/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/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 19:58:09,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 19:58:09,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 19:58:09,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 19:58:09,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 19:58:09,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 19:58:09,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 19:58:09,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-06 19:58:09,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 19:58:09,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 19:58:09,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 19:58:09,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 19:58:09,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 19:58:09,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 19:58:09,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 19:58:09,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 19:58:09,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 19:58:09,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 19:58:09,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 19:58:09,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 19:58:09,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 19:58:09,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 19:58:09,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 19:58:09,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 19:58:09,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 19:58:09,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 19:58:09,325 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 19:58:09,325 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 19:58:09,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 19:58:09,325 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-06 19:58:09,326 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 19:58:09,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 19:58:09,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 19:58:09,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 19:58:09,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 19:58:09,476 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 19:58:09,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2022-04-06 19:58:09,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8075e6fd0/a63c7f2b923746c6856664bc6059fca7/FLAG3680da264 [2022-04-06 19:58:09,856 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 19:58:09,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2022-04-06 19:58:09,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8075e6fd0/a63c7f2b923746c6856664bc6059fca7/FLAG3680da264 [2022-04-06 19:58:09,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8075e6fd0/a63c7f2b923746c6856664bc6059fca7 [2022-04-06 19:58:09,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 19:58:09,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 19:58:09,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 19:58:09,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 19:58:09,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 19:58:09,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:58:09" (1/1) ... [2022-04-06 19:58:09,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ad73a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:09, skipping insertion in model container [2022-04-06 19:58:09,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:58:09" (1/1) ... [2022-04-06 19:58:09,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 19:58:09,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 19:58:09,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2022-04-06 19:58:10,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 19:58:10,015 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 19:58:10,022 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2022-04-06 19:58:10,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 19:58:10,032 INFO L208 MainTranslator]: Completed translation [2022-04-06 19:58:10,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10 WrapperNode [2022-04-06 19:58:10,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 19:58:10,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 19:58:10,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 19:58:10,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 19:58:10,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10" (1/1) ... [2022-04-06 19:58:10,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10" (1/1) ... [2022-04-06 19:58:10,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10" (1/1) ... [2022-04-06 19:58:10,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10" (1/1) ... [2022-04-06 19:58:10,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10" (1/1) ... [2022-04-06 19:58:10,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10" (1/1) ... [2022-04-06 19:58:10,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10" (1/1) ... [2022-04-06 19:58:10,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 19:58:10,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 19:58:10,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 19:58:10,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 19:58:10,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10" (1/1) ... [2022-04-06 19:58:10,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 19:58:10,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:58:10,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 19:58:10,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 19:58:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 19:58:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 19:58:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 19:58:10,102 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 19:58:10,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 19:58:10,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 19:58:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 19:58:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 19:58:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 19:58:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 19:58:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 19:58:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 19:58:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 19:58:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 19:58:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 19:58:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 19:58:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 19:58:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 19:58:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 19:58:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 19:58:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 19:58:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 19:58:10,148 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 19:58:10,149 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 19:58:10,253 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 19:58:10,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 19:58:10,257 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 19:58:10,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:58:10 BoogieIcfgContainer [2022-04-06 19:58:10,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 19:58:10,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 19:58:10,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 19:58:10,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 19:58:10,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 07:58:09" (1/3) ... [2022-04-06 19:58:10,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be83930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:58:10, skipping insertion in model container [2022-04-06 19:58:10,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:58:10" (2/3) ... [2022-04-06 19:58:10,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be83930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:58:10, skipping insertion in model container [2022-04-06 19:58:10,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:58:10" (3/3) ... [2022-04-06 19:58:10,283 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2022-04-06 19:58:10,286 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 19:58:10,286 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 19:58:10,328 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 