/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/loop-crafted/simple_array_index_value_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 00:16:39,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 00:16:39,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 00:16:39,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 00:16:39,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 00:16:39,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 00:16:39,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 00:16:39,499 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 00:16:39,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 00:16:39,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 00:16:39,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 00:16:39,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 00:16:39,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 00:16:39,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 00:16:39,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 00:16:39,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 00:16:39,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 00:16:39,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 00:16:39,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 00:16:39,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 00:16:39,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 00:16:39,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 00:16:39,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 00:16:39,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:16:39,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 00:16:39,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 00:16:39,511 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 00:16:39,511 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 00:16:39,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 00:16:39,511 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 00:16:39,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 00:16:39,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 00:16:39,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 00:16:39,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 00:16:39,734 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 00:16:39,737 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 00:16:39,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-1.i [2022-03-18 00:16:39,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ec0b77c/c1f0d541195945309255d61d5c075633/FLAG98dfff2b0 [2022-03-18 00:16:40,148 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 00:16:40,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-1.i [2022-03-18 00:16:40,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ec0b77c/c1f0d541195945309255d61d5c075633/FLAG98dfff2b0 [2022-03-18 00:16:40,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ec0b77c/c1f0d541195945309255d61d5c075633 [2022-03-18 00:16:40,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 00:16:40,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 00:16:40,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 00:16:40,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 00:16:40,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 00:16:40,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15abd1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40, skipping insertion in model container [2022-03-18 00:16:40,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 00:16:40,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 00:16:40,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-1.i[834,847] [2022-03-18 00:16:40,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:16:40,306 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 00:16:40,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-1.i[834,847] [2022-03-18 00:16:40,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:16:40,325 INFO L208 MainTranslator]: Completed translation [2022-03-18 00:16:40,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40 WrapperNode [2022-03-18 00:16:40,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 00:16:40,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 00:16:40,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 00:16:40,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 00:16:40,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 00:16:40,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 00:16:40,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 00:16:40,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 00:16:40,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40" (1/1) ... [2022-03-18 00:16:40,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:16:40,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:16:40,389 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 00:16:40,392 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 00:16:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 00:16:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 00:16:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 00:16:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 00:16:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 00:16:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 00:16:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 00:16:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 00:16:40,467 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 00:16:40,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 00:16:40,570 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 00:16:40,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 00:16:40,574 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 00:16:40,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:16:40 BoogieIcfgContainer [2022-03-18 00:16:40,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 00:16:40,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 00:16:40,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 00:16:40,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 00:16:40,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:16:40" (1/3) ... [2022-03-18 00:16:40,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cd89a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:16:40, skipping insertion in model container [2022-03-18 00:16:40,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:40" (2/3) ... [2022-03-18 00:16:40,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cd89a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:16:40, skipping insertion in model container [2022-03-18 00:16:40,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:16:40" (3/3) ... [2022-03-18 00:16:40,586 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-1.i [2022-03-18 00:16:40,589 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 00:16:40,594 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 00:16:40,634 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 00:16:40,639 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 00:16:40,639 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 00:16:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 00:16:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-18 00:16:40,659 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:16:40,660 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:16:40,664 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:16:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:16:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash 56847072, now seen corresponding path program 1 times [2022-03-18 00:16:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:40,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [982847935] [2022-03-18 00:16:40,683 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:16:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 56847072, now seen corresponding path program 2 times [2022-03-18 00:16:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:16:40,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580291265] [2022-03-18 00:16:40,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:16:40,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:16:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:16:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:40,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:16:40,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580291265] [2022-03-18 00:16:40,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580291265] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:40,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:40,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 00:16:40,797 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:16:40,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [982847935] [2022-03-18 00:16:40,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [982847935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:40,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:40,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 00:16:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463355104] [2022-03-18 00:16:40,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:16:40,801 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 00:16:40,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:40,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 00:16:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 00:16:40,836 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:40,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:16:40,874 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2022-03-18 00:16:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 00:16:40,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-18 00:16:40,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:16:40,882 INFO L225 Difference]: With dead ends: 46 [2022-03-18 00:16:40,883 INFO L226 Difference]: Without dead ends: 22 [2022-03-18 00:16:40,886 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 00:16:40,888 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 00:16:40,889 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 00:16:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-18 