/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-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 00:16:51,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 00:16:51,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 00:16:52,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 00:16:52,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 00:16:52,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 00:16:52,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 00:16:52,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 00:16:52,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 00:16:52,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 00:16:52,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 00:16:52,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 00:16:52,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 00:16:52,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 00:16:52,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 00:16:52,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 00:16:52,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 00:16:52,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 00:16:52,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 00:16:52,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 00:16:52,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 00:16:52,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 00:16:52,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 00:16:52,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:16:52,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 00:16:52,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 00:16:52,118 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 00:16:52,118 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 00:16:52,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 00:16:52,118 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 00:16:52,118 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 00:16:52,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 00:16:52,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 00:16:52,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 00:16:52,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 00:16:52,389 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 00:16:52,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2022-03-18 00:16:52,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db833298/31c67c7be73a4fd7ba6fb20dec4d62ca/FLAG6aa1a38d1 [2022-03-18 00:16:52,839 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 00:16:52,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2022-03-18 00:16:52,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db833298/31c67c7be73a4fd7ba6fb20dec4d62ca/FLAG6aa1a38d1 [2022-03-18 00:16:52,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db833298/31c67c7be73a4fd7ba6fb20dec4d62ca [2022-03-18 00:16:52,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 00:16:52,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 00:16:52,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 00:16:52,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 00:16:52,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 00:16:52,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:16:52" (1/1) ... [2022-03-18 00:16:52,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58bf0824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:52, skipping insertion in model container [2022-03-18 00:16:52,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:16:52" (1/1) ... [2022-03-18 00:16:52,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 00:16:52,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 00:16:53,017 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-crafted/simple_vardep_2.c[584,597] [2022-03-18 00:16:53,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:16:53,034 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 00:16:53,042 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-crafted/simple_vardep_2.c[584,597] [2022-03-18 00:16:53,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:16:53,055 INFO L208 MainTranslator]: Completed translation [2022-03-18 00:16:53,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53 WrapperNode [2022-03-18 00:16:53,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 00:16:53,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 00:16:53,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 00:16:53,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 00:16:53,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53" (1/1) ... [2022-03-18 00:16:53,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53" (1/1) ... [2022-03-18 00:16:53,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53" (1/1) ... [2022-03-18 00:16:53,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53" (1/1) ... [2022-03-18 00:16:53,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53" (1/1) ... [2022-03-18 00:16:53,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53" (1/1) ... [2022-03-18 00:16:53,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53" (1/1) ... [2022-03-18 00:16:53,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 00:16:53,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 00:16:53,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 00:16:53,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 00:16:53,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53" (1/1) ... [2022-03-18 00:16:53,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:16:53,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:16:53,125 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) [2022-03-18 00:16:53,126 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 [2022-03-18 00:16:53,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 00:16:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 00:16:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 00:16:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 00:16:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 00:16:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 00:16:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 00:16:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 00:16:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 00:16:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 00:16:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 00:16:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 00:16:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 00:16:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 00:16:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 00:16:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 00:16:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 00:16:53,213 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 00:16:53,214 