19:58:10,332 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 19:58:10,332 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 19:58:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 19:58:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-06 19:58:10,347 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:58:10,348 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:58:10,348 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:58:10,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:58:10,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1180455853, now seen corresponding path program 1 times [2022-04-06 19:58:10,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:58:10,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [182545338] [2022-04-06 19:58:10,363 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 19:58:10,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1180455853, now seen corresponding path program 2 times [2022-04-06 19:58:10,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:58:10,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302475973] [2022-04-06 19:58:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:58:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:58:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:10,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:58:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:58:10,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:58:10,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302475973] [2022-04-06 19:58:10,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302475973] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:58:10,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:58:10,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 19:58:10,571 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:58:10,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [182545338] [2022-04-06 19:58:10,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [182545338] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:58:10,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:58:10,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 19:58:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508994080] [2022-04-06 19:58:10,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:58:10,575 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 19:58:10,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:58:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 19:58:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-04-06 19:58:10,599 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-04-06 19:58:10,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:58:10,778 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2022-04-06 19:58:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:58:10,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 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 19 [2022-04-06 19:58:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:58:10,783 INFO L225 Difference]: With dead ends: 52 [2022-04-06 19:58:10,783 INFO L226 Difference]: Without dead ends: 29 [2022-04-06 19:58:10,790 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:58:10,793 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 50 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:58:10,794 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 60 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:58:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-06 19:58:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-06 19:58:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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) [2022-04-06 19:58:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-04-06 19:58:10,817 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2022-04-06 19:58:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:58:10,817 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-04-06 19:58:10,817 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-04-06 19:58:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-04-06 19:58:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-06 19:58:10,818 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:58:10,818 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:58:10,818 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 19:58:10,818 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:58:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:58:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash -107986180, now seen corresponding path program 1 times [2022-04-06 19:58:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:58:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1905855234] [2022-04-06 19:58:10,820 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 19:58:10,820 INFO L85 PathProgramCache]: Analyzing trace with hash -107986180, now seen corresponding path program 2 times [2022-04-06 19:58:10,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:58:10,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386496476] [2022-04-06 19:58:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:58:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:58:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:10,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:58:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:10,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:58:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:58:10,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:58:10,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386496476] [2022-04-06 19:58:10,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386496476] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:58:10,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:58:10,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 19:58:10,900 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:58:10,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1905855234] [2022-04-06 19:58:10,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1905855234] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:58:10,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:58:10,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 19:58:10,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066475554] [2022-04-06 19:58:10,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:58:10,901 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 19:58:10,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:58:10,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 19:58:10,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-04-06 19:58:10,902 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 19:58:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:58:11,032 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2022-04-06 19:58:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:58:11,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-04-06 19:58:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:58:11,035 INFO L225 Difference]: With dead ends: 39 [2022-04-06 19:58:11,035 INFO L226 Difference]: Without dead ends: 37 [2022-04-06 19:58:11,035 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:58:11,036 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:58:11,036 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 44 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:58:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-06 19:58:11,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-04-06 19:58:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-06 19:58:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-04-06 19:58:11,049 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2022-04-06 19:58:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:58:11,049 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-04-06 19:58:11,050 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 19:58:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-04-06 19:58:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-06 19:58:11,051 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:58:11,052 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:58:11,052 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 19:58:11,053 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:58:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:58:11,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1340590469, now seen corresponding path program 1 times [2022-04-06 