/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:48:23,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:48:23,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:48:23,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 22:48:23,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:48:23,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:48:23,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:48:23,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 22:48:24,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:48:24,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:48:24,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:48:24,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:48:24,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:48:24,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:48:24,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:48:24,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:48:24,016 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:48:24,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:48:24,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:48:24,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:48:24,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:48:24,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:48:24,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:48:24,017 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:48:24,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:48:24,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:48:24,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:48:24,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:48:24,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:48:24,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:48:24,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:48:24,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:48:24,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:48:24,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:48:24,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:48:24,019 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:48:24,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:48:24,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:48:24,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:48:24,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:48:24,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:48:24,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:48:24,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:48:24,229 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:48:24,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound10.c [2022-01-09 22:48:24,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e0ecc51f/a3df8cc4211a476caf53e933259e0c77/FLAG486f5a717 [2022-01-09 22:48:24,586 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:48:24,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound10.c [2022-01-09 22:48:24,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e0ecc51f/a3df8cc4211a476caf53e933259e0c77/FLAG486f5a717 [2022-01-09 22:48:25,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e0ecc51f/a3df8cc4211a476caf53e933259e0c77 [2022-01-09 22:48:25,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:48:25,026 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:48:25,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:48:25,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:48:25,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:48:25,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402a1b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25, skipping insertion in model container [2022-01-09 22:48:25,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:48:25,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:48:25,186 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/prod4br-ll_unwindbound10.c[524,537] [2022-01-09 22:48:25,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:48:25,201 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:48:25,209 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/prod4br-ll_unwindbound10.c[524,537] [2022-01-09 22:48:25,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:48:25,222 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:48:25,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25 WrapperNode [2022-01-09 22:48:25,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:48:25,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:48:25,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:48:25,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:48:25,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,245 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-01-09 22:48:25,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:48:25,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:48:25,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:48:25,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:48:25,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:48:25,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:48:25,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:48:25,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:48:25,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (1/1) ... [2022-01-09 22:48:25,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:48:25,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:25,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-09 22:48:25,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 22:48:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:48:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:48:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:48:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:48:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-09 22:48:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-09 22:48:25,366 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:48:25,366 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:48:25,460 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:48:25,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:48:25,464 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-09 22:48:25,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:48:25 BoogieIcfgContainer [2022-01-09 22:48:25,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:48:25,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:48:25,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:48:25,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:48:25,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:48:25" (1/3) ... [2022-01-09 22:48:25,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df2b339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:48:25, skipping insertion in model container [2022-01-09 22:48:25,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:48:25" (2/3) ... [2022-01-09 22:48:25,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df2b339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:48:25, skipping insertion in model container [2022-01-09 22:48:25,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:48:25" (3/3) ... [2022-01-09 22:48:25,471 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound10.c [2022-01-09 22:48:25,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:48:25,474 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:48:25,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:48:25,518 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 22:48:25,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:48:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 22:48:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-09 22:48:25,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:25,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:25,530 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:25,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:25,533 INFO L85 PathProgramCache]: Analyzing trace with hash -563977895, now seen corresponding path program 1 times [2022-01-09 22:48:25,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:25,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910626316] [2022-01-09 22:48:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:25,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:48:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:25,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:25,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910626316] [2022-01-09 22:48:25,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910626316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:48:25,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:48:25,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 22:48:25,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633770331] [2022-01-09 22:48:25,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:48:25,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 22:48:25,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:25,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 22:48:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:48:25,669 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:48:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:25,685 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-01-09 22:48:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 22:48:25,686 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-09 22:48:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:25,691 INFO L225 Difference]: With dead ends: 43 [2022-01-09 22:48:25,692 INFO L226 Difference]: Without dead ends: 19 [2022-01-09 22:48:25,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:48:25,697 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:25,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:48:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-09 22:48:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-09 22:48:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-01-09 22:48:25,725 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2022-01-09 22:48:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:25,725 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-01-09 22:48:25,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:48:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-01-09 22:48:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-09 22:48:25,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:25,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:25,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 22:48:25,727 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:25,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1986058659, now