/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 00:56:30,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 00:56:30,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 00:56:30,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 00:56:30,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 00:56:30,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 00:56:30,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 00:56:30,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 00:56:30,351 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 00:56:30,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 00:56:30,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 00:56:30,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 00:56:30,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 00:56:30,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 00:56:30,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 00:56:30,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 00:56:30,353 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 00:56:30,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 00:56:30,353 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 00:56:30,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 00:56:30,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 00:56:30,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 00:56:30,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 00:56:30,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 00:56:30,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 00:56:30,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 00:56:30,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 00:56:30,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 00:56:30,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 00:56:30,355 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 00:56:30,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 00:56:30,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 00:56:30,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 00:56:30,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 00:56:30,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 00:56:30,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 00:56:30,573 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 00:56:30,573 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 00:56:30,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn5f.c [2022-01-31 00:56:30,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a312ec29e/4e21c03d35ca431b888e3b52ba800790/FLAG5c54eb0b4 [2022-01-31 00:56:30,944 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 00:56:30,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn5f.c [2022-01-31 00:56:30,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a312ec29e/4e21c03d35ca431b888e3b52ba800790/FLAG5c54eb0b4 [2022-01-31 00:56:31,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a312ec29e/4e21c03d35ca431b888e3b52ba800790 [2022-01-31 00:56:31,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 00:56:31,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 00:56:31,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 00:56:31,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 00:56:31,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 00:56:31,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521cc6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31, skipping insertion in model container [2022-01-31 00:56:31,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 00:56:31,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 00:56:31,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn5f.c[588,601] [2022-01-31 00:56:31,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 00:56:31,602 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 00:56:31,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn5f.c[588,601] [2022-01-31 00:56:31,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 00:56:31,646 INFO L208 MainTranslator]: Completed translation [2022-01-31 00:56:31,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31 WrapperNode [2022-01-31 00:56:31,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 00:56:31,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 00:56:31,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 00:56:31,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 00:56:31,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 00:56:31,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 00:56:31,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 00:56:31,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 00:56:31,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31" (1/1) ... [2022-01-31 00:56:31,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 00:56:31,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:56:31,729 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) [2022-01-31 00:56:31,747 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 [2022-01-31 00:56:31,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 00:56:31,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 00:56:31,759 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 00:56:31,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 00:56:31,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 00:56:31,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 00:56:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 00:56:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 00:56:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 00:56:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 00:56:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 00:56:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 00:56:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 00:56:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 00:56:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 00:56:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 00:56:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 00:56:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 00:56:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 00:56:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 00:56:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 00:56:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 00:56:31,827 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 00:56:31,828 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 00:56:31,961 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 00:56:31,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 00:56:31,965 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 00:56:31,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:56:31 BoogieIcfgContainer [2022-01-31 00:56:31,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 00:56:31,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 00:56:31,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 00:56:31,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 00:56:31,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 12:56:31" (1/3) ... [2022-01-31 00:56:31,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6457f32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:56:31, skipping insertion in model container [2022-01-31 00:56:31,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:56:31" (2/3) ... [2022-01-31 00:56:31,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6457f32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:56:31, skipping insertion in model container [2022-01-31 00:56:31,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:56:31" (3/3) ... [2022-01-31 00:56:31,973 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn5f.c [2022-01-31 00:56:31,978 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 00:56:31,978 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 00:56:32,010 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 00:56:32,015 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 00:56:32,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 00:56:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 00:56:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 00:56:32,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:56:32,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:56:32,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:56:32,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:56:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash 199879945, now seen corresponding path program 1 times [2022-01-31 00:56:32,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:56:32,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552895000] [2022-01-31 00:56:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:32,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:56:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:56:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 00:56:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:56:32,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 00:56:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:56:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:32,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:56:32,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552895000] [2022-01-31 00:56:32,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552895000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 00:56:32,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 00:56:32,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 00:56:32,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104467080] [2022-01-31 