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 00:16:53,281 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 00:16:53,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 00:16:53,286 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 00:16:53,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:16:53 BoogieIcfgContainer [2022-03-18 00:16:53,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 00:16:53,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 00:16:53,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 00:16:53,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 00:16:53,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:16:52" (1/3) ... [2022-03-18 00:16:53,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18950665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:16:53, skipping insertion in model container [2022-03-18 00:16:53,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:53" (2/3) ... [2022-03-18 00:16:53,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18950665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:16:53, skipping insertion in model container [2022-03-18 00:16:53,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:16:53" (3/3) ... [2022-03-18 00:16:53,296 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2022-03-18 00:16:53,300 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 00:16:53,300 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 00:16:53,338 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 00:16:53,345 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 [2022-03-18 00:16:53,345 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 00:16:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 00:16:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-18 00:16:53,374 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:16:53,375 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:16:53,375 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:16:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:16:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash -221021474, now seen corresponding path program 1 times [2022-03-18 00:16:53,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:53,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [426509371] [2022-03-18 00:16:53,405 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:16:53,406 INFO L85 PathProgramCache]: Analyzing trace with hash -221021474, now seen corresponding path program 2 times [2022-03-18 00:16:53,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:16:53,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123375023] [2022-03-18 00:16:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:16:53,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:16:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:16:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:16:54,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:16:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123375023] [2022-03-18 00:16:54,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123375023] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:54,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:54,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 00:16:54,091 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:16:54,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [426509371] [2022-03-18 00:16:54,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [426509371] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:54,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:54,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 00:16:54,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836208530] [2022-03-18 00:16:54,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:16:54,096 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 00:16:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 00:16:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-18 00:16:54,131 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 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 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-03-18 00:16:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:16:54,339 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-03-18 00:16:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 00:16:54,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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 [2022-03-18 00:16:54,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:16:54,354 INFO L225 Difference]: With dead ends: 29 [2022-03-18 00:16:54,355 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 00:16:54,358 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-18 00:16:54,362 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:16:54,363 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:16:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 00:16:54,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 00:16:54,380 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) [2022-03-18 00:16:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 00:16:54,382 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-03-18 00:16:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:16:54,382 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 00:16:54,382 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-03-18 00:16:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 00:16:54,382 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 00:16:54,385 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 00:16:54,385 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 00:16:54,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 00:16:54,559 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 6) no Hoare annotation was computed. [2022-03-18 00:16:54,560 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 6) no Hoare annotation was computed. [2022-03-18 00:16:54,560 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 6) no Hoare annotation was computed. [2022-03-18 00:16:54,560 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-18 00:16:54,561 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-18 00:16:54,561 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-18 00:16:54,561 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-18 00:16:54,561 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 00:16:54,562 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 00:16:54,562 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-18 00:16:54,563 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 15 28) the Hoare annotation is: true [2022-03-18 00:16:54,566 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse9 (* main_~i~0 3)) (.cse8 (* main_~i~0 2))) (let ((.cse5 (div main_~j~0 4294967296)) (.cse4 (div .cse8 4294967296)) (.cse0 (div