/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 21:11:27,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 21:11:27,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 21:11:27,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 21:11:27,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 21:11:27,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 21:11:27,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 21:11:27,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 21:11:27,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 21:11:27,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 21:11:27,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 21:11:27,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 21:11:27,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 21:11:27,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 21:11:27,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 21:11:27,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 21:11:27,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 21:11:27,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 21:11:27,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 21:11:27,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 21:11:27,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 21:11:27,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 21:11:27,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 21:11:27,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 21:11:27,115 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 21:11:27,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 21:11:27,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 21:11:27,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 21:11:27,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 21:11:27,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 21:11:27,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 21:11:27,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 21:11:27,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 21:11:27,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 21:11:27,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 21:11:27,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 21:11:27,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 21:11:27,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 21:11:27,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 21:11:27,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:11:27,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 21:11:27,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 21:11:27,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 21:11:27,118 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 21:11:27,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 21:11:27,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 21:11:27,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 21:11:27,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 21:11:27,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 21:11:27,293 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 21:11:27,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c [2022-01-31 21:11:27,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/215d93122/92c374c9d2d64e8398144c781ca0cf86/FLAGfcda1e90e [2022-01-31 21:11:27,727 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 21:11:27,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c [2022-01-31 21:11:27,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/215d93122/92c374c9d2d64e8398144c781ca0cf86/FLAGfcda1e90e [2022-01-31 21:11:27,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/215d93122/92c374c9d2d64e8398144c781ca0cf86 [2022-01-31 21:11:27,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 21:11:27,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 21:11:27,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 21:11:27,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 21:11:27,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 21:11:27,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bf8176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27, skipping insertion in model container [2022-01-31 21:11:27,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 21:11:27,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 21:11:27,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c[406,419] [2022-01-31 21:11:27,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:11:27,892 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 21:11:27,899 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c[406,419] [2022-01-31 21:11:27,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:11:27,908 INFO L208 MainTranslator]: Completed translation [2022-01-31 21:11:27,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27 WrapperNode [2022-01-31 21:11:27,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 21:11:27,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 21:11:27,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 21:11:27,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 21:11:27,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 21:11:27,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 21:11:27,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 21:11:27,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 21:11:27,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27" (1/1) ... [2022-01-31 21:11:27,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:11:27,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 21:11:27,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 21:11:27,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 21:11:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 21:11:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 21:11:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 21:11:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 21:11:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 21:11:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 21:11:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 21:11:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 21:11:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 21:11:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 21:11:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 21:11:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 21:11:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-01-31 21:11:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 21:11:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 21:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 21:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 21:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 21:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 21:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 21:11:28,063 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 21:11:28,064 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 21:11:28,152 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 21:11:28,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 21:11:28,156 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 21:11:28,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:11:28 BoogieIcfgContainer [2022-01-31 21:11:28,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 21:11:28,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 21:11:28,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 21:11:28,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 21:11:28,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:11:27" (1/3) ... [2022-01-31 21:11:28,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416a829c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:11:28, skipping insertion in model container [2022-01-31 21:11:28,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:11:27" (2/3) ... [2022-01-31 21:11:28,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416a829c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:11:28, skipping insertion in model container [2022-01-31 21:11:28,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:11:28" (3/3) ... [2022-01-31 21:11:28,162 INFO L111 eAbstractionObserver]: Analyzing ICFG iftelse.c [2022-01-31 21:11:28,165 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 21:11:28,165 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 21:11:28,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 21:11:28,210 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=JORDAN [2022-01-31 21:11:28,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 21:11:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 21:11:28,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 21:11:28,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:11:28,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:11:28,232 