/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 22:42:31,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 22:42:31,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 22:42:31,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 22:42:31,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 22:42:31,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 22:42:31,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 22:42:31,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-06 22:42:31,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 22:42:31,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 22:42:31,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 22:42:31,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 22:42:31,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 22:42:31,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 22:42:31,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 22:42:31,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 22:42:31,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 22:42:31,107 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 22:42:31,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 22:42:31,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 22:42:31,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 22:42:31,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 22:42:31,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 22:42:31,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 22:42:31,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 22:42:31,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 22:42:31,108 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 22:42:31,108 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 22:42:31,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 22:42:31,108 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-06 22:42:31,108 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 22:42:31,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 22:42:31,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 22:42:31,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 22:42:31,303 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 22:42:31,304 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 22:42:31,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-04-06 22:42:31,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bdd1847/4d26133c85df4aecb7c57377c891fbf9/FLAGfd98bf660 [2022-04-06 22:42:31,697 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 22:42:31,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-04-06 22:42:31,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bdd1847/4d26133c85df4aecb7c57377c891fbf9/FLAGfd98bf660 [2022-04-06 22:42:32,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bdd1847/4d26133c85df4aecb7c57377c891fbf9 [2022-04-06 22:42:32,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 22:42:32,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 22:42:32,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 22:42:32,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 22:42:32,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 22:42:32,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6716de98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32, skipping insertion in model container [2022-04-06 22:42:32,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 22:42:32,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 22:42:32,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-04-06 22:42:32,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 22:42:32,283 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 22:42:32,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-04-06 22:42:32,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 22:42:32,302 INFO L208 MainTranslator]: Completed translation [2022-04-06 22:42:32,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32 WrapperNode [2022-04-06 22:42:32,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 22:42:32,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 22:42:32,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 22:42:32,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 22:42:32,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 22:42:32,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 22:42:32,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 22:42:32,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 22:42:32,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32" (1/1) ... [2022-04-06 22:42:32,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 22:42:32,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:32,352 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) [2022-04-06 22:42:32,358 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 [2022-04-06 22:42:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 22:42:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 22:42:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 22:42:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 22:42:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 22:42:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 22:42:32,383 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 22:42:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 22:42:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 22:42:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 22:42:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 22:42:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 22:42:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 22:42:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 22:42:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 22:42:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 22:42:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 22:42:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 22:42:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 22:42:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 22:42:32,442 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 22:42:32,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 22:42:32,541 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 22:42:32,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 22:42:32,549 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-06 22:42:32,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:42:32 BoogieIcfgContainer [2022-04-06 22:42:32,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 22:42:32,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 22:42:32,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 22:42:32,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 22:42:32,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 10:42:32" (1/3) ... [2022-04-06 22:42:32,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7413cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 10:42:32, skipping insertion in model container [2022-04-06 22:42:32,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:42:32" (2/3) ... [2022-04-06 22:42:32,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7413cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 10:42:32, skipping insertion in model container [2022-04-06 22:42:32,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:42:32" (3/3) ... [2022-04-06 22:42:32,557 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2022-04-06 22:42:32,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 22:42:32,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 22:42:32,589 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 22:42:32,594 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 22:42:32,594 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 22:42:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-06 22:42:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 22:42:32,619 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:32,620 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:32,620 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:32,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1237885594, now seen corresponding path program 1 times [2022-04-06 22:42:32,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:32,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [726603122] [2022-04-06 22:42:32,638 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1237885594, now seen corresponding path program 2 times [2022-04-06 22:42:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:32,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058114810] [2022-04-06 22:42:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:32,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 22:42:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 22:42:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 22:42:32,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 22:42:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 22:42:32,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 22:42:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 22:42:32,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 22:42:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 22:42:32,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 22:42:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 22:42:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 22:42:32,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:32,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058114810] [2022-04-06 22:42:32,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058114810] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:32,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:32,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 22:42:32,794 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:32,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [726603122] [2022-04-06 22:42:32,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [726603122] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:32,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:32,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 22:42:32,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203773257] [2022-04-06 22:42:32,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:32,798 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 22:42:32,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:32,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 22:42:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 22:42:32,837 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 22:42:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:32,897 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2022-04-06 22:42:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 22:42:32,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-06 22:42:32,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:32,908 INFO L225 Difference]: With dead ends: 73 [2022-04-06 22:42:32,908 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 22:42:32,910 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 22:42:32,912 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:32,913 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 22:42:32,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 22:42:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-06 22:42:32,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 22:42:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-04-06 22:42:32,938 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 33 [2022-04-06 22:42:32,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:32,938 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-04-06 22:42:32,938 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 22:42:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-04-06 22:42:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-06 22:42:32,940 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:32,940 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:32,940 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 22:42:32,940 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:32,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1569470122, now seen corresponding path program 1 times [2022-04-06 22:42:32,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:32,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [472276245] [2022-04-06 22:42:32,941 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1569470122, now seen corresponding path program 2 times [2022-04-06 22:42:32,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:32,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246077199] [2022-04-06 22:42:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:32,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:32,958 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:32,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103990609] [2022-04-06 22:42:32,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:32,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:32,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:32,962 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) [2022-04-06 22:42:32,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 22:42:33,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 22:42:33,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:33,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 22:42:33,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 22:42:33,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 22:42:33,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:33,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246077199] [2022-04-06 22:42:33,234 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:33,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103990609] [2022-04-06 22:42:33,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103990609] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:33,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:33,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 22:42:33,236 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:33,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [472276245] [2022-04-06 22:42:33,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [472276245] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:33,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:33,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 22:42:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504513789] [2022-04-06 22:42:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:33,237 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 22:42:33,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 22:42:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 22:42:33,238 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 22:42:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:33,353 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2022-04-06 22:42:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 22:42:33,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-04-06 22:42:33,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:33,356 INFO L225 Difference]: With dead ends: 54 [2022-04-06 22:42:33,356 INFO L226 Difference]: Without dead ends: 51 [2022-04-06 22:42:33,358 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 22:42:33,359 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:33,362 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 173 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 22:42:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-04-06 22:42:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-04-06 22:42:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-06 22:42:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-04-06 22:42:33,378 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 34 [2022-04-06 22:42:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:33,379 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-04-06 22:42:33,379 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 22:42:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-04-06 22:42:33,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 22:42:33,380 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:33,380 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:33,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:33,580 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 [2022-04-06 22:42:33,581 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:33,581 INFO L85 PathProgramCache]: Analyzing trace with hash 584996456, now seen corresponding path program 1 times [2022-04-06 22:42:33,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:33,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [191428310] [2022-04-06 22:42:33,582 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:33,582 INFO L85 PathProgramCache]: Analyzing trace with hash 584996456, now seen corresponding path program 2 times [2022-04-06 22:42:33,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:33,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468214120] [2022-04-06 22:42:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:33,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:33,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:33,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140566656] [2022-04-06 22:42:33,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:33,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:33,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:33,615 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) [2022-04-06 22:42:33,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 22:42:33,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:42:33,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:33,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 22:42:33,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 22:42:33,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 22:42:33,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:33,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468214120] [2022-04-06 22:42:33,908 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:33,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140566656] [2022-04-06 22:42:33,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140566656] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:42:33,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:42:33,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-06 22:42:33,909 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:33,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [191428310] [2022-04-06 22:42:33,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [191428310] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:33,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:33,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 22:42:33,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021580031] [2022-04-06 22:42:33,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:33,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 22:42:33,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 22:42:33,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-06 22:42:33,911 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 22:42:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:34,066 INFO L93 Difference]: Finished difference Result 103 states and 143 transitions. [2022-04-06 22:42:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 22:42:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-04-06 22:42:34,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:34,069 INFO L225 Difference]: With dead ends: 103 [2022-04-06 22:42:34,070 INFO L226 Difference]: Without dead ends: 96 [2022-04-06 22:42:34,070 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-04-06 22:42:34,073 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 58 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:34,073 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 232 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 22:42:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-04-06 22:42:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2022-04-06 22:42:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 48 states have internal predecessors, (59), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 22:42:34,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2022-04-06 22:42:34,087 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 39 [2022-04-06 22:42:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:34,087 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2022-04-06 22:42:34,087 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 22:42:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2022-04-06 22:42:34,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 22:42:34,088 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:34,088 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:34,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:34,303 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 [2022-04-06 22:42:34,304 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash -974923140, now seen corresponding path program 1 times [2022-04-06 