/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/loop-crafted/simple_array_index_value_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 12:06:41,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 12:06:41,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 12:06:41,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 12:06:41,138 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 [2022-03-18 12:06:41,161 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 12:06:41,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 12:06:41,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 12:06:41,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 12:06:41,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 12:06:41,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 12:06:41,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 12:06:41,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 12:06:41,164 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 12:06:41,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 12:06:41,164 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 12:06:41,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 12:06:41,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 12:06:41,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 12:06:41,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 12:06:41,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 12:06:41,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 12:06:41,166 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 12:06:41,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 12:06:41,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 12:06:41,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 12:06:41,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 12:06:41,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 12:06:41,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 12:06:41,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:06:41,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 12:06:41,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 12:06:41,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 12:06:41,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 12:06:41,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 12:06:41,167 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 12:06:41,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 12:06:41,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 12:06:41,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 12:06:41,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 12:06:41,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 12:06:41,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 12:06:41,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 12:06:41,355 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 12:06:41,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-03-18 12:06:41,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72c7726f/ddb0cdd443074952a22a2e5401f41dd0/FLAGb82a6c2f1 [2022-03-18 12:06:41,750 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 12:06:41,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-03-18 12:06:41,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72c7726f/ddb0cdd443074952a22a2e5401f41dd0/FLAGb82a6c2f1 [2022-03-18 12:06:41,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72c7726f/ddb0cdd443074952a22a2e5401f41dd0 [2022-03-18 12:06:41,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 12:06:41,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 12:06:41,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 12:06:41,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 12:06:41,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 12:06:41,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278e020a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41, skipping insertion in model container [2022-03-18 12:06:41,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 12:06:41,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 12:06:41,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932] [2022-03-18 12:06:41,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:06:41,911 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 12:06:41,924 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932] [2022-03-18 12:06:41,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:06:41,936 INFO L208 MainTranslator]: Completed translation [2022-03-18 12:06:41,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41 WrapperNode [2022-03-18 12:06:41,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 12:06:41,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 12:06:41,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 12:06:41,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 12:06:41,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 12:06:41,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 12:06:41,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 12:06:41,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 12:06:41,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41" (1/1) ... [2022-03-18 12:06:41,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:06:41,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:06:42,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 12:06:42,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 12:06:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 12:06:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 12:06:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 12:06:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 12:06:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 12:06:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 12:06:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 12:06:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 12:06:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 12:06:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 12:06:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 12:06:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 12:06:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 12:06:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 12:06:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 12:06:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 12:06:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-18 12:06:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 12:06:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 12:06:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 12:06:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 12:06:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 12:06:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 12:06:42,100 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 12:06:42,102 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 12:06:42,248 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 12:06:42,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 12:06:42,252 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 12:06:42,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:06:42 BoogieIcfgContainer [2022-03-18 12:06:42,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 12:06:42,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 12:06:42,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 12:06:42,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 12:06:42,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:06:41" (1/3) ... [2022-03-18 12:06:42,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539fc4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:06:42, skipping insertion in model container [2022-03-18 12:06:42,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:06:41" (2/3) ... [2022-03-18 12:06:42,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539fc4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:06:42, skipping insertion in model container [2022-03-18 12:06:42,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:06:42" (3/3) ... [2022-03-18 12:06:42,268 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2022-03-18 12:06:42,272 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 12:06:42,272 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 12:06:42,318 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 12:06:42,326 INFO L340 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 [2022-03-18 12:06:42,326 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 12:06:42,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 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) [2022-03-18 12:06:42,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-18 12:06:42,351 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:06:42,351 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:06:42,352 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:06:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:06:42,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1210672905, now seen corresponding path program 1 times [2022-03-18 12:06:42,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:06:42,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639486730] [2022-03-18 12:06:42,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:06:42,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:06:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:06:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:06:42,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:06:42,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639486730] [2022-03-18 12:06:42,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639486730] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:06:42,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:06:42,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 12:06:42,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649178249] [2022-03-18 12:06:42,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:06:42,568 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 12:06:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:06:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 12:06:42,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 12:06:42,586 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 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 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:06:42,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:06:42,663 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2022-03-18 12:06:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 