/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/nla-digbench-scaling/geo1-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:12:33,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:12:33,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:12:33,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 04:12:33,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:12:33,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:12:33,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:12:33,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:12:33,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:12:33,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:12:33,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:12:33,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:12:33,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:12:33,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:12:33,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:12:33,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:12:33,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:12:33,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:12:33,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:12:33,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:12:33,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:12:33,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:12:33,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:12:33,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:12:33,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:12:33,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:12:33,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:12:33,502 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:12:33,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:12:33,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:12:33,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:12:33,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:12:33,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:12:33,707 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:12:33,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound100.c [2022-02-24 04:12:33,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39cbcf559/ce448823ffbe42f783ebe94c65d9bd65/FLAG01b179665 [2022-02-24 04:12:34,092 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:12:34,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound100.c [2022-02-24 04:12:34,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39cbcf559/ce448823ffbe42f783ebe94c65d9bd65/FLAG01b179665 [2022-02-24 04:12:34,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39cbcf559/ce448823ffbe42f783ebe94c65d9bd65 [2022-02-24 04:12:34,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:12:34,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:12:34,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:12:34,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:12:34,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:12:34,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497209b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34, skipping insertion in model container [2022-02-24 04:12:34,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:12:34,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:12:34,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound100.c[546,559] [2022-02-24 04:12:34,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:12:34,251 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:12:34,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound100.c[546,559] [2022-02-24 04:12:34,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:12:34,286 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:12:34,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34 WrapperNode [2022-02-24 04:12:34,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:12:34,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:12:34,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:12:34,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:12:34,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:12:34,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:12:34,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:12:34,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:12:34,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34" (1/1) ... [2022-02-24 04:12:34,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:12:34,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:12:34,351 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) [2022-02-24 04:12:34,357 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 [2022-02-24 04:12:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:12:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:12:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:12:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-24 04:12:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 04:12:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:12:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 04:12:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:12:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:12:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:12:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:12:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-24 04:12:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 04:12:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:12:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:12:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:12:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:12:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:12:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:12:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:12:34,476 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:12:34,477 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:12:34,591 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:12:34,596 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:12:34,596 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 04:12:34,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:12:34 BoogieIcfgContainer [2022-02-24 04:12:34,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:12:34,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:12:34,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:12:34,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:12:34,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:12:34" (1/3) ... [2022-02-24 04:12:34,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d3b83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:12:34, skipping insertion in model container [2022-02-24 04:12:34,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:12:34" (2/3) ... [2022-02-24 04:12:34,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d3b83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:12:34, skipping insertion in model container [2022-02-24 04:12:34,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:12:34" (3/3) ... [2022-02-24 04:12:34,617 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound100.c [2022-02-24 04:12:34,635 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:12:34,635 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:12:34,671 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:12:34,680 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=QVASR [2022-02-24 04:12:34,680 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:12:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-24 04:12:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-24 04:12:34,712 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:12:34,712 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:12:34,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:12:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:12:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash 774216096, now seen corresponding path program 1 times [2022-02-24 04:12:34,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:12:34,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230386087] [2022-02-24 04:12:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:12:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:12:34,776 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:12:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:12:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:12:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:12:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:12:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:12:34,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:12:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:12:34,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 04:12:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:12:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 04:12:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:12:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-24 04:12:34,935 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:12:34,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230386087] [2022-02-24 04:12:34,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [230386087] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:12:34,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:12:34,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-24 04:12:34,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766869114] [2022-02-24 04:12:34,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:12:34,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-24 04:12:34,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:12:34,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-24 04:12:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 04:12:34,962 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:12:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:12:35,038 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2022-02-24 04:12:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-24 04:12:35,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-02-24 04:12:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:12:35,054 INFO L225 Difference]: With dead ends: 57 [2022-02-24 04:12:35,054 INFO L226 Difference]: Without dead ends: 27 [2022-02-24 04:12:35,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 04:12:35,060 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:12:35,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 04:12:35,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-24 04:12:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-24 04:12:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-24 04:12:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-02-24 04:12:35,102 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2022-02-24 04:12:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:12:35,102 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-02-24 04:12:35,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:12:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-02-24 04:12:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-24 04:12:35,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:12:35,105 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:12:35,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:12:35,106 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:12:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:12:35,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1105237916, now seen corresponding path program 1 times [2022-02-24 04:12:35,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:12:35,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660139854] [2022-02-24 04:12:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:12:35,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:12:35,114 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:12:35,143 WARN L132 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-02-24 04:12:35,147 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-02-24 04:12:35,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 04:12:35,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 04:12:35,158 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-24 04:12:35,161 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 04:12:35,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:12:35 BoogieIcfgContainer [2022-02-24 04:12:35,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 04:12:35,177 INFO L158 Benchmark]: Toolchain (without parser) took 1069.89ms. Allocated memory was 178.3MB in the beginning and 221.2MB in the end (delta: 43.0MB). Free memory was 121.2MB in the beginning and 150.5MB in the end (delta: -29.3MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-02-24 04:12:35,178 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 04:12:35,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.26ms. Allocated memory was 178.3MB in the beginning and 221.2MB in the end (delta: 43.0MB). Free memory was 121.0MB in the beginning and 192.5MB in the end (delta: -71.5MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2022-02-24 04:12:35,181 INFO L158 Benchmark]: Boogie Preprocessor took 33.56ms. Allocated memory is still 221.2MB. Free memory was 192.5MB in the beginning and 190.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-24 04:12:35,183 INFO L158 Benchmark]: RCFGBuilder took 274.45ms. Allocated memory is still 221.2MB. Free memory was 190.9MB in the beginning and 180.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-24 04:12:35,184 INFO L158 Benchmark]: TraceAbstraction took 577.85ms. Allocated memory is still 221.2MB. Free memory was 179.9MB in the beginning and 150.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-02-24 04:12:35,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 178.26ms. Allocated memory was 178.3MB in the beginning and 221.2MB in the end (delta: 43.0MB). Free memory was 121.0MB in the beginning and 192.5MB in the end (delta: -71.5MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.56ms. Allocated memory is still 221.2MB. Free memory was 192.5MB in the beginning and 190.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 274.45ms. Allocated memory is still 221.2MB. Free memory was 190.9MB in the beginning and 180.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 577.85ms. Allocated memory is still 221.2MB. Free memory was 179.9MB in the beginning and 150.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. 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 - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(z>=0 && z<=100) [L13] COND FALSE !(!cond) [L26] RET assume_abort_if_not(z>=0 && z<=100) [L27] k = __VERIFIER_nondet_int() [L28] CALL assume_abort_if_not(k>=0 && k<=100) [L13] COND FALSE !(!cond) [L28] RET assume_abort_if_not(k>=0 && k<=100) [L29] CALL assume_abort_if_not(z >= 1) [L13] COND FALSE !(!cond) [L29] RET assume_abort_if_not(z >= 1) [L30] CALL assume_abort_if_not(k >= 1) [L13] COND FALSE !(!cond) [L30] RET assume_abort_if_not(k >= 1) [L32] x = 1 [L33] y = z [L34] c = 1 [L36] COND TRUE 1 [L37] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 30 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 3, 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: No data available, 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-24 04:12:35,219 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...