22:42:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1211135238] [2022-04-06 22:42:34,305 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash -974923140, now seen corresponding path program 2 times [2022-04-06 22:42:34,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:34,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870563251] [2022-04-06 22:42:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:34,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:34,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292722823] [2022-04-06 22:42:34,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:34,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:34,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:34,318 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) [2022-04-06 22:42:34,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 22:42:34,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:42:34,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:34,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2022-04-06 22:42:34,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 22:42:34,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 22:42:34,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:34,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870563251] [2022-04-06 22:42:34,881 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:34,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292722823] [2022-04-06 22:42:34,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292722823] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:42:34,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:42:34,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2022-04-06 22:42:34,885 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:34,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1211135238] [2022-04-06 22:42:34,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1211135238] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:34,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:34,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 22:42:34,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510924484] [2022-04-06 22:42:34,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:34,886 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 22:42:34,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:34,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 22:42:34,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-04-06 22:42:34,886 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 22:42:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:35,183 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2022-04-06 22:42:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 22:42:35,183 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2022-04-06 22:42:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:35,184 INFO L225 Difference]: With dead ends: 112 [2022-04-06 22:42:35,184 INFO L226 Difference]: Without dead ends: 110 [2022-04-06 22:42:35,185 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-04-06 22:42:35,185 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 63 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:35,185 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 297 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 22:42:35,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-04-06 22:42:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2022-04-06 22:42:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 64 states have internal predecessors, (78), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-06 22:42:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2022-04-06 22:42:35,209 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 42 [2022-04-06 22:42:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:35,210 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2022-04-06 22:42:35,211 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 22:42:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2022-04-06 22:42:35,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 22:42:35,214 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:35,214 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:35,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:35,419 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 [2022-04-06 22:42:35,419 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash 81990170, now seen corresponding path program 1 times [2022-04-06 22:42:35,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:35,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [125153073] [2022-04-06 22:42:35,420 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:35,421 INFO L85 PathProgramCache]: Analyzing trace with hash 81990170, now seen corresponding path program 2 times [2022-04-06 22:42:35,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:35,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398266907] [2022-04-06 22:42:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:35,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:35,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:35,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403866989] [2022-04-06 22:42:35,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:35,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:35,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:35,443 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) [2022-04-06 22:42:35,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 22:42:35,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:42:35,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:35,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 22:42:35,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-04-06 22:42:35,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 22:42:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:35,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398266907] [2022-04-06 22:42:35,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:35,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403866989] [2022-04-06 22:42:35,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403866989] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 22:42:35,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 22:42:35,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-04-06 22:42:35,675 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:35,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [125153073] [2022-04-06 22:42:35,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [125153073] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:35,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:35,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 22:42:35,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436358004] [2022-04-06 22:42:35,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:35,676 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 22:42:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:35,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 22:42:35,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-04-06 22:42:35,676 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 22:42:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:35,748 INFO L93 Difference]: Finished difference Result 130 states and 179 transitions. [2022-04-06 22:42:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 22:42:35,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-04-06 22:42:35,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:35,750 INFO L225 Difference]: With dead ends: 130 [2022-04-06 22:42:35,750 INFO L226 Difference]: Without dead ends: 128 [2022-04-06 22:42:35,750 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-06 22:42:35,751 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:35,751 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 22:42:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-04-06 22:42:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2022-04-06 22:42:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 76 states have (on average 1.263157894736842) internal successors, (96), 77 states have internal predecessors, (96), 39 states have call successors, (39), 8 states have call predecessors, (39), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 22:42:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 172 transitions. [2022-04-06 22:42:35,768 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 172 transitions. Word has length 47 [2022-04-06 22:42:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:35,768 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 172 transitions. [2022-04-06 22:42:35,768 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 22:42:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 172 transitions. [2022-04-06 22:42:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 22:42:35,769 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:35,769 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:35,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:35,983 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 [2022-04-06 22:42:35,984 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:35,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:35,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1524769911, now seen corresponding path program 1 times [2022-04-06 22:42:35,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:35,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1868004592] [2022-04-06 22:42:35,985 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:35,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1524769911, now seen corresponding path program 2 times [2022-04-06 22:42:35,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:35,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915679888] [2022-04-06 22:42:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:35,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:35,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:35,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033583534] [2022-04-06 22:42:35,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:35,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:35,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:35,997 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) [2022-04-06 22:42:35,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 22:42:36,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:42:36,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:36,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2022-04-06 22:42:36,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 22:42:36,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 22:42:36,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915679888] [2022-04-06 22:42:36,557 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033583534] [2022-04-06 22:42:36,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033583534] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:42:36,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:42:36,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 17 [2022-04-06 22:42:36,557 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1868004592] [2022-04-06 22:42:36,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1868004592] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:36,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:36,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 22:42:36,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30047995] [2022-04-06 22:42:36,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:36,558 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 22:42:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:36,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 22:42:36,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-04-06 22:42:36,559 INFO L87 Difference]: Start difference. First operand 123 states and 172 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-06 22:42:36,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:36,800 INFO L93 Difference]: Finished difference Result 137 states and 184 transitions. [2022-04-06 22:42:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 22:42:36,800 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 47 [2022-04-06 22:42:36,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:36,801 INFO L225 Difference]: With dead ends: 137 [2022-04-06 22:42:36,801 INFO L226 Difference]: Without dead ends: 135 [2022-04-06 22:42:36,802 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-04-06 22:42:36,802 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 66 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:36,803 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 239 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 22:42:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-04-06 22:42:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2022-04-06 22:42:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 83 states have internal predecessors, (102), 39 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 22:42:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 178 transitions. [2022-04-06 22:42:36,819 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 178 transitions. Word has length 47 [2022-04-06 22:42:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:36,819 INFO L478 AbstractCegarLoop]: Abstraction has 131 states and 178 transitions. [2022-04-06 22:42:36,820 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-06 22:42:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 178 transitions. [2022-04-06 22:42:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 22:42:36,820 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:36,820 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:36,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:37,036 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 [2022-04-06 22:42:37,036 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:37,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1836145722, now seen corresponding path program 3 times [2022-04-06 22:42:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:37,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1313215799] [2022-04-06 22:42:37,037 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1836145722, now seen corresponding path program 4 times [2022-04-06 22:42:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:37,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748325792] [2022-04-06 22:42:37,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:37,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:37,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:37,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91613031] [2022-04-06 22:42:37,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 22:42:37,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:37,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:37,047 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) [2022-04-06 22:42:37,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 22:42:37,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 22:42:37,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:37,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 22:42:37,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 22:42:37,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 22:42:37,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:37,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748325792] [2022-04-06 22:42:37,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:37,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91613031] [2022-04-06 22:42:37,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91613031] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:37,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:37,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 22:42:37,140 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:37,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1313215799] [2022-04-06 22:42:37,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1313215799] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:37,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:37,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 22:42:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512452903] [2022-04-06 22:42:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:37,140 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 22:42:37,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 22:42:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 22:42:37,141 INFO L87 Difference]: Start difference. First operand 131 states and 178 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 22:42:37,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:37,207 INFO L93 Difference]: Finished difference Result 170 states and 230 transitions. [2022-04-06 22:42:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 22:42:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-04-06 22:42:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:37,208 INFO L225 Difference]: With dead ends: 170 [2022-04-06 22:42:37,208 INFO L226 Difference]: Without dead ends: 114 [2022-04-06 22:42:37,209 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-06 22:42:37,209 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:37,209 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 155 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 22:42:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-04-06 22:42:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-04-06 22:42:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-06 22:42:37,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2022-04-06 22:42:37,229 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 47 [2022-04-06 22:42:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:37,229 INFO L478 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2022-04-06 22:42:37,229 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 22:42:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2022-04-06 22:42:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 22:42:37,230 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:37,230 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:37,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:37,439 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 [2022-04-06 22:42:37,439 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:37,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1952108775, now seen corresponding path program 1 times [2022-04-06 22:42:37,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:37,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1827898923] [2022-04-06 22:42:37,440 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:37,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1952108775, now seen corresponding path program 2 times [2022-04-06 22:42:37,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:37,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898585564] [2022-04-06 22:42:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:37,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:37,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:37,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749612881] [2022-04-06 22:42:37,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:37,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:37,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:37,457 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) [2022-04-06 22:42:37,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 22:42:37,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:42:37,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:37,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 22:42:37,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 22:42:37,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 22:42:37,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:37,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898585564] [2022-04-06 22:42:37,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:37,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749612881] [2022-04-06 22:42:37,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749612881] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:37,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:37,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 22:42:37,585 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:37,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1827898923] [2022-04-06 22:42:37,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1827898923] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:37,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:37,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 22:42:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022616207] [2022-04-06 22:42:37,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:37,586 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 22:42:37,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:37,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 