seen corresponding path program 1 times [2022-01-09 22:48:25,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:25,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524204579] [2022-01-09 22:48:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:25,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:48:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:25,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:25,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524204579] [2022-01-09 22:48:25,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524204579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:48:25,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:48:25,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 22:48:25,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907687922] [2022-01-09 22:48:25,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:48:25,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 22:48:25,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 22:48:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 22:48:25,825 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:48:25,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:25,836 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-01-09 22:48:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 22:48:25,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-09 22:48:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:25,836 INFO L225 Difference]: With dead ends: 29 [2022-01-09 22:48:25,837 INFO L226 Difference]: Without dead ends: 21 [2022-01-09 22:48:25,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 22:48:25,838 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:25,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:48:25,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-09 22:48:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-09 22:48:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-01-09 22:48:25,841 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 10 [2022-01-09 22:48:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:25,842 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-01-09 22:48:25,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:48:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-01-09 22:48:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-09 22:48:25,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:25,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:25,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 22:48:25,842 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:25,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:25,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1984271199, now seen corresponding path program 1 times [2022-01-09 22:48:25,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:25,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358367967] [2022-01-09 22:48:25,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:25,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:25,851 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:48:25,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707511003] [2022-01-09 22:48:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:25,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:25,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:25,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:48:25,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:48:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:48:25,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-09 22:48:25,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:48:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:26,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 22:48:26,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358367967] [2022-01-09 22:48:26,007 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:48:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707511003] [2022-01-09 22:48:26,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707511003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:48:26,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:48:26,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 22:48:26,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020673396] [2022-01-09 22:48:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:48:26,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 22:48:26,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 22:48:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 22:48:26,009 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:48:26,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:26,055 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2022-01-09 22:48:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 22:48:26,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-09 22:48:26,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:26,056 INFO L225 Difference]: With dead ends: 34 [2022-01-09 22:48:26,056 INFO L226 Difference]: Without dead ends: 32 [2022-01-09 22:48:26,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-09 22:48:26,058 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:26,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:48:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-09 22:48:26,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2022-01-09 22:48:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 22:48:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-01-09 22:48:26,064 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 10 [2022-01-09 22:48:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:26,065 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-01-09 22:48:26,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:48:26,065 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-01-09 22:48:26,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-09 22:48:26,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:26,066 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:26,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:48:26,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:26,283 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1194524114, now seen corresponding path program 1 times [2022-01-09 22:48:26,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:26,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025777384] [2022-01-09 22:48:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:26,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:26,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:48:26,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195829302] [2022-01-09 22:48:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:26,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:26,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:26,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:48:26,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 22:48:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:48:26,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-09 22:48:26,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:48:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:26,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:48:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:26,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:26,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025777384] [2022-01-09 22:48:26,743 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:48:26,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195829302] [2022-01-09 22:48:26,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195829302] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:48:26,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 22:48:26,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2022-01-09 22:48:26,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014515352] [2022-01-09 22:48:26,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 22:48:26,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-09 22:48:26,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-09 22:48:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-01-09 22:48:26,745 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:27,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:27,044 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-01-09 22:48:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-09 22:48:27,044 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-01-09 22:48:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:27,046 INFO L225 Difference]: With dead ends: 47 [2022-01-09 22:48:27,046 INFO L226 Difference]: Without dead ends: 45 [2022-01-09 22:48:27,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-01-09 22:48:27,048 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:27,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 101 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:48:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-09 22:48:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2022-01-09 22:48:27,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-09 22:48:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-01-09 22:48:27,054 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2022-01-09 22:48:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:27,054 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-01-09 22:48:27,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-01-09 22:48:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-09 22:48:27,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:27,055 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:27,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 22:48:27,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-09 22:48:27,287 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1756733383, now seen corresponding path program 1 times [2022-01-09 22:48:27,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:27,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275328892] [2022-01-09 22:48:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:27,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:27,327 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:48:27,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146275589] [2022-01-09 22:48:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:27,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:27,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:48:27,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 