00:56:32,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 00:56:32,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 00:56:32,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:56:32,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 00:56:32,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 00:56:32,266 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:56:32,315 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-01-31 00:56:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 00:56:32,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-01-31 00:56:32,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:56:32,323 INFO L225 Difference]: With dead ends: 58 [2022-01-31 00:56:32,323 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 00:56:32,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 00:56:32,328 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 00:56:32,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 00:56:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 00:56:32,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-31 00:56:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 00:56:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-01-31 00:56:32,360 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2022-01-31 00:56:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:56:32,360 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-01-31 00:56:32,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-01-31 00:56:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 00:56:32,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:56:32,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:56:32,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 00:56:32,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:56:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:56:32,365 INFO L85 PathProgramCache]: Analyzing trace with hash -386926069, now seen corresponding path program 1 times [2022-01-31 00:56:32,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:56:32,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094813948] [2022-01-31 00:56:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:32,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:56:32,416 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 00:56:32,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147300821] [2022-01-31 00:56:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:32,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:32,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:56:32,422 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) [2022-01-31 00:56:32,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 00:56:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:56:32,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-31 00:56:32,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 00:56:32,616 INFO L353 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-01-31 00:56:32,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2022-01-31 00:56:32,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-01-31 00:56:32,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-01-31 00:56:32,798 INFO L387 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 7 treesize of output 3 [2022-01-31 00:56:32,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 00:56:32,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 00:56:32,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-01-31 00:56:32,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:32,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 00:56:32,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:56:32,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094813948] [2022-01-31 00:56:32,942 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 00:56:32,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147300821] [2022-01-31 00:56:32,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147300821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 00:56:32,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 00:56:32,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 00:56:32,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504293060] [2022-01-31 00:56:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 00:56:32,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 00:56:32,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:56:32,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 00:56:32,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-31 00:56:32,951 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:56:33,019 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2022-01-31 00:56:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 00:56:33,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-01-31 00:56:33,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:56:33,021 INFO L225 Difference]: With dead ends: 47 [2022-01-31 00:56:33,021 INFO L226 Difference]: Without dead ends: 45 [2022-01-31 00:56:33,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-31 00:56:33,022 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 00:56:33,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 135 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 00:56:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-31 00:56:33,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2022-01-31 00:56:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 00:56:33,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-01-31 00:56:33,031 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 22 [2022-01-31 00:56:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:56:33,031 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-01-31 00:56:33,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:33,032 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-01-31 00:56:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 00:56:33,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:56:33,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:56:33,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 00:56:33,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:33,244 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:56:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:56:33,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1765590153, now seen corresponding path program 1 times [2022-01-31 00:56:33,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:56:33,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839264892] [2022-01-31 00:56:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:33,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:56:33,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 00:56:33,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855229811] [2022-01-31 00:56:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:33,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:33,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:56:33,268 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) [2022-01-31 00:56:33,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 00:56:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:56:33,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 00:56:33,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 00:56:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:33,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 00:56:33,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:56:33,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839264892] [2022-01-31 00:56:33,387 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 00:56:33,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855229811] [2022-01-31 00:56:33,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855229811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 00:56:33,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 00:56:33,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 00:56:33,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793162132] [2022-01-31 00:56:33,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 00:56:33,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 00:56:33,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:56:33,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 00:56:33,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 00:56:33,389 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:56:33,460 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-01-31 00:56:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 00:56:33,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-01-31 00:56:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:56:33,463 INFO L225 Difference]: With dead ends: 71 [2022-01-31 00:56:33,463 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 00:56:33,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 00:56:33,464 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 00:56:33,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 68 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 00:56:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 00:56:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2022-01-31 00:56:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 00:56:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-01-31 00:56:33,474 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2022-01-31 00:56:33,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:56:33,474 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-01-31 00:56:33,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:33,475 