22:42:37,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 22:42:37,587 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 22:42:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:37,632 INFO L93 Difference]: Finished difference Result 158 states and 221 transitions. [2022-04-06 22:42:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 22:42:37,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2022-04-06 22:42:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:37,635 INFO L225 Difference]: With dead ends: 158 [2022-04-06 22:42:37,635 INFO L226 Difference]: Without dead ends: 156 [2022-04-06 22:42:37,635 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 22:42:37,636 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:37,636 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 156 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 22:42:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-04-06 22:42:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 140. [2022-04-06 22:42:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 74 states have (on average 1.162162162162162) internal successors, (86), 81 states have internal predecessors, (86), 55 states have call successors, (55), 11 states have call predecessors, (55), 10 states have return successors, (53), 47 states have call predecessors, (53), 53 states have call successors, (53) [2022-04-06 22:42:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2022-04-06 22:42:37,658 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 52 [2022-04-06 22:42:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:37,659 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2022-04-06 22:42:37,659 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 22:42:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2022-04-06 22:42:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 22:42:37,661 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:37,661 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:37,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:37,879 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 [2022-04-06 22:42:37,879 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:37,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash 188363668, now seen corresponding path program 1 times [2022-04-06 22:42:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:37,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [482259206] [2022-04-06 22:42:37,880 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash 188363668, now seen corresponding path program 2 times [2022-04-06 22:42:37,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:37,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994796076] [2022-04-06 22:42:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:37,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:37,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:37,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364404418] [2022-04-06 22:42:37,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:37,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:37,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:37,903 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) [2022-04-06 22:42:37,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 22:42:37,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:42:37,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:37,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 57 conjunts are in the unsatisfiable core [2022-04-06 22:42:37,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 22:42:38,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 22:42:39,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:39,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994796076] [2022-04-06 22:42:39,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:39,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364404418] [2022-04-06 22:42:39,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364404418] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:42:39,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:42:39,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2022-04-06 22:42:39,096 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:39,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [482259206] [2022-04-06 22:42:39,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [482259206] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:39,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:39,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 22:42:39,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741893853] [2022-04-06 22:42:39,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:39,097 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 22:42:39,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:39,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 22:42:39,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-04-06 22:42:39,097 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 22:42:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:39,475 INFO L93 Difference]: Finished difference Result 200 states and 283 transitions. [2022-04-06 22:42:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 22:42:39,475 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 64 [2022-04-06 22:42:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:39,478 INFO L225 Difference]: With dead ends: 200 [2022-04-06 22:42:39,478 INFO L226 Difference]: Without dead ends: 197 [2022-04-06 22:42:39,478 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-04-06 22:42:39,479 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 48 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:39,479 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 308 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 22:42:39,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-04-06 22:42:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 193. [2022-04-06 22:42:39,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 110 states have internal predecessors, (119), 79 states have call successors, (79), 13 states have call predecessors, (79), 12 states have return successors, (77), 69 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 22:42:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 275 transitions. [2022-04-06 22:42:39,500 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 275 transitions. Word has length 64 [2022-04-06 22:42:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:39,501 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 275 transitions. [2022-04-06 22:42:39,501 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 22:42:39,501 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 275 transitions. [2022-04-06 22:42:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 22:42:39,501 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:39,502 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:39,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:39,715 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-06 22:42:39,716 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:39,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:39,716 INFO L85 PathProgramCache]: Analyzing trace with hash -368004398, now seen corresponding path program 3 times [2022-04-06 22:42:39,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:39,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1489329016] [2022-04-06 22:42:39,716 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:39,716 INFO L85 PathProgramCache]: Analyzing trace with hash -368004398, now seen corresponding path program 4 times [2022-04-06 22:42:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:39,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420911543] [2022-04-06 22:42:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:39,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:39,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898978366] [2022-04-06 22:42:39,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 22:42:39,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:39,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:39,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:42:39,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 22:42:39,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 22:42:39,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:39,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 22:42:39,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 22:42:39,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 22:42:39,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:39,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420911543] [2022-04-06 22:42:39,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:39,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898978366] [2022-04-06 22:42:39,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898978366] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:42:39,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:42:39,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-04-06 22:42:39,958 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:39,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1489329016] [2022-04-06 22:42:39,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1489329016] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:39,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:39,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 22:42:39,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128016167] [2022-04-06 22:42:39,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:39,959 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 22:42:39,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:39,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 22:42:39,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-04-06 22:42:39,960 INFO L87 Difference]: Start difference. First operand 193 states and 275 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 22:42:40,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:40,255 INFO L93 Difference]: Finished difference Result 288 states and 424 transitions. [2022-04-06 22:42:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 22:42:40,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2022-04-06 22:42:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:40,260 INFO L225 Difference]: With dead ends: 288 [2022-04-06 22:42:40,260 INFO L226 Difference]: Without dead ends: 281 [2022-04-06 22:42:40,260 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-04-06 22:42:40,261 INFO L913 BasicCegarLoop]: 87 mSDtfsCounter, 48 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:40,262 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 318 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 22:42:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-04-06 22:42:40,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 208. [2022-04-06 22:42:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 116 states have (on average 1.206896551724138) internal successors, (140), 122 states have internal predecessors, (140), 79 states have call successors, (79), 13 states have call predecessors, (79), 12 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 22:42:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 296 transitions. [2022-04-06 22:42:40,295 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 296 transitions. Word has length 69 [2022-04-06 22:42:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:40,295 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 296 transitions. [2022-04-06 22:42:40,296 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 22:42:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 296 transitions. [2022-04-06 22:42:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 22:42:40,296 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:40,296 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:40,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:40,513 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-06 22:42:40,514 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:40,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash -298771846, now seen corresponding path program 1 times [2022-04-06 22:42:40,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:40,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [67246530] [2022-04-06 22:42:40,514 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash -298771846, now seen corresponding path program 2 times [2022-04-06 22:42:40,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:40,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751171897] [2022-04-06 22:42:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:40,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:40,522 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:40,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11532521] [2022-04-06 22:42:40,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:40,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:40,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:40,523 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:42:40,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 22:42:40,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:42:40,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:40,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 22:42:40,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-04-06 22:42:40,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-04-06 22:42:41,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:41,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751171897] [2022-04-06 22:42:41,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:41,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11532521] [2022-04-06 22:42:41,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11532521] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 22:42:41,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 22:42:41,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 14 [2022-04-06 22:42:41,102 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:41,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [67246530] [2022-04-06 22:42:41,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [67246530] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:41,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:41,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 22:42:41,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532899666] [2022-04-06 22:42:41,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:41,103 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 22:42:41,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:41,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 22:42:41,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-04-06 22:42:41,104 INFO L87 Difference]: Start difference. First operand 208 states and 296 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-06 22:42:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:41,163 INFO L93 Difference]: Finished difference Result 214 states and 301 transitions. [2022-04-06 22:42:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 22:42:41,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2022-04-06 22:42:41,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:41,165 INFO L225 Difference]: With dead ends: 214 [2022-04-06 22:42:41,165 INFO L226 Difference]: Without dead ends: 212 [2022-04-06 22:42:41,165 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-04-06 22:42:41,165 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:41,166 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 139 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 22:42:41,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-04-06 22:42:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-04-06 22:42:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 125 states have internal predecessors, (143), 79 states have call successors, (79), 14 states have call predecessors, (79), 13 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 22:42:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 299 transitions. [2022-04-06 22:42:41,191 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 299 transitions. Word has length 74 [2022-04-06 22:42:41,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:41,191 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 299 transitions. [2022-04-06 22:42:41,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-06 22:42:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 299 transitions. [2022-04-06 22:42:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 22:42:41,194 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:41,194 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:41,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:41,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-06 22:42:41,407 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:41,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2089538094, now seen corresponding path program 1 times [2022-04-06 22:42:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:41,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1502341575] [2022-04-06 22:42:41,408 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2089538094, now seen corresponding path program 2 times [2022-04-06 22:42:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:41,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095087670] [2022-04-06 22:42:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:41,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:41,434 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:41,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563173555] [2022-04-06 22:42:41,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:41,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:41,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:41,450 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:42:41,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 22:42:41,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:42:41,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:41,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 22:42:41,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-04-06 22:42:41,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-04-06 22:42:41,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:41,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095087670] [2022-04-06 22:42:41,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:41,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563173555] [2022-04-06 22:42:41,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563173555] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:42:41,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:42:41,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-04-06 22:42:41,770 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:41,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1502341575] [2022-04-06 22:42:41,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1502341575] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:41,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:41,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 22:42:41,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748298960] [2022-04-06 22:42:41,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:41,771 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 22:42:41,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:41,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 22:42:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-06 22:42:41,771 INFO L87 Difference]: Start difference. First operand 212 states and 299 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 22:42:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:42,003 INFO L93 Difference]: Finished difference Result 306 states and 427 transitions. [2022-04-06 22:42:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 22:42:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 72 [2022-04-06 22:42:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:42,005 INFO L225 Difference]: With dead ends: 306 [2022-04-06 22:42:42,005 INFO L226 Difference]: Without dead ends: 204 [2022-04-06 22:42:42,006 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-04-06 22:42:42,006 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:42,007 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 253 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 22:42:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-04-06 22:42:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2022-04-06 22:42:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 113 states have internal predecessors, (125), 79 states have call successors, (79), 14 states have call predecessors, (79), 13 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 22:42:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 281 transitions. [2022-04-06 22:42:42,031 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 281 transitions. Word has length 72 [2022-04-06 22:42:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:42,031 INFO L478 