12:06:42,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-18 12:06:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:06:42,669 INFO L225 Difference]: With dead ends: 62 [2022-03-18 12:06:42,669 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 12:06:42,671 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 12:06:42,673 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:06:42,674 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 33 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:06:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 12:06:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2022-03-18 12:06:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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) [2022-03-18 12:06:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-03-18 12:06:42,698 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2022-03-18 12:06:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:06:42,698 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-03-18 12:06:42,698 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:06:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-03-18 12:06:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-18 12:06:42,699 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:06:42,699 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:06:42,699 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 12:06:42,699 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:06:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:06:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash 778735204, now seen corresponding path program 1 times [2022-03-18 12:06:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:06:42,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435638697] [2022-03-18 12:06:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:06:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:06:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:06:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:42,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 12:06:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:06:42,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:06:42,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435638697] [2022-03-18 12:06:42,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435638697] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:06:42,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477874074] [2022-03-18 12:06:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:06:42,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:06:42,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:06:42,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:06:42,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 12:06:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:42,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-18 12:06:42,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:06:43,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-18 12:06:43,126 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-03-18 12:06:43,126 INFO L390 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 37 treesize of output 22 [2022-03-18 12:06:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:06:43,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:06:43,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-03-18 12:06:43,446 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-18 12:06:43,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88 [2022-03-18 12:06:43,547 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-03-18 12:06:43,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 336 treesize of output 315 [2022-03-18 12:06:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:06:43,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477874074] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:06:43,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:06:43,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 12] total 20 [2022-03-18 12:06:43,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303885804] [2022-03-18 12:06:43,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:06:43,830 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 12:06:43,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:06:43,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 12:06:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-03-18 12:06:43,834 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-18 12:06:44,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:06:44,148 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-03-18 12:06:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 12:06:44,148 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2022-03-18 12:06:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:06:44,149 INFO L225 Difference]: With dead ends: 52 [2022-03-18 12:06:44,149 INFO L226 Difference]: Without dead ends: 41 [2022-03-18 12:06:44,150 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2022-03-18 12:06:44,150 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:06:44,151 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 69 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 264 Invalid, 0 Unknown, 33 Unchecked, 0.2s Time] [2022-03-18 12:06:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-18 12:06:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2022-03-18 12:06:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:06:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-03-18 12:06:44,161 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2022-03-18 12:06:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:06:44,161 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-03-18 12:06:44,162 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-18 12:06:44,162 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-03-18 12:06:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-18 12:06:44,165 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:06:44,165 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:06:44,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 12:06:44,382 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:06:44,382 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:06:44,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:06:44,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1692936895, now seen corresponding path program 2 times [2022-03-18 12:06:44,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:06:44,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50135370] [2022-03-18 12:06:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:06:44,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:06:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:06:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 12:06:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 12:06:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 12:06:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:06:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50135370] [2022-03-18 12:06:44,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50135370] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:06:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437730099] [2022-03-18 12:06:44,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:06:44,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:06:44,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:06:44,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:06:44,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 12:06:44,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:06:44,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:06:44,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-18 12:06:44,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:06:44,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-18 12:06:44,803 INFO L356 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-03-18 12:06:44,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48 [2022-03-18 12:06:45,007 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-03-18 12:06:45,008 INFO L390 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 37 treesize of output 22 [2022-03-18 12:06:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 12:06:45,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:06:48,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437730099] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:06:48,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 12:06:48,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16] total 19 [2022-03-18 12:06:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374691707] [2022-03-18 12:06:48,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 12:06:48,766 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 12:06:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:06:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 12:06:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=470, Unknown=2, NotChecked=0, Total=552 [2022-03-18 12:06:48,767 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-03-18 12:06:49,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:06:49,252 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2022-03-18 12:06:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-18 12:06:49,252 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29 [2022-03-18 12:06:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:06:49,254 INFO L225 Difference]: With dead ends: 66 [2022-03-18 12:06:49,254 INFO L226 Difference]: Without dead ends: 55 [2022-03-18 12:06:49,255 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=257, Invalid=1547, Unknown=2, NotChecked=0, Total=1806 [2022-03-18 12:06:49,255 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:06:49,256 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 71 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 165 Invalid, 0 Unknown, 91 Unchecked, 0.1s Time] [2022-03-18 12:06:49,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-18 12:06:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2022-03-18 12:06:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 12:06:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2022-03-18 12:06:49,262 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 29 [2022-03-18 12:06:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:06:49,262 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2022-03-18 12:06:49,262 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-03-18 