/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 10:02:10,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 10:02:10,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 10:02:10,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 10:02:10,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 10:02:10,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 10:02:10,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 10:02:10,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-19 10:02:10,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 10:02:10,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 10:02:10,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 10:02:10,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 10:02:10,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 10:02:10,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 10:02:10,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 10:02:10,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 10:02:10,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 10:02:10,112 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 10:02:10,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 10:02:10,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 10:02:10,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 10:02:10,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 10:02:10,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 10:02:10,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 10:02:10,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 10:02:10,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 10:02:10,113 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 10:02:10,113 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 10:02:10,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 10:02:10,113 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 10:02:10,113 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 10:02:10,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 10:02:10,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 10:02:10,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 10:02:10,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 10:02:10,305 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 10:02:10,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound1.i [2022-03-19 10:02:10,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6ad0e1b/884eed30645a48c288e476d0600d6700/FLAG92162e847 [2022-03-19 10:02:10,648 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 10:02:10,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound1.i [2022-03-19 10:02:10,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6ad0e1b/884eed30645a48c288e476d0600d6700/FLAG92162e847 [2022-03-19 10:02:11,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6ad0e1b/884eed30645a48c288e476d0600d6700 [2022-03-19 10:02:11,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 10:02:11,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 10:02:11,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 10:02:11,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 10:02:11,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 10:02:11,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1385ca67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11, skipping insertion in model container [2022-03-19 10:02:11,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 10:02:11,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 10:02:11,350 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/divbin2_valuebound1.i[951,964] [2022-03-19 10:02:11,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 10:02:11,369 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 10:02:11,378 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/divbin2_valuebound1.i[951,964] [2022-03-19 10:02:11,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 10:02:11,400 INFO L208 MainTranslator]: Completed translation [2022-03-19 10:02:11,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11 WrapperNode [2022-03-19 10:02:11,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 10:02:11,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 10:02:11,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 10:02:11,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 10:02:11,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 10:02:11,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 10:02:11,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 10:02:11,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 10:02:11,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11" (1/1) ... [2022-03-19 10:02:11,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 10:02:11,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 10:02:11,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 10:02:11,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 10:02:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 10:02:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 10:02:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 10:02:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-19 10:02:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 10:02:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 10:02:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 10:02:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 10:02:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-19 10:02:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-19 10:02:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 10:02:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 10:02:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-19 10:02:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-19 10:02:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 10:02:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 10:02:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 10:02:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 10:02:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 10:02:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 10:02:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 10:02:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 10:02:11,567 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 10:02:11,568 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 10:02:11,690 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 10:02:11,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 10:02:11,694 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-19 10:02:11,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:02:11 BoogieIcfgContainer [2022-03-19 10:02:11,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 10:02:11,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 10:02:11,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 10:02:11,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 10:02:11,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 10:02:11" (1/3) ... [2022-03-19 10:02:11,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e08975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:02:11, skipping insertion in model container [2022-03-19 10:02:11,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:02:11" (2/3) ... [2022-03-19 10:02:11,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e08975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:02:11, skipping insertion in model container [2022-03-19 10:02:11,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:02:11" (3/3) ... [2022-03-19 10:02:11,712 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound1.i [2022-03-19 10:02:11,715 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 10:02:11,715 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 10:02:11,777 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 10:02:11,781 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 10:02:11,781 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 10:02:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-19 10:02:11,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-19 10:02:11,799 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 10:02:11,799 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 10:02:11,800 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 10:02:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 10:02:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1171333446, now seen corresponding path program 1 times [2022-03-19 10:02:11,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 10:02:11,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [467582080] [2022-03-19 10:02:11,821 