AbstractCegarLoop]: Abstraction has 200 states and 281 transitions. [2022-04-06 22:42:42,031 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 22:42:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 281 transitions. [2022-04-06 22:42:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-06 22:42:42,032 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:42,032 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:42,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:42,247 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-06 22:42:42,247 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1679616651, now seen corresponding path program 1 times [2022-04-06 22:42:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:42,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1028247929] [2022-04-06 22:42:42,248 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1679616651, now seen corresponding path program 2 times [2022-04-06 22:42:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:42,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831987898] [2022-04-06 22:42:42,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:42,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:42,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:42,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214897136] [2022-04-06 22:42:42,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:42:42,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:42,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:42,257 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:42:42,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-06 22:42:42,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:42:42,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:42,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 63 conjunts are in the unsatisfiable core [2022-04-06 22:42:42,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-04-06 22:42:43,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-04-06 22:42:48,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:48,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831987898] [2022-04-06 22:42:48,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:48,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214897136] [2022-04-06 22:42:48,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214897136] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:42:48,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:42:48,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 27 [2022-04-06 22:42:48,426 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:48,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1028247929] [2022-04-06 22:42:48,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1028247929] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:48,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:48,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 22:42:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437390242] [2022-04-06 22:42:48,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:48,426 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 22:42:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 22:42:48,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-04-06 22:42:48,427 INFO L87 Difference]: Start difference. First operand 200 states and 281 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 22:42:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:49,146 INFO L93 Difference]: Finished difference Result 285 states and 397 transitions. [2022-04-06 22:42:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 22:42:49,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-04-06 22:42:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:49,148 INFO L225 Difference]: With dead ends: 285 [2022-04-06 22:42:49,148 INFO L226 Difference]: Without dead ends: 231 [2022-04-06 22:42:49,149 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2022-04-06 22:42:49,149 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 59 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:49,149 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 225 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 22:42:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-04-06 22:42:49,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2022-04-06 22:42:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 121 states have (on average 1.165289256198347) internal successors, (141), 128 states have internal predecessors, (141), 91 states have call successors, (91), 16 states have call predecessors, (91), 15 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2022-04-06 22:42:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 321 transitions. [2022-04-06 22:42:49,180 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 321 transitions. Word has length 86 [2022-04-06 22:42:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:49,181 INFO L478 AbstractCegarLoop]: Abstraction has 228 states and 321 transitions. [2022-04-06 22:42:49,181 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 22:42:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 321 transitions. [2022-04-06 22:42:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-06 22:42:49,181 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:49,181 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:49,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:49,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-06 22:42:49,400 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:49,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:49,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1654964248, now seen corresponding path program 5 times [2022-04-06 22:42:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:49,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [356730331] [2022-04-06 22:42:49,401 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1654964248, now seen corresponding path program 6 times [2022-04-06 22:42:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:49,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462322209] [2022-04-06 22:42:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:49,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:49,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964369610] [2022-04-06 22:42:49,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 22:42:49,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:49,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:49,409 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:42:49,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-06 22:42:49,460 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 22:42:49,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:49,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 22:42:49,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-04-06 22:42:49,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-04-06 22:42:49,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:49,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462322209] [2022-04-06 22:42:49,691 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:49,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964369610] [2022-04-06 22:42:49,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964369610] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:42:49,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:42:49,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-06 22:42:49,691 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:49,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [356730331] [2022-04-06 22:42:49,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [356730331] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:49,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:49,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 22:42:49,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78613412] [2022-04-06 22:42:49,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:49,692 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 22:42:49,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 22:42:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-06 22:42:49,692 INFO L87 Difference]: Start difference. First operand 228 states and 321 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 22:42:49,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:49,807 INFO L93 Difference]: Finished difference Result 361 states and 505 transitions. [2022-04-06 22:42:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 22:42:49,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2022-04-06 22:42:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:49,809 INFO L225 Difference]: With dead ends: 361 [2022-04-06 22:42:49,809 INFO L226 Difference]: Without dead ends: 238 [2022-04-06 22:42:49,810 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-06 22:42:49,810 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:49,810 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 260 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 22:42:49,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-04-06 22:42:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2022-04-06 22:42:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 127 states have internal predecessors, (149), 83 states have call successors, (83), 16 states have call predecessors, (83), 15 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-04-06 22:42:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 313 transitions. [2022-04-06 22:42:49,839 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 313 transitions. Word has length 89 [2022-04-06 22:42:49,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:49,840 INFO L478 AbstractCegarLoop]: Abstraction has 225 states and 313 transitions. [2022-04-06 22:42:49,840 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 22:42:49,840 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 313 transitions. [2022-04-06 22:42:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-04-06 22:42:49,840 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:49,841 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:49,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-06 22:42:50,054 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-06 22:42:50,054 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:42:50,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:42:50,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1455197645, now seen corresponding path program 3 times [2022-04-06 22:42:50,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:50,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1821072000] [2022-04-06 22:42:50,055 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:42:50,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1455197645, now seen corresponding path program 4 times [2022-04-06 22:42:50,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:42:50,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598243846] [2022-04-06 22:42:50,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:42:50,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:42:50,061 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:42:50,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638430799] [2022-04-06 22:42:50,061 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 22:42:50,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:42:50,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:42:50,062 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:42:50,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-06 22:42:50,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 22:42:50,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:42:50,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 88 conjunts are in the unsatisfiable core [2022-04-06 22:42:50,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:42:51,541 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 22:42:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 63 proven. 29 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-04-06 22:42:51,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:42:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-04-06 22:42:58,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:42:58,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598243846] [2022-04-06 22:42:58,464 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:42:58,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638430799] [2022-04-06 22:42:58,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638430799] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:42:58,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:42:58,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14] total 32 [2022-04-06 22:42:58,465 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:42:58,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1821072000] [2022-04-06 22:42:58,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1821072000] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:42:58,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:42:58,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 22:42:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119643410] [2022-04-06 22:42:58,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:42:58,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 22:42:58,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:42:58,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 22:42:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=835, Unknown=1, NotChecked=0, Total=992 [2022-04-06 22:42:58,466 INFO L87 Difference]: Start difference. First operand 225 states and 313 transitions. Second operand has 23 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 22:42:59,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:42:59,755 INFO L93 Difference]: Finished difference Result 328 states and 448 transitions. [2022-04-06 22:42:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-06 22:42:59,756 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 91 [2022-04-06 22:42:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:42:59,757 INFO L225 Difference]: With dead ends: 328 [2022-04-06 22:42:59,757 INFO L226 Difference]: Without dead ends: 270 [2022-04-06 22:42:59,758 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=229, Invalid=1330, Unknown=1, NotChecked=0, Total=1560 [2022-04-06 22:42:59,758 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 82 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 22:42:59,758 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 318 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 22:42:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-04-06 22:42:59,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 258. [2022-04-06 22:42:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 144 states have (on average 1.1805555555555556) internal successors, (170), 145 states have internal predecessors, (170), 95 states have call successors, (95), 19 states have call predecessors, (95), 18 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-04-06 22:42:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 358 transitions. [2022-04-06 22:42:59,792 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 358 transitions. Word has length 91 [2022-04-06 22:42:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:42:59,792 INFO L478 AbstractCegarLoop]: Abstraction has 258 states and 358 transitions. [2022-04-06 22:42:59,792 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 22:42:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 358 transitions. [2022-04-06 22:42:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-04-06 22:42:59,793 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:42:59,793 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:42:59,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-06 22:43:00,003 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:43:00,003 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:43:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:43:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1948981098, now seen corresponding path program 5 times [2022-04-06 22:43:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:43:00,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [837824608] [2022-04-06 22:43:00,004 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:43:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1948981098, now seen corresponding path program 6 times [2022-04-06 22:43:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:43:00,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800329522] [2022-04-06 22:43:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:43:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:43:00,024 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:43:00,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952092344] [2022-04-06 22:43:00,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 22:43:00,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:43:00,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:43:00,035 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:43:00,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-06 22:43:00,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 22:43:00,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:43:00,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 59 conjunts are in the unsatisfiable core [2022-04-06 22:43:00,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:43:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-04-06 22:43:01,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:43:01,376 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 22:44:10,445 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 22:44:37,846 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 22:46:08,691 WARN L855 $PredicateComparison]: unable to prove that (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~s~0_BEFORE_CALL_57 Int) (v_main_~x~0_BEFORE_CALL_76 Int) (v_main_~d~0_BEFORE_CALL_52 Int) (v_main_~b~0_BEFORE_CALL_84 Int) (v_main_~q~0_BEFORE_CALL_51 Int) (v_main_~y~0_BEFORE_CALL_79 Int) (v_main_~r~0_BEFORE_CALL_55 Int) (v_main_~p~0_BEFORE_CALL_55 Int) (v_main_~k~0_BEFORE_CALL_54 Int)) (let ((.cse0 (* v_main_~d~0_BEFORE_CALL_52 v_main_~b~0_BEFORE_CALL_84))) (or (= (+ (* v_main_~r~0_BEFORE_CALL_55 v_main_~y~0_BEFORE_CALL_79) (* v_main_~p~0_BEFORE_CALL_55 v_main_~x~0_BEFORE_CALL_76) v_main_~b~0_BEFORE_CALL_84) (+ (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76) (* v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~y~0_BEFORE_CALL_79 v_main_~k~0_BEFORE_CALL_54 v_main_~s~0_BEFORE_CALL_57) (* v_main_~d~0_BEFORE_CALL_52 v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76 v_main_~k~0_BEFORE_CALL_54) (* v_main_~q~0_BEFORE_CALL_51 v_main_~d~0_BEFORE_CALL_52 v_main_~x~0_BEFORE_CALL_76))) (= (mod .cse0 v_main_~b~0_BEFORE_CALL_84) 0) (<= .cse0 0) (<= v_main_~b~0_BEFORE_CALL_84 0)))))) is different from true [2022-04-06 22:47:19,009 WARN L855 $PredicateComparison]: unable to prove that (or (= c___VERIFIER_assert_~cond 0) (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~s~0_BEFORE_CALL_57 Int) (v_main_~x~0_BEFORE_CALL_76 Int) (v_main_~d~0_BEFORE_CALL_52 Int) (v_main_~b~0_BEFORE_CALL_84 Int) (v_main_~q~0_BEFORE_CALL_51 Int) (v_main_~y~0_BEFORE_CALL_79 Int) (v_main_~r~0_BEFORE_CALL_55 Int) (v_main_~p~0_BEFORE_CALL_55 Int) (v_main_~k~0_BEFORE_CALL_54 Int)) (let ((.cse0 (* v_main_~d~0_BEFORE_CALL_52 v_main_~b~0_BEFORE_CALL_84))) (or (= (+ (* v_main_~r~0_BEFORE_CALL_55 v_main_~y~0_BEFORE_CALL_79) (* v_main_~p~0_BEFORE_CALL_55 v_main_~x~0_BEFORE_CALL_76) v_main_~b~0_BEFORE_CALL_84) (+ (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76) (* v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~y~0_BEFORE_CALL_79 v_main_~k~0_BEFORE_CALL_54 v_main_~s~0_BEFORE_CALL_57) (* v_main_~d~0_BEFORE_CALL_52 v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76 v_main_~k~0_BEFORE_CALL_54) (* v_main_~q~0_BEFORE_CALL_51 v_main_~d~0_BEFORE_CALL_52 v_main_~x~0_BEFORE_CALL_76))) (= (mod .cse0 v_main_~b~0_BEFORE_CALL_84) 0) (<= .cse0 0) (<= v_main_~b~0_BEFORE_CALL_84 0))))))) is different from true [2022-04-06 22:47:55,090 WARN L855 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~s~0_BEFORE_CALL_57 Int) (v_main_~x~0_BEFORE_CALL_76 Int) (v_main_~d~0_BEFORE_CALL_52 Int) (v_main_~b~0_BEFORE_CALL_84 Int) (v_main_~q~0_BEFORE_CALL_51 Int) (v_main_~y~0_BEFORE_CALL_79 Int) (v_main_~r~0_BEFORE_CALL_55 Int) (v_main_~p~0_BEFORE_CALL_55 Int) (v_main_~k~0_BEFORE_CALL_54 Int)) (let ((.cse0 (* v_main_~d~0_BEFORE_CALL_52 v_main_~b~0_BEFORE_CALL_84))) (or (= (+ (* v_main_~r~0_BEFORE_CALL_55 v_main_~y~0_BEFORE_CALL_79) (* v_main_~p~0_BEFORE_CALL_55 v_main_~x~0_BEFORE_CALL_76) v_main_~b~0_BEFORE_CALL_84) (+ (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76) (* v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~y~0_BEFORE_CALL_79 v_main_~k~0_BEFORE_CALL_54 v_main_~s~0_BEFORE_CALL_57) (* v_main_~d~0_BEFORE_CALL_52 v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76 v_main_~k~0_BEFORE_CALL_54) (* v_main_~q~0_BEFORE_CALL_51 v_main_~d~0_BEFORE_CALL_52 v_main_~x~0_BEFORE_CALL_76))) (= (mod .cse0 v_main_~b~0_BEFORE_CALL_84) 0) (<= .cse0 0) (<= v_main_~b~0_BEFORE_CALL_84 0))))) is different from true [2022-04-06 22:47:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 71 proven. 