00:16:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-18 00:16:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 00:16:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-03-18 00:16:40,916 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2022-03-18 00:16:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:16:40,917 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-03-18 00:16:40,917 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-03-18 00:16:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-18 00:16:40,917 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:16:40,918 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:16:40,918 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 00:16:40,918 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:16:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:16:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1810080346, now seen corresponding path program 1 times [2022-03-18 00:16:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:40,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [288971750] [2022-03-18 00:16:40,920 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:16:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1810080346, now seen corresponding path program 2 times [2022-03-18 00:16:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:16:40,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557982740] [2022-03-18 00:16:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:16:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:16:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:40,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:16:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:40,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:16:40,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557982740] [2022-03-18 00:16:40,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557982740] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:40,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:40,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 00:16:40,982 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:16:40,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [288971750] [2022-03-18 00:16:40,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [288971750] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:40,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:40,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 00:16:40,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454756947] [2022-03-18 00:16:40,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:16:40,983 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 00:16:40,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:40,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 00:16:40,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 00:16:40,984 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:16:41,054 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2022-03-18 00:16:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 00:16:41,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-18 00:16:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:16:41,057 INFO L225 Difference]: With dead ends: 43 [2022-03-18 00:16:41,057 INFO L226 Difference]: Without dead ends: 29 [2022-03-18 00:16:41,057 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 00:16:41,058 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:16:41,058 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 25 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:16:41,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-03-18 00:16:41,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2022-03-18 00:16:41,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 00:16:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-03-18 00:16:41,065 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2022-03-18 00:16:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:16:41,066 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-03-18 00:16:41,066 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-03-18 00:16:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-18 00:16:41,066 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:16:41,066 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:16:41,066 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 00:16:41,067 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:16:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:16:41,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1733475192, now seen corresponding path program 1 times [2022-03-18 00:16:41,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:41,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1592302824] [2022-03-18 00:16:41,081 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 00:16:41,082 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 00:16:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1733475192, now seen corresponding path program 2 times [2022-03-18 00:16:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:16:41,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272954040] [2022-03-18 00:16:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:16:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:16:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:41,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:16:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:16:41,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272954040] [2022-03-18 00:16:41,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272954040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 00:16:41,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350926559] [2022-03-18 00:16:41,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 00:16:41,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:16:41,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:16:41,150 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 00:16:41,151 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 00:16:41,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 00:16:41,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 00:16:41,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 00:16:41,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 00:16:41,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-18 00:16:41,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-18 00:16:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:41,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 00:16:41,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-03-18 00:16:41,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-03-18 00:16:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:41,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350926559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 00:16:41,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 00:16:41,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 14 [2022-03-18 00:16:41,538 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:16:41,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1592302824] [2022-03-18 00:16:41,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1592302824] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:41,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:41,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 00:16:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654748595] [2022-03-18 00:16:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:16:41,539 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 00:16:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 00:16:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-18 00:16:41,540 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:16:41,616 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2022-03-18 00:16:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 00:16:41,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-03-18 00:16:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:16:41,617 INFO L225 Difference]: With dead ends: 52 [2022-03-18 00:16:41,617 INFO L226 Difference]: Without dead ends: 36 [2022-03-18 00:16:41,617 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-18 00:16:41,618 INFO L912 BasicCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 00:16:41,618 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 29 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 00:16:41,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-18 00:16:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2022-03-18 00:16:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 00:16:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-03-18 00:16:41,624 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2022-03-18 00:16:41,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:16:41,624 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-03-18 00:16:41,624 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-03-18 00:16:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 00:16:41,627 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:16:41,627 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:16:41,648 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 00:16:41,839 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:16:41,840 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:16:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:16:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1130366230, now seen corresponding path program 3 times [2022-03-18 00:16:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:41,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1509496865] [2022-03-18 00:16:41,842 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 00:16:41,842 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 00:16:41,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1130366230, now seen corresponding path program 4 times [2022-03-18 00:16:41,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:16:41,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72353248] [2022-03-18 