22:48:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:48:27,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-09 22:48:27,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:48:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:27,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:48:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:27,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:27,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275328892] [2022-01-09 22:48:27,471 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:48:27,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146275589] [2022-01-09 22:48:27,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146275589] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:48:27,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 22:48:27,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-01-09 22:48:27,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024150163] [2022-01-09 22:48:27,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 22:48:27,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-09 22:48:27,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-09 22:48:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-09 22:48:27,473 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:27,526 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2022-01-09 22:48:27,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-09 22:48:27,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-01-09 22:48:27,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:27,527 INFO L225 Difference]: With dead ends: 95 [2022-01-09 22:48:27,527 INFO L226 Difference]: Without dead ends: 85 [2022-01-09 22:48:27,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-09 22:48:27,528 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 52 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:27,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 124 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:48:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-09 22:48:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2022-01-09 22:48:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 61 states have internal predecessors, (77), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-09 22:48:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2022-01-09 22:48:27,538 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 19 [2022-01-09 22:48:27,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:27,538 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2022-01-09 22:48:27,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:27,538 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2022-01-09 22:48:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-09 22:48:27,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:27,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:27,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 22:48:27,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:27,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1754945923, now seen corresponding path program 1 times [2022-01-09 22:48:27,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:27,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844050880] [2022-01-09 22:48:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:27,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:27,772 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:48:27,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056978411] [2022-01-09 22:48:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:27,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:27,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:27,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:48:27,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 22:48:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:48:27,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-09 22:48:27,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:48:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:28,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:48:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:28,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:28,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844050880] [2022-01-09 22:48:28,987 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:48:28,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056978411] [2022-01-09 22:48:28,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056978411] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:48:28,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 22:48:28,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-01-09 22:48:28,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224729032] [2022-01-09 22:48:28,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 22:48:28,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-09 22:48:28,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:28,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-09 22:48:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-09 22:48:28,990 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:30,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:30,060 INFO L93 Difference]: Finished difference Result 120 states and 157 transitions. [2022-01-09 22:48:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-09 22:48:30,061 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-01-09 22:48:30,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:30,062 INFO L225 Difference]: With dead ends: 120 [2022-01-09 22:48:30,062 INFO L226 Difference]: Without dead ends: 114 [2022-01-09 22:48:30,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-01-09 22:48:30,063 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 104 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:30,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 116 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-09 22:48:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-09 22:48:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 71. [2022-01-09 22:48:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 56 states have internal predecessors, (72), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-09 22:48:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2022-01-09 22:48:30,090 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 19 [2022-01-09 22:48:30,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:30,091 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2022-01-09 22:48:30,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2022-01-09 22:48:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-09 22:48:30,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:30,091 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:30,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-09 22:48:30,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:30,325 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:30,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1942139802, now seen corresponding path program 1 times [2022-01-09 22:48:30,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:30,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219223956] [2022-01-09 22:48:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:30,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:30,343 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:48:30,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601599529] [2022-01-09 22:48:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:30,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:30,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:30,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:48:30,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 22:48:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:48:30,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-09 22:48:30,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:48:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:48:30,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 22:48:30,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:30,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219223956] [2022-01-09 22:48:30,469 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:48:30,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601599529] [2022-01-09 22:48:30,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601599529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:48:30,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:48:30,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-09 22:48:30,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376279249] [2022-01-09 22:48:30,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:48:30,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-09 22:48:30,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:30,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-09 22:48:30,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-09 22:48:30,471 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:30,564 INFO L93 Difference]: Finished difference Result 108 states and 143 transitions. [2022-01-09 22:48:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-09 22:48:30,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-01-09 22:48:30,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:30,567 INFO L225 Difference]: With dead ends: 108 [2022-01-09 22:48:30,567 INFO L226 Difference]: Without dead ends: 96 [2022-01-09 22:48:30,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-01-09 22:48:30,568 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:30,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 98 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:48:30,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-09 22:48:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2022-01-09 22:48:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 73 states have internal predecessors, (95), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-09 22:48:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2022-01-09 22:48:30,585 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 21 [2022-01-09 22:48:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:30,586 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2022-01-09 22:48:30,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:30,586 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2022-01-09 22:48:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-09 22:48:30,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:30,587 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:30,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-09 