19:58:11,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:58:11,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2094175531] [2022-04-06 19:58:11,072 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-06 19:58:11,072 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:58:11,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1340590469, now seen corresponding path program 2 times [2022-04-06 19:58:11,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:58:11,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469231096] [2022-04-06 19:58:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:58:11,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:58:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:58:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:58:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:11,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 19:58:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:58:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 19:58:11,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:58:11,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469231096] [2022-04-06 19:58:11,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469231096] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:58:11,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741433905] [2022-04-06 19:58:11,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:58:11,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:58:11,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:58:11,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:58:11,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 19:58:11,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 19:58:11,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:58:11,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 19:58:11,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:58:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 19:58:11,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:58:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 19:58:11,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741433905] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:58:11,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:58:11,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2022-04-06 19:58:11,747 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:58:11,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2094175531] [2022-04-06 19:58:11,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2094175531] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:58:11,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:58:11,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 19:58:11,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883472373] [2022-04-06 19:58:11,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:58:11,749 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 19:58:11,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:58:11,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 19:58:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-04-06 19:58:11,751 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-06 19:58:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:58:11,935 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2022-04-06 19:58:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 19:58:11,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2022-04-06 19:58:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:58:11,937 INFO L225 Difference]: With dead ends: 48 [2022-04-06 19:58:11,937 INFO L226 Difference]: Without dead ends: 46 [2022-04-06 19:58:11,938 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2022-04-06 19:58:11,942 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 28 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:58:11,948 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 53 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:58:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-06 19:58:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-04-06 19:58:11,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 19:58:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2022-04-06 19:58:11,965 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 37 [2022-04-06 19:58:11,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:58:11,966 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2022-04-06 19:58:11,966 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-06 19:58:11,966 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2022-04-06 19:58:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 19:58:11,969 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:58:11,969 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:58:11,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 19:58:12,183 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:58:12,183 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:58:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:58:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1604703908, now seen corresponding path program 3 times [2022-04-06 19:58:12,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:58:12,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [677719236] [2022-04-06 19:58:12,187 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-06 19:58:12,187 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:58:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1604703908, now seen corresponding path program 4 times [2022-04-06 19:58:12,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:58:12,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776537456] [2022-04-06 19:58:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:58:12,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:58:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:58:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:58:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 19:58:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:58:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-06 19:58:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:12,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-06 19:58:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:58:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-04-06 19:58:12,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:58:12,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776537456] [2022-04-06 19:58:12,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776537456] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:58:12,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647595351] [2022-04-06 19:58:12,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 19:58:12,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:58:12,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:58:12,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:58:12,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 19:58:12,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 19:58:12,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:58:12,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 19:58:12,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:58:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 19:58:12,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 19:58:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 19:58:12,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647595351] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 19:58:12,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 19:58:12,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-04-06 19:58:12,680 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:58:12,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [677719236] [2022-04-06 19:58:12,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [677719236] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:58:12,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:58:12,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:58:12,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771804106] [2022-04-06 19:58:12,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:58:12,681 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:58:12,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:58:12,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:58:12,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-04-06 19:58:12,682 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-06 