/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 18:18:02,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 18:18:02,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 18:18:02,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 18:18:02,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 18:18:02,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 18:18:02,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 18:18:02,802 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 18:18:02,814 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 18:18:02,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 18:18:02,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 18:18:02,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 18:18:02,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 18:18:02,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 18:18:02,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 18:18:02,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 18:18:02,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 18:18:02,818 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 18:18:02,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 18:18:02,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 18:18:02,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 18:18:02,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 18:18:02,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 18:18:02,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 18:18:02,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 18:18:02,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 18:18:02,828 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 18:18:02,828 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 18:18:02,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 18:18:02,829 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 18:18:02,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 18:18:03,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 18:18:03,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 18:18:03,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 18:18:03,045 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 18:18:03,047 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 18:18:03,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2022-03-20 18:18:03,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25899d321/5d0379090bc54efc8ddf0c64613960f1/FLAG11977719e [2022-03-20 18:18:03,448 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 18:18:03,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2022-03-20 18:18:03,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25899d321/5d0379090bc54efc8ddf0c64613960f1/FLAG11977719e [2022-03-20 18:18:03,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25899d321/5d0379090bc54efc8ddf0c64613960f1 [2022-03-20 18:18:03,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 18:18:03,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 18:18:03,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 18:18:03,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 18:18:03,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 18:18:03,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418f5916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03, skipping insertion in model container [2022-03-20 18:18:03,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 18:18:03,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 18:18:03,630 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-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2022-03-20 18:18:03,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 18:18:03,639 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 18:18:03,652 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-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2022-03-20 18:18:03,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 18:18:03,665 INFO L208 MainTranslator]: Completed translation [2022-03-20 18:18:03,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03 WrapperNode [2022-03-20 18:18:03,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 18:18:03,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 18:18:03,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 18:18:03,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 18:18:03,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 18:18:03,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 18:18:03,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 18:18:03,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 18:18:03,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03" (1/1) ... [2022-03-20 18:18:03,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 18:18:03,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 18:18:03,736 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 18:18:03,759 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 18:18:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 18:18:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 18:18:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 18:18:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 18:18:03,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 18:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 18:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 18:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 18:18:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 18:18:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 18:18:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 18:18:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 18:18:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 18:18:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 18:18:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 18:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 18:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 18:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 18:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 18:18:03,837 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 18:18:03,838 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 18:18:03,949 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 18:18:03,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 18:18:03,954 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-20 18:18:03,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 06:18:03 BoogieIcfgContainer [2022-03-20 18:18:03,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 18:18:03,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 18:18:03,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 18:18:03,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 18:18:03,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 06:18:03" (1/3) ... [2022-03-20 18:18:03,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa494c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 06:18:03, skipping insertion in model container [2022-03-20 18:18:03,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:18:03" (2/3) ... [2022-03-20 18:18:03,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa494c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 06:18:03, skipping insertion in model container [2022-03-20 18:18:03,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 06:18:03" (3/3) ... [2022-03-20 18:18:03,991 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2022-03-20 18:18:03,995 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 18:18:03,996 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 18:18:04,033 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 18:18:04,039 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 