_~c~0 (div (+ (* (- 1) main_~c~0) 2) 2))) (.cse10 (= main_~s~0 1)) (.cse3 (<= 0 main_~c~0)) (.cse15 (+ main_~c~0 main_~b~0))) (or (and .cse0 (< (* main_~c~0 2) 2) .cse1 .cse2 .cse3 (< main_~x~0 .cse4) .cse5 (= main_~x~0 (+ main_~b~0 main_~y~0)) .cse6 (= (+ main_~s~0 1) 0) .cse7 (<= main_~y~0 main_~x~0)) (and .cse8 (<= main_~c~0 2) (<= main_~a~0 (div (+ 2 (* (- 1) main_~b~0)) 2))) (and .cse0 (<= 1 main_~x~0) (<= main_~y~0 2) .cse9 .cse10 .cse2 .cse3 .cse5 (exists ((main_~k~0 Int)) (let ((.cse11 (* (- 1) main_~q~0))) (let ((.cse13 (div .cse11 main_~k~0))) (let ((.cse12 (* main_~x~0 .cse13))) (and (= (mod .cse11 main_~k~0) 0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) main_~y~0)) (= (* 2 .cse12) (* main_~k~0 main_~x~0 .cse13)) (= main_~x~0 .cse12)))))) .cse14) (and (= main_~a~0 .cse15) .cse8 .cse5) (and .cse9 .cse10 .cse2 (<= 1 main_~a~0) .cse3 (= main_~b~0 main_~y~0) (<= .cse15 2) .cse16 (= main_~q~0 0) .cse17 .cse18 (= main_~a~0 main_~x~0) .cse7 (= main_~p~0 1))))) [2022-03-18 02:41:51,586 INFO L885 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: true [2022-03-18 02:41:51,587 INFO L878 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse3 (= main_~p~0 0)) (.cse7 (= main_~q~0 1)) (.cse0 (< main_~b~0 main_~a~0)) (.cse1 (<= 1 main_~x~0)) (.cse2 (<= main_~y~0 2)) (.cse5 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse6 (<= 0 main_~b~0)) (.cse8 (<= 1 main_~y~0))) (or (let ((.cse4 (* main_~y~0 main_~s~0))) (and .cse0 .cse1 .cse2 .cse3 (= (+ (* main_~y~0 2) .cse4) 0) .cse5 (= (+ main_~x~0 .cse4) main_~b~0) .cse6 .cse7 .cse8 (<= main_~x~0 2))) (and .cse1 .cse2 .cse3 .cse5 (= main_~y~0 main_~x~0) (= main_~x~0 (+ main_~b~0 main_~y~0)) .cse7 .cse8 (= (+ main_~s~0 1) 0)) (and .cse0 .cse1 .cse2 (< (* main_~b~0 2) 2) (= main_~s~0 1) .cse5 (exists ((main_~k~0 Int)) (let ((.cse10 (div (* (- 1) main_~q~0) main_~k~0))) (let ((.cse9 (* main_~x~0 .cse10))) (and (= (* 2 .cse9) (* main_~k~0 main_~x~0 .cse10)) (= (+ (* main_~q~0 main_~x~0) main_~y~0) 0) (= main_~x~0 .cse9))))) .cse6 .cse8))) [2022-03-18 02:41:51,587 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-18 02:41:51,587 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 02:41:51,587 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-18 02:41:51,587 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-18 02:41:51,587 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 02:41:51,587 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 02:41:51,587 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-18 02:41:51,587 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-03-18 02:41:51,587 INFO L878 garLoopResultBuilder]: At program point L12(lines 12 13) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-18 02:41:51,587 INFO L878 garLoopResultBuilder]: At program point L11(lines 11 14) the Hoare annotation is: (or (forall ((v_main_~x~0_BEFORE_CALL_196 Int) (aux_div_v_main_~s~0_BEFORE_CALL_150_51 Int) (aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57 Int) (aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95 Int) (v_main_~y~0_BEFORE_CALL_190 Int)) (let ((.cse2 (* 2 aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57))) (let ((.cse0 (* 2 v_main_~x~0_BEFORE_CALL_196)) (.cse1 (* 2 (* v_main_~y~0_BEFORE_CALL_190 aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95))) (.cse4 (* aux_div_v_main_~s~0_BEFORE_CALL_150_51 2)) (.cse3 (+ .cse2 (* 2 aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95)))) (or (not (<= v_main_~y~0_BEFORE_CALL_190 (+ .cse0 .cse1))) (not (<= 0 .cse2)) (not (<= v_main_~x~0_BEFORE_CALL_196 2)) (not (< .cse3 (+ 2 .cse4))) (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (<= (+ .cse0 (* 2 (* v_main_~y~0_BEFORE_CALL_190 aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57)) .cse1) v_main_~y~0_BEFORE_CALL_190)) (not (<= .cse4 .cse3)) (not (< 0 (+ v_main_~x~0_BEFORE_CALL_196 (* aux_div_v_main_~s~0_BEFORE_CALL_150_51 v_main_~y~0_BEFORE_CALL_190)))) (not (<= 0 v_main_~x~0_BEFORE_CALL_196)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-18 02:41:51,587 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 10 16) the Hoare annotation is: (or (forall ((v_main_~x~0_BEFORE_CALL_196 Int) (aux_div_v_main_~s~0_BEFORE_CALL_150_51 Int) (aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57 Int) (aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95 Int) (v_main_~y~0_BEFORE_CALL_190 