34 refuted. 0 times theorem prover too weak. 224 trivial. 5 not checked. [2022-04-06 22:47:56,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:47:56,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800329522] [2022-04-06 22:47:56,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:47:56,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952092344] [2022-04-06 22:47:56,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952092344] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:47:56,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:47:56,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 31 [2022-04-06 22:47:56,110 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:47:56,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [837824608] [2022-04-06 22:47:56,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [837824608] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:47:56,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:47:56,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 22:47:56,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985268574] [2022-04-06 22:47:56,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:47:56,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 22:47:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:47:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 22:47:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=640, Unknown=3, NotChecked=162, Total=930 [2022-04-06 22:47:56,111 INFO L87 Difference]: Start difference. First operand 258 states and 358 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 22:47:57,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:47:57,074 INFO L93 Difference]: Finished difference Result 330 states and 459 transitions. [2022-04-06 22:47:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 22:47:57,075 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2022-04-06 22:47:57,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:47:57,078 INFO L225 Difference]: With dead ends: 330 [2022-04-06 22:47:57,078 INFO L226 Difference]: Without dead ends: 327 [2022-04-06 22:47:57,078 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=237, Invalid=1178, Unknown=3, NotChecked=222, Total=1640 [2022-04-06 22:47:57,079 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 64 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 22:47:57,079 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 285 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 22:47:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-04-06 22:47:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2022-04-06 22:47:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 176 states have (on average 1.1875) internal successors, (209), 177 states have internal predecessors, (209), 119 states have call successors, (119), 22 states have call predecessors, (119), 21 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-04-06 22:47:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 445 transitions. [2022-04-06 22:47:57,138 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 445 transitions. Word has length 108 [2022-04-06 22:47:57,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:47:57,139 INFO L478 AbstractCegarLoop]: Abstraction has 317 states and 445 transitions. [2022-04-06 22:47:57,139 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 22:47:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 445 transitions. [2022-04-06 22:47:57,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-04-06 22:47:57,141 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:47:57,142 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:47:57,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-06 22:47:57,355 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-06 22:47:57,355 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:47:57,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:47:57,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1002671399, now seen corresponding path program 7 times [2022-04-06 22:47:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:47:57,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1600595334] [2022-04-06 22:47:57,356 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:47:57,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1002671399, now seen corresponding path program 8 times [2022-04-06 22:47:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:47:57,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701185612] [2022-04-06 22:47:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:47:57,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:47:57,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:47:57,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386620705] [2022-04-06 22:47:57,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:47:57,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:47:57,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:47:57,368 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:47:57,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-06 22:47:57,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:47:57,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:47:57,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 22:47:57,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:47:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 165 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-04-06 22:47:57,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:47:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-04-06 22:47:57,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:47:57,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701185612] [2022-04-06 22:47:57,982 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:47:57,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386620705] [2022-04-06 22:47:57,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386620705] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:47:57,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:47:57,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-04-06 22:47:57,982 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:47:57,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1600595334] [2022-04-06 22:47:57,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1600595334] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:47:57,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:47:57,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 22:47:57,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854026165] [2022-04-06 22:47:57,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:47:57,983 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 22:47:57,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:47:57,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 22:47:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-04-06 22:47:57,984 INFO L87 Difference]: Start difference. First operand 317 states and 445 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:47:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:47:58,260 INFO L93 Difference]: Finished difference Result 387 states and 528 transitions. [2022-04-06 22:47:58,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 22:47:58,261 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 111 [2022-04-06 22:47:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:47:58,262 INFO L225 Difference]: With dead ends: 387 [2022-04-06 22:47:58,263 INFO L226 Difference]: Without dead ends: 271 [2022-04-06 22:47:58,263 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-04-06 22:47:58,264 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 48 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 22:47:58,264 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 193 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 22:47:58,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-04-06 22:47:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 232. [2022-04-06 22:47:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 133 states have (on average 1.150375939849624) internal successors, (153), 134 states have internal predecessors, (153), 79 states have call successors, (79), 20 states have call predecessors, (79), 19 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 22:47:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2022-04-06 22:47:58,301 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 111 [2022-04-06 22:47:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:47:58,303 INFO L478 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2022-04-06 22:47:58,303 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:47:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2022-04-06 22:47:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-04-06 22:47:58,304 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:47:58,304 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:47:58,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-06 22:47:58,519 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-06 22:47:58,519 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:47:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:47:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash 890766036, now seen corresponding path program 9 times [2022-04-06 22:47:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:47:58,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [567716412] [2022-04-06 22:47:58,520 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:47:58,521 INFO L85 PathProgramCache]: Analyzing trace with hash 890766036, now seen corresponding path program 10 times [2022-04-06 22:47:58,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:47:58,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397080482] [2022-04-06 22:47:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:47:58,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:47:58,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:47:58,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750277950] [2022-04-06 22:47:58,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 22:47:58,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:47:58,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:47:58,538 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:47:58,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-06 22:47:58,583 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 22:47:58,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:47:58,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 22:47:58,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:47:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-04-06 22:47:58,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:48:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:48:02,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397080482] [2022-04-06 22:48:02,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:48:02,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750277950] [2022-04-06 22:48:02,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750277950] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 22:48:02,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 22:48:02,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-04-06 22:48:02,014 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:48:02,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [567716412] [2022-04-06 22:48:02,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [567716412] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:48:02,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:48:02,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 22:48:02,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342912384] [2022-04-06 22:48:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:48:02,015 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 22:48:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 22:48:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-04-06 22:48:02,015 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:48:02,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:48:02,622 INFO L93 Difference]: Finished difference Result 349 states and 486 transitions. [2022-04-06 22:48:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 22:48:02,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 113 [2022-04-06 22:48:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:48:02,624 INFO L225 Difference]: With dead ends: 349 [2022-04-06 22:48:02,624 INFO L226 Difference]: Without dead ends: 295 [2022-04-06 22:48:02,624 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2022-04-06 22:48:02,625 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 44 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 22:48:02,625 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 345 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 22:48:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-04-06 22:48:02,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 253. [2022-04-06 22:48:02,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 146 states have (on average 1.1506849315068493) internal successors, (168), 147 states have internal predecessors, (168), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-06 22:48:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 340 transitions. [2022-04-06 22:48:02,667 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 340 transitions. Word has length 113 [2022-04-06 22:48:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:48:02,667 INFO L478 AbstractCegarLoop]: Abstraction has 253 states and 340 transitions. [2022-04-06 22:48:02,667 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:48:02,667 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 340 transitions. [2022-04-06 22:48:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 22:48:02,668 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:48:02,668 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:48:02,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-06 22:48:02,879 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-06 22:48:02,880 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:48:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:48:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1938711081, now seen corresponding path program 11 times [2022-04-06 22:48:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:02,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [838862052] [2022-04-06 22:48:02,880 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:48:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1938711081, now seen corresponding path program 12 times [2022-04-06 22:48:02,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:48:02,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580592428] [2022-04-06 22:48:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:48:02,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:48:02,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:48:02,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258826447] [2022-04-06 22:48:02,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 22:48:02,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:02,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:48:02,889 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:48:02,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-06 22:48:02,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 22:48:02,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:48:02,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-06 22:48:02,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:48:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 33 proven. 32 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-04-06 22:48:03,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:48:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 53 proven. 12 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-04-06 22:48:03,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:48:03,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580592428] [2022-04-06 22:48:03,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:48:03,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258826447] [2022-04-06 22:48:03,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258826447] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:48:03,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:48:03,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2022-04-06 22:48:03,503 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:48:03,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [838862052] [2022-04-06 22:48:03,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [838862052] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:48:03,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:48:03,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 22:48:03,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820093465] [2022-04-06 22:48:03,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:48:03,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 22:48:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 22:48:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-04-06 22:48:03,504 INFO L87 Difference]: Start difference. First operand 253 states and 340 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 22:48:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:48:03,975 INFO L93 Difference]: Finished difference Result 317 states and 438 transitions. [2022-04-06 22:48:03,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 22:48:03,975 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-04-06 22:48:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:48:03,979 INFO L225 Difference]: With dead ends: 317 [2022-04-06 22:48:03,979 INFO L226 Difference]: Without dead ends: 310 [2022-04-06 22:48:03,980 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=913, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 22:48:03,980 INFO L913 BasicCegarLoop]: 81 mSDtfsCounter, 55 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 22:48:03,981 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 354 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 22:48:03,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-04-06 22:48:04,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 259. [2022-04-06 22:48:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 152 states have (on average 1.1513157894736843) internal successors, (175), 153 states have internal predecessors, (175), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-06 22:48:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 347 transitions. [2022-04-06 22:48:04,034 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 347 transitions. Word has length 116 [2022-04-06 22:48:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:48:04,034 INFO L478 AbstractCegarLoop]: Abstraction has 259 states and 347 transitions. [2022-04-06 22:48:04,034 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 22:48:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 347 transitions. [2022-04-06 22:48:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 22:48:04,035 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:48:04,035 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:48:04,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-06 22:48:04,244 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:04,244 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:48:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:48:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1687072417, now seen corresponding path program 13 times [2022-04-06 22:48:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:04,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1608197608] [2022-04-06 22:48:04,245 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:48:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1687072417, now seen corresponding path program 14 times [2022-04-06 22:48:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:48:04,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743944172] [2022-04-06 22:48:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:48:04,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:48:04,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:48:04,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984124353] [2022-04-06 22:48:04,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:48:04,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:04,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:48:04,252 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:48:04,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-06 22:48:04,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:48:04,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:48:04,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 22:48:04,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:48:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 39 proven. 