/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/loops/nec40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 17:46:28,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 17:46:28,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 17:46:28,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 17:46:28,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 17:46:28,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 17:46:28,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 17:46:28,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-20 17:46:28,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 17:46:28,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 17:46:28,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 17:46:28,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 17:46:28,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 17:46:28,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 17:46:28,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 17:46:28,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 17:46:28,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 17:46:28,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 17:46:28,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 17:46:28,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 17:46:28,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 17:46:28,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 17:46:28,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 17:46:28,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:46:28,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 17:46:28,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 17:46:28,460 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 17:46:28,460 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 17:46:28,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 17:46:28,460 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 17:46:28,460 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 17:46:28,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 17:46:28,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 17:46:28,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 17:46:28,712 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 17:46:28,712 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 17:46:28,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec40.c [2022-03-20 17:46:28,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c1377dc/303a8395d8cf4d7080fe7356f0fcbaac/FLAG25345b254 [2022-03-20 17:46:29,186 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 17:46:29,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40.c [2022-03-20 17:46:29,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c1377dc/303a8395d8cf4d7080fe7356f0fcbaac/FLAG25345b254 [2022-03-20 17:46:29,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c1377dc/303a8395d8cf4d7080fe7356f0fcbaac [2022-03-20 17:46:29,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 17:46:29,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 17:46:29,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 17:46:29,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 17:46:29,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 17:46:29,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578cd87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29, skipping insertion in model container [2022-03-20 17:46:29,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 17:46:29,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 17:46:29,366 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/nec40.c[317,330] [2022-03-20 17:46:29,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:46:29,389 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 17:46:29,399 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/nec40.c[317,330] [2022-03-20 17:46:29,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:46:29,413 INFO L208 MainTranslator]: Completed translation [2022-03-20 17:46:29,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29 WrapperNode [2022-03-20 17:46:29,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 17:46:29,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 17:46:29,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 17:46:29,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 17:46:29,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 17:46:29,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 17:46:29,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 17:46:29,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 17:46:29,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29" (1/1) ... [2022-03-20 17:46:29,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:46:29,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:46:29,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 17:46:29,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 17:46:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 17:46:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 17:46:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 17:46:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 17:46:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 17:46:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 17:46:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 17:46:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 17:46:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 17:46:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 17:46:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 17:46:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 17:46:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 17:46:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 17:46:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 17:46:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 17:46:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 17:46:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 17:46:29,563 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 17:46:29,564 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 17:46:29,669 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 17:46:29,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 17:46:29,674 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 17:46:29,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:46:29 BoogieIcfgContainer [2022-03-20 17:46:29,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 17:46:29,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 17:46:29,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 17:46:29,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 17:46:29,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:46:29" (1/3) ... [2022-03-20 17:46:29,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a97a02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:46:29, skipping insertion in model container [2022-03-20 17:46:29,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:46:29" (2/3) ... [2022-03-20 17:46:29,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a97a02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:46:29, skipping insertion in model container [2022-03-20 17:46:29,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:46:29" (3/3) ... [2022-03-20 17:46:29,683 INFO L111 eAbstractionObserver]: Analyzing ICFG nec40.c [2022-03-20 17:46:29,688 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 17:46:29,688 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 17:46:29,741 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 17:46:29,747 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 17:46:29,747 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 17:46:29,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 17 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) [2022-03-20 17:46:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 17:46:29,785 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:46:29,785 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:46:29,786 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:46:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:46:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash -723254197, now seen corresponding path program 1 times [2022-03-20 17:46:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:46:29,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [172497718] [2022-03-20 17:46:29,810 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:46:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash -723254197, now seen corresponding path program 2 times [2022-03-20 17:46:29,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:46:29,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744586916] [2022-03-20 