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 10:02:11,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1171333446, now seen corresponding path program 2 times [2022-03-19 10:02:11,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 10:02:11,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638730257] [2022-03-19 10:02:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 10:02:11,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 10:02:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 10:02:11,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 10:02:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 10:02:11,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 10:02:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 10:02:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 10:02:11,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 10:02:11,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638730257] [2022-03-19 10:02:11,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638730257] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 10:02:11,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 10:02:11,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 10:02:11,978 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 10:02:11,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [467582080] [2022-03-19 10:02:11,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [467582080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 10:02:11,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 10:02:11,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 10:02:11,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88719851] [2022-03-19 10:02:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 10:02:11,981 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 10:02:11,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 10:02:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 10:02:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 10:02:12,006 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 10:02:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 10:02:12,063 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2022-03-19 10:02:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 10:02:12,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-03-19 10:02:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 10:02:12,071 INFO L225 Difference]: With dead ends: 51 [2022-03-19 10:02:12,071 INFO L226 Difference]: Without dead ends: 25 [2022-03-19 10:02:12,073 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 10:02:12,079 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 10:02:12,081 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 10:02:12,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-19 10:02:12,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-03-19 10:02:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 10:02:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-03-19 10:02:12,111 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2022-03-19 10:02:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 10:02:12,111 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-03-19 10:02:12,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 10:02:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-03-19 10:02:12,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-19 10:02:12,112 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 10:02:12,112 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 10:02:12,113 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 10:02:12,113 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 10:02:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 10:02:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash -73515422, now seen corresponding path program 1 times [2022-03-19 10:02:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 10:02:12,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [110040314] [2022-03-19 10:02:12,121 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 10:02:12,122 INFO L85 PathProgramCache]: Analyzing trace with hash -73515422, now seen corresponding path program 2 times [2022-03-19 10:02:12,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 10:02:12,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453082352] [2022-03-19 10:02:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 10:02:12,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 10:02:12,140 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 10:02:12,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206965992] [2022-03-19 10:02:12,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 10:02:12,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 10:02:12,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 10:02:12,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 10:02:12,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 10:02:12,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 10:02:12,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 10:02:12,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-19 10:02:12,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 10:02:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 10:02:12,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 10:02:12,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 10:02:12,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453082352] [2022-03-19 10:02:12,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 10:02:12,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206965992] [2022-03-19 10:02:12,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206965992] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 10:02:12,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 10:02:12,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 10:02:12,384 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 10:02:12,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [110040314] [2022-03-19 10:02:12,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [110040314] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 10:02:12,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 10:02:12,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 10:02:12,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403537413] [2022-03-19 10:02:12,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 10:02:12,385 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 10:02:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 10:02:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 10:02:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-19 10:02:12,386 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 10:02:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 10:02:12,490 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-03-19 10:02:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 10:02:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-03-19 10:02:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 10:02:12,492 INFO L225 Difference]: With dead ends: 37 [2022-03-19 10:02:12,492 INFO L226 Difference]: Without dead ends: 34 [2022-03-19 10:02:12,492 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-19 10:02:12,493 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 10:02:12,493 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 116 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 10:02:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-19 10:02:12,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-03-19 10:02:12,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-19 10:02:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-03-19 10:02:12,527 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2022-03-19 10:02:12,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 10:02:12,527 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-03-19 10:02:12,527 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 10:02:12,527 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-03-19 10:02:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-19 10:02:12,528 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 10:02:12,528 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 10:02:12,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-19 10:02:12,739 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 10:02:12,740 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 10:02:12,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 10:02:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1211706883, now seen corresponding path program 1 times [2022-03-19 10:02:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 