32 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-04-06 22:48:04,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:48:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-04-06 22:48:05,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:48:05,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743944172] [2022-04-06 22:48:05,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:48:05,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984124353] [2022-04-06 22:48:05,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984124353] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:48:05,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:48:05,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-04-06 22:48:05,083 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:48:05,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1608197608] [2022-04-06 22:48:05,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1608197608] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:48:05,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:48:05,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 22:48:05,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046767749] [2022-04-06 22:48:05,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:48:05,083 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 22:48:05,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:05,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 22:48:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-04-06 22:48:05,084 INFO L87 Difference]: Start difference. First operand 259 states and 347 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:48:05,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:48:05,502 INFO L93 Difference]: Finished difference Result 376 states and 511 transitions. [2022-04-06 22:48:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 22:48:05,502 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 116 [2022-04-06 22:48:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:48:05,503 INFO L225 Difference]: With dead ends: 376 [2022-04-06 22:48:05,503 INFO L226 Difference]: Without dead ends: 259 [2022-04-06 22:48:05,504 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2022-04-06 22:48:05,504 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 52 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 22:48:05,505 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 316 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 22:48:05,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-04-06 22:48:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-04-06 22:48:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 152 states have (on average 1.144736842105263) internal successors, (174), 153 states have internal predecessors, (174), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-06 22:48:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 346 transitions. [2022-04-06 22:48:05,552 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 346 transitions. Word has length 116 [2022-04-06 22:48:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:48:05,552 INFO L478 AbstractCegarLoop]: Abstraction has 259 states and 346 transitions. [2022-04-06 22:48:05,552 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:48:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 346 transitions. [2022-04-06 22:48:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-04-06 22:48:05,553 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:48:05,553 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:48:05,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-06 22:48:05,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:05,767 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:48:05,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:48:05,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2089528091, now seen corresponding path program 1 times [2022-04-06 22:48:05,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:05,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1704725038] [2022-04-06 22:48:05,768 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:48:05,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2089528091, now seen corresponding path program 2 times [2022-04-06 22:48:05,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:48:05,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888964567] [2022-04-06 22:48:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:48:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:48:05,774 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:48:05,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807823760] [2022-04-06 22:48:05,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 22:48:05,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:05,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:48:05,775 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:48:05,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-06 22:48:05,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 22:48:05,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:48:05,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 22:48:05,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:48:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 183 proven. 18 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-04-06 22:48:06,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:48:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-04-06 22:48:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:48:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888964567] [2022-04-06 22:48:06,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:48:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807823760] [2022-04-06 22:48:06,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807823760] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:48:06,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:48:06,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-04-06 22:48:06,365 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:48:06,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1704725038] [2022-04-06 22:48:06,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1704725038] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:48:06,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:48:06,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 22:48:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188986479] [2022-04-06 22:48:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:48:06,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 22:48:06,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 22:48:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-04-06 22:48:06,366 INFO L87 Difference]: Start difference. First operand 259 states and 346 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:48:06,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:48:06,673 INFO L93 Difference]: Finished difference Result 318 states and 413 transitions. [2022-04-06 22:48:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 22:48:06,673 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 119 [2022-04-06 22:48:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:48:06,675 INFO L225 Difference]: With dead ends: 318 [2022-04-06 22:48:06,675 INFO L226 Difference]: Without dead ends: 141 [2022-04-06 22:48:06,677 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2022-04-06 22:48:06,677 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 37 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 22:48:06,678 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 249 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 22:48:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-04-06 22:48:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-04-06 22:48:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 88 states have internal predecessors, (91), 39 states have call successors, (39), 15 states have call predecessors, (39), 14 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 22:48:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2022-04-06 22:48:06,698 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 119 [2022-04-06 22:48:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:48:06,698 INFO L478 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2022-04-06 22:48:06,698 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:48:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2022-04-06 22:48:06,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-04-06 22:48:06,699 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:48:06,699 INFO L499 BasicCegarLoop]: trace histogram [21, 20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:48:06,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-06 22:48:06,915 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-04-06 22:48:06,915 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:48:06,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:48:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2097211745, now seen corresponding path program 15 times [2022-04-06 22:48:06,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:06,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [81657174] [2022-04-06 22:48:06,916 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:48:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2097211745, now seen corresponding path program 16 times [2022-04-06 22:48:06,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:48:06,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110348693] [2022-04-06 22:48:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:48:06,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:48:06,923 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:48:06,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103005984] [2022-04-06 22:48:06,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 22:48:06,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:06,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:48:06,924 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:48:06,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-06 22:48:06,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 22:48:06,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:48:06,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 22:48:06,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:48:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 53 proven. 76 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2022-04-06 22:48:08,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:48:10,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:48:10,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110348693] [2022-04-06 22:48:10,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:48:10,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103005984] [2022-04-06 22:48:10,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103005984] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 22:48:10,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 22:48:10,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-04-06 22:48:10,299 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:48:10,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [81657174] [2022-04-06 22:48:10,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [81657174] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:48:10,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:48:10,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 22:48:10,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572331540] [2022-04-06 22:48:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:48:10,299 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 22:48:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 22:48:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=748, Unknown=1, NotChecked=0, Total=870 [2022-04-06 22:48:10,300 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 8 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-04-06 22:48:12,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:48:12,496 INFO L93 Difference]: Finished difference Result 218 states and 267 transitions. [2022-04-06 22:48:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 22:48:12,499 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 8 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 160 [2022-04-06 22:48:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:48:12,500 INFO L225 Difference]: With dead ends: 218 [2022-04-06 22:48:12,500 INFO L226 Difference]: Without dead ends: 147 [2022-04-06 22:48:12,502 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=237, Invalid=1322, Unknown=1, NotChecked=0, Total=1560 [2022-04-06 22:48:12,502 INFO L913 BasicCegarLoop]: 79 mSDtfsCounter, 52 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 22:48:12,502 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 529 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 322 Invalid, 0 Unknown, 305 Unchecked, 0.5s Time] [2022-04-06 22:48:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-04-06 22:48:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-04-06 22:48:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 90 states have internal predecessors, (93), 43 states have call successors, (43), 15 states have call predecessors, (43), 14 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-06 22:48:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 177 transitions. [2022-04-06 22:48:12,525 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 177 transitions. Word has length 160 [2022-04-06 22:48:12,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:48:12,525 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 177 transitions. [2022-04-06 22:48:12,526 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 8 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-04-06 22:48:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 177 transitions. [2022-04-06 22:48:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-04-06 22:48:12,527 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:48:12,527 INFO L499 BasicCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:48:12,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-06 22:48:12,735 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-04-06 22:48:12,735 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:48:12,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:48:12,736 INFO L85 PathProgramCache]: Analyzing trace with hash 576880450, now seen corresponding path program 17 times [2022-04-06 22:48:12,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:12,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [522555563] [2022-04-06 22:48:12,736 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:48:12,736 INFO L85 PathProgramCache]: Analyzing trace with hash 576880450, now seen corresponding path program 18 times [2022-04-06 22:48:12,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:48:12,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529931895] [2022-04-06 22:48:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:48:12,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:48:12,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:48:12,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127501294] [2022-04-06 22:48:12,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 22:48:12,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:12,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:48:12,744 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:48:12,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-06 22:48:12,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 22:48:12,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:48:12,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 22:48:12,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:48:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2022-04-06 22:48:13,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:48:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 122 proven. 19 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2022-04-06 22:48:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:48:13,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529931895] [2022-04-06 22:48:13,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:48:13,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127501294] [2022-04-06 22:48:13,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127501294] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:48:13,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:48:13,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-04-06 22:48:13,424 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:48:13,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [522555563] [2022-04-06 22:48:13,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [522555563] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:48:13,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:48:13,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 22:48:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323551247] [2022-04-06 22:48:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:48:13,424 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 22:48:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 22:48:13,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-04-06 22:48:13,425 INFO L87 Difference]: Start difference. First operand 147 states and 177 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:48:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:48:13,724 INFO L93 Difference]: Finished difference Result 153 states and 182 transitions. [2022-04-06 22:48:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 22:48:13,725 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 182 [2022-04-06 22:48:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:48:13,725 INFO L225 Difference]: With dead ends: 153 [2022-04-06 22:48:13,725 INFO L226 Difference]: Without dead ends: 146 [2022-04-06 22:48:13,726 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2022-04-06 22:48:13,726 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 39 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 22:48:13,726 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 272 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 22:48:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-04-06 22:48:13,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2022-04-06 22:48:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 42 states have call successors, (42), 15 states have call predecessors, (42), 14 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-06 22:48:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2022-04-06 22:48:13,746 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 182 [2022-04-06 22:48:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:48:13,747 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2022-04-06 22:48:13,747 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 22:48:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2022-04-06 22:48:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-04-06 22:48:13,751 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:48:13,751 INFO L499 BasicCegarLoop]: trace histogram [25, 24, 24, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:48:13,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-04-06 22:48:13,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:13,967 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:48:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:48:13,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2054277986, now seen corresponding path program 3 times [2022-04-06 22:48:13,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:13,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [769505869] [2022-04-06 22:48:13,968 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:48:13,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2054277986, now seen corresponding path program 4 times [2022-04-06 22:48:13,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:48:13,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511889313] [2022-04-06 22:48:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:48:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:48:13,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:48:13,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753786800] [2022-04-06 22:48:13,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 22:48:13,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:13,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:48:13,983 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:48:13,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-06 22:48:14,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 22:48:14,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:48:14,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-06 22:48:14,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:48:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 81 proven. 