12:06:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2022-03-18 12:06:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 12:06:49,263 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:06:49,263 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:06:49,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 12:06:49,463 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 12:06:49,464 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:06:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:06:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1452373648, now seen corresponding path program 1 times [2022-03-18 12:06:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:06:49,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950523872] [2022-03-18 12:06:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:06:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:06:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:06:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:49,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 12:06:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:49,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 12:06:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:49,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:06:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 12:06:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-18 12:06:49,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:06:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950523872] [2022-03-18 12:06:49,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950523872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:06:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934699249] [2022-03-18 12:06:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:06:49,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:06:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:06:49,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:06:49,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 12:06:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:49,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-18 12:06:49,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:06:49,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-03-18 12:06:49,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95 [2022-03-18 12:06:49,760 INFO L356 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-03-18 12:06:49,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 28 [2022-03-18 12:06:52,712 INFO L356 Elim1Store]: treesize reduction 39, result has 39.1 percent of original size [2022-03-18 12:06:52,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2022-03-18 12:06:53,562 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-18 12:06:53,562 INFO L390 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 48 treesize of output 21 [2022-03-18 12:06:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 12:06:53,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:06:58,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934699249] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:06:58,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 12:06:58,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18] total 21 [2022-03-18 12:06:58,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098692] [2022-03-18 12:06:58,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 12:06:58,234 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 12:06:58,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:06:58,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 12:06:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=599, Unknown=3, NotChecked=0, Total=702 [2022-03-18 12:06:58,236 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-03-18 12:06:58,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:06:58,684 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2022-03-18 12:06:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-18 12:06:58,684 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 45 [2022-03-18 12:06:58,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:06:58,685 INFO L225 Difference]: With dead ends: 79 [2022-03-18 12:06:58,685 INFO L226 Difference]: Without dead ends: 62 [2022-03-18 12:06:58,685 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=208, Invalid=1349, Unknown=3, NotChecked=0, Total=1560 [2022-03-18 12:06:58,686 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:06:58,686 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 171 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 138 Invalid, 0 Unknown, 150 Unchecked, 0.1s Time] [2022-03-18 12:06:58,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-18 12:06:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2022-03-18 12:06:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 12:06:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2022-03-18 12:06:58,694 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 45 [2022-03-18 12:06:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:06:58,694 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2022-03-18 12:06:58,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-03-18 12:06:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2022-03-18 12:06:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 12:06:58,695 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:06:58,695 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:06:58,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-18 12:06:58,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:06:58,900 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:06:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:06:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash 345870625, now seen corresponding path program 2 times [2022-03-18 12:06:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:06:58,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298513512] [2022-03-18 12:06:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:06:58,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:06:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:06:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 12:06:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 12:06:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:06:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:06:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 12:06:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:06:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:06:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-18 12:06:59,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:06:59,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298513512] [2022-03-18 12:06:59,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298513512] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:06:59,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004803110] [2022-03-18 12:06:59,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:06:59,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:06:59,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:06:59,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:06:59,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 12:06:59,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:06:59,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:06:59,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-18 12:06:59,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:06:59,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-03-18 12:06:59,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95 [2022-03-18 12:07:05,322 INFO L356 Elim1Store]: treesize reduction 39, result has 39.1 percent of original size [2022-03-18 12:07:05,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2022-03-18 12:07:10,918 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-18 12:07:10,919 INFO L390 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 48 treesize of output 21 [2022-03-18 12:07:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 38 refuted. 4 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-18 12:07:11,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:07:17,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004803110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:07:17,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 12:07:17,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 21] total 24 [2022-03-18 12:07:17,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39139332] [2022-03-18 12:07:17,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 12:07:17,228 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-18 12:07:17,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:07:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-18 12:07:17,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=794, Unknown=11, NotChecked=0, Total=930 [2022-03-18 12:07:17,230 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 24 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 10 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-03-18 12:07:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:07:22,445 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2022-03-18 12:07:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-18 12:07:22,445 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 10 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 61 [2022-03-18 12:07:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:07:22,446 INFO L225 Difference]: With dead ends: 111 [2022-03-18 12:07:22,446 INFO L226 Difference]: Without dead ends: 86 [2022-03-18 12:07:22,447 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 72 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=251, Invalid=1805, Unknown=14, NotChecked=0, Total=2070 [2022-03-18 12:07:22,448 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 57 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:07:22,448 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 208 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 263 Invalid, 0 Unknown, 344 Unchecked, 0.2s Time] [2022-03-18 12:07:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-03-18 12:07:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2022-03-18 12:07:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 12:07:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2022-03-18 12:07:22,461 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 61 [2022-03-18 12:07:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:07:22,461 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2022-03-18 