22:48:30,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:30,803 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:30,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1954557947, now seen corresponding path program 1 times [2022-01-09 22:48:30,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:30,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117282321] [2022-01-09 22:48:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:30,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:30,812 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:48:30,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515841236] [2022-01-09 22:48:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:30,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:30,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:30,814 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:48:30,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-09 22:48:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:48:30,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-09 22:48:30,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:48:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-09 22:48:30,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 22:48:30,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:30,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117282321] [2022-01-09 22:48:30,905 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:48:30,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515841236] [2022-01-09 22:48:30,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515841236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:48:30,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:48:30,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-09 22:48:30,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33063723] [2022-01-09 22:48:30,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:48:30,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-09 22:48:30,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-09 22:48:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 22:48:30,907 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 22:48:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:30,967 INFO L93 Difference]: Finished difference Result 133 states and 172 transitions. [2022-01-09 22:48:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-09 22:48:30,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-01-09 22:48:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:30,968 INFO L225 Difference]: With dead ends: 133 [2022-01-09 22:48:30,968 INFO L226 Difference]: Without dead ends: 121 [2022-01-09 22:48:30,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-09 22:48:30,969 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:30,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:48:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-09 22:48:30,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2022-01-09 22:48:30,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 84 states have internal predecessors, (107), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-09 22:48:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 135 transitions. [2022-01-09 22:48:30,991 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 135 transitions. Word has length 32 [2022-01-09 22:48:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:30,992 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 135 transitions. [2022-01-09 22:48:30,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 22:48:30,992 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 135 transitions. [2022-01-09 22:48:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-09 22:48:30,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:30,996 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:31,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-09 22:48:31,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:31,197 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash 346264643, now seen corresponding path program 1 times [2022-01-09 22:48:31,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:31,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619815631] [2022-01-09 22:48:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:31,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:31,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:48:31,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673239188] [2022-01-09 22:48:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:31,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:31,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:31,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:48:31,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-09 22:48:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:48:31,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-09 22:48:31,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:48:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-09 22:48:31,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:48:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-09 22:48:31,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:31,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619815631] [2022-01-09 22:48:31,466 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:48:31,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673239188] [2022-01-09 22:48:31,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673239188] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-09 22:48:31,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 22:48:31,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-01-09 22:48:31,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526142864] [2022-01-09 22:48:31,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:48:31,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 22:48:31,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 22:48:31,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-09 22:48:31,467 INFO L87 Difference]: Start difference. First operand 105 states and 135 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:31,603 INFO L93 Difference]: Finished difference Result 112 states and 141 transitions. [2022-01-09 22:48:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 22:48:31,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-01-09 22:48:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:31,604 INFO L225 Difference]: With dead ends: 112 [2022-01-09 22:48:31,604 INFO L226 Difference]: Without dead ends: 92 [2022-01-09 22:48:31,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-09 22:48:31,605 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:31,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 94 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:48:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-09 22:48:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 58. [2022-01-09 22:48:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 47 states have internal predecessors, (60), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 22:48:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2022-01-09 22:48:31,611 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 32 [2022-01-09 22:48:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:31,612 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2022-01-09 22:48:31,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:48:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2022-01-09 22:48:31,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-09 22:48:31,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:31,612 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:31,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-09 22:48:31,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:31,828 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:31,828 INFO L85 PathProgramCache]: Analyzing trace with hash 136508765, now seen corresponding path program 2 times [2022-01-09 22:48:31,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:31,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138781876] [2022-01-09 22:48:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:31,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:31,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:48:31,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965585248] [2022-01-09 22:48:31,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 22:48:31,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:31,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:31,844 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:48:31,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-09 22:48:31,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 22:48:31,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:48:31,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-09 22:48:31,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:48:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:48:31,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:48:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-09 22:48:32,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:48:32,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138781876] [2022-01-09 22:48:32,112 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:48:32,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965585248] [2022-01-09 22:48:32,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965585248] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:48:32,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 22:48:32,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-01-09 22:48:32,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334057869] [2022-01-09 22:48:32,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 22:48:32,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-09 22:48:32,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:48:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-09 22:48:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-01-09 22:48:32,113 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 22:48:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:48:32,228 INFO L93 Difference]: Finished difference Result 132 states and 169 transitions. [2022-01-09 22:48:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-09 22:48:32,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 46 [2022-01-09 22:48:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:48:32,229 INFO L225 Difference]: With dead ends: 132 [2022-01-09 22:48:32,229 INFO L226 Difference]: Without dead ends: 124 [2022-01-09 22:48:32,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-01-09 