106 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2022-04-06 22:48:15,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:48:17,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:48:17,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511889313] [2022-04-06 22:48:17,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:48:17,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753786800] [2022-04-06 22:48:17,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753786800] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 22:48:17,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 22:48:17,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-04-06 22:48:17,134 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:48:17,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [769505869] [2022-04-06 22:48:17,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [769505869] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:48:17,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:48:17,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 22:48:17,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926485292] [2022-04-06 22:48:17,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:48:17,134 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 22:48:17,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:17,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 22:48:17,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2022-04-06 22:48:17,135 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-04-06 22:48:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:48:18,044 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2022-04-06 22:48:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 22:48:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 185 [2022-04-06 22:48:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:48:18,046 INFO L225 Difference]: With dead ends: 213 [2022-04-06 22:48:18,046 INFO L226 Difference]: Without dead ends: 146 [2022-04-06 22:48:18,047 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=280, Invalid=1526, Unknown=0, NotChecked=0, Total=1806 [2022-04-06 22:48:18,047 INFO L913 BasicCegarLoop]: 81 mSDtfsCounter, 56 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 22:48:18,047 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 526 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 349 Invalid, 0 Unknown, 221 Unchecked, 0.6s Time] [2022-04-06 22:48:18,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-04-06 22:48:18,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-04-06 22:48:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-06 22:48:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2022-04-06 22:48:18,071 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 185 [2022-04-06 22:48:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:48:18,071 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2022-04-06 22:48:18,071 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-04-06 22:48:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2022-04-06 22:48:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-04-06 22:48:18,072 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 22:48:18,072 INFO L499 BasicCegarLoop]: trace histogram [29, 28, 28, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 22:48:18,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-04-06 22:48:18,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:18,287 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 22:48:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 22:48:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash 294904993, now seen corresponding path program 5 times [2022-04-06 22:48:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:18,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [334363953] [2022-04-06 22:48:18,288 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 22:48:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash 294904993, now seen corresponding path program 6 times [2022-04-06 22:48:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 22:48:18,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949625016] [2022-04-06 22:48:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 22:48:18,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 22:48:18,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 22:48:18,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821990248] [2022-04-06 22:48:18,297 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 22:48:18,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 22:48:18,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 22:48:18,298 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 22:48:18,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-06 22:48:18,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 22:48:18,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 22:48:18,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 22:48:18,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 22:48:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 144 proven. 53 refuted. 0 times theorem prover too weak. 1563 trivial. 0 not checked. [2022-04-06 22:48:18,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 22:48:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 107 proven. 90 refuted. 0 times theorem prover too weak. 1563 trivial. 0 not checked. [2022-04-06 22:48:19,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 22:48:19,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949625016] [2022-04-06 22:48:19,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 22:48:19,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821990248] [2022-04-06 22:48:19,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821990248] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 22:48:19,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 22:48:19,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-04-06 22:48:19,274 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 22:48:19,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [334363953] [2022-04-06 22:48:19,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [334363953] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 22:48:19,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 22:48:19,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 22:48:19,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309083496] [2022-04-06 22:48:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 22:48:19,275 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 22:48:19,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 22:48:19,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 22:48:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2022-04-06 22:48:19,276 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-04-06 22:48:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 22:48:19,680 INFO L93 Difference]: Finished difference Result 158 states and 188 transitions. [2022-04-06 22:48:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 22:48:19,685 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 207 [2022-04-06 22:48:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 22:48:19,685 INFO L225 Difference]: With dead ends: 158 [2022-04-06 22:48:19,686 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 22:48:19,686 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=1085, Unknown=0, NotChecked=0, Total=1332 [2022-04-06 22:48:19,687 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 38 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 22:48:19,687 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 228 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 22:48:19,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 22:48:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 22:48:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 22:48:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 22:48:19,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2022-04-06 22:48:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 22:48:19,688 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 22:48:19,688 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-04-06 22:48:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 22:48:19,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 22:48:19,690 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 22:48:19,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-04-06 22:48:19,890 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-04-06 22:48:19,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 22:48:47,212 WARN L232 SmtUtils]: Spent 23.30s on a formula simplification. DAG size of input: 171 DAG size of output: 171 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-04-06 22:49:03,102 WARN L232 SmtUtils]: Spent 14.61s on a formula simplification. DAG size of input: 197 DAG size of output: 107 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 22:49:16,922 WARN L232 SmtUtils]: Spent 12.41s on a formula simplification. DAG size of input: 197 DAG size of output: 107 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 22:49:34,708 WARN L232 SmtUtils]: Spent 15.52s on a formula simplification. DAG size of input: 206 DAG size of output: 83 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 22:49:46,879 WARN L232 SmtUtils]: Spent 12.17s on a formula simplification. DAG size of input: 197 DAG size of output: 103 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 22:50:03,974 WARN L232 SmtUtils]: Spent 14.31s on a formula simplification. DAG size of input: 197 DAG size of output: 103 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 22:50:16,072 WARN L232 SmtUtils]: Spent 12.08s on a formula simplification. DAG size of input: 197 DAG size of output: 103 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 22:50:16,076 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-04-06 22:50:16,076 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-04-06 22:50:16,076 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-04-06 22:50:16,077 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-04-06 22:50:16,077 INFO L878 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-04-06 22:50:16,077 INFO L878 garLoopResultBuilder]: At program point L8-2(lines 7 9) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 22:50:16,077 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 7 9) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 22:50:16,077 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse2 (= main_~a~0 main_~y~0)) (.cse6 (= main_~r~0 0)) (.cse8 (= main_~s~0 1)) (.cse10 (= main_~a~0 main_~x~0)) (.cse12 (* main_~p~0 main_~x~0)) (.cse7 (<= main_~y~0 2)) (.cse0 (= main_~p~0 0)) (.cse1 (= main_~r~0 1)) (.cse3 (<= main_~c~0 2)) (.cse9 (<= 1 main_~y~0)) (.cse5 (<= main_~x~0 2))) (or (and (<= 1 main_~c~0) (= main_~s~0 0) .cse0 .cse1 .cse2 (= main_~b~0 main_~x~0) .cse3 (< main_~x~0 main_~a~0) (<= main_~a~0 2) (<= 1 main_~b~0) (= main_~q~0 1)) (let ((.cse4 (* main_~y~0 2))) (and (<= .cse4 main_~x~0) .cse0 (= main_~x~0 (+ main_~b~0 .cse4)) .cse1 .cse2 (= (+ (* main_~p~0 2) main_~q~0) 1) (< main_~x~0 (* main_~y~0 3)) .cse5 (= (+ main_~s~0 (* main_~r~0 2)) 0))) (and .cse6 .cse7 .cse8 (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse9 .cse10 .cse5 (= main_~p~0 1)) (let ((.cse11 (* main_~x~0 2))) (and .cse6 (= (+ .cse11 main_~b~0) main_~y~0) .cse7 .cse8 (< main_~x~0 main_~y~0) (= main_~x~0 .cse12) (= (+ main_~q~0 (* main_~p~0 (div .cse11 main_~x~0))) 0) .cse10 (< main_~y~0 (* main_~x~0 3)))) (let ((.cse13 (* main_~a~0 main_~s~0))) (and (= (+ main_~y~0 .cse12) main_~a~0) (<= 1 main_~x~0) .cse7 .cse0 (= main_~b~0 (+ main_~x~0 .cse13)) .cse1 .cse3 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse9 (not (<= 0 (+ main_~x~0 (* 2 .cse13)))) .cse5)))) [2022-04-06 22:50:16,077 INFO L878 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (= main_~r~0 0)) (.cse1 (= main_~s~0 1)) (.cse4 (<= main_~y~0 2)) (.cse2 (= main_~a~0 main_~x~0)) (.cse5 (= main_~p~0 0)) (.cse6 (= main_~r~0 1)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (<= 1 main_~y~0))) (or (and .cse0 .cse1 (= main_~b~0 main_~y~0) (= main_~q~0 0) (= main_~y~0 0) .cse2 (= main_~p~0 1)) (let ((.cse3 (* main_~x~0 2))) (and .cse0 (= (+ .cse3 main_~b~0) main_~y~0) (<= 1 main_~x~0) .cse4 .cse1 (< main_~x~0 main_~y~0) (= main_~x~0 (* main_~p~0 main_~x~0)) (= (+ main_~q~0 (* main_~p~0 (div .cse3 main_~x~0))) 0) .cse2)) (and (= (+ main_~q~0 main_~p~0) 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~x~0 (+ main_~b~0 main_~a~0)) (= (+ main_~s~0 1) 0) .cse2) (let ((.cse9 (* main_~y~0 2))) (and (<= .cse9 main_~x~0) .cse5 (= main_~x~0 (+ main_~b~0 .cse9)) .cse6 .cse7 (= (+ (* main_~p~0 2) main_~q~0) 1) .cse8 (<= main_~x~0 2) (= (+ main_~s~0 (* main_~r~0 2)) 0))))) [2022-04-06 22:50:16,077 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 18 76) the Hoare annotation is: true [2022-04-06 22:50:16,077 INFO L878 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse26 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse9 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse13 (<= main_~x~0 main_~a~0)) (.cse14 (<= 1 main_~b~0)) (.cse15 (= main_~q~0 1)) (.cse17 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse18 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse19 (<= 1 main_~x~0)) (.cse3 (= main_~p~0 0)) (.cse21 (= main_~b~0 (+ main_~x~0 .cse26))) (.cse5 (= main_~r~0 1)) (.cse8 (< main_~b~0 main_~c~0)) (.cse10 (<= main_~c~0 2)) (.cse22 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse23 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse2 (<= main_~y~0 2)) (.cse16 (= main_~d~0 1)) (.cse27 (= main_~r~0 0)) (.cse4 (= main_~k~0 0)) (.cse28 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse29 (<= 1 main_~a~0)) (.cse30 (= main_~b~0 main_~y~0)) (.cse12 (<= main_~b~0 (div main_~v~0 2))) (.cse31 (= main_~q~0 0)) (.cse24 (<= 1 main_~y~0)) (.cse32 (= main_~a~0 main_~x~0)) (.cse33 (= main_~c~0 main_~x~0)) (.cse25 (<= main_~x~0 2)) (.cse34 (= main_~p~0 1))) (or (and .cse0 .cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 (= main_~s~0 0) .cse2 .cse3 .cse4 .cse5 .cse7 .cse9 .cse10 .cse16 .cse11 .cse13 .cse14 .cse15 (< main_~v~0 main_~c~0)) (and (= main_~b~0 main_~v~0) .cse17 .cse18 .cse19 .cse3 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse20 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse20 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse20)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse21 .cse5 .cse8 .cse10 .cse22 .cse16 .cse23 .cse24 .cse25) (and .cse0 .cse17 .cse18 .cse19 .cse3 .cse21 .cse5 .cse6 .cse8 .cse10 .cse22 .cse23 .cse24 (not (<= 0 (+ main_~x~0 (* 2 .cse26)))) .cse25) (and .cse0 .cse27 .cse2 .cse4 .cse28 .cse29 .cse30 .cse16 .cse31 .cse24 .cse32 .cse33 .cse25 .cse34) (and .cse27 (<= (* main_~b~0 2) main_~c~0) .cse4 .cse28 .cse6 .cse29 .cse30 (= main_~d~0 2) .cse12 .cse31 .cse24 .cse32 .cse33 .cse25 .cse34)))) [2022-04-06 22:50:16,077 INFO L878 garLoopResultBuilder]: At program point L36(lines 36 37) the Hoare annotation is: (let ((.cse2 (= main_~a~0 main_~y~0)) (.cse6 (= main_~r~0 0)) (.cse8 (= main_~s~0 1)) (.cse10 (= main_~a~0 main_~x~0)) (.cse12 (* main_~p~0 main_~x~0)) (.cse7 (<= main_~y~0 2)) (.cse0 (= main_~p~0 0)) (.cse1 (= main_~r~0 1)) (.cse3 (<= main_~c~0 2)) (.cse9 (<= 1 main_~y~0)) (.cse5 (<= main_~x~0 2))) (or (and (<= 1 main_~c~0) (= main_~s~0 0) .cse0 .cse1 .cse2 (= main_~b~0 main_~x~0) .cse3 (< main_~x~0 main_~a~0) (<= main_~a~0 2) (<= 1 main_~b~0) (= main_~q~0 1)) (let ((.cse4 (* main_~y~0 2))) (and (<= .cse4 main_~x~0) .cse0 (= main_~x~0 (+ main_~b~0 .cse4)) .cse1 .cse2 (= (+ (* main_~p~0 2) main_~q~0) 1) (< main_~x~0 (* main_~y~0 3)) .cse5 (= (+ main_~s~0 (* main_~r~0 2)) 0))) (and .cse6 .cse7 .cse8 (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse9 .cse10 .cse5 (= main_~p~0 1)) (let ((.cse11 (* main_~x~0 2))) (and .cse6 (= (+ .cse11 main_~b~0) main_~y~0) .cse7 .cse8 (< main_~x~0 main_~y~0) (= main_~x~0 .cse12) (= (+ main_~q~0 (* main_~p~0 (div .cse11 main_~x~0))) 0) .cse10 (< main_~y~0 (* main_~x~0 3)))) (let ((.cse13 (* main_~a~0 main_~s~0))) (and (= (+ main_~y~0 .cse12) main_~a~0) (<= 1 main_~x~0) .cse7 .cse0 (= main_~b~0 (+ main_~x~0 .cse13)) .cse1 .cse3 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse9 (not (<= 0 (+ main_~x~0 (* 2 .cse13)))) .cse5)))) [2022-04-06 22:50:16,077 INFO L878 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-04-06 22:50:16,077 INFO L878 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 2) (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-04-06 22:50:16,078 INFO L878 garLoopResultBuilder]: At program point L53(lines 49 59) the Hoare annotation is: (let ((.cse2 (= main_~s~0 0)) (.cse5 (= main_~a~0 main_~y~0)) (.cse7 (= main_~b~0 main_~x~0)) (.cse9 (< main_~x~0 main_~a~0)) (.cse11 (<= 1 main_~b~0)) (.cse12 (= main_~q~0 1)) (.cse1 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse3 (= main_~p~0 0)) (.cse4 (= main_~r~0 1)) (.cse6 (< main_~b~0 main_~c~0)) (.cse8 (<= main_~c~0 2)) (.cse10 (<= main_~a~0 2)) (.cse13 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse14 (<= main_~b~0 (div main_~v~0 2))) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse18 (= main_~r~0 0)) (.cse19 (<= main_~y~0 2)) (.cse20 (= main_~k~0 0)) (.cse21 (= main_~s~0 1)) (.cse22 (<= 1 main_~a~0)) (.cse23 (= main_~b~0 main_~y~0)) (.cse24 (= main_~q~0 0)) (.cse16 (<= 1 main_~y~0)) (.cse25 (= main_~a~0 main_~x~0)) (.cse26 (= main_~c~0 main_~x~0)) (.cse17 (<= main_~x~0 2)) (.cse27 (= main_~p~0 1))) (or (and (= main_~b~0 main_~v~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse13 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse14 .cse11 .cse12) (let ((.cse15 (* main_~a~0 main_~s~0))) (and .cse0 (<= main_~v~0 main_~b~0) (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0) .cse1 (<= 1 main_~x~0) .cse3 (= main_~b~0 (+ main_~x~0 .cse15)) .cse4 .cse6 .cse8 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse10 .cse16 (not (<= 0 (+ main_~x~0 (* 2 .cse15)))) .cse17)) (and .cse18 (<= (* main_~b~0 2) main_~c~0) .cse19 .cse20 .cse21 .cse13 .cse22 .cse23 (= main_~d~0 2) .cse14 .cse24 .cse16 .cse25 .cse26 .cse17 .cse27) (and .cse0 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 (= main_~d~0 1) .cse24 .cse16 .cse25 .cse26 .cse17 .cse27))) [2022-04-06 22:50:16,078 INFO L878 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse27 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse2 (= main_~s~0 0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse12 (<= main_~x~0 main_~a~0)) (.cse13 (<= 1 main_~b~0)) (.cse14 (= main_~q~0 1)) (.cse18 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse19 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse20 (<= 1 main_~x~0)) (.cse4 (= main_~p~0 0)) (.cse22 (= main_~b~0 (+ main_~x~0 .cse27))) (.cse6 (= main_~r~0 1)) (.cse16 (< main_~b~0 main_~c~0)) (.cse9 (<= main_~c~0 2)) (.cse23 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse24 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (<= main_~y~0 2)) (.cse10 (= main_~d~0 1)) (.cse28 (= main_~r~0 0)) (.cse5 (= main_~k~0 0)) (.cse29 (= main_~s~0 1)) (.cse15 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse30 (<= 1 main_~a~0)) (.cse31 (= main_~b~0 main_~y~0)) (.cse17 (<= main_~b~0 (div main_~v~0 2))) (.cse32 (= main_~q~0 0)) (.cse25 (<= 1 main_~y~0)) (.cse33 (= main_~a~0 main_~x~0)) (.cse34 (= main_~c~0 main_~x~0)) (.cse26 (<= main_~x~0 2)) (.cse35 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< main_~v~0 main_~c~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse15 .cse7 .cse16 .cse8 .cse9 .cse11 .cse17 .cse12 .cse13 .cse14) (and (= main_~b~0 main_~v~0) .cse18 .cse19 .cse20 .cse4 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse21 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse21 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse21)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse22 .cse6 .cse16 .cse9 .cse23 .cse10 .cse24 .cse25 .cse26) (and .cse0 .cse18 .cse19 .cse20 .cse4 .cse22 .cse6 .cse15 .cse16 .cse9 .cse23 .cse24 .cse25 (not (<= 0 (+ main_~x~0 (* 2 .cse27)))) .cse26) (and .cse0 .cse28 .cse3 .cse5 .cse29 .cse30 .cse31 .cse10 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35) (and .cse28 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse29 .cse15 .cse30 .cse31 (= main_~d~0 2) .cse17 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35)))) [2022-04-06 22:50:16,078 INFO L878 garLoopResultBuilder]: At program point L49-3(lines 49 59) the Hoare annotation is: (let ((.cse2 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse4 (= main_~r~0 0)) (.cse5 (<= main_~y~0 2)) (.cse1 (= main_~k~0 0)) (.cse6 (= main_~s~0 1)) (.cse7 (<= 1 main_~a~0)) (.cse8 (= main_~b~0 main_~y~0)) (.cse9 (= main_~q~0 0)) (.cse3 (not (<= (* main_~v~0 2) main_~c~0))) (.cse10 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse12 (= main_~c~0 main_~x~0)) (.cse13 (<= main_~x~0 2)) (.cse14 (= main_~p~0 1))) (or (and .cse0 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (= main_~p~0 0) .cse1 (= main_~c~0 main_~y~0) (< main_~x~0 main_~y~0) (= main_~r~0 1) .cse2 (= main_~a~0 main_~y~0) (= main_~b~0 main_~x~0) (<= main_~a~0 2) .cse3 (= main_~q~0 1)) (and .cse4 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse1 .cse6 .cse2 .cse7 .cse8 (= main_~d~0 2) .cse9 .cse3 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse4 (<= main_~v~0 main_~b~0) .cse5 .cse1 .cse6 .cse7 .cse8 .cse9 .cse3 .cse10 .cse11 .cse12 .cse13 .cse14))) [2022-04-06 22:50:16,078 INFO L885 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: true [2022-04-06 22:50:16,078 