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:11:28,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:11:28,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1034116429, now seen corresponding path program 1 times [2022-01-31 21:11:28,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:11:28,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269136303] [2022-01-31 21:11:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:11:28,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:11:28,299 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:11:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:11:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:11:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:11:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:11:28,699 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:11:28,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269136303] [2022-01-31 21:11:28,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1269136303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:11:28,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:11:28,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 21:11:28,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56836416] [2022-01-31 21:11:28,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:11:28,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 21:11:28,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:11:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 21:11:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-31 21:11:28,730 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:11:31,000 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 [] [2022-01-31 21:11:33,154 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 [] [2022-01-31 21:11:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:11:33,228 INFO L93 Difference]: Finished difference Result 53 states and 73 transitions. [2022-01-31 21:11:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 21:11:33,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-31 21:11:33,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:11:33,234 INFO L225 Difference]: With dead ends: 53 [2022-01-31 21:11:33,234 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 21:11:33,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-31 21:11:33,243 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:11:33,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 55 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 132 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-31 21:11:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 21:11:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-31 21:11:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 21:11:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-01-31 21:11:33,267 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2022-01-31 21:11:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:11:33,268 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-01-31 21:11:33,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:11:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-01-31 21:11:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 21:11:33,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:11:33,269 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:11:33,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 21:11:33,269 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:11:33,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:11:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash -244126219, now seen corresponding path program 1 times [2022-01-31 21:11:33,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:11:33,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107106840] [2022-01-31 21:11:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:11:33,398 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:11:33,399 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:11:33,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:11:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:11:33,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:11:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:11:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:11:33,675 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:11:33,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107106840] [2022-01-31 21:11:33,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [107106840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:11:33,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:11:33,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 21:11:33,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112714896] [2022-01-31 21:11:33,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:11:33,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 21:11:33,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:11:33,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 21:11:33,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-31 21:11:33,683 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:11:35,786 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 [] [2022-01-31 21:11:37,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 21:11:40,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 21:11:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:11:40,158 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-01-31 21:11:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 21:11:40,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-01-31 21:11:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:11:40,159 INFO L225 Difference]: With dead ends: 37 [2022-01-31 21:11:40,159 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 21:11:40,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-31 21:11:40,160 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-31 21:11:40,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 39 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 3 Unknown, 0 Unchecked, 6.4s Time] [2022-01-31 21:11:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 21:11:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-31 21:11:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 21:11:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-01-31 21:11:40,166 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2022-01-31 21:11:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:11:40,166 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-01-31 21:11:40,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 21:11:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-01-31 21:11:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 21:11:40,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:11:40,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:11:40,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 21:11:40,168 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:11:40,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:11:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 722095884, now seen corresponding path program 1 times [2022-01-31 21:11:40,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:11:40,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723911352] [2022-01-31 21:11:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:13:47,467 WARN L228 SmtUtils]: Spent 2.12m on a formula simplification. DAG size of input: 74 DAG size of output: 72 (called from [L 564] de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.jordan.JordanLoopAcceleration.buildAccelerationFormula) [2022-01-31 21:13:47,470 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:13:47,470 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:13:47,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:13:47,480 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= .v_it_2.0 (+ (- main_~i~0_6) (* 2 (div (+ main_~i~0_6 .v_it_2.0 1) 2)) (- 1)))) [2022-01-31 21:13:47,483 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~n~0_5 (* (- 4294967296) (div main_~n~0_5 4294967296)) (- main_~i~0_6) (* (- 3) .v_it_2.0) (* 4294967296 (div (+ main_~i~0_6 (* 3 .v_it_2.0)) 4294967296))) 0)) [2022-01-31 21:13:47,483 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (let ((.cse1 (* 3 .v_it_2.0))) (let ((.cse0 (div (+ main_~i~0_6 .cse1 (* (- 4294967296) (div (+ main_~i~0_6 .cse1 3) 4294967296)) 3) 2))) (+ .cse0 (* (- 4294967296) (div .cse0 4294967296)) (- main_~j~0_6) (* (- 3) .v_it_2.0) (* 4294967296 (div (+ main_~j~0_6 .cse1 3) 4294967296)) (- 3)))) 0) [2022-01-31 21:13:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:13:47,577 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= .v_it_2.2 (+ (- main_~i~0_6) (* 2 (div (+ main_~i~0_6 .v_it_2.2 1) 2)) (- 1)))) [2022-01-31 21:13:47,577 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~n~0_5 (* (- 4294967296) (div main_~n~0_5 4294967296)) (- main_~i~0_6) (* (- 