12:07:22,461 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 10 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-03-18 12:07:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2022-03-18 12:07:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-18 12:07:22,463 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:07:22,463 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:07:22,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 12:07:22,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:07:22,664 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:07:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:07:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash 648561106, now seen corresponding path program 3 times [2022-03-18 12:07:22,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:07:22,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798982183] [2022-03-18 12:07:22,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:07:22,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:07:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:07:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 12:07:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 12:07:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:07:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:07:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:07:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:07:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:07:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:07:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-18 12:07:22,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:07:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798982183] [2022-03-18 12:07:22,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798982183] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:07:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807530250] [2022-03-18 12:07:22,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:07:22,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:07:22,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:07:22,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:07:22,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 12:07:23,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-18 12:07:23,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:07:23,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-18 12:07:23,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:07:23,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-03-18 12:07:23,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 12:07:23,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95 [2022-03-18 12:07:23,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 12:07:23,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 102 treesize of output 30 [2022-03-18 12:07:23,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 95 [2022-03-18 12:07:23,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 12:07:23,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 12:07:23,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-18 12:07:23,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 143 [2022-03-18 12:07:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 45 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-18 12:07:23,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:07:26,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-03-18 12:07:26,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-18 12:07:26,649 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-18 12:07:26,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88 [2022-03-18 12:07:26,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-18 12:07:26,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 54 treesize of output 4 [2022-03-18 12:07:26,688 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-18 12:07:26,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 10 [2022-03-18 12:07:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-18 12:07:27,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807530250] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:07:27,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:07:27,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 21] total 43 [2022-03-18 12:07:27,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503322795] [2022-03-18 12:07:27,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:07:27,005 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-18 12:07:27,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:07:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-18 12:07:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1542, Unknown=0, NotChecked=0, Total=1806 [2022-03-18 12:07:27,006 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-18 12:07:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:07:32,424 INFO L93 Difference]: Finished difference Result 225 states and 259 transitions. [2022-03-18 12:07:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-18 12:07:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) Word has length 77 [2022-03-18 12:07:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:07:32,426 INFO L225 Difference]: With dead ends: 225 [2022-03-18 12:07:32,427 INFO L226 Difference]: Without dead ends: 192 [2022-03-18 12:07:32,429 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1960 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1053, Invalid=6087, Unknown=0, NotChecked=0, Total=7140 [2022-03-18 12:07:32,429 INFO L912 BasicCegarLoop]: 33 mSDtfsCounter, 477 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:07:32,429 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 123 Invalid, 2485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 1782 Invalid, 0 Unknown, 147 Unchecked, 2.3s Time] [2022-03-18 12:07:32,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-03-18 12:07:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 127. [2022-03-18 12:07:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.086021505376344) internal successors, (101), 95 states have internal predecessors, (101), 22 states have call successors, (22), 12 states have call predecessors, (22), 11 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-18 12:07:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions. [2022-03-18 12:07:32,452 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 77 [2022-03-18 12:07:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:07:32,452 INFO L478 AbstractCegarLoop]: Abstraction has 127 states and 144 transitions. [2022-03-18 12:07:32,452 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-18 12:07:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions. [2022-03-18 12:07:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 12:07:32,453 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:07:32,454 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:07:32,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 12:07:32,661 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:07:32,661 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:07:32,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:07:32,661 INFO L85 PathProgramCache]: Analyzing trace with hash 616668035, now seen corresponding path program 4 times [2022-03-18 12:07:32,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:07:32,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633458457] [2022-03-18 12:07:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:07:32,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:07:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:07:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 12:07:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 12:07:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:07:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:07:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:07:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:07:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:07:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:07:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:07:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:07:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-03-18 12:07:32,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:07:32,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633458457] [2022-03-18 12:07:32,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633458457] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:07:32,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658867066] [2022-03-18 12:07:32,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:07:32,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:07:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:07:32,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:07:32,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 12:07:33,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:07:33,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:07:33,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 12:07:33,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:07:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-03-18 12:07:33,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:07:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-03-18 12:07:33,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658867066] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:07:33,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:07:33,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2022-03-18 12:07:33,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262962630] [2022-03-18 12:07:33,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:07:33,809 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 12:07:33,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:07:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 12:07:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2022-03-18 12:07:33,810 INFO L87 Difference]: Start difference. First operand 127 states and 144 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-03-18 12:07:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:07:35,127 INFO L93 Difference]: Finished difference Result 211 states and 242 transitions. [2022-03-18 12:07:35,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 12:07:35,127 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 93 [2022-03-18 12:07:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:07:35,129 INFO L225 Difference]: With dead ends: 211 [2022-03-18 12:07:35,129 INFO L226 Difference]: Without