/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 02:35:32,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 02:35:32,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 02:35:32,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 02:35:32,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 02:35:32,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 02:35:32,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 02:35:32,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 02:35:32,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 02:35:32,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 02:35:32,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 02:35:32,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 02:35:32,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 02:35:32,619 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 02:35:32,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 02:35:32,620 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 02:35:32,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 02:35:32,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 02:35:32,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 02:35:32,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 02:35:32,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 02:35:32,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 02:35:32,621 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 02:35:32,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 02:35:32,621 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 02:35:32,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 02:35:32,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 02:35:32,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 02:35:32,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 02:35:32,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 02:35:32,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 02:35:32,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 02:35:32,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 02:35:32,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 02:35:32,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 02:35:32,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 02:35:32,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 02:35:32,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 02:35:32,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 02:35:32,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 02:35:32,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 02:35:32,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 02:35:32,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 02:35:32,856 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 02:35:32,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1.i [2022-01-31 02:35:32,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbcf104d/b7f8eee4623245218259c3201d01148c/FLAG8b560bb7c [2022-01-31 02:35:33,280 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 02:35:33,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1.i [2022-01-31 02:35:33,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbcf104d/b7f8eee4623245218259c3201d01148c/FLAG8b560bb7c [2022-01-31 02:35:33,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbcf104d/b7f8eee4623245218259c3201d01148c [2022-01-31 02:35:33,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 02:35:33,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 02:35:33,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 02:35:33,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 02:35:33,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 02:35:33,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44dc0999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33, skipping insertion in model container [2022-01-31 02:35:33,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 02:35:33,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 02:35:33,463 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-new/count_by_1.i[891,904] [2022-01-31 02:35:33,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 02:35:33,481 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 02:35:33,493 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-new/count_by_1.i[891,904] [2022-01-31 02:35:33,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 02:35:33,509 INFO L208 MainTranslator]: Completed translation [2022-01-31 02:35:33,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33 WrapperNode [2022-01-31 02:35:33,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 02:35:33,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 02:35:33,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 02:35:33,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 02:35:33,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 02:35:33,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 02:35:33,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 02:35:33,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 02:35:33,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33" (1/1) ... [2022-01-31 02:35:33,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 02:35:33,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:35:33,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 02:35:33,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 02:35:33,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 02:35:33,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 02:35:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 02:35:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 02:35:33,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 02:35:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 02:35:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 02:35:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 02:35:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 02:35:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 02:35:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 02:35:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 02:35:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 02:35:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 02:35:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 02:35:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 02:35:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 02:35:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 02:35:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 02:35:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 02:35:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 02:35:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 02:35:33,673 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 02:35:33,674 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 02:35:33,784 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 02:35:33,788 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 02:35:33,788 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 02:35:33,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:35:33 BoogieIcfgContainer [2022-01-31 02:35:33,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 02:35:33,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 02:35:33,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 02:35:33,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 02:35:33,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 02:35:33" (1/3) ... [2022-01-31 02:35:33,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c6ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:35:33, skipping insertion in model container [2022-01-31 02:35:33,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:35:33" (2/3) ... [2022-01-31 02:35:33,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c6ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:35:33, skipping insertion in model container [2022-01-31 02:35:33,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:35:33" (3/3) ... [2022-01-31 02:35:33,797 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2022-01-31 02:35:33,800 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 02:35:33,800 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 02:35:33,837 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 02:35:33,843 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 02:35:33,843 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 02:35:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 02:35:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 02:35:33,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:35:33,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:35:33,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:35:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:35:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1305738320, now seen corresponding path program 1 times [2022-01-31 02:35:33,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:35:33,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798325765] [2022-01-31 02:35:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:33,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:35:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:34,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:35:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:35:34,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:35:34,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798325765] [2022-01-31 02:35:34,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798325765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:35:34,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:35:34,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 02:35:34,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570904280] [2022-01-31 02:35:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:35:34,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 02:35:34,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:35:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 02:35:34,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 02:35:34,057 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 02:35:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:35:34,144 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-01-31 02:35:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 02:35:34,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2022-01-31 02:35:34,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:35:34,150 INFO L225 Difference]: With dead ends: 34 [2022-01-31 02:35:34,150 INFO L226 Difference]: Without dead ends: 15 [2022-01-31 02:35:34,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 02:35:34,154 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:35:34,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:35:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-31 02:35:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-01-31 02:35:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-01-31 02:35:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-01-31 02:35:34,193 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2022-01-31 02:35:34,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:35:34,194 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-01-31 02:35:34,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 02:35:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-01-31 02:35:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-31 02:35:34,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:35:34,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:35:34,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 02:35:34,197 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:35:34,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:35:34,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1786070446, now seen corresponding path program 1 times [2022-01-31 