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-01-31 00:56:33,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 00:56:33,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:56:33,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:56:33,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 00:56:33,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 00:56:33,684 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:56:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:56:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1858974921, now seen corresponding path program 1 times [2022-01-31 00:56:33,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:56:33,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963831956] [2022-01-31 00:56:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:33,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:56:33,706 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 00:56:33,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297934126] [2022-01-31 00:56:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:33,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:33,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:56:33,708 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) [2022-01-31 00:56:33,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 00:56:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:56:33,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 00:56:33,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 00:56:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:33,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 00:56:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:33,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:56:33,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963831956] [2022-01-31 00:56:33,868 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 00:56:33,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297934126] [2022-01-31 00:56:33,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297934126] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 00:56:33,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 00:56:33,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-01-31 00:56:33,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753581784] [2022-01-31 00:56:33,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 00:56:33,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 00:56:33,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:56:33,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 00:56:33,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 00:56:33,872 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:56:33,962 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-01-31 00:56:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 00:56:33,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-01-31 00:56:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:56:33,966 INFO L225 Difference]: With dead ends: 66 [2022-01-31 00:56:33,967 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 00:56:33,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-31 00:56:33,974 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 26 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 00:56:33,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 90 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 00:56:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 00:56:33,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2022-01-31 00:56:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 00:56:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-01-31 00:56:33,984 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 24 [2022-01-31 00:56:33,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:56:33,984 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-01-31 00:56:33,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:33,984 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-01-31 00:56:33,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 00:56:33,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:56:33,985 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 00:56:34,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 00:56:34,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:34,205 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:56:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:56:34,205 INFO L85 PathProgramCache]: Analyzing trace with hash -292108345, now seen corresponding path program 1 times [2022-01-31 00:56:34,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:56:34,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793070322] [2022-01-31 00:56:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:34,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:56:34,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 00:56:34,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989275361] [2022-01-31 00:56:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:34,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:34,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:56:34,237 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) [2022-01-31 00:56:34,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 00:56:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:56:34,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-31 00:56:34,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 00:56:34,336 INFO L387 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 10 treesize of output 8 [2022-01-31 00:56:34,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 00:56:34,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-01-31 00:56:34,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-01-31 00:56:34,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-31 00:56:34,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 00:56:34,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-01-31 00:56:34,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 00:56:34,474 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 00:56:34,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-01-31 00:56:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:34,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 00:56:34,583 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_126 (Array Int Int))) (= (select (select (store |c_#memory_int| c_main_~a~0.base v_ArrVal_126) c_main_~b~0.base) c_main_~b~0.offset) 1)) is different from false [2022-01-31 00:56:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-31 00:56:34,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:56:34,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793070322] [2022-01-31 00:56:34,644 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 00:56:34,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989275361] [2022-01-31 00:56:34,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989275361] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 00:56:34,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 00:56:34,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-31 00:56:34,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670914077] [2022-01-31 00:56:34,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 00:56:34,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 00:56:34,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:56:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 00:56:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=123, Unknown=1, NotChecked=22, Total=182 [2022-01-31 00:56:34,646 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:56:34,750 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2022-01-31 00:56:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 00:56:34,751 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-01-31 00:56:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:56:34,752 INFO L225 Difference]: With dead ends: 65 [2022-01-31 00:56:34,752 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 00:56:34,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=188, Unknown=1, NotChecked=28, Total=272 [2022-01-31 00:56:34,755 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 00:56:34,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 219 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2022-01-31 00:56:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 00:56:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2022-01-31 00:56:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 00:56:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-01-31 00:56:34,772 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 26 [2022-01-31 00:56:34,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:56:34,773 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-01-31 00:56:34,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-01-31 00:56:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 00:56:34,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:56:34,774 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:56:34,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 00:56:34,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:34,980 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:56:34,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:56:34,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1603857595, now seen corresponding path program 2 times [2022-01-31 00:56:34,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:56:34,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092309911] [2022-01-31 