22:48:32,230 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 129 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:48:32,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 196 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:48:32,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-09 22:48:32,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-01-09 22:48:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.32) internal successors, (132), 101 states have internal predecessors, (132), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-09 22:48:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 155 transitions. [2022-01-09 22:48:32,239 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 155 transitions. Word has length 46 [2022-01-09 22:48:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:48:32,239 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 155 transitions. [2022-01-09 22:48:32,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 22:48:32,239 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 155 transitions. [2022-01-09 22:48:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-09 22:48:32,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:48:32,241 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:32,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-09 22:48:32,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-09 22:48:32,457 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:48:32,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:48:32,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1689445411, now seen corresponding path program 3 times [2022-01-09 22:48:32,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:48:32,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347191484] [2022-01-09 22:48:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:48:32,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:48:32,467 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:48:32,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774040722] [2022-01-09 22:48:32,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 22:48:32,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:32,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:48:32,468 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) [2022-01-09 22:48:32,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-09 22:48:32,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-01-09 22:48:32,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-01-09 22:48:32,774 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-09 22:48:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 22:48:32,854 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-09 22:48:32,854 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-09 22:48:32,854 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 22:48:32,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-09 22:48:33,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:48:33,082 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:48:33,083 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 22:48:33,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:48:33 BoogieIcfgContainer [2022-01-09 22:48:33,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 22:48:33,137 INFO L158 Benchmark]: Toolchain (without parser) took 8111.19ms. Allocated memory was 219.2MB in the beginning and 400.6MB in the end (delta: 181.4MB). Free memory was 162.4MB in the beginning and 305.3MB in the end (delta: -142.9MB). Peak memory consumption was 39.6MB. Max. memory is 8.0GB. [2022-01-09 22:48:33,137 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 219.2MB. Free memory is still 178.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:48:33,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.88ms. Allocated memory is still 219.2MB. Free memory was 162.3MB in the beginning and 188.9MB in the end (delta: -26.6MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-01-09 22:48:33,138 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.03ms. Allocated memory is still 219.2MB. Free memory was 188.9MB in the beginning and 187.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-09 22:48:33,138 INFO L158 Benchmark]: Boogie Preprocessor took 11.80ms. Allocated memory is still 219.2MB. Free memory was 187.4MB in the beginning and 186.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:48:33,138 INFO L158 Benchmark]: RCFGBuilder took 207.66ms. Allocated memory is still 219.2MB. Free memory was 186.3MB in the beginning and 174.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-09 22:48:33,138 INFO L158 Benchmark]: TraceAbstraction took 7670.64ms. Allocated memory was 219.2MB in the beginning and 400.6MB in the end (delta: 181.4MB). Free memory was 174.3MB in the beginning and 305.3MB in the end (delta: -131.0MB). Peak memory consumption was 51.9MB. Max. memory is 8.0GB. [2022-01-09 22:48:33,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 219.2MB. Free memory is still 178.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.88ms. Allocated memory is still 219.2MB. Free memory was 162.3MB in the beginning and 188.9MB in the end (delta: -26.6MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.03ms. Allocated memory is still 219.2MB. Free memory was 188.9MB in the beginning and 187.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.80ms. Allocated memory is still 219.2MB. Free memory was 187.4MB in the beginning and 186.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 207.66ms. Allocated memory is still 219.2MB. Free memory was 186.3MB in the beginning and 174.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 7670.64ms. Allocated memory was 219.2MB in the beginning and 400.6MB in the end (delta: 181.4MB). Free memory was 174.3MB in the beginning and 305.3MB in the end (delta: -131.0MB). Peak memory consumption was 51.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [a=1024, b=1024, counter=0, p=1, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=1024, b=1024, counter=1, counter++=0, p=1, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=1024, b=1024, counter=1, p=1, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=1024, b=1024, counter=1, p=1, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=512, b=512, counter=1, p=4, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=512, b=512, counter=2, counter++=1, p=4, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=512, b=512, counter=2, p=4, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=512, b=512, counter=2, p=4, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=256, b=256, counter=2, p=16, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=256, b=256, counter=3, counter++=2, p=16, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=256, b=256, counter=3, p=16, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=256, b=256, counter=3, p=16, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=128, b=128, counter=3, p=64, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=128, b=128, counter=4, counter++=3, p=64, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=128, b=128, counter=4, p=64, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=128, b=128, counter=4, p=64, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=64, b=64, counter=4, p=256, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=64, b=64, counter=5, counter++=4, p=256, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=64, b=64, counter=5, p=256, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=64, b=64, counter=5, p=256, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=32, b=32, counter=5, p=1024, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=32, b=32, counter=6, counter++=5, p=1024, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=32, b=32, counter=6, p=1024, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=32, b=32, counter=6, p=1024, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=16, b=16, counter=6, p=4096, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=16, b=16, counter=7, counter++=6, p=4096, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=16, b=16, counter=7, p=4096, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=16, b=16, counter=7, p=4096, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=8, b=8, counter=7, p=16384, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=8, b=8, counter=8, counter++=7, p=16384, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=8, b=8, counter=8, p=16384, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=8, b=8, counter=8, p=16384, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=4, b=4, counter=8, p=65536, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=4, b=4, counter=9, counter++=8, p=65536, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=4, b=4, counter=9, p=65536, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=4, b=4, counter=9, p=65536, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=2, b=2, counter=9, p=262144, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=2, b=2, counter=10, counter++=9, p=262144, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=2, b=2, counter=10, p=262144, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=2, b=2, counter=10, p=262144, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=1, b=1, counter=10, p=1048576, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=1, b=1, counter=11, counter++=10, p=1048576, q=0, x=1024, y=1024] [L33] COND FALSE !(counter++<10) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [\old(cond)=0, counter=11] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L14] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.6s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 422 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 419 mSDsluCounter, 970 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 731 mSDsCounter, 206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 600 IncrementalHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 206 mSolverCounterUnsat, 239 mSDtfsCounter, 600 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 257 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=10, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 124 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 314 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 1397 SizeOfPredicates, 31 NumberOfNonLiveVariables, 738 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 120/236 InterpolantCoveringCapability, 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 RESULT: Ultimate proved your program to be incorrect! [2022-01-09 22:48:33,151 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...