/usr/bin/java -ea -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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 03:53:53,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 03:53:53,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 03:53:53,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 03:53:53,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 03:53:53,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 03:53:53,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 03:53:53,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-08 03:53:53,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 03:53:53,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 03:53:53,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 03:53:53,185 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 03:53:53,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 03:53:53,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 03:53:53,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 03:53:53,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 03:53:53,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 03:53:53,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 03:53:53,186 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 03:53:53,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 03:53:53,186 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 03:53:53,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 03:53:53,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 03:53:53,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 03:53:53,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 03:53:53,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 03:53:53,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:53:53,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 03:53:53,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 03:53:53,187 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 03:53:53,187 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 03:53:53,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 03:53:53,187 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 03:53:53,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 03:53:53,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 03:53:53,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 03:53:53,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 03:53:53,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 03:53:53,353 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 03:53:53,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2022-04-08 03:53:53,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa566879/bcc05f19bead4b538141f4c4e1a24211/FLAG01f58222e [2022-04-08 03:53:53,733 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 03:53:53,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i [2022-04-08 03:53:53,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa566879/bcc05f19bead4b538141f4c4e1a24211/FLAG01f58222e [2022-04-08 03:53:53,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa566879/bcc05f19bead4b538141f4c4e1a24211 [2022-04-08 03:53:53,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 03:53:53,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 03:53:53,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 03:53:53,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 03:53:53,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 03:53:53,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:53,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455f5821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53, skipping insertion in model container [2022-04-08 03:53:53,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:53,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 03:53:53,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 03:53:53,928 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-invgen/nested9.i[893,906] [2022-04-08 03:53:53,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:53:53,948 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 03:53:53,957 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-invgen/nested9.i[893,906] [2022-04-08 03:53:53,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:53:53,975 INFO L208 MainTranslator]: Completed translation [2022-04-08 03:53:53,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53 WrapperNode [2022-04-08 03:53:53,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 03:53:53,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 03:53:53,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 03:53:53,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 03:53:53,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:53,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:53,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:53,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:53,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:54,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:54,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:54,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 03:53:54,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 03:53:54,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 03:53:54,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 03:53:54,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53" (1/1) ... [2022-04-08 03:53:54,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:53:54,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 03:53:54,052 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) [2022-04-08 03:53:54,072 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 [2022-04-08 03:53:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 03:53:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 03:53:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 03:53:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 03:53:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 03:53:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 03:53:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 03:53:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 03:53:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-08 03:53:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-08 03:53:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 03:53:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 03:53:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 03:53:54,153 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 03:53:54,154 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 03:53:54,349 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 03:53:54,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 03:53:54,354 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-08 