00:56:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:34,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:56:35,022 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 00:56:35,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948440720] [2022-01-31 00:56:35,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 00:56:35,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:35,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:56:35,024 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) [2022-01-31 00:56:35,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 00:56:35,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 00:56:35,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 00:56:35,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 00:56:35,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 00:56:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:35,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 00:56:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:35,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:56:35,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092309911] [2022-01-31 00:56:35,221 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 00:56:35,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948440720] [2022-01-31 00:56:35,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948440720] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 00:56:35,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 00:56:35,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 00:56:35,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328402929] [2022-01-31 00:56:35,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 00:56:35,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 00:56:35,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:56:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 00:56:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 00:56:35,223 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:56:35,370 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2022-01-31 00:56:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 00:56:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-01-31 00:56:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:56:35,372 INFO L225 Difference]: With dead ends: 89 [2022-01-31 00:56:35,372 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 00:56:35,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-01-31 00:56:35,375 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 00:56:35,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 82 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 00:56:35,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 00:56:35,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 44. [2022-01-31 00:56:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 00:56:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-01-31 00:56:35,391 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 28 [2022-01-31 00:56:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:56:35,393 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-01-31 00:56:35,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-01-31 00:56:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 00:56:35,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:56:35,396 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:56:35,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 00:56:35,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:35,597 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:56:35,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:56:35,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2055408763, now seen corresponding path program 3 times [2022-01-31 00:56:35,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:56:35,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836974234] [2022-01-31 00:56:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:35,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:56:35,611 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 00:56:35,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037617502] [2022-01-31 00:56:35,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 00:56:35,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:35,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:56:35,613 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 00:56:35,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 00:56:35,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 00:56:35,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 00:56:35,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 00:56:35,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 00:56:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:35,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 00:56:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:56:35,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:56:35,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836974234] [2022-01-31 00:56:35,763 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 00:56:35,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037617502] [2022-01-31 00:56:35,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037617502] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 00:56:35,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 00:56:35,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 00:56:35,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207520859] [2022-01-31 00:56:35,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 00:56:35,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 00:56:35,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:56:35,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 00:56:35,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 00:56:35,765 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:35,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:56:35,868 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-01-31 00:56:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 00:56:35,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-01-31 00:56:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:56:35,869 INFO L225 Difference]: With dead ends: 76 [2022-01-31 00:56:35,869 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 00:56:35,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-31 00:56:35,870 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 00:56:35,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 94 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 00:56:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 00:56:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2022-01-31 00:56:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 00:56:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-01-31 00:56:35,876 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 28 [2022-01-31 00:56:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:56:35,876 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-01-31 00:56:35,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-01-31 00:56:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 00:56:35,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:56:35,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:56:35,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 00:56:36,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:36,096 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:56:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:56:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash 376522627, now seen corresponding path program 4 times [2022-01-31 00:56:36,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:56:36,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437235989] [2022-01-31 00:56:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:36,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:56:36,109 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 00:56:36,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858016915] [2022-01-31 00:56:36,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 00:56:36,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:36,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:56:36,111 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 00:56:36,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 00:56:36,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 00:56:36,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 00:56:36,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-31 00:56:36,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 00:56:36,196 INFO L353 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-01-31 00:56:36,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2022-01-31 00:56:36,202 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-01-31 00:56:36,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-01-31 00:56:36,225 INFO L387 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 7 treesize of output 3 [2022-01-31 00:56:36,239 INFO L387 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 10 treesize of output 8 [2022-01-31 00:56:36,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-31 00:56:36,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-31 00:56:36,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 00:56:36,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 00:56:36,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 00:56:36,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 00:56:36,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 00:56:36,381 