3) .v_it_2.2) (* 4294967296 (div (+ main_~i~0_6 (* 3 .v_it_2.2)) 4294967296))) 0)) [2022-01-31 21:13:47,578 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (let ((.cse1 (* 3 .v_it_2.2))) (let ((.cse0 (div (+ main_~i~0_6 .cse1 (* (- 4294967296) (div (+ main_~i~0_6 .cse1 3) 4294967296)) 3) 2))) (+ .cse0 (* (- 4294967296) (div .cse0 4294967296)) (- main_~j~0_6) (* (- 3) .v_it_2.2) (* 4294967296 (div (+ main_~j~0_6 .cse1 3) 4294967296)) (- 3)))) 0) [2022-01-31 21:13:47,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:13:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:13:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:14:03,050 WARN L228 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 51 DAG size of output: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 21:14:18,265 WARN L860 $PredicateComparison]: unable to prove that (and (<= (mod (div (mod c_main_~i~0 4294967296) 2) 4294967296) (mod c_main_~j~0 4294967296)) (exists ((aux_mod_v_main_~n~0_BEFORE_RETURN_1_44 Int)) (and (< aux_mod_v_main_~n~0_BEFORE_RETURN_1_44 4294967296) (< 0 aux_mod_v_main_~n~0_BEFORE_RETURN_1_44)))) is different from true [2022-01-31 21:14:18,267 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:14:18,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723911352] [2022-01-31 21:14:18,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1723911352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:14:18,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:14:18,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 21:14:18,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301008160] [2022-01-31 21:14:18,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:14:18,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 21:14:18,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:14:18,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 21:14:18,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=162, Unknown=8, NotChecked=26, Total=240 [2022-01-31 21:14:18,269 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 21:14:43,956 WARN L228 SmtUtils]: Spent 25.64s on a formula simplification. DAG size of input: 66 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 21:14:46,040 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 [] [2022-01-31 21:14:48,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 21:14:50,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 21:14:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:14:50,330 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2022-01-31 21:14:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 21:14:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-01-31 21:14:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:14:50,456 INFO L225 Difference]: With dead ends: 44 [2022-01-31 21:14:50,456 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 21:14:50,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=78, Invalid=298, Unknown=8, NotChecked=36, Total=420 [2022-01-31 21:14:50,457 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-31 21:14:50,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 52 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 3 Unknown, 48 Unchecked, 6.3s Time] [2022-01-31 21:14:50,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 21:14:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2022-01-31 21:14:50,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 21:14:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-31 21:14:50,463 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2022-01-31 21:14:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:14:50,464 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-31 21:14:50,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 21:14:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-31 21:14:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 21:14:50,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:14:50,465 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:14:50,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 21:14:50,466 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:14:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:14:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash 779354186, now seen corresponding path program 1 times [2022-01-31 21:14:50,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:14:50,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602756701] [2022-01-31 21:14:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:16:44,706 WARN L228 SmtUtils]: Spent 1.90m on a formula simplification. DAG size of input: 74 DAG size of output: 72 (called from [L 564] de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.jordan.JordanLoopAcceleration.buildAccelerationFormula) [2022-01-31 21:16:44,707 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 21:16:44,707 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:16:44,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:16:44,713 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= .v_it_3.0 (+ (- main_~i~0_6) (* 2 (div (+ main_~i~0_6 .v_it_3.0 1) 2)) (- 1)))) [2022-01-31 21:16:44,714 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (let ((.cse1 (* 3 .v_it_3.0))) (let ((.cse0 (div (+ main_~i~0_6 .cse1 (* (- 4294967296) (div (+ main_~i~0_6 .cse1 3) 4294967296)) 3) 2))) (+ .cse0 (* (- 4294967296) (div .cse0 4294967296)) (- main_~j~0_6) (* (- 3) .v_it_3.0) (* 4294967296 (div (+ main_~j~0_6 .cse1 3) 4294967296)) (- 3)))) 0) [2022-01-31 21:16:44,714 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~n~0_5 (* (- 4294967296) (div main_~n~0_5 4294967296)) (- main_~i~0_6) (* (- 3) .v_it_3.0) (* 4294967296 (div (+ main_~i~0_6 (* 3 .v_it_3.0)) 4294967296))) 0)) [2022-01-31 21:16:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:16:44,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 21:16:44,787 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No Interpolants at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.getInterpolants(InterpolatingTraceCheckCraig.java:273) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:179) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:126) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:264) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-31 21:16:44,793 INFO L158 Benchmark]: Toolchain (without parser) took 317051.10ms. Allocated memory was 220.2MB in the beginning and 291.5MB in the end (delta: 71.3MB). Free memory was 166.9MB in the beginning and 150.8MB in the end (delta: 16.1MB). Peak memory consumption was 88.2MB. Max. memory is 8.0GB. [2022-01-31 21:16:44,793 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 220.2MB. Free memory is still 182.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 21:16:44,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.18ms. Allocated memory is still 220.2MB. Free memory was 166.7MB in the beginning and 193.1MB in the end (delta: -26.4MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2022-01-31 21:16:44,793 INFO L158 Benchmark]: Boogie Preprocessor took 26.68ms. Allocated memory is still 220.2MB. Free memory was 193.1MB in the beginning and 191.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 21:16:44,793 INFO L158 Benchmark]: RCFGBuilder took 220.97ms. Allocated memory is still 220.2MB. Free memory was 191.6MB in the beginning and 181.6MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-31 21:16:44,794 INFO L158 Benchmark]: TraceAbstraction took 316634.05ms. Allocated memory was 220.2MB in the beginning and 291.5MB in the end (delta: 71.3MB). Free memory was 181.1MB in the beginning and 150.8MB in the end (delta: 30.3MB). Peak memory consumption was 102.1MB. Max. memory is 8.0GB. [2022-01-31 21:16:44,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 220.2MB. Free memory is still 182.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 166.18ms. Allocated memory is still 220.2MB. Free memory was 166.7MB in the beginning and 193.1MB in the end (delta: -26.4MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.68ms. Allocated memory is still 220.2MB. Free memory was 193.1MB in the beginning and 191.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 220.97ms. Allocated memory is still 220.2MB. Free memory was 191.6MB in the beginning and 181.6MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 316634.05ms. Allocated memory was 220.2MB in the beginning and 291.5MB in the end (delta: 71.3MB). Free memory was 181.1MB in the beginning and 150.8MB in the end (delta: 30.3MB). Peak memory consumption was 102.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No Interpolants de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No Interpolants: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.getInterpolants(InterpolatingTraceCheckCraig.java:273) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-31 21:16:44,829 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...