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 2) (<= main_~x~0 2)) [2022-04-06 22:50:16,078 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse27 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse2 (= main_~s~0 0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse12 (<= main_~x~0 main_~a~0)) (.cse13 (<= 1 main_~b~0)) (.cse14 (= main_~q~0 1)) (.cse18 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse19 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse20 (<= 1 main_~x~0)) (.cse4 (= main_~p~0 0)) (.cse22 (= main_~b~0 (+ main_~x~0 .cse27))) (.cse6 (= main_~r~0 1)) (.cse16 (< main_~b~0 main_~c~0)) (.cse9 (<= main_~c~0 2)) (.cse23 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse24 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (<= main_~y~0 2)) (.cse10 (= main_~d~0 1)) (.cse28 (= main_~r~0 0)) (.cse5 (= main_~k~0 0)) (.cse29 (= main_~s~0 1)) (.cse15 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse30 (<= 1 main_~a~0)) (.cse31 (= main_~b~0 main_~y~0)) (.cse17 (<= main_~b~0 (div main_~v~0 2))) (.cse32 (= main_~q~0 0)) (.cse25 (<= 1 main_~y~0)) (.cse33 (= main_~a~0 main_~x~0)) (.cse34 (= main_~c~0 main_~x~0)) (.cse26 (<= main_~x~0 2)) (.cse35 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< main_~v~0 main_~c~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse15 .cse7 .cse16 .cse8 .cse9 .cse11 .cse17 .cse12 .cse13 .cse14) (and (= main_~b~0 main_~v~0) .cse18 .cse19 .cse20 .cse4 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse21 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse21 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse21)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse22 .cse6 .cse16 .cse9 .cse23 .cse10 .cse24 .cse25 .cse26) (and .cse0 .cse18 .cse19 .cse20 .cse4 .cse22 .cse6 .cse15 .cse16 .cse9 .cse23 .cse24 .cse25 (not (<= 0 (+ main_~x~0 (* 2 .cse27)))) .cse26) (and .cse0 .cse28 .cse3 .cse5 .cse29 .cse30 .cse31 .cse10 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35) (and .cse28 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse29 .cse15 .cse30 .cse31 (= main_~d~0 2) .cse17 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35)))) [2022-04-06 22:50:16,078 INFO L878 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse27 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse2 (= main_~s~0 0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse12 (<= main_~x~0 main_~a~0)) (.cse13 (<= 1 main_~b~0)) (.cse14 (= main_~q~0 1)) (.cse18 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse19 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse20 (<= 1 main_~x~0)) (.cse4 (= main_~p~0 0)) (.cse22 (= main_~b~0 (+ main_~x~0 .cse27))) (.cse6 (= main_~r~0 1)) (.cse16 (< main_~b~0 main_~c~0)) (.cse9 (<= main_~c~0 2)) (.cse23 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse24 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (<= main_~y~0 2)) (.cse10 (= main_~d~0 1)) (.cse28 (= main_~r~0 0)) (.cse5 (= main_~k~0 0)) (.cse29 (= main_~s~0 1)) (.cse15 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse30 (<= 1 main_~a~0)) (.cse31 (= main_~b~0 main_~y~0)) (.cse17 (<= main_~b~0 (div main_~v~0 2))) (.cse32 (= main_~q~0 0)) (.cse25 (<= 1 main_~y~0)) (.cse33 (= main_~a~0 main_~x~0)) (.cse34 (= main_~c~0 main_~x~0)) (.cse26 (<= main_~x~0 2)) (.cse35 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< main_~v~0 main_~c~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse15 .cse7 .cse16 .cse8 .cse9 .cse11 .cse17 .cse12 .cse13 .cse14) (and (= main_~b~0 main_~v~0) .cse18 .cse19 .cse20 .cse4 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse21 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse21 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse21)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse22 .cse6 .cse16 .cse9 .cse23 .cse10 .cse24 .cse25 .cse26) (and .cse0 .cse18 .cse19 .cse20 .cse4 .cse22 .cse6 .cse15 .cse16 .cse9 .cse23 .cse24 .cse25 (not (<= 0 (+ main_~x~0 (* 2 .cse27)))) .cse26) (and .cse0 .cse28 .cse3 .cse5 .cse29 .cse30 .cse31 .cse10 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35) (and .cse28 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse29 .cse15 .cse30 .cse31 (= main_~d~0 2) .cse17 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35)))) [2022-04-06 22:50:16,078 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 18 76) the Hoare annotation is: true [2022-04-06 22:50:16,078 INFO L878 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse21 (* main_~b~0 main_~k~0))) (let ((.cse24 (+ main_~c~0 .cse21))) (let ((.cse14 (= main_~s~0 0)) (.cse15 (= main_~p~0 0)) (.cse28 (= main_~k~0 0)) (.cse17 (= main_~r~0 1)) (.cse18 (= main_~a~0 main_~y~0)) (.cse26 (< main_~b~0 main_~c~0)) (.cse19 (= main_~b~0 main_~x~0)) (.cse27 (<= main_~c~0 2)) (.cse20 (<= main_~a~0 2)) (.cse22 (<= 1 main_~b~0)) (.cse23 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~r~0 0)) (.cse2 (= main_~x~0 .cse24)) (.cse3 (<= main_~y~0 2)) (.cse4 (not (<= .cse21 main_~c~0))) (.cse5 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse7 (<= 1 main_~a~0)) (.cse8 (= main_~b~0 main_~y~0)) (.cse9 (= main_~q~0 0)) (.cse10 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse12 (<= main_~x~0 2)) (.cse13 (= main_~p~0 1))) (or (and (<= main_~b~0 (div (div (+ (* (- 1) main_~c~0) 2) 2) 2)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse16 (* main_~b~0 2))) (and .cse0 .cse14 .cse15 (= (+ main_~c~0 .cse16) main_~y~0) (< main_~x~0 main_~y~0) .cse17 .cse6 .cse18 .cse19 .cse20 (= .cse21 .cse16) .cse22 .cse23)) (and .cse0 .cse1 (<= main_~v~0 main_~b~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse25 (* main_~a~0 main_~s~0))) (and (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0) (= main_~a~0 .cse24) (<= 1 main_~x~0) .cse15 (= main_~b~0 (+ main_~x~0 .cse25)) .cse17 .cse26 .cse27 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse20 .cse10 (not (<= 0 (+ main_~x~0 (* 2 .cse25)))) .cse12)) (and .cse1 .cse3 .cse28 .cse5 .cse7 .cse8 .cse9 .cse10 .cse11 (= main_~c~0 main_~x~0) .cse12 .cse13) (and .cse14 .cse15 .cse28 .cse17 .cse18 .cse26 .cse19 .cse27 (< main_~x~0 main_~a~0) .cse20 .cse22 .cse23) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= main_~b~0 1) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))))) [2022-04-06 22:50:16,079 INFO L878 garLoopResultBuilder]: At program point L42-3(lines 42 62) the Hoare annotation is: (let ((.cse7 (* main_~b~0 main_~k~0)) (.cse8 (* main_~b~0 2))) (let ((.cse5 (+ main_~c~0 .cse8)) (.cse18 (= main_~b~0 main_~y~0)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse11 (= main_~r~0 0)) (.cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse12 (= main_~x~0 (+ main_~c~0 .cse7))) (.cse2 (<= 1 main_~x~0)) (.cse3 (<= main_~b~0 2)) (.cse4 (<= main_~y~0 2)) (.cse13 (= main_~s~0 1)) (.cse14 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse6 (not (<= main_~b~0 main_~c~0))) (.cse15 (= main_~q~0 0)) (.cse9 (<= 1 main_~y~0)) (.cse16 (= main_~a~0 main_~x~0)) (.cse10 (<= main_~x~0 2)) (.cse17 (= main_~p~0 1))) (or (and .cse0 (= main_~s~0 0) .cse1 .cse2 .cse3 .cse4 (= main_~p~0 0) (not (<= main_~a~0 main_~x~0)) (= main_~r~0 1) (< main_~x~0 .cse5) (= main_~a~0 main_~y~0) (= main_~b~0 main_~x~0) .cse6 (= .cse7 .cse8) .cse9 .cse10) (and .cse0 .cse11 .cse1 .cse12 .cse2 .cse3 .cse4 .cse13 (<= main_~b~0 1) .cse14 .cse6 .cse15 .cse9 .cse16 .cse10 .cse17) (and .cse0 (= .cse5 main_~x~0) .cse11 .cse2 .cse3 .cse4 .cse13 (<= 0 main_~c~0) .cse18 .cse6 (= main_~k~0 2) .cse15 .cse9 .cse16 .cse10 .cse17) (and .cse11 .cse4 (= main_~k~0 0) .cse13 (<= 1 main_~a~0) .cse18 .cse15 (< main_~c~0 main_~b~0) .cse16 (= main_~c~0 main_~x~0) .cse17) (and .cse0 .cse11 (<= main_~v~0 main_~b~0) .cse1 .cse12 .cse2 .cse3 .cse4 .cse13 .cse14 .cse6 .cse15 .cse9 .cse16 .cse10 .cse17) (and (<= main_~b~0 (div (div (+ (* (- 1) main_~c~0) 2) 2) 2)) .cse0 .cse11 .cse1 .cse12 .cse2 .cse3 .cse4 .cse13 .cse14 .cse6 .cse15 .cse9 .cse16 .cse10 .cse17)))) [2022-04-06 22:50:16,079 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 76) the Hoare annotation is: true [2022-04-06 22:50:16,079 INFO L878 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= 1 main_~x~0) (<= main_~y~0 2) (<= 1 main_~y~0) (<= main_~x~0 2)) [2022-04-06 22:50:16,079 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-04-06 22:50:16,079 INFO L878 garLoopResultBuilder]: At program point L22-1(line 22) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-04-06 22:50:16,079 INFO L878 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse26 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse9 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse13 (<= main_~x~0 main_~a~0)) (.cse14 (<= 1 main_~b~0)) (.cse15 (= main_~q~0 1)) (.cse17 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse18 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse19 (<= 1 main_~x~0)) (.cse3 (= main_~p~0 0)) (.cse21 (= main_~b~0 (+ main_~x~0 .cse26))) (.cse5 (= main_~r~0 1)) (.cse8 (< main_~b~0 main_~c~0)) (.cse10 (<= main_~c~0 2)) (.cse22 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse23 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse2 (<= main_~y~0 2)) (.cse16 (= main_~d~0 1)) (.cse27 (= main_~r~0 0)) (.cse4 (= main_~k~0 0)) (.cse28 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse29 (<= 1 main_~a~0)) (.cse30 (= main_~b~0 main_~y~0)) (.cse12 (<= main_~b~0 (div main_~v~0 2))) (.cse31 (= main_~q~0 0)) (.cse24 (<= 1 main_~y~0)) (.cse32 (= main_~a~0 main_~x~0)) (.cse33 (= main_~c~0 main_~x~0)) (.cse25 (<= main_~x~0 2)) (.cse34 (= main_~p~0 1))) (or (and .cse0 .cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 (= main_~s~0 0) .cse2 .cse3 .cse4 .cse5 .cse7 .cse9 .cse10 .cse16 .cse11 .cse13 .cse14 .cse15 (< main_~v~0 main_~c~0)) (and (= main_~b~0 main_~v~0) .cse17 .cse18 .cse19 .cse3 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse20 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse20 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse20)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse21 .cse5 .cse8 .cse10 .cse22 .cse16 .cse23 .cse24 .cse25) (and .cse0 .cse17 .cse18 .cse19 .cse3 .cse21 .cse5 .cse6 .cse8 .cse10 .cse22 .cse23 .cse24 (not (<= 0 (+ main_~x~0 (* 2 .cse26)))) .cse25) (and .cse0 .cse27 .cse2 .cse4 .cse28 .cse29 .cse30 .cse16 .cse31 .cse24 .cse32 .cse33 .cse25 .cse34) (and .cse27 (<= (* main_~b~0 2) main_~c~0) .cse4 .cse28 .cse6 .cse29 .cse30 (= main_~d~0 2) .cse12 .cse31 .cse24 .cse32 .cse33 .cse25 .cse34)))) [2022-04-06 22:50:16,079 INFO L878 garLoopResultBuilder]: At program point L43(lines 43 44) the Hoare annotation is: (let ((.cse21 (* main_~b~0 main_~k~0))) (let ((.cse24 (+ main_~c~0 .cse21))) (let ((.cse14 (= main_~s~0 0)) (.cse15 (= main_~p~0 0)) (.cse28 (= main_~k~0 0)) (.cse17 (= main_~r~0 1)) (.cse18 (= main_~a~0 main_~y~0)) (.cse26 (< main_~b~0 main_~c~0)) (.cse19 (= main_~b~0 main_~x~0)) (.cse27 (<= main_~c~0 2)) (.cse20 (<= main_~a~0 2)) (.cse22 (<= 1 main_~b~0)) (.cse23 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~r~0 0)) (.cse2 (= main_~x~0 .cse24)) (.cse3 (<= main_~y~0 2)) (.cse4 (not (<= .cse21 main_~c~0))) (.cse5 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse7 (<= 1 main_~a~0)) (.cse8 (= main_~b~0 main_~y~0)) (.cse9 (= main_~q~0 0)) (.cse10 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse12 (<= main_~x~0 2)) (.cse13 (= main_~p~0 1))) (or (and (<= main_~b~0 (div (div (+ (* (- 1) main_~c~0) 2) 2) 2)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse16 (* main_~b~0 2))) (and .cse0 .cse14 .cse15 (= (+ main_~c~0 .cse16) main_~y~0) (< main_~x~0 main_~y~0) .cse17 .cse6 .cse18 .cse19 .cse20 (= .cse21 .cse16) .cse22 .cse23)) (and .cse0 .cse1 (<= main_~v~0 main_~b~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse25 (* main_~a~0 main_~s~0))) (and (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0) (= main_~a~0 .cse24) (<= 1 main_~x~0) .cse15 (= main_~b~0 (+ main_~x~0 .cse25)) .cse17 .cse26 .cse27 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse20 .cse10 (not (<= 0 (+ main_~x~0 (* 2 .cse25)))) .cse12)) (and .cse1 .cse3 .cse28 .cse5 .cse7 .cse8 .cse9 .cse10 .cse11 (= main_~c~0 main_~x~0) .cse12 .cse13) (and .cse14 .cse15 .cse28 .cse17 .cse18 .cse26 .cse19 .cse27 (< main_~x~0 main_~a~0) .cse20 .cse22 .cse23) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= main_~b~0 1) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))))) [2022-04-06 22:50:16,079 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-06 22:50:16,079 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 22:50:16,079 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-06 22:50:16,079 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-06 22:50:16,079 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 22:50:16,079 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 22:50:16,079 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-06 22:50:16,079 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-04-06 22:50:16,080 INFO L878 garLoopResultBuilder]: At program point L12(lines 12 13) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-06 22:50:16,080 INFO L878 garLoopResultBuilder]: At program point L11(lines 11 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-06 22:50:16,080 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 10 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-06 22:50:16,080 INFO L878 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-06 22:50:16,080 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-06 22:50:16,082 INFO L719 BasicCegarLoop]: Path program histogram: [18, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2] [2022-04-06 22:50:16,083 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 22:50:16,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,106 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,107 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,107 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,107 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 10:50:16 BoogieIcfgContainer [2022-04-06 22:50:16,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 22:50:16,116 INFO L158 Benchmark]: Toolchain (without parser) took 463981.04ms. Allocated memory was 201.3MB in the beginning and 335.5MB in the end (delta: 134.2MB). Free memory was 145.9MB in the beginning and 113.3MB in the end (delta: 32.6MB). Peak memory consumption was 177.3MB. Max. memory is 8.0GB. [2022-04-06 22:50:16,116 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 22:50:16,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.02ms. Allocated memory is still 201.3MB. Free memory was 145.7MB in the beginning and 174.7MB in the end (delta: -29.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-04-06 22:50:16,116 INFO L158 Benchmark]: Boogie Preprocessor took 18.42ms. Allocated memory is still 201.3MB. Free memory was 174.7MB in the beginning and 173.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 22:50:16,116 INFO L158 Benchmark]: RCFGBuilder took 228.72ms. Allocated memory is still 201.3MB. Free memory was 173.1MB in the beginning and 161.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-06 22:50:16,116 INFO L158 Benchmark]: TraceAbstraction took 463561.67ms. Allocated memory was 201.3MB in the beginning and 335.5MB in the end (delta: 134.2MB). Free memory was 161.0MB in the beginning and 113.3MB in the end (delta: 47.7MB). Peak memory consumption was 191.9MB. Max. memory is 8.0GB. [2022-04-06 22:50:16,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 167.02ms. Allocated memory is still 201.3MB. Free memory was 145.7MB in the beginning and 174.7MB in the end (delta: -29.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.42ms. Allocated memory is still 201.3MB. Free memory was 174.7MB in the beginning and 173.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 228.72ms. Allocated memory is still 201.3MB. Free memory was 173.1MB in the beginning and 161.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 463561.67ms. Allocated memory was 201.3MB in the beginning and 335.5MB in the end (delta: 134.2MB). Free memory was 161.0MB in the beginning and 113.3MB in the end (delta: 47.7MB). Peak memory consumption was 191.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 463.5s, OverallIterations: 25, TraceHistogramMax: 29, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 116.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1155 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1041 mSDsluCounter, 6554 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 526 IncrementalHoareTripleChecker+Unchecked, 5188 mSDsCounter, 1142 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8212 IncrementalHoareTripleChecker+Invalid, 9880 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1142 mSolverCounterUnsat, 1366 mSDtfsCounter, 8212 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4494 GetRequests, 3912 SyntacticMatches, 25 SemanticMatches, 557 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2891 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred in iteration=16, InterpolantAutomatonStates: 306, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 25 MinimizatonAttempts, 333 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 2380 PreInvPairs, 2797 NumberOfFragments, 4160 HoareAnnotationTreeSize, 2380 FomulaSimplifications, 4194 FormulaSimplificationTreeSizeReduction, 27.7s HoareSimplificationTime, 40 FomulaSimplificationsInter, 1609633 FormulaSimplificationTreeSizeReductionInter, 88.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant [2022-04-06 22:50:16,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,130 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,130 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,131 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,131 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,131 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 22:50:16,131 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] Derived loop invariant: (((((((((((((((((((v == d * b && 1 <= c) && s == 0) && y <= 2) && p == 0) && k == 0) && r == 1) && a == y) && b == x) && c <= 2) && d == 1) && x < a) && x <= a) && 1 <= b) && q == 1) && v < c) || ((((((((((((((((v == d * b && 1 <= c) && s == 0) && y <= 2) && p == 0) && k == 0) && r == 1) && -1 * v / -2 <= b) && a == y) && b < c) && b == x) && c <= 2) && x < a) && b <= v / 2) && x <= a) && 1 <= b) && q == 1)) || ((((((((((((((b == v && y + p * x == a) && a == c + b * k) && 1 <= x) && p == 0) && (\exists aux_div_aux_div_main_~c~0_33_28 : int :: ((2 * aux_div_aux_div_main_~c~0_33_28 <= (2 + -1 * b) / 2 && (-2 + c) / -2 < 2 + 2 * aux_div_aux_div_main_~c~0_33_28) && b < aux_div_aux_div_main_~c~0_33_28) && (-2 + 5 * aux_div_aux_div_main_~c~0_33_28) / -2 < 2)) && b == x + a * s) && r == 1) && b < c) && c <= 2) && q == p * s + 1) && d == 1) && a <= 2) && 1 <= y) && x <= 2)) || ((((((((((((((v == d * b && y + p * x == a) && a == c + b * k) && 1 <= x) && p == 0) && b == x + a * s) && r == 1) && -1 * v / -2 <= b) && b < c) && c <= 2) && q == p * s + 1) && a <= 2) && 1 <= y) && !(0 <= x + 2 * (a * s))) && x <= 2)) || (((((((((((((v == d * b && r == 0) && y <= 2) && k == 0) && s == 1) && 1 <= a) && b == y) && d == 1) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1)) || ((((((((((((((r == 0 && b * 2 <= c) && k == 0) && s == 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && d == 2) && b <= v / 2) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((1 <= c && s == 0) && p == 0) && r == 1) && a == y) && b == x) && c <= 2) && x < a) && a <= 2) && 1 <= b) && q == 1) || ((((((((y * 2 <= x && p == 0) && x == b + y * 2) && r == 1) && a == y) && p * 2 + q == 1) && x < y * 3) && x <= 2) && s + r * 2 == 0)) || (((((((((r == 0 && y <= 2) && s == 1) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1)) || ((((((((r == 0 && x * 2 + b == y) && y <= 2) && s == 1) && x < y) && x == p * x) && q + p * (x * 2 / x) == 0) && a == x) && y < x * 3)) || ((((((((((y + p * x == a && 1 <= x) && y <= 2) && p == 0) && b == x + a * s) && r == 1) && c <= 2) && q == p * s + 1) && 1 <= y) && !(0 <= x + 2 * (a * s))) && x <= 2) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((((((((((b <= (-1 * c + 2) / 2 / 2 && v == d * b) && r == 0) && x == c + b * k) && y <= 2) && !(b * k <= c)) && s == 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1) || ((((((((((((v == d * b && s == 0) && p == 0) && c + b * 2 == y) && x < y) && r == 1) && -1 * v / -2 <= b) && a == y) && b == x) && a <= 2) && b * k == b * 2) && 1 <= b) && q == 1)) || ((((((((((((((v == d * b && r == 0) && v <= b) && x == c + b * k) && y <= 2) && !(b * k <= c)) && s == 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1)) || ((((((((((((y + p * x == a && a == c + b * k) && 1 <= x) && p == 0) && b == x + a * s) && r == 1) && b < c) && c <= 2) && q == p * s + 1) && a <= 2) && 1 <= y) && !(0 <= x + 2 * (a * s))) && x <= 2)) || (((((((((((r == 0 && y <= 2) && k == 0) && s == 1) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1)) || (((((((((((s == 0 && p == 0) && k == 0) && r == 1) && a == y) && b < c) && b == x) && c <= 2) && x < a) && a <= 2) && 1 <= b) && q == 1)) || ((((((((((((((v == d * b && r == 0) && x == c + b * k) && y <= 2) && !(b * k <= c)) && s == 1) && b <= 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-06 22:50:16,351 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-04-06 22:50:16,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...