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 00:56:36,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-01-31 00:56:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 00:56:36,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 00:56:38,520 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~i~0_48 Int)) (or (forall ((v_ArrVal_244 Int)) (= (select (store (select |c_#memory_int| c_main_~b~0.base) (+ (* v_main_~i~0_48 8) c_main_~b~0.offset) v_ArrVal_244) c_main_~b~0.offset) 1)) (not (<= (+ c_main_~i~0 1) v_main_~i~0_48)))) is different from false [2022-01-31 00:56:38,850 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_244 Int) (v_ArrVal_242 Int) (v_main_~i~0_48 Int)) (or (not (<= 2 v_main_~i~0_48)) (= (select (store (store (select |c_#memory_int| c_main_~b~0.base) (+ 8 c_main_~b~0.offset) v_ArrVal_242) (+ (* v_main_~i~0_48 8) c_main_~b~0.offset) v_ArrVal_244) c_main_~b~0.offset) 1))) is different from false [2022-01-31 00:56:38,888 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_244 Int) (v_ArrVal_242 Int) (v_main_~i~0_48 Int) (v_ArrVal_241 (Array Int Int))) (or (not (<= 2 v_main_~i~0_48)) (= (select (store (store (select (store |c_#memory_int| c_main_~a~0.base v_ArrVal_241) c_main_~b~0.base) (+ 8 c_main_~b~0.offset) v_ArrVal_242) (+ (* v_main_~i~0_48 8) c_main_~b~0.offset) v_ArrVal_244) c_main_~b~0.offset) 1))) is different from false [2022-01-31 00:56:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2022-01-31 00:56:38,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:56:38,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437235989] [2022-01-31 00:56:38,930 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 00:56:38,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858016915] [2022-01-31 00:56:38,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858016915] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 00:56:38,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 00:56:38,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 18 [2022-01-31 00:56:38,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983038506] [2022-01-31 00:56:38,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 00:56:38,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 00:56:38,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:56:38,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 00:56:38,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=168, Unknown=3, NotChecked=84, Total=306 [2022-01-31 00:56:38,932 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 18 states, 16 states have (on average 2.375) internal successors, (38), 17 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:41,008 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| c_main_~b~0.base) c_main_~b~0.offset) 1) (= c_main_~b~0.offset 0) (forall ((v_main_~i~0_48 Int)) (or (forall ((v_ArrVal_244 Int)) (= (select (store (select |c_#memory_int| c_main_~b~0.base) (+ (* v_main_~i~0_48 8) c_main_~b~0.offset) v_ArrVal_244) c_main_~b~0.offset) 1)) (not (<= (+ c_main_~i~0 1) v_main_~i~0_48)))) (= c_main_~i~0 1)) is different from false [2022-01-31 00:56:43,035 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| c_main_~b~0.base) c_main_~b~0.offset) 1) (<= 2 c_main_~i~0) (= c_main_~b~0.offset 0) (forall ((v_main_~i~0_48 Int)) (or (forall ((v_ArrVal_244 Int)) (= (select (store (select |c_#memory_int| c_main_~b~0.base) (+ (* v_main_~i~0_48 8) c_main_~b~0.offset) v_ArrVal_244) c_main_~b~0.offset) 1)) (not (<= (+ c_main_~i~0 1) v_main_~i~0_48))))) is different from false [2022-01-31 00:56:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:56:43,146 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-01-31 00:56:43,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 00:56:43,146 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.375) internal successors, (38), 17 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-01-31 00:56:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:56:43,147 INFO L225 Difference]: With dead ends: 74 [2022-01-31 00:56:43,147 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 00:56:43,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=111, Invalid=410, Unknown=5, NotChecked=230, Total=756 [2022-01-31 00:56:43,148 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 00:56:43,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 251 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 149 Unchecked, 0.1s Time] [2022-01-31 00:56:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 00:56:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2022-01-31 00:56:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.15) internal successors, (46), 41 states have internal predecessors, (46), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 00:56:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2022-01-31 00:56:43,153 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 30 [2022-01-31 00:56:43,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:56:43,153 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2022-01-31 00:56:43,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.375) internal successors, (38), 17 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:56:43,153 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2022-01-31 00:56:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 00:56:43,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:56:43,154 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:56:43,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 00:56:43,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:43,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:56:43,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:56:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2143768931, now seen corresponding path program 1 times [2022-01-31 00:56:43,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:56:43,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781411672] [2022-01-31 00:56:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:43,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:56:43,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 00:56:43,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948444921] [2022-01-31 00:56:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:56:43,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:56:43,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:56:43,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 00:56:43,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 00:56:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 00:56:43,432 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 00:56:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 00:56:43,477 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 00:56:43,478 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 00:56:43,479 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 00:56:43,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 00:56:43,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 00:56:43,685 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2022-01-31 00:56:43,687 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 00:56:43,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 12:56:43 BoogieIcfgContainer [2022-01-31 00:56:43,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 00:56:43,710 INFO L158 Benchmark]: Toolchain (without parser) took 12318.80ms. Allocated memory was 185.6MB in the beginning and 237.0MB in the end (delta: 51.4MB). Free memory was 129.2MB in the beginning and 147.7MB in the end (delta: -18.4MB). Peak memory consumption was 32.7MB. Max. memory is 8.0GB. [2022-01-31 00:56:43,710 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 00:56:43,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.09ms. Allocated memory was 185.6MB in the beginning and 237.0MB in the end (delta: 51.4MB). Free memory was 129.1MB in the beginning and 208.3MB in the end (delta: -79.2MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-01-31 00:56:43,710 INFO L158 Benchmark]: Boogie Preprocessor took 43.85ms. Allocated memory is still 237.0MB. Free memory was 208.3MB in the beginning and 206.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 00:56:43,710 INFO L158 Benchmark]: RCFGBuilder took 274.80ms. Allocated memory is still 237.0MB. Free memory was 206.7MB in the beginning and 194.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 00:56:43,711 INFO L158 Benchmark]: TraceAbstraction took 11741.44ms. Allocated memory is still 237.0MB. Free memory was 193.6MB in the beginning and 147.7MB in the end (delta: 45.9MB). Peak memory consumption was 46.4MB. Max. memory is 8.0GB. [2022-01-31 00:56:43,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 249.09ms. Allocated memory was 185.6MB in the beginning and 237.0MB in the end (delta: 51.4MB). Free memory was 129.1MB in the beginning and 208.3MB in the end (delta: -79.2MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.85ms. Allocated memory is still 237.0MB. Free memory was 208.3MB in the beginning and 206.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 274.80ms. Allocated memory is still 237.0MB. Free memory was 206.7MB in the beginning and 194.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 11741.44ms. Allocated memory is still 237.0MB. Free memory was 193.6MB in the beginning and 147.7MB in the end (delta: 45.9MB). Peak memory consumption was 46.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=6, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 1 [L32] b[0] = 1 [L33] i=1 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=1, N=2] [L33] COND TRUE i