00:16:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:16:41,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:16:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:16:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:41,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:16:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72353248] [2022-03-18 00:16:41,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72353248] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 00:16:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511529893] [2022-03-18 00:16:41,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 00:16:41,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:16:41,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:16:41,936 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 00:16:41,937 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 00:16:41,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 00:16:41,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 00:16:41,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 00:16:41,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 00:16:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:42,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 00:16:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:42,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511529893] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 00:16:42,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 00:16:42,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-03-18 00:16:42,104 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:16:42,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1509496865] [2022-03-18 00:16:42,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1509496865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:42,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:42,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:16:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624249728] [2022-03-18 00:16:42,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:16:42,114 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 00:16:42,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 00:16:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-03-18 00:16:42,114 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:16:42,280 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2022-03-18 00:16:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 00:16:42,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-03-18 00:16:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:16:42,281 INFO L225 Difference]: With dead ends: 59 [2022-03-18 00:16:42,281 INFO L226 Difference]: Without dead ends: 43 [2022-03-18 00:16:42,282 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-18 00:16:42,282 INFO L912 BasicCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:16:42,283 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 29 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:16:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-03-18 00:16:42,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2022-03-18 00:16:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 00:16:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-03-18 00:16:42,290 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 18 [2022-03-18 00:16:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:16:42,290 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-03-18 00:16:42,291 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-03-18 00:16:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 00:16:42,291 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:16:42,291 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:16:42,311 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 00:16:42,503 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-18 00:16:42,504 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:16:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:16:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1363238708, now seen corresponding path program 5 times [2022-03-18 00:16:42,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:42,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1624091441] [2022-03-18 00:16:42,506 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 00:16:42,506 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 00:16:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1363238708, now seen corresponding path program 6 times [2022-03-18 00:16:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:16:42,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859099541] [2022-03-18 00:16:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:16:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:16:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:16:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:42,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:16:42,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859099541] [2022-03-18 00:16:42,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859099541] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 00:16:42,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47615965] [2022-03-18 00:16:42,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 00:16:42,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:16:42,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:16:42,633 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 00:16:42,635 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 00:16:42,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-18 00:16:42,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 00:16:42,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-18 00:16:42,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 00:16:42,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-03-18 00:16:42,768 INFO L356 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2022-03-18 00:16:42,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2022-03-18 00:16:42,803 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-03-18 00:16:42,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-03-18 00:16:42,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-18 00:16:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:42,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 00:16:43,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2022-03-18 00:16:43,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 218 [2022-03-18 00:16:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:43,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47615965] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 00:16:43,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 00:16:43,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 12] total 22 [2022-03-18 00:16:43,220 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:16:43,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1624091441] [2022-03-18 00:16:43,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1624091441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:43,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:43,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 00:16:43,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98141610] [2022-03-18 00:16:43,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:16:43,221 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 00:16:43,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:43,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 00:16:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-03-18 00:16:43,222 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:16:43,368 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2022-03-18 00:16:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 00:16:43,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-03-18 00:16:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:16:43,370 INFO L225 Difference]: With dead ends: 73 [2022-03-18 00:16:43,370 INFO L226 Difference]: Without dead ends: 52 [2022-03-18 00:16:43,371 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-03-18 00:16:43,373 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 52 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:16:43,373 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 41 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:16:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-18 00:16:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2022-03-18 00:16:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 00:16:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-03-18 00:16:43,390 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 20 [2022-03-18 00:16:43,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:16:43,391 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-03-18 00:16:43,391 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-03-18 00:16:43,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-18 00:16:43,391 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:16:43,392 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:16:43,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 00:16:43,599 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:16:43,600 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:16:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:16:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1815390674, now seen corresponding path program 7 times [2022-03-18 00:16:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:43,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [836616794] [2022-03-18 00:16:43,601 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 00:16:43,601 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 00:16:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1815390674, now seen corresponding path program 8 times [2022-03-18 00:16:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:16:43,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089551843] [2022-03-18 00:16:43,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:16:43,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:16:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:16:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:43,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:16:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089551843] [2022-03-18 