17:46:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:46:29,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:46:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:46:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:46:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:46:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:46:30,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:46:30,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744586916] [2022-03-20 17:46:30,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744586916] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:46:30,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:46:30,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:46:30,090 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:46:30,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [172497718] [2022-03-20 17:46:30,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [172497718] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:46:30,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:46:30,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:46:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501088260] [2022-03-20 17:46:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:46:30,096 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:46:30,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:46:30,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:46:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 17:46:30,136 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 17 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2022-03-20 17:46:30,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:46:30,232 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-03-20 17:46:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:46:30,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 [2022-03-20 17:46:30,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:46:30,250 INFO L225 Difference]: With dead ends: 38 [2022-03-20 17:46:30,250 INFO L226 Difference]: Without dead ends: 16 [2022-03-20 17:46:30,253 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 17:46:30,260 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:46:30,262 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:46:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-20 17:46:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-20 17:46:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 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) [2022-03-20 17:46:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-03-20 17:46:30,301 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2022-03-20 17:46:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:46:30,302 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-03-20 17:46:30,302 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2022-03-20 17:46:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-03-20 17:46:30,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 17:46:30,304 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:46:30,304 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:46:30,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 17:46:30,304 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:46:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:46:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1522809640, now seen corresponding path program 1 times [2022-03-20 17:46:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:46:30,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [251003985] [2022-03-20 17:46:30,312 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:46:30,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1522809640, now seen corresponding path program 2 times [2022-03-20 17:46:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:46:30,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612298657] [2022-03-20 17:46:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:46:30,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:46:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:46:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:46:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:46:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:46:30,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:46:30,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612298657] [2022-03-20 17:46:30,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612298657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:46:30,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:46:30,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:46:30,423 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:46:30,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [251003985] [2022-03-20 17:46:30,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [251003985] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:46:30,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:46:30,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:46:30,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159428956] [2022-03-20 17:46:30,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:46:30,424 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:46:30,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:46:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:46:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:46:30,426 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-03-20 17:46:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:46:30,483 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-03-20 17:46:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:46:30,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 15 [2022-03-20 17:46:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:46:30,484 INFO L225 Difference]: With dead ends: 26 [2022-03-20 17:46:30,485 INFO L226 Difference]: Without dead ends: 18 [2022-03-20 17:46:30,485 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:46:30,486 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:46:30,487 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:46:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-20 17:46:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-03-20 17:46:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 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) [2022-03-20 17:46:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-03-20 17:46:30,496 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2022-03-20 17:46:30,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:46:30,497 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-03-20 17:46:30,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-03-20 17:46:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-03-20 17:46:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 17:46:30,498 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:46:30,498 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:46:30,498 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 17:46:30,498 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:46:30,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:46:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash -521364141, now seen corresponding path program 1 times [2022-03-20 17:46:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:46:30,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1258846819] [2022-03-20 17:46:30,506 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 17:46:30,506 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:46:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash -521364141, now seen corresponding path program 2 times [2022-03-20 17:46:30,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:46:30,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181734291] [2022-03-20 17:46:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:46:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:46:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:46:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:46:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:46:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:46:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:46:30,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181734291] [2022-03-20 17:46:30,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181734291] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:46:30,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:46:30,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:46:30,647 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:46:30,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1258846819] [2022-03-20 17:46:30,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1258846819] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:46:30,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:46:30,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:46:30,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778256516] [2022-03-20 