Int)) (let ((.cse2 (* 2 aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57))) (let ((.cse0 (* 2 v_main_~x~0_BEFORE_CALL_196)) (.cse1 (* 2 (* v_main_~y~0_BEFORE_CALL_190 aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95))) (.cse4 (* aux_div_v_main_~s~0_BEFORE_CALL_150_51 2)) (.cse3 (+ .cse2 (* 2 aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95)))) (or (not (<= v_main_~y~0_BEFORE_CALL_190 (+ .cse0 .cse1))) (not (<= 0 .cse2)) (not (<= v_main_~x~0_BEFORE_CALL_196 2)) (not (< .cse3 (+ 2 .cse4))) (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (<= (+ .cse0 (* 2 (* v_main_~y~0_BEFORE_CALL_190 aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57)) .cse1) v_main_~y~0_BEFORE_CALL_190)) (not (<= .cse4 .cse3)) (not (< 0 (+ v_main_~x~0_BEFORE_CALL_196 (* aux_div_v_main_~s~0_BEFORE_CALL_150_51 v_main_~y~0_BEFORE_CALL_190)))) (not (<= 0 v_main_~x~0_BEFORE_CALL_196)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-18 02:41:51,587 INFO L878 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (or (forall ((v_main_~x~0_BEFORE_CALL_196 Int) (aux_div_v_main_~s~0_BEFORE_CALL_150_51 Int) (aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57 Int) (aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95 Int) (v_main_~y~0_BEFORE_CALL_190 Int)) (let ((.cse2 (* 2 aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57))) (let ((.cse0 (* 2 v_main_~x~0_BEFORE_CALL_196)) (.cse1 (* 2 (* v_main_~y~0_BEFORE_CALL_190 aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95))) (.cse4 (* aux_div_v_main_~s~0_BEFORE_CALL_150_51 2)) (.cse3 (+ .cse2 (* 2 aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95)))) (or (not (<= v_main_~y~0_BEFORE_CALL_190 (+ .cse0 .cse1))) (not (<= 0 .cse2)) (not (<= v_main_~x~0_BEFORE_CALL_196 2)) (not (< .cse3 (+ 2 .cse4))) (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (<= (+ .cse0 (* 2 (* v_main_~y~0_BEFORE_CALL_190 aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57)) .cse1) v_main_~y~0_BEFORE_CALL_190)) (not (<= .cse4 .cse3)) (not (< 0 (+ v_main_~x~0_BEFORE_CALL_196 (* aux_div_v_main_~s~0_BEFORE_CALL_150_51 v_main_~y~0_BEFORE_CALL_190)))) (not (<= 0 v_main_~x~0_BEFORE_CALL_196)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-18 02:41:51,588 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-18 02:41:51,590 INFO L718 BasicCegarLoop]: Path program histogram: [14, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-03-18 02:41:51,591 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 02:41:51,606 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,607 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,607 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,607 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,607 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,610 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,610 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,610 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,610 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,610 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,613 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,613 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] [2022-03-18 02:41:51,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] [2022-03-18 02:41:51,615 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,616 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 02:41:51 BoogieIcfgContainer [2022-03-18 02:41:51,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 02:41:51,617 INFO L158 Benchmark]: Toolchain (without parser) took 126079.32ms. Allocated memory was 170.9MB in the beginning and 317.7MB in the end (delta: 146.8MB). Free memory was 123.4MB in the beginning and 220.2MB in the end (delta: -96.8MB). Peak memory consumption was 168.5MB. Max. memory is 8.0GB. [2022-03-18 02:41:51,617 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 170.9MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 02:41:51,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.76ms. Allocated memory is still 170.9MB. Free memory was 123.1MB in the beginning and 148.6MB in the end (delta: -25.5MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-03-18 02:41:51,618 INFO L158 Benchmark]: Boogie Preprocessor took 41.74ms. Allocated memory is still 170.9MB. Free memory was 148.6MB in the beginning and 147.