18:18:04,039 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 18:18:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 18:18:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-20 18:18:04,056 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 18:18:04,057 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 18:18:04,057 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 18:18:04,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 18:18:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash -782080232, now seen corresponding path program 1 times [2022-03-20 18:18:04,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 18:18:04,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2030558297] [2022-03-20 18:18:04,077 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 18:18:04,078 INFO L85 PathProgramCache]: Analyzing trace with hash -782080232, now seen corresponding path program 2 times [2022-03-20 18:18:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 18:18:04,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390281736] [2022-03-20 18:18:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 18:18:04,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 18:18:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 18:18:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 18:18:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 18:18:04,320 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 18:18:04,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 18:18:04,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390281736] [2022-03-20 18:18:04,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390281736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 18:18:04,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 18:18:04,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 18:18:04,324 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 18:18:04,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2030558297] [2022-03-20 18:18:04,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2030558297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 18:18:04,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 18:18:04,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 18:18:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113322234] [2022-03-20 18:18:04,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 18:18:04,331 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 18:18:04,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 18:18:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 18:18:04,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 18:18:04,359 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 18:18:04,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 18:18:04,504 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-03-20 18:18:04,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 18:18:04,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-20 18:18:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 18:18:04,513 INFO L225 Difference]: With dead ends: 33 [2022-03-20 18:18:04,513 INFO L226 Difference]: Without dead ends: 16 [2022-03-20 18:18:04,516 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-20 18:18:04,520 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 18:18:04,521 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 54 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 18:18:04,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-20 18:18:04,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-20 18:18:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 18:18:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-03-20 18:18:04,553 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2022-03-20 18:18:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 18:18:04,553 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-03-20 18:18:04,553 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 18:18:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-03-20 18:18:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 18:18:04,554 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 18:18:04,554 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 18:18:04,555 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 18:18:04,555 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 18:18:04,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 18:18:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash 38085627, now seen corresponding path program 1 times [2022-03-20 18:18:04,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 18:18:04,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [167251262] [2022-03-20 18:18:04,560 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 18:18:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash 38085627, now seen corresponding path program 2 times [2022-03-20 18:18:04,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 18:18:04,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118537031] [2022-03-20 18:18:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 18:18:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 18:18:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 18:18:04,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 18:18:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 18:18:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 18:18:04,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 18:18:04,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118537031] [2022-03-20 18:18:04,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118537031] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 18:18:04,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356261714] [2022-03-20 18:18:04,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 18:18:04,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 18:18:04,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 18:18:04,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 18:18:04,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 18:18:04,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 18:18:04,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 18:18:04,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 18:18:04,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 18:18:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 18:18:04,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 18:18:05,097 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 18:18:05,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356261714] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 18:18:05,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-20 18:18:05,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-03-20 18:18:05,099 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 18:18:05,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [167251262] [2022-03-20 18:18:05,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [167251262] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 18:18:05,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 18:18:05,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 18:18:05,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815514308] [2022-03-20 18:18:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 18:18:05,101 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 18:18:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 18:18:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 18:18:05,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-20 18:18:05,103 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 18:18:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 18:18:05,136 