/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 11:38:18,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 11:38:18,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 11:38:18,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 11:38:18,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 11:38:18,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 11:38:18,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 11:38:18,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 11:38:18,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 11:38:18,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 11:38:18,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 11:38:18,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 11:38:18,711 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 11:38:18,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 11:38:18,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 11:38:18,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 11:38:18,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 11:38:18,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 11:38:18,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 11:38:18,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 11:38:18,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 11:38:18,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-19 11:38:18,729 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 11:38:18,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 11:38:18,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 11:38:18,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 11:38:18,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 11:38:18,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 11:38:18,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 11:38:18,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 11:38:18,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 11:38:18,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 11:38:18,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 11:38:18,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 11:38:18,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 11:38:18,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 11:38:18,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 11:38:18,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 11:38:18,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 11:38:18,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 11:38:18,731 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 11:38:18,732 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 11:38:18,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 11:38:18,732 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 11:38:18,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 11:38:18,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 11:38:18,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 11:38:18,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 11:38:18,896 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 11:38:18,898 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 11:38:18,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c [2022-03-19 11:38:18,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ecfaa319/73a1d27b4885415dbfe21f7672eb677d/FLAG92a3b47b7 [2022-03-19 11:38:19,265 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 11:38:19,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c [2022-03-19 11:38:19,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ecfaa319/73a1d27b4885415dbfe21f7672eb677d/FLAG92a3b47b7 [2022-03-19 11:38:19,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ecfaa319/73a1d27b4885415dbfe21f7672eb677d [2022-03-19 11:38:19,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 11:38:19,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 11:38:19,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 11:38:19,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 11:38:19,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 11:38:19,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67900e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19, skipping insertion in model container [2022-03-19 11:38:19,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 11:38:19,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 11:38:19,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c[552,565] [2022-03-19 11:38:19,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 11:38:19,829 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 11:38:19,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c[552,565] [2022-03-19 11:38:19,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 11:38:19,850 INFO L208 MainTranslator]: Completed translation [2022-03-19 11:38:19,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19 WrapperNode [2022-03-19 11:38:19,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 11:38:19,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 11:38:19,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 11:38:19,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 11:38:19,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 11:38:19,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 11:38:19,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 11:38:19,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 11:38:19,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19" (1/1) ... [2022-03-19 11:38:19,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 11:38:19,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 11:38:19,891 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) [2022-03-19 11:38:19,892 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 [2022-03-19 11:38:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 11:38:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 11:38:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 11:38:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-19 11:38:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 11:38:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 11:38:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 11:38:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 11:38:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 11:38:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 11:38:19,961 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 11:38:19,963 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 11:38:20,110 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 11:38:20,115 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 11:38:20,115 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-19 11:38:20,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 11:38:20 BoogieIcfgContainer [2022-03-19 11:38:20,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 11:38:20,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 11:38:20,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 11:38:20,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 11:38:20,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 11:38:19" (1/3) ... [2022-03-19 11:38:20,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f900df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 11:38:20, skipping insertion in model container [2022-03-19 11:38:20,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:38:19" (2/3) ... [2022-03-19 11:38:20,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f900df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 11:38:20, skipping insertion in model container [2022-03-19 11:38:20,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 11:38:20" (3/3) ... [2022-03-19 11:38:20,154 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound20.c [2022-03-19 11:38:20,157 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 11:38:20,157 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 11:38:20,207 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 11:38:20,212 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 [2022-03-19 11:38:20,212 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 11:38:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-19 11:38:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-19 11:38:20,228 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 11:38:20,228 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 11:38:20,229 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 11:38:20,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 11:38:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1520729432, now seen corresponding path program 1 times [2022-03-19 11:38:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 11:38:20,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1612090711] [2022-03-19 11:38:20,245 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 11:38:20,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1520729432, now seen corresponding path program 2 times [2022-03-19 11:38:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 11:38:20,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074118041] [2022-03-19 11:38:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 11:38:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 11:38:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 11:38:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 11:38:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 11:38:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 11:38:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 11:38:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 11:38:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 