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 02:41:51,618 INFO L158 Benchmark]: RCFGBuilder took 259.22ms. Allocated memory is still 170.9MB. Free memory was 147.1MB in the beginning and 135.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 02:41:51,618 INFO L158 Benchmark]: TraceAbstraction took 125461.84ms. Allocated memory was 170.9MB in the beginning and 317.7MB in the end (delta: 146.8MB). Free memory was 135.3MB in the beginning and 220.2MB in the end (delta: -84.9MB). Peak memory consumption was 180.6MB. Max. memory is 8.0GB. [2022-03-18 02:41:51,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 170.9MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 310.76ms. Allocated memory is still 170.9MB. Free memory was 123.1MB in the beginning and 148.6MB in the end (delta: -25.5MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.74ms. Allocated memory is still 170.9MB. Free memory was 148.6MB in the beginning and 147.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 259.22ms. Allocated memory is still 170.9MB. Free memory was 147.1MB in the beginning and 135.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 125461.84ms. Allocated memory was 170.9MB in the beginning and 317.7MB in the end (delta: 146.8MB). Free memory was 135.3MB in the beginning and 220.2MB in the end (delta: -84.9MB). Peak memory consumption was 180.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] * 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: 13]: 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, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 125.4s, OverallIterations: 24, TraceHistogramMax: 29, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 21.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 693 SdHoareTripleChecker+Valid, 15.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 564 mSDsluCounter, 7053 SdHoareTripleChecker+Invalid, 14.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 121 IncrementalHoareTripleChecker+Unchecked, 5873 mSDsCounter, 696 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5294 IncrementalHoareTripleChecker+Invalid, 6115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 696 mSolverCounterUnsat, 1180 mSDtfsCounter, 5294 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4183 GetRequests, 3756 SyntacticMatches, 23 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 58.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=18, InterpolantAutomatonStates: 252, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 24 MinimizatonAttempts, 130 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 1196 PreInvPairs, 1459 NumberOfFragments, 3884 HoareAnnotationTreeSize, 1196 FomulaSimplifications, 1542 FormulaSimplificationTreeSizeReduction, 8.4s HoareSimplificationTime, 40 FomulaSimplificationsInter, 180772 FormulaSimplificationTreeSizeReductionInter, 13.0s 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: 47]: Loop Invariant Derived loop invariant: (((((((((((((((((r == 0 && a == c + b * k) && y <= 2) && s == 1) && 1 <= a) && b == y) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && c == x) && x <= 2) && p == 1) || (((((((((((((a == c + b * k && s == 0) && y <= 2) && p == 0) && a == y * r + p * x) && a == y) && b < c) && b == x) && c <= 2) && x < a) && yy == y * y) && 1 <= b) && q == 1) && xy == y * x)) || (((((((((((((0 < c && a == c + b * k) && b == q * x + y * s) && y <= 2) && p == 0) && a == y * r + p * x) && a == y) && b == x) && x < a) && c + b <= 2) && yy == y * y) && 1 <= b) && q == 1) && xy == y * x)) || (((((((((((((r == 0 && a == c + b * k) && y <= 2) && s == 1) && b == y) && b * k == b * 2) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && b * 2 <= a) && x <= 2) && p == 1)) || ((((((((((((a == c + b * k && b == q * x + y * s) && y <= 2) && a == y * r + p * x) && r == 1) && a == y) && b == x) && c + b * 2 == a) && x < a) && yy == y * y) && 1 <= b) && q == 1) && xy == y * x)) || (((((((((((((r == 0 && a == c + b * k) && y <= 2) && s == 1) && 0 <= c) && b == y) && k == 1) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && x <= 2) && p == 1) - InvariantResult [Line: 39]: Loop Invariant [2022-03-18 02:41:51,630 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,630 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,630 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,630 