19:58:12,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:58:12,862 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2022-04-06 19:58:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 19:58:12,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 50 [2022-04-06 19:58:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:58:12,862 INFO L225 Difference]: With dead ends: 45 [2022-04-06 19:58:12,863 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 19:58:12,863 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 19:58:12,864 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:58:12,864 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 56 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:58:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 19:58:12,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 19:58:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 19:58:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 19:58:12,864 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2022-04-06 19:58:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:58:12,865 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 19:58:12,865 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-06 19:58:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 19:58:12,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 19:58:12,867 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 19:58:12,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 19:58:13,083 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,SelfDestructingSolverStorable3 [2022-04-06 19:58:13,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 19:58:13,191 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-04-06 19:58:13,191 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-04-06 19:58:13,191 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-04-06 19:58:13,191 INFO L882 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-04-06 19:58:13,192 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-04-06 19:58:13,192 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-04-06 19:58:13,192 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-04-06 19:58:13,192 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 24 56) the Hoare annotation is: true [2022-04-06 19:58:13,192 INFO L878 garLoopResultBuilder]: At program point L40(lines 25 56) the Hoare annotation is: (<= 1 main_~leader_len~0) [2022-04-06 19:58:13,192 INFO L885 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: true [2022-04-06 19:58:13,192 INFO L878 garLoopResultBuilder]: At program point L49-2(lines 49 53) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 2 (* main_~i~0 2))) (<= 1 main_~p~0) (<= 1 main_~leader_len~0)) [2022-04-06 19:58:13,192 INFO L878 garLoopResultBuilder]: At program point L49-3(lines 49 53) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= 1 main_~leader_len~0)) [2022-04-06 19:58:13,192 INFO L885 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: true [2022-04-06 19:58:13,192 INFO L885 garLoopResultBuilder]: At program point L54(lines 24 56) the Hoare annotation is: true [2022-04-06 19:58:13,192 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2022-04-06 19:58:13,192 INFO L878 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2022-04-06 19:58:13,192 INFO L885 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: true [2022-04-06 19:58:13,193 INFO L878 garLoopResultBuilder]: At program point L38-1(lines 25 56) the Hoare annotation is: (<= 1 main_~leader_len~0) [2022-04-06 19:58:13,193 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 56) the Hoare annotation is: true [2022-04-06 19:58:13,193 INFO L878 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2022-04-06 19:58:13,193 INFO L878 garLoopResultBuilder]: At program point L47(lines 47 48) the Hoare annotation is: (and (<= 1 main_~p~0) (<= (+ main_~bufsize~0 main_~p~0) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2022-04-06 19:58:13,193 INFO L878 garLoopResultBuilder]: At program point L39(lines 25 56) the Hoare annotation is: (<= 1 main_~leader_len~0) [2022-04-06 19:58:13,193 INFO L885 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: true [2022-04-06 19:58:13,193 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-06 19:58:13,194 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 19:58:13,194 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-06 19:58:13,194 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-06 19:58:13,194 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 19:58:13,194 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 19:58:13,194 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-06 19:58:13,194 INFO L878 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-06 19:58:13,194 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-04-06 19:58:13,194 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-06 19:58:13,194 INFO L878 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 19:58:13,194 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 19:58:13,194 INFO L878 garLoopResultBuilder]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-06 19:58:13,197 INFO L719 BasicCegarLoop]: Path program histogram: [4, 2, 2] [2022-04-06 19:58:13,198 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 19:58:13,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 07:58:13 BoogieIcfgContainer [2022-04-06 19:58:13,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 19:58:13,211 INFO L158 Benchmark]: Toolchain (without parser) took 3339.39ms. Allocated memory was 176.2MB in the beginning and 244.3MB in the end (delta: 68.2MB). Free memory was 127.3MB in the beginning and 191.1MB in the end (delta: -63.8MB). Peak memory consumption was 5.7MB. Max. memory is 8.0GB. [2022-04-06 19:58:13,211 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory was 143.6MB in the beginning and 143.4MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 19:58:13,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.46ms. Allocated memory is still 176.2MB. Free memory was 127.2MB in the beginning and 152.0MB in the end (delta: -24.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-06 19:58:13,212 INFO L158 Benchmark]: Boogie Preprocessor took 19.89ms. Allocated memory is still 176.2MB. Free memory was 152.0MB in the beginning and 150.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 19:58:13,212 INFO L158 Benchmark]: RCFGBuilder took 204.42ms. Allocated memory is still 176.2MB. Free memory was 150.4MB in the beginning and 139.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 19:58:13,212 INFO L158 Benchmark]: TraceAbstraction took 2943.75ms. Allocated memory was 176.2MB in the beginning and 244.3MB in the end (delta: 68.2MB). Free memory was 139.3MB in the beginning and 191.1MB in the end (delta: -51.9MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-04-06 19:58:13,213 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 176.2MB. Free memory was 143.6MB in the beginning and 143.4MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.46ms. Allocated memory is still 176.2MB. Free memory was 127.2MB in the beginning and 152.0MB in the end (delta: -24.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.89ms. Allocated memory is still 176.2MB. Free memory was 152.0MB in the beginning and 150.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 204.42ms. Allocated memory is still 176.2MB. Free memory was 150.4MB in the beginning and 139.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2943.75ms. Allocated memory was 176.2MB in the beginning and 244.3MB in the end (delta: 68.2MB). Free memory was 139.3MB in the beginning and 191.1MB in the end (delta: -51.9MB). Peak memory consumption was 17.8MB. 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: 19]: 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, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 213 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 118 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 520 IncrementalHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 95 mSDtfsCounter, 520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 176 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 71 PreInvPairs, 101 NumberOfFragments, 178 HoareAnnotationTreeSize, 71 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 222 FormulaSimplificationTreeSizeReductionInter, 0.1s 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (p + 2 * ielen <= bufsize_0 + i * 2 && 1 <= p) && 1 <= leader_len - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-04-06 19:58:13,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...