10:02:12,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [306823502] [2022-03-19 10:02:12,790 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 10:02:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2069278597, now seen corresponding path program 1 times [2022-03-19 10:02:12,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 10:02:12,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468059012] [2022-03-19 10:02:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 10:02:12,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 10:02:12,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 10:02:12,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381235326] [2022-03-19 10:02:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 10:02:12,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 10:02:12,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 10:02:12,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 10:02:12,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 10:02:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 10:02:12,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-19 10:02:12,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 10:02:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 10:02:13,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 10:02:13,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 10:02:13,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468059012] [2022-03-19 10:02:13,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 10:02:13,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381235326] [2022-03-19 10:02:13,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381235326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 10:02:13,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 10:02:13,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 10:02:13,236 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 10:02:13,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [306823502] [2022-03-19 10:02:13,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [306823502] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 10:02:13,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 10:02:13,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 10:02:13,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993383960] [2022-03-19 10:02:13,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 10:02:13,237 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 10:02:13,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 10:02:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 10:02:13,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-19 10:02:13,238 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 10:02:15,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 10:02:17,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 10:02:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 10:02:17,600 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-03-19 10:02:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 10:02:17,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-03-19 10:02:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 10:02:17,602 INFO L225 Difference]: With dead ends: 46 [2022-03-19 10:02:17,602 INFO L226 Difference]: Without dead ends: 32 [2022-03-19 10:02:17,602 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-19 10:02:17,603 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-19 10:02:17,603 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 171 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-03-19 10:02:17,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-19 10:02:17,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-19 10:02:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-19 10:02:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-03-19 10:02:17,608 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 21 [2022-03-19 10:02:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 10:02:17,609 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-03-19 10:02:17,609 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 10:02:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-03-19 10:02:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-19 10:02:17,610 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 10:02:17,610 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 10:02:17,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-19 10:02:17,810 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-19 10:02:17,811 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 10:02:17,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 10:02:17,811 INFO L85 PathProgramCache]: Analyzing trace with hash 947727214, now seen corresponding path program 1 times [2022-03-19 10:02:17,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 10:02:17,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2086171736] [2022-03-19 10:02:17,812 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 10:02:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash 947727214, now seen corresponding path program 2 times [2022-03-19 10:02:17,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 10:02:17,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465651940] [2022-03-19 10:02:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 10:02:17,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 10:02:17,821 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 10:02:17,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203133468] [2022-03-19 10:02:17,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 10:02:17,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 10:02:17,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 10:02:17,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 10:02:17,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 10:02:17,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 10:02:17,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 10:02:17,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 10:02:17,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 10:02:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 10:02:17,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 10:02:17,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 10:02:17,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465651940] [2022-03-19 10:02:17,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 10:02:17,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203133468] [2022-03-19 10:02:17,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203133468] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 10:02:17,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 10:02:17,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 10:02:17,939 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 10:02:17,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2086171736] [2022-03-19 10:02:17,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2086171736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 10:02:17,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 10:02:17,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 10:02:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346880180] [2022-03-19 10:02:17,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 10:02:17,940 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 10:02:17,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 10:02:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 10:02:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 10:02:17,940 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-19 10:02:17,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 10:02:17,946 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-03-19 10:02:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 10:02:17,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-03-19 10:02:17,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 10:02:17,947 INFO L225 Difference]: With dead ends: 32 [2022-03-19 10:02:17,947 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 10:02:17,948 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 10:02:17,948 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 10:02:17,949 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 10:02:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 10:02:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 10:02:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-19 10:02:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 10:02:17,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-03-19 10:02:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 