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,630 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,632 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,632 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,632 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,632 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2022-03-18 02:41:51,632 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] Derived loop invariant: ((((((((((((((b < a && c * 2 < 2) && p == 0) && a == y * r + p * x) && 0 <= c) && x < y * 2) && a <= 2) && x == b + y) && q == 1) && s + 1 == 0) && x <= 2) && y <= x) || (((((((((((((p == 0 && y * 2 + y * s == 0) && a == y * r + p * x) && x + y * s == b) && a == y) && yy == y * y) && 0 <= b) && q == 1) && 1 <= y) && xy == y * x) && x <= 2) || ((((((((((1 <= c && s == 0) && p == 0) && a == y * r + p * x) && a == y) && b == x) && x < a) && yy == y * y) && 1 <= b) && q == 1) && xy == y * x)) && c <= 2) && a <= (2 + -1 * b) / 2)) || (((((((((b < a && 1 <= x) && y <= 2) && c < (-1 * c + 2) / 2) && s == 1) && a == y * r + p * x) && 0 <= c) && a <= 2) && (\exists main_~k~0 : int :: ((-1 * q % main_~k~0 == 0 && b == q * x + y) && 2 * (x * (-1 * q / main_~k~0)) == main_~k~0 * x * (-1 * q / main_~k~0)) && x == x * (-1 * q / main_~k~0))) && 0 <= b)) || ((a == c + b && (((((((((((p == 0 && y * 2 + y * s == 0) && a == y * r + p * x) && x + y * s == b) && a == y) && yy == y * y) && 0 <= b) && q == 1) && 1 <= y) && xy == y * x) && x <= 2) || ((((((((((1 <= c && s == 0) && p == 0) && a == y * r + p * x) && a == y) && b == x) && x < a) && yy == y * y) && 1 <= b) && q == 1) && xy == y * x))) && a <= 2)) || (((((((((((((c < (-1 * c + 2) / 2 && s == 1) && a == y * r + p * x) && 1 <= a) && 0 <= c) && b == y) && c + b <= 2) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && x <= 2) && p == 1) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert [2022-03-18 02:41:51,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,635 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] [2022-03-18 02:41:51,636 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,636 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,636 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,636 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] [2022-03-18 02:41:51,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57,QUANTIFIED] [2022-03-18 02:41:51,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95,QUANTIFIED] [2022-03-18 02:41:51,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] [2022-03-18 02:41:51,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~s~0_BEFORE_CALL_150_51,QUANTIFIED] [2022-03-18 02:41:51,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_BEFORE_CALL_190,QUANTIFIED] [2022-03-18 02:41:51,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_BEFORE_CALL_196,QUANTIFIED] Derived contract for procedure __VERIFIER_assert: (forall v_main_~x~0_BEFORE_CALL_196 : int, aux_div_v_main_~s~0_BEFORE_CALL_150_51 : int, aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57 : int, aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95 : int, v_main_~y~0_BEFORE_CALL_190 : int :: (((((((!(v_main_~y~0_BEFORE_CALL_190 <= 2 * v_main_~x~0_BEFORE_CALL_196 + 2 * (v_main_~y~0_BEFORE_CALL_190 * aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95)) || !(0 <= 2 * aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57)) || !(v_main_~x~0_BEFORE_CALL_196 <= 2)) || !(2 * aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57 + 2 * aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95 < 2 + aux_div_v_main_~s~0_BEFORE_CALL_150_51 * 2)) || !(1 <= \old(cond))) || !(2 * v_main_~x~0_BEFORE_CALL_196 + 2 * (v_main_~y~0_BEFORE_CALL_190 * aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57) + 2 * (v_main_~y~0_BEFORE_CALL_190 * aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95) <= v_main_~y~0_BEFORE_CALL_190)) || !(aux_div_v_main_~s~0_BEFORE_CALL_150_51 * 2 <= 2 * aux_div_aux_mod_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95_57 + 2 * aux_div_aux_mod_v_main_~s~0_BEFORE_CALL_150_51_95)) || !(0 < v_main_~x~0_BEFORE_CALL_196 + aux_div_v_main_~s~0_BEFORE_CALL_150_51 * v_main_~y~0_BEFORE_CALL_190)) || !(0 <= v_main_~x~0_BEFORE_CALL_196)) || \old(cond) == cond RESULT: Ultimate proved your program to be correct! [2022-03-18 02:41:51,700 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...