02:35:34,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:35:34,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221655900] [2022-01-31 02:35:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:34,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:35:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:35:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:35:34,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:35:34,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221655900] [2022-01-31 02:35:34,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221655900] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:35:34,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786718053] [2022-01-31 02:35:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:34,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:35:34,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:35:34,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 02:35:34,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 02:35:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:34,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 02:35:34,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:35:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:35:34,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:35:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:35:34,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786718053] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:35:34,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:35:34,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-31 02:35:34,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136402953] [2022-01-31 02:35:34,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:35:34,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 02:35:34,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:35:34,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 02:35:34,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 02:35:34,449 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 02:35:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:35:34,519 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-01-31 02:35:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 02:35:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-01-31 02:35:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:35:34,526 INFO L225 Difference]: With dead ends: 25 [2022-01-31 02:35:34,526 INFO L226 Difference]: Without dead ends: 20 [2022-01-31 02:35:34,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-01-31 02:35:34,529 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:35:34,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 02:35:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-31 02:35:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-31 02:35:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-01-31 02:35:34,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-01-31 02:35:34,538 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2022-01-31 02:35:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:35:34,539 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-01-31 02:35:34,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 02:35:34,539 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-01-31 02:35:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 02:35:34,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:35:34,540 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:35:34,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 02:35:34,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:35:34,757 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:35:34,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:35:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1161520328, now seen corresponding path program 2 times [2022-01-31 02:35:34,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:35:34,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628240681] [2022-01-31 02:35:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:34,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:35:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:34,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:35:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 02:35:34,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:35:34,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628240681] [2022-01-31 02:35:34,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628240681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:35:34,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:35:34,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 02:35:34,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429492084] [2022-01-31 02:35:34,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:35:34,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 02:35:34,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:35:34,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 02:35:34,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-31 02:35:34,866 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-01-31 02:35:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:35:34,930 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-01-31 02:35:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 02:35:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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 19 [2022-01-31 02:35:34,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:35:34,930 INFO L225 Difference]: With dead ends: 20 [2022-01-31 02:35:34,930 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 02:35:34,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-31 02:35:34,933 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:35:34,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 02:35:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 02:35:34,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 02:35:34,935 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) [2022-01-31 02:35:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 02:35:34,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-01-31 02:35:34,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:35:34,935 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 02:35:34,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-01-31 02:35:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 02:35:34,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 02:35:34,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 02:35:34,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 02:35:34,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-31 02:35:34,976 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-01-31 02:35:34,976 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-01-31 02:35:34,976 INFO L858 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-01-31 02:35:34,976 INFO L858 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-01-31 02:35:34,976 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-01-31 02:35:34,976 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-01-31 02:35:34,976 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-01-31 02:35:34,977 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 24 29) the Hoare annotation is: true [2022-01-31 02:35:34,977 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-01-31 02:35:34,977 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 24 29) no Hoare annotation was computed. [2022-01-31 02:35:34,977 INFO L858 garLoopResultBuilder]: For program point L26-2(line 26) no Hoare annotation was computed. [2022-01-31 02:35:34,977 INFO L854 garLoopResultBuilder]: At program point L26-3(line 26) the Hoare annotation is: (<= main_~i~0 1000000) [2022-01-31 02:35:34,977 INFO L854 garLoopResultBuilder]: At program point L26-4(line 26) the Hoare annotation is: (and (<= main_~i~0 1000000) (< 999999 main_~i~0)) [2022-01-31 02:35:34,977 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 24 29) no Hoare annotation was computed. [2022-01-31 02:35:34,977 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-01-31 02:35:34,977 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-01-31 02:35:34,977 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-01-31 02:35:34,977 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-31 02:35:34,978 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-01-31 02:35:34,978 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-01-31 02:35:34,978 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-31 02:35:34,978 INFO L858 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-01-31 02:35:34,978 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-01-31 02:35:34,978 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-01-31 02:35:34,979 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-01-31 02:35:34,980 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-01-31 02:35:34,981 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-01-31 02:35:34,985 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2022-01-31 02:35:34,986 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 02:35:34,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:35:34 BoogieIcfgContainer [2022-01-31 02:35:34,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 02:35:34,998 INFO L158 Benchmark]: Toolchain (without parser) took 1696.30ms. Allocated memory was 210.8MB in the beginning and 342.9MB in the end (delta: 132.1MB). Free memory was 154.4MB in the beginning and 246.7MB in the end (delta: -92.3MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. [2022-01-31 02:35:34,998 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 210.8MB. Free memory is still 170.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 02:35:34,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.56ms. Allocated memory was 210.8MB in the beginning and 342.9MB in the end (delta: 132.1MB). Free memory was 154.2MB in the beginning and 313.8MB in the end (delta: -159.6MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. [2022-01-31 02:35:34,998 INFO L158 Benchmark]: Boogie Preprocessor took 22.73ms. Allocated memory is still 342.9MB. Free memory was 313.8MB in the beginning and 312.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 02:35:34,999 INFO L158 Benchmark]: RCFGBuilder took 255.83ms. Allocated memory is still 342.9MB. Free memory was 312.3MB in the beginning and 301.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 02:35:34,999 INFO L158 Benchmark]: TraceAbstraction took 1206.18ms. Allocated memory is still 342.9MB. Free memory was 301.3MB in the beginning and 246.7MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2022-01-31 02:35:35,000 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 210.8MB. Free memory is still 170.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.56ms. Allocated memory was 210.8MB in the beginning and 342.9MB in the end (delta: 132.1MB). Free memory was 154.2MB in the beginning and 313.8MB in the end (delta: -159.6MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.73ms. Allocated memory is still 342.9MB. Free memory was 313.8MB in the beginning and 312.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 255.83ms. Allocated memory is still 342.9MB. Free memory was 312.3MB in the beginning and 301.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1206.18ms. Allocated memory is still 342.9MB. Free memory was 301.3MB in the beginning and 246.7MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 35 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 19, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 21 HoareAnnotationTreeSize, 9 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 16/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: i <= 1000000 RESULT: Ultimate proved your program to be correct! [2022-01-31 02:35:35,028 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...