10:02:17,950 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 10:02:17,950 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-19 10:02:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 10:02:17,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 10:02:17,952 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 10:02:17,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 10:02:18,164 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 10:02:18,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-19 10:02:18,637 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-03-19 10:02:18,637 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-03-19 10:02:18,637 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-03-19 10:02:18,637 INFO L878 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-03-19 10:02:18,637 INFO L878 garLoopResultBuilder]: At program point L16-2(lines 15 17) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-19 10:02:18,637 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 15 17) the Hoare annotation is: true [2022-03-19 10:02:18,638 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 15 17) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-19 10:02:18,638 INFO L885 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-03-19 10:02:18,638 INFO L878 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-03-19 10:02:18,638 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 25 50) the Hoare annotation is: true [2022-03-19 10:02:18,638 INFO L885 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: true [2022-03-19 10:02:18,638 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 25 50) the Hoare annotation is: true [2022-03-19 10:02:18,638 INFO L878 garLoopResultBuilder]: At program point L38-1(lines 38 47) the Hoare annotation is: (and (= main_~b~0 1) (= main_~A~0 main_~r~0) (< (mod main_~r~0 4294967296) (mod main_~b~0 4294967296)) (= main_~q~0 0)) [2022-03-19 10:02:18,638 INFO L878 garLoopResultBuilder]: At program point L34-2(lines 34 37) the Hoare annotation is: (let ((.cse5 (div (- main_~b~0) (- 2))) (.cse6 (mod main_~r~0 4294967296))) (let ((.cse1 (<= (mod main_~A~0 4294967296) 1)) (.cse0 (= main_~A~0 main_~r~0)) (.cse3 (<= (mod .cse5 4294967296) .cse6)) (.cse4 (= (mod main_~b~0 2) 0)) (.cse2 (= main_~q~0 0))) (or (and .cse0 .cse1 (= main_~B~0 main_~b~0) .cse2 (= main_~B~0 1)) (and .cse0 (= (div (* (- 1) main_~b~0) (- 2)) 1) .cse3 .cse1 .cse4 .cse2) (and (= main_~r~0 0) .cse0 .cse3 .cse4 (<= (mod (div (- .cse5) (- 2)) 4294967296) .cse6) .cse2)))) [2022-03-19 10:02:18,638 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 25 50) the Hoare annotation is: true [2022-03-19 10:02:18,639 INFO L878 garLoopResultBuilder]: At program point L43(lines 43 46) the Hoare annotation is: false [2022-03-19 10:02:18,639 INFO L878 garLoopResultBuilder]: At program point L43-2(lines 25 50) the Hoare annotation is: (and (= main_~A~0 main_~r~0) (< (mod main_~r~0 4294967296) (mod main_~b~0 4294967296)) (= main_~B~0 main_~b~0) (= main_~q~0 0) (= main_~B~0 1)) [2022-03-19 10:02:18,639 INFO L878 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (= main_~A~0 main_~r~0) (< (mod main_~r~0 4294967296) (mod main_~b~0 4294967296)) (= main_~B~0 main_~b~0) (= main_~q~0 0) (= main_~B~0 1)) [2022-03-19 10:02:18,639 INFO L878 garLoopResultBuilder]: At program point L39-1(lines 38 47) the Hoare annotation is: (and (= main_~A~0 main_~r~0) (< (mod main_~r~0 4294967296) (mod main_~b~0 4294967296)) (= main_~B~0 main_~b~0) (= main_~q~0 0) (= main_~B~0 1)) [2022-03-19 10:02:18,639 INFO L878 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (= main_~A~0 main_~r~0)) (.cse1 (= main_~q~0 0))) (or (and .cse0 (<= (mod main_~A~0 4294967296) 1) (= main_~B~0 main_~b~0) .cse1 (= main_~B~0 1)) (let ((.cse2 (div (- main_~b~0) (- 2))) (.cse3 (mod main_~r~0 4294967296))) (and (= main_~r~0 0) .cse0 (<= (mod .cse2 4294967296) .cse3) (= (mod main_~b~0 2) 0) (<= (mod (div (- .cse2) (- 2)) 4294967296) .cse3) .cse1)))) [2022-03-19 10:02:18,639 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-19 10:02:18,639 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-19 10:02:18,639 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-19 10:02:18,639 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-19 10:02:18,639 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-19 10:02:18,639 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-19 10:02:18,640 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-19 10:02:18,640 INFO L878 garLoopResultBuilder]: At program point L19-2(lines 18 24) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-03-19 10:02:18,640 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 18 24) the Hoare annotation is: true [2022-03-19 10:02:18,640 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 18 24) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-03-19 10:02:18,640 INFO L878 garLoopResultBuilder]: At program point L20(lines 20 21) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-19 10:02:18,640 INFO L878 garLoopResultBuilder]: At program point L19(lines 19 22) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-03-19 10:02:18,640 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-19 10:02:18,642 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1] [2022-03-19 10:02:18,643 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 10:02:18,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 10:02:18 BoogieIcfgContainer [2022-03-19 10:02:18,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 10:02:18,654 INFO L158 Benchmark]: Toolchain (without parser) took 7569.79ms. Allocated memory is still 190.8MB. Free memory was 144.1MB in the beginning and 92.2MB in the end (delta: 52.0MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. [2022-03-19 10:02:18,654 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 190.8MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 10:02:18,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.90ms. Allocated memory is still 190.8MB. Free memory was 144.0MB in the beginning and 169.0MB in the end (delta: -25.1MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-03-19 10:02:18,654 INFO L158 Benchmark]: Boogie Preprocessor took 31.31ms. Allocated memory is still 190.8MB. Free memory was 169.0MB in the beginning and 167.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-19 10:02:18,654 INFO L158 Benchmark]: RCFGBuilder took 261.33ms. Allocated memory is still 190.8MB. Free memory was 167.4MB in the beginning and 156.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-19 10:02:18,655 INFO L158 Benchmark]: TraceAbstraction took 6956.72ms. Allocated memory is still 190.8MB. Free memory was 156.5MB in the beginning and 92.2MB in the end (delta: 64.3MB). Peak memory consumption was 64.7MB. Max. memory is 8.0GB. [2022-03-19 10:02:18,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 190.8MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.90ms. Allocated memory is still 190.8MB. Free memory was 144.0MB in the beginning and 169.0MB in the end (delta: -25.1MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.31ms. Allocated memory is still 190.8MB. Free memory was 169.0MB in the beginning and 167.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 261.33ms. Allocated memory is still 190.8MB. Free memory was 167.4MB in the beginning and 156.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 6956.72ms. Allocated memory is still 190.8MB. Free memory was 156.5MB in the beginning and 92.2MB in the end (delta: 64.3MB). Peak memory consumption was 64.7MB. 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 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 353 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 263 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 90 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 72 PreInvPairs, 99 NumberOfFragments, 302 HoareAnnotationTreeSize, 72 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((A == r && A % 4294967296 <= 1) && B == b) && q == 0) && B == 1) || (((((A == r && -1 * b / -2 == 1) && -b / -2 % 4294967296 <= r % 4294967296) && A % 4294967296 <= 1) && b % 2 == 0) && q == 0)) || (((((r == 0 && A == r) && -b / -2 % 4294967296 <= r % 4294967296) && b % 2 == 0) && -(-b / -2) / -2 % 4294967296 <= r % 4294967296) && q == 0) - ProcedureContractResult [Line: 15]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 25]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 18]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: !(1 <= \old(cond)) || 1 <= cond RESULT: Ultimate proved your program to be correct! [2022-03-19 10:02:18,687 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...