main_~k~0 4294967296)) (.cse1 (div .cse9 4294967296))) (let ((.cse3 (* .cse1 4294967296)) (.cse2 (+ (* .cse0 4294967296) .cse9)) (.cse6 (* .cse4 4294967296)) (.cse7 (+ .cse8 (* 4294967296 .cse5)))) (and (<= .cse0 .cse1) (< .cse2 (+ main_~k~0 .cse3 1)) (not (<= (+ .cse4 1) .cse5)) (<= (+ main_~k~0 .cse3) .cse2) (<= (+ .cse6 main_~j~0) .cse7) (not (<= (+ .cse6 main_~j~0 1) .cse7)))))) [2022-03-18 00:16:54,567 INFO L878 garLoopResultBuilder]: At program point mainEXIT(lines 15 28) the Hoare annotation is: (let ((.cse9 (* main_~i~0 3)) (.cse8 (* main_~i~0 2))) (let ((.cse5 (div main_~j~0 4294967296)) (.cse4 (div .cse8 4294967296)) (.cse0 (div main_~k~0 4294967296)) (.cse1 (div .cse9 4294967296))) (let ((.cse3 (* .cse1 4294967296)) (.cse2 (+ (* .cse0 4294967296) .cse9)) (.cse6 (* .cse4 4294967296)) (.cse7 (+ .cse8 (* 4294967296 .cse5)))) (and (<= .cse0 .cse1) (< .cse2 (+ main_~k~0 .cse3 1)) (not (<= (+ .cse4 1) .cse5)) (<= (+ main_~k~0 .cse3) .cse2) (<= (+ .cse6 main_~j~0) .cse7) (not (<= (+ .cse6 main_~j~0 1) .cse7)))))) [2022-03-18 00:16:54,567 INFO L878 garLoopResultBuilder]: At program point L25-1(lines 21 26) the Hoare annotation is: (let ((.cse9 (* main_~i~0 3)) (.cse8 (* main_~i~0 2))) (let ((.cse5 (div main_~j~0 4294967296)) (.cse4 (div .cse8 4294967296)) (.cse0 (div main_~k~0 4294967296)) (.cse1 (div .cse9 4294967296))) (let ((.cse3 (* .cse1 4294967296)) (.cse2 (+ (* .cse0 4294967296) .cse9)) (.cse6 (* .cse4 4294967296)) (.cse7 (+ .cse8 (* 4294967296 .cse5)))) (and (<= .cse0 .cse1) (< .cse2 (+ main_~k~0 .cse3 1)) (not (<= (+ .cse4 1) .cse5)) (<= (+ main_~k~0 .cse3) .cse2) (<= (+ .cse6 main_~j~0) .cse7) (not (<= (+ .cse6 main_~j~0 1) .cse7)))))) [2022-03-18 00:16:54,567 INFO L878 garLoopResultBuilder]: At program point L21-2(lines 15 28) the Hoare annotation is: (let ((.cse9 (* main_~i~0 3)) (.cse8 (* main_~i~0 2))) (let ((.cse5 (div main_~j~0 4294967296)) (.cse4 (div .cse8 4294967296)) (.cse0 (div main_~k~0 4294967296)) (.cse1 (div .cse9 4294967296))) (let ((.cse3 (* .cse1 4294967296)) (.cse2 (+ (* .cse0 4294967296) .cse9)) (.cse6 (* .cse4 4294967296)) (.cse7 (+ .cse8 (* 4294967296 .cse5)))) (and (<= .cse0 .cse1) (< .cse2 (+ main_~k~0 .cse3 1)) (not (<= (+ .cse4 1) .cse5)) (<= (+ main_~k~0 .cse3) .cse2) (<= (+ .cse6 main_~j~0) .cse7) (not (<= (+ .cse6 main_~j~0 1) .cse7)))))) [2022-03-18 00:16:54,567 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 7 13) the Hoare annotation is: true [2022-03-18 00:16:54,567 INFO L878 garLoopResultBuilder]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-18 00:16:54,568 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-18 00:16:54,568 INFO L878 garLoopResultBuilder]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-18 00:16:54,568 INFO L878 garLoopResultBuilder]: At program point L9-2(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-18 00:16:54,568 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-18 00:16:54,572 INFO L718 BasicCegarLoop]: Path program histogram: [2] [2022-03-18 00:16:54,574 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 00:16:54,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 12:16:54 BoogieIcfgContainer [2022-03-18 00:16:54,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 00:16:54,620 INFO L158 Benchmark]: Toolchain (without parser) took 1758.85ms. Allocated memory is still 176.2MB. Free memory was 128.3MB in the beginning and 85.2MB in the end (delta: 43.0MB). Peak memory consumption was 43.3MB. Max. memory is 8.0GB. [2022-03-18 00:16:54,620 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 176.2MB. Free memory was 144.6MB in the beginning and 144.5MB in the end (delta: 71.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:16:54,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.23ms. Allocated memory is still 176.2MB. Free memory was 128.0MB in the beginning and 153.8MB in the end (delta: -25.7MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-03-18 00:16:54,622 INFO L158 Benchmark]: Boogie Preprocessor took 24.86ms. Allocated memory is still 176.2MB. Free memory was 153.8MB in the beginning and 152.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 00:16:54,622 INFO L158 Benchmark]: RCFGBuilder took 205.25ms. Allocated memory is still 176.2MB. Free memory was 152.4MB in the beginning and 143.3MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-18 00:16:54,623 INFO L158 Benchmark]: TraceAbstraction took 1328.68ms. Allocated memory is still 176.2MB. Free memory was 142.9MB in the beginning and 85.2MB in the end (delta: 57.6MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2022-03-18 00:16:54,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 176.2MB. Free memory was 144.6MB in the beginning and 144.5MB in the end (delta: 71.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.23ms. Allocated memory is still 176.2MB. Free memory was 128.0MB in the beginning and 153.8MB in the end (delta: -25.7MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.86ms. Allocated memory is still 176.2MB. Free memory was 153.8MB in the beginning and 152.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 205.25ms. Allocated memory is still 176.2MB. Free memory was 152.4MB in the beginning and 143.3MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1328.68ms. Allocated memory is still 176.2MB. Free memory was 142.9MB in the beginning and 85.2MB in the end (delta: 57.6MB). Peak memory consumption was 57.7MB. 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: 10]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 11 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 24 PreInvPairs, 33 NumberOfFragments, 449 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 26 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: 21]: Loop Invariant Derived loop invariant: ((((k / 4294967296 <= i * 3 / 4294967296 && k / 4294967296 * 4294967296 + i * 3 < k + i * 3 / 4294967296 * 4294967296 + 1) && !(i * 2 / 4294967296 + 1 <= j / 4294967296)) && k + i * 3 / 4294967296 * 4294967296 <= k / 4294967296 * 4294967296 + i * 3) && i * 2 / 4294967296 * 4294967296 + j <= i * 2 + 4294967296 * (j / 4294967296)) && !(i * 2 / 4294967296 * 4294967296 + j + 1 <= i * 2 + 4294967296 * (j / 4294967296)) - ProcedureContractResult [Line: 15]: Procedure Contract for main Derived contract for procedure main: ((((k / 4294967296 <= i * 3 / 4294967296 && k / 4294967296 * 4294967296 + i * 3 < k + i * 3 / 4294967296 * 4294967296 + 1) && !(i * 2 / 4294967296 + 1 <= j / 4294967296)) && k + i * 3 / 4294967296 * 4294967296 <= k / 4294967296 * 4294967296 + i * 3) && i * 2 / 4294967296 * 4294967296 + j <= i * 2 + 4294967296 * (j / 4294967296)) && !(i * 2 / 4294967296 * 4294967296 + j + 1 <= i * 2 + 4294967296 * (j / 4294967296)) - ProcedureContractResult [Line: 7]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-03-18 00:16:54,652 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...