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-03-20 18:18:05,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 18:18:05,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 18:18:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 18:18:05,137 INFO L225 Difference]: With dead ends: 16 [2022-03-20 18:18:05,137 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 18:18:05,139 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-03-20 18:18:05,140 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 18:18:05,143 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 18:18:05,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 18:18:05,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 18:18:05,144 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 18:18:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 18:18:05,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-03-20 18:18:05,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 18:18:05,145 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 18:18:05,145 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 18:18:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 18:18:05,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 18:18:05,148 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 18:18:05,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 18:18:05,359 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 18:18:05,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 18:18:05,499 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-03-20 18:18:05,500 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-03-20 18:18:05,500 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-03-20 18:18:05,500 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-03-20 18:18:05,500 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-03-20 18:18:05,500 INFO L882 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-03-20 18:18:05,500 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-03-20 18:18:05,501 INFO L878 garLoopResultBuilder]: At program point L32(lines 32 71) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (<= (+ main_~main__x~0 50) 0)) [2022-03-20 18:18:05,501 INFO L878 garLoopResultBuilder]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) the Hoare annotation is: false [2022-03-20 18:18:05,501 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 14 74) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|)) [2022-03-20 18:18:05,501 INFO L878 garLoopResultBuilder]: At program point L26(lines 26 72) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (<= (+ main_~main__x~0 50) 0)) [2022-03-20 18:18:05,501 INFO L878 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: false [2022-03-20 18:18:05,501 INFO L878 garLoopResultBuilder]: At program point mainEXIT(lines 14 74) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (<= (+ main_~main__x~0 50) 0))) [2022-03-20 18:18:05,502 INFO L878 garLoopResultBuilder]: At program point L55(lines 55 64) the Hoare annotation is: (or (and (not (= main_~__VERIFIER_assert__cond~0 0)) (<= (+ 51 main_~main__x~0) main_~main__y~0)) (and (or (< main_~main__x~0 0) (< 0 main_~main__y~0)) (<= 1 main_~__VERIFIER_assert__cond~0))) [2022-03-20 18:18:05,502 INFO L878 garLoopResultBuilder]: At program point L20(lines 20 73) the Hoare annotation is: (and (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (<= (+ main_~main__x~0 50) 0)) [2022-03-20 18:18:05,502 INFO L878 garLoopResultBuilder]: At program point L46(lines 33 67) the Hoare annotation is: (or (< main_~main__x~0 0) (< 0 main_~main__y~0)) [2022-03-20 18:18:05,502 INFO L878 garLoopResultBuilder]: At program point mainFINAL(lines 14 74) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (<= (+ main_~main__x~0 50) 0))) [2022-03-20 18:18:05,502 INFO L878 garLoopResultBuilder]: At program point L40(lines 40 66) the Hoare annotation is: (or (< main_~main__x~0 0) (< 0 main_~main__y~0)) [2022-03-20 18:18:05,502 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-20 18:18:05,503 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_65~0)| ~__return_65~0) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 18:18:05,503 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-20 18:18:05,503 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 18:18:05,503 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 18:18:05,503 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 18:18:05,503 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 18:18:05,506 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2] [2022-03-20 18:18:05,507 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 18:18:05,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 06:18:05 BoogieIcfgContainer [2022-03-20 18:18:05,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 18:18:05,519 INFO L158 Benchmark]: Toolchain (without parser) took 2052.65ms. Allocated memory was 211.8MB in the beginning and 254.8MB in the end (delta: 43.0MB). Free memory was 159.9MB in the beginning and 147.9MB in the end (delta: 12.0MB). Peak memory consumption was 55.4MB. Max. memory is 8.0GB. [2022-03-20 18:18:05,520 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 211.8MB. Free memory was 176.1MB in the beginning and 176.0MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 18:18:05,520 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.61ms. Allocated memory was 211.8MB in the beginning and 254.8MB in the end (delta: 43.0MB). Free memory was 159.7MB in the beginning and 231.2MB in the end (delta: -71.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-03-20 18:18:05,521 INFO L158 Benchmark]: Boogie Preprocessor took 39.57ms. Allocated memory is still 254.8MB. Free memory was 231.2MB in the beginning and 229.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 18:18:05,521 INFO L158 Benchmark]: RCFGBuilder took 250.58ms. Allocated memory is still 254.8MB. Free memory was 229.7MB in the beginning and 219.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 18:18:05,521 INFO L158 Benchmark]: TraceAbstraction took 1543.01ms. Allocated memory is still 254.8MB. Free memory was 218.7MB in the beginning and 147.9MB in the end (delta: 70.8MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2022-03-20 18:18:05,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 211.8MB. Free memory was 176.1MB in the beginning and 176.0MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.61ms. Allocated memory was 211.8MB in the beginning and 254.8MB in the end (delta: 43.0MB). Free memory was 159.7MB in the beginning and 231.2MB in the end (delta: -71.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.57ms. Allocated memory is still 254.8MB. Free memory was 231.2MB in the beginning and 229.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 250.58ms. Allocated memory is still 254.8MB. Free memory was 229.7MB in the beginning and 219.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1543.01ms. Allocated memory is still 254.8MB. Free memory was 218.7MB in the beginning and 147.9MB in the end (delta: 70.8MB). Peak memory consumption was 71.3MB. 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: 57]: 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 25 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 31 NumberOfFragments, 137 HoareAnnotationTreeSize, 18 FomulaSimplifications, 50 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: main__x < 0 || 0 < main__y - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: !(__VERIFIER_assert__cond == 0) || ((\old(__return_65) == __return_65 && __tmp_55_0 == \old(__tmp_55_0)) && main__x + 50 <= 0) RESULT: Ultimate proved your program to be correct! [2022-03-20 18:18:05,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...