dead ends: 159 [2022-03-18 12:07:35,129 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=693, Unknown=0, NotChecked=0, Total=992 [2022-03-18 12:07:35,130 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 191 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:07:35,130 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 79 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:07:35,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-18 12:07:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 116. [2022-03-18 12:07:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-03-18 12:07:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2022-03-18 12:07:35,158 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 93 [2022-03-18 12:07:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:07:35,158 INFO L478 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2022-03-18 12:07:35,159 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-03-18 12:07:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2022-03-18 12:07:35,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-18 12:07:35,160 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:07:35,161 INFO L500 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:07:35,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 12:07:35,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:07:35,368 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:07:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:07:35,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1102839803, now seen corresponding path program 5 times [2022-03-18 12:07:35,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:07:35,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845141058] [2022-03-18 12:07:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:07:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:07:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:07:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 12:07:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 12:07:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:07:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:07:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:07:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:07:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:07:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:07:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:07:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:07:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:07:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:07:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:07:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:07:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:07:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:07:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:07:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:07:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 6 proven. 378 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-18 12:07:35,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:07:35,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845141058] [2022-03-18 12:07:35,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845141058] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:07:35,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248557308] [2022-03-18 12:07:35,694 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:07:35,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:07:35,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:07:35,696 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:07:35,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 12:08:15,986 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-03-18 12:08:15,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:08:16,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-18 12:08:16,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:08:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-03-18 12:08:16,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:08:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 6 proven. 378 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-18 12:08:16,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248557308] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:08:16,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:08:16,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 34 [2022-03-18 12:08:16,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385221381] [2022-03-18 12:08:16,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:08:16,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-18 12:08:16,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:08:16,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-18 12:08:16,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2022-03-18 12:08:16,944 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2022-03-18 12:08:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:08:35,169 INFO L93 Difference]: Finished difference Result 320 states and 388 transitions. [2022-03-18 12:08:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-18 12:08:35,170 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) Word has length 149 [2022-03-18 12:08:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:08:35,171 INFO L225 Difference]: With dead ends: 320 [2022-03-18 12:08:35,172 INFO L226 Difference]: Without dead ends: 287 [2022-03-18 12:08:35,173 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1115, Invalid=2917, Unknown=0, NotChecked=0, Total=4032 [2022-03-18 12:08:35,173 INFO L912 BasicCegarLoop]: 61 mSDtfsCounter, 677 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2890 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 2890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:08:35,173 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 143 Invalid, 3629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 2890 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-18 12:08:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-03-18 12:08:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 180. [2022-03-18 12:08:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 134 states have internal predecessors, (135), 36 states have call successors, (36), 11 states have call predecessors, (36), 10 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-18 12:08:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 206 transitions. [2022-03-18 12:08:35,203 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 206 transitions. Word has length 149 [2022-03-18 12:08:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:08:35,204 INFO L478 AbstractCegarLoop]: Abstraction has 180 states and 206 transitions. [2022-03-18 12:08:35,204 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2022-03-18 12:08:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 206 transitions. [2022-03-18 12:08:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-03-18 12:08:35,206 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:08:35,206 INFO L500 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:08:35,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 12:08:35,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:08:35,420 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:08:35,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:08:35,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1415471691, now seen corresponding path program 6 times [2022-03-18 12:08:35,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:08:35,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168656429] [2022-03-18 12:08:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:08:35,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:08:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:08:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 12:08:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 12:08:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:08:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:08:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:08:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:08:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:08:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:08:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:08:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:08:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:08:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:08:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:08:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:08:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:08:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:08:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:08:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:08:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:08:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:08:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:08:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:08:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:08:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:08:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:08:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:08:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:08:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:08:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:08:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:08:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:08:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:08:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:08:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:08:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3546 backedges. 6 proven. 1770 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2022-03-18 12:08:36,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:08:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168656429] [2022-03-18 12:08:36,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168656429] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:08:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140565008] [2022-03-18 12:08:36,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:08:36,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:08:36,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:08:36,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:08:36,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process