11:38:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 11:38:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 11:38:20,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 11:38:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 11:38:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 11:38:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 11:38:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 11:38:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 11:38:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-19 11:38:20,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 11:38:20,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074118041] [2022-03-19 11:38:20,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074118041] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 11:38:20,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 11:38:20,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 11:38:20,470 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 11:38:20,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1612090711] [2022-03-19 11:38:20,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1612090711] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 11:38:20,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 11:38:20,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 11:38:20,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671206854] [2022-03-19 11:38:20,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 11:38:20,475 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 11:38:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 11:38:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 11:38:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 11:38:20,495 INFO L87 Difference]: Start difference. First operand has 40 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 11:38:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 11:38:20,600 INFO L93 Difference]: Finished difference Result 73 states and 121 transitions. [2022-03-19 11:38:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 11:38:20,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-03-19 11:38:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 11:38:20,608 INFO L225 Difference]: With dead ends: 73 [2022-03-19 11:38:20,609 INFO L226 Difference]: Without dead ends: 35 [2022-03-19 11:38:20,612 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 11:38:20,620 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 11:38:20,622 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 11:38:20,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-19 11:38:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-19 11:38:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-19 11:38:20,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-03-19 11:38:20,671 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-03-19 11:38:20,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 11:38:20,676 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-03-19 11:38:20,676 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 11:38:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-03-19 11:38:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-19 11:38:20,678 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 11:38:20,679 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 11:38:20,680 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 11:38:20,680 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 11:38:20,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 11:38:20,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1122529479, now seen corresponding path program 1 times [2022-03-19 11:38:20,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 11:38:20,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [361659356] [2022-03-19 11:38:20,683 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 11:38:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1122529479, now seen corresponding path program 2 times [2022-03-19 11:38:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 11:38:20,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683113959] [2022-03-19 11:38:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 11:38:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 11:38:20,721 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 11:38:20,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663476888] [2022-03-19 11:38:20,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 11:38:20,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 11:38:20,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 11:38:20,730 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) [2022-03-19 11:38:20,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 11:38:20,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 11:38:20,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 11:38:20,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-19 11:38:20,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 11:38:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-19 11:38:20,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 11:38:20,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 11:38:20,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683113959] [2022-03-19 11:38:20,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 11:38:20,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663476888] [2022-03-19 11:38:20,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663476888] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 11:38:20,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 11:38:20,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 11:38:20,926 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 11:38:20,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [361659356] [2022-03-19 11:38:20,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [361659356] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 11:38:20,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 11:38:20,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 11:38:20,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311457953] [2022-03-19 11:38:20,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 11:38:20,927 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 11:38:20,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 11:38:20,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 11:38:20,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 11:38:20,928 INFO L87 Difference]: Start difference. First operand 35 states and 46 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 11:38:20,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 11:38:20,987 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-03-19 11:38:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 11:38:20,987 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 43 [2022-03-19 11:38:20,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 11:38:20,988 INFO L225 Difference]: With dead ends: 52 [2022-03-19 11:38:20,988 INFO L226 Difference]: Without dead ends: 50 [2022-03-19 11:38:20,988 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 11:38:20,989 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 11:38:20,990 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 147 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 11:38:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-19 11:38:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-03-19 11:38:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-19 11:38:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2022-03-19 11:38:21,000 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 43 [2022-03-19 11:38:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 11:38:21,000 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2022-03-19 11:38:21,000 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 11:38:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2022-03-19 11:38:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-19 11:38:21,002 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 11:38:21,002 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 11:38:21,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 11:38:21,205 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 11:38:21,206 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 11:38:21,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 11:38:21,206 INFO L85 PathProgramCache]: Analyzing trace with hash 314996066, now seen corresponding path program 1 times [2022-03-19 11:38:21,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 11:38:21,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1827224352] [2022-03-19 11:38:21,207 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 11:38:21,207 INFO L85 PathProgramCache]: Analyzing trace with hash 314996066, now seen corresponding path program 2 times [2022-03-19 11:38:21,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 11:38:21,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260284045] [2022-03-19 11:38:21,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 11:38:21,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 11:38:21,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 11:38:21,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839799573] [2022-03-19 11:38:21,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 11:38:21,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 11:38:21,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 11:38:21,221 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) [2022-03-19 11:38:21,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process