00:16:43,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089551843] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 00:16:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371482778] [2022-03-18 00:16:43,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 00:16:43,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:16:43,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:16:43,684 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 00:16:43,686 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 00:16:43,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 00:16:43,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 00:16:43,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-18 00:16:43,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 00:16:43,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-03-18 00:16:43,790 INFO L356 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2022-03-18 00:16:43,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2022-03-18 00:16:43,815 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-03-18 00:16:43,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-03-18 00:16:43,839 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-03-18 00:16:43,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-03-18 00:16:43,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-18 00:16:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:43,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 00:16:44,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2022-03-18 00:16:44,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3830 treesize of output 3814 [2022-03-18 00:16:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:49,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371482778] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 00:16:49,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 00:16:49,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 15] total 27 [2022-03-18 00:16:49,696 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:16:49,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [836616794] [2022-03-18 00:16:49,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [836616794] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:49,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:49,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 00:16:49,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744101701] [2022-03-18 00:16:49,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:16:49,696 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 00:16:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:49,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 00:16:49,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2022-03-18 00:16:49,697 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:16:49,884 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2022-03-18 00:16:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 00:16:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-03-18 00:16:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:16:49,885 INFO L225 Difference]: With dead ends: 85 [2022-03-18 00:16:49,885 INFO L226 Difference]: Without dead ends: 59 [2022-03-18 00:16:49,886 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2022-03-18 00:16:49,886 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 63 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:16:49,887 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 43 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:16:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-18 00:16:49,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2022-03-18 00:16:49,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 00:16:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2022-03-18 00:16:49,893 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 22 [2022-03-18 00:16:49,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:16:49,893 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2022-03-18 00:16:49,893 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:16:49,893 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2022-03-18 00:16:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-18 00:16:49,894 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:16:49,894 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:16:49,911 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 00:16:50,100 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:16:50,100 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:16:50,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:16:50,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1753234192, now seen corresponding path program 9 times [2022-03-18 00:16:50,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:50,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [822295634] [2022-03-18 00:16:50,102 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 00:16:50,102 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 00:16:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1753234192, now seen corresponding path program 10 times [2022-03-18 00:16:50,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:16:50,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045855445] [2022-03-18 00:16:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:16:50,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:16:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:16:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:50,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:16:50,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045855445] [2022-03-18 00:16:50,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045855445] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 00:16:50,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042715853] [2022-03-18 00:16:50,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 00:16:50,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:16:50,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:16:50,204 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 00:16:50,205 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 00:16:50,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 00:16:50,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 00:16:50,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-18 00:16:50,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 00:16:50,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-03-18 00:16:50,322 INFO L356 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2022-03-18 00:16:50,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2022-03-18 00:16:50,345 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-03-18 00:16:50,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-03-18 00:16:50,367 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-03-18 00:16:50,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-03-18 00:16:50,392 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-03-18 00:16:50,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-03-18 00:16:50,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-18 00:16:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:50,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 00:16:51,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 62 [2022-03-18 00:16:51,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15622 treesize of output 15590 [2022-03-18 00:17:33,701 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-03-18 00:17:33,708 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 00:17:33,906 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:17:33,907 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:496) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.runStrategy(AcceleratedInterpolationCore.java:300) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:275) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-03-18 00:17:33,910 INFO L158 Benchmark]: Toolchain (without parser) took 53748.09ms. Allocated memory was 202.4MB in the beginning and 692.1MB in the end (delta: 489.7MB). Free memory was 152.6MB in the beginning and 560.5MB in the end (delta: -407.9MB). Peak memory consumption was 392.7MB. Max. memory is 8.0GB. [2022-03-18 00:17:33,911 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 202.4MB. Free memory is still 168.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:17:33,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.32ms. Allocated memory is still 202.4MB. Free memory was 152.5MB in the beginning and 178.4MB in the end (delta: -25.9MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. [2022-03-18 00:17:33,911 INFO L158 Benchmark]: Boogie Preprocessor took 32.23ms. Allocated memory is still 202.4MB. Free memory was 178.4MB in the beginning and 176.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 00:17:33,911 INFO L158 Benchmark]: RCFGBuilder took 217.16ms. Allocated memory is still 202.4MB. Free memory was 176.8MB in the beginning and 165.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 00:17:33,912 INFO L158 Benchmark]: TraceAbstraction took 53333.45ms. Allocated memory was 202.4MB in the beginning and 692.1MB in the end (delta: 489.7MB). Free memory was 165.3MB in the beginning and 560.5MB in the end (delta: -395.3MB). Peak memory consumption was 405.0MB. Max. memory is 8.0GB. [2022-03-18 00:17:33,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 202.4MB. Free memory is still 168.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 160.32ms. Allocated memory is still 202.4MB. Free memory was 152.5MB in the beginning and 178.4MB in the end (delta: -25.9MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.23ms. Allocated memory is still 202.4MB. Free memory was 178.4MB in the beginning and 176.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 217.16ms. Allocated memory is still 202.4MB. Free memory was 176.8MB in the beginning and 165.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 53333.45ms. Allocated memory was 202.4MB in the beginning and 692.1MB in the end (delta: 489.7MB). Free memory was 165.3MB in the beginning and 560.5MB in the end (delta: -395.3MB). Peak memory consumption was 405.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-18 00:17:33,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...