17:46:30,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:46:30,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:46:30,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:46:30,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:46:30,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:46:30,649 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 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) [2022-03-20 17:46:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:46:30,703 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-03-20 17:46:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:46:30,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 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 [2022-03-20 17:46:30,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:46:30,704 INFO L225 Difference]: With dead ends: 18 [2022-03-20 17:46:30,704 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 17:46:30,704 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:46:30,705 INFO L913 BasicCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:46:30,706 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 8 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:46:30,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 17:46:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 17:46:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 17:46:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 17:46:30,707 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-03-20 17:46:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:46:30,707 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 17:46:30,707 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 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) [2022-03-20 17:46:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 17:46:30,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 17:46:30,710 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 17:46:30,711 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 17:46:30,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 17:46:30,847 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-03-20 17:46:30,847 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-03-20 17:46:30,847 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-03-20 17:46:30,847 INFO L878 garLoopResultBuilder]: At program point L27(lines 27 28) the Hoare annotation is: (or (= |~#x~0.base| |~#y~0.base|) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (not (= |old(~i~0)| 0))) [2022-03-20 17:46:30,847 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 16 31) the Hoare annotation is: true [2022-03-20 17:46:30,848 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 16 31) the Hoare annotation is: true [2022-03-20 17:46:30,848 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 16 31) the Hoare annotation is: (or (= |~#x~0.base| |~#y~0.base|) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (not (= |old(~i~0)| 0)) (and (= ~i~0 0) (= |#memory_int| |old(#memory_int)|) (= ~k~0 |old(~k~0)|))) [2022-03-20 17:46:30,848 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (or (= |~#x~0.base| |~#y~0.base|) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (not (= |old(~i~0)| 0))) [2022-03-20 17:46:30,848 INFO L878 garLoopResultBuilder]: At program point L26(lines 26 28) the Hoare annotation is: (or (= ~i~0 0) (= |~#x~0.base| |~#y~0.base|) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (not (= |old(~i~0)| 0))) [2022-03-20 17:46:30,848 INFO L885 garLoopResultBuilder]: At program point L26-1(lines 26 28) the Hoare annotation is: true [2022-03-20 17:46:30,848 INFO L878 garLoopResultBuilder]: At program point L20-1(lines 20 23) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (and (= .cse0 (select |#memory_int| |~#x~0.base|)) (= ~i~0 0) (= |main_#t~mem5| 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (not (= |old(~i~0)| 0)))) [2022-03-20 17:46:30,849 INFO L878 garLoopResultBuilder]: At program point L20-3(lines 20 23) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (and (= .cse0 (select |#memory_int| |~#x~0.base|)) (= ~i~0 0)) (= |~#x~0.base| |~#y~0.base|) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (not (= |old(~i~0)| 0)))) [2022-03-20 17:46:30,849 INFO L878 garLoopResultBuilder]: At program point L20-4(lines 20 23) the Hoare annotation is: (or (= ~i~0 0) (= |~#x~0.base| |~#y~0.base|) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (not (= |old(~i~0)| 0))) [2022-03-20 17:46:30,849 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|)) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2022-03-20 17:46:30,849 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~i~0 |old(~i~0)|) (= |#memory_int| |old(#memory_int)|) (= |old(~#y~0.offset)| |~#y~0.offset|) (= ~k~0 |old(~k~0)|) (= |old(~#y~0.base)| |~#y~0.base|) (= |~#x~0.base| |old(~#x~0.base)|) (= ~j~0 |old(~j~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(~#x~0.offset)| |~#x~0.offset|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 17:46:30,849 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|)) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2022-03-20 17:46:30,849 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 17:46:30,850 INFO L878 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|)) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2022-03-20 17:46:30,850 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 17:46:30,850 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 17:46:30,850 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2022-03-20 17:46:30,850 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2022-03-20 17:46:30,850 INFO L885 garLoopResultBuilder]: At program point L7(line 7) the Hoare annotation is: true [2022-03-20 17:46:30,850 INFO L885 garLoopResultBuilder]: At program point L6(lines 6 8) the Hoare annotation is: true [2022-03-20 17:46:30,850 INFO L885 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2022-03-20 17:46:30,851 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: true [2022-03-20 17:46:30,854 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-03-20 17:46:30,855 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 17:46:30,861 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:259) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:474) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:193) 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) [2022-03-20 17:46:30,864 INFO L158 Benchmark]: Toolchain (without parser) took 1660.05ms. Allocated memory is still 191.9MB. Free memory was 134.8MB in the beginning and 85.2MB in the end (delta: 49.7MB). Peak memory consumption was 50.2MB. Max. memory is 8.0GB. [2022-03-20 17:46:30,864 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 191.9MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 17:46:30,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.31ms. Allocated memory is still 191.9MB. Free memory was 134.6MB in the beginning and 161.2MB in the end (delta: -26.6MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. [2022-03-20 17:46:30,865 INFO L158 Benchmark]: Boogie Preprocessor took 26.83ms. Allocated memory is still 191.9MB. Free memory was 161.2MB in the beginning and 160.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 17:46:30,865 INFO L158 Benchmark]: RCFGBuilder took 234.34ms. Allocated memory is still 191.9MB. Free memory was 159.6MB in the beginning and 149.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 17:46:30,866 INFO L158 Benchmark]: TraceAbstraction took 1185.94ms. Allocated memory is still 191.9MB. Free memory was 148.6MB in the beginning and 85.2MB in the end (delta: 63.4MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. [2022-03-20 17:46:30,867 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 191.9MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.31ms. Allocated memory is still 191.9MB. Free memory was 134.6MB in the beginning and 161.2MB in the end (delta: -26.6MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.83ms. Allocated memory is still 191.9MB. Free memory was 161.2MB in the beginning and 160.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 234.34ms. Allocated memory is still 191.9MB. Free memory was 159.6MB in the beginning and 149.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1185.94ms. Allocated memory is still 191.9MB. Free memory was 148.6MB in the beginning and 85.2MB in the end (delta: 63.4MB). Peak memory consumption was 64.0MB. 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: 7]: 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 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 41 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 35 PreInvPairs, 48 NumberOfFragments, 229 HoareAnnotationTreeSize, 35 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 23 FomulaSimplificationsInter, 21 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 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:259) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-20 17:46:30,899 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...