03:53:54,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:53:54 BoogieIcfgContainer [2022-04-08 03:53:54,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 03:53:54,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 03:53:54,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 03:53:54,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 03:53:54,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 03:53:53" (1/3) ... [2022-04-08 03:53:54,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b24ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:53:54, skipping insertion in model container [2022-04-08 03:53:54,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:53:53" (2/3) ... [2022-04-08 03:53:54,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b24ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:53:54, skipping insertion in model container [2022-04-08 03:53:54,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:53:54" (3/3) ... [2022-04-08 03:53:54,379 INFO L111 eAbstractionObserver]: Analyzing ICFG nested9.i [2022-04-08 03:53:54,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 03:53:54,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 03:53:54,430 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 03:53:54,435 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 [2022-04-08 03:53:54,435 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 03:53:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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) [2022-04-08 03:53:54,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-08 03:53:54,461 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:53:54,462 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:53:54,462 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:53:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:53:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2111647297, now seen corresponding path program 1 times [2022-04-08 03:53:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:53:54,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [872033863] [2022-04-08 03:53:54,484 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 03:53:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2111647297, now seen corresponding path program 2 times [2022-04-08 03:53:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:53:54,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368911599] [2022-04-08 03:53:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:53:54,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:53:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:53:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:53:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:53:54,768 INFO L290 TraceCheckUtils]: 0: Hoare triple {42#(and (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; {32#true} is VALID [2022-04-08 03:53:54,768 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-08 03:53:54,768 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #94#return; {32#true} is VALID [2022-04-08 03:53:54,770 INFO L272 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {42#(and (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:53:54,770 INFO L290 TraceCheckUtils]: 1: Hoare triple {42#(and (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; {32#true} is VALID [2022-04-08 03:53:54,770 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-08 03:53:54,770 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#true} {32#true} #94#return; {32#true} is VALID [2022-04-08 03:53:54,770 INFO L272 TraceCheckUtils]: 4: Hoare triple {32#true} call #t~ret7 := main(); {32#true} is VALID [2022-04-08 03:53:54,771 INFO L290 TraceCheckUtils]: 5: Hoare triple {32#true} havoc ~i~0;havoc ~j~0;havoc ~k~0;havoc ~n~0;havoc ~l~0;havoc ~m~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~n~0 := #t~nondet1;havoc #t~nondet1;assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;~m~0 := #t~nondet2;havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;~l~0 := #t~nondet3;havoc #t~nondet3; {32#true} is VALID [2022-04-08 03:53:54,771 INFO L290 TraceCheckUtils]: 6: Hoare triple {32#true} assume !!(-1000000 < ~n~0 && ~n~0 < 1000000); {32#true} is VALID [2022-04-08 03:53:54,771 INFO L290 TraceCheckUtils]: 7: Hoare triple {32#true} assume !!(-1000000 < ~m~0 && ~m~0 < 1000000); {32#true} is VALID [2022-04-08 03:53:54,771 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#true} assume !!(-1000000 < ~l~0 && ~l~0 < 1000000); {32#true} is VALID [2022-04-08 03:53:54,771 INFO L290 TraceCheckUtils]: 9: Hoare triple {32#true} assume 3 * ~n~0 <= ~m~0 + ~l~0; {32#true} is VALID [2022-04-08 03:53:54,773 INFO L290 TraceCheckUtils]: 10: Hoare triple {32#true} ~i~0 := 0; {37#(= main_~i~0 0)} is VALID [2022-04-08 03:53:54,774 INFO L290 TraceCheckUtils]: 11: Hoare triple {37#(= main_~i~0 0)} assume !!(~i~0 < ~n~0);~j~0 := 2 * ~i~0; {38#(and (<= (+ main_~i~0 1) main_~n~0) (= main_~i~0 0))} is VALID [2022-04-08 03:53:54,775 INFO L290 TraceCheckUtils]: 12: Hoare triple {38#(and (<= (+ main_~i~0 1) main_~n~0) (= main_~i~0 0))} assume !!(~j~0 < 3 * ~i~0);~k~0 := ~i~0; {39#(and (<= (+ main_~i~0 1) main_~n~0) (= main_~k~0 0) (= main_~i~0 0))} is VALID [2022-04-08 03:53:54,775 INFO L290 TraceCheckUtils]: 13: Hoare triple {39#(and (<= (+ main_~i~0 1) main_~n~0) (= main_~k~0 0) (= main_~i~0 0))} assume !!(~k~0 < ~j~0); {39#(and (<= (+ main_~i~0 1) main_~n~0) (= main_~k~0 0) (= main_~i~0 0))} is VALID [2022-04-08 03:53:54,777 INFO L272 TraceCheckUtils]: 14: Hoare triple {39#(and (<= (+ main_~i~0 1) main_~n~0) (= main_~k~0 0) (= main_~i~0 0))} call __VERIFIER_assert((if ~k~0 - ~i~0 <= 2 * ~n~0 then 1 else 0)); {40#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 03:53:54,777 INFO L290 TraceCheckUtils]: 15: Hoare triple {40#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {41#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 03:53:54,778 INFO L290 TraceCheckUtils]: 16: Hoare triple {41#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {33#false} is VALID [2022-04-08 03:53:54,778 INFO L290 TraceCheckUtils]: 17: Hoare triple {33#false} assume !false; {33#false} is VALID [2022-04-08 03:53:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 03:53:54,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:53:54,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368911599] [2022-04-08 03:53:54,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368911599] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:53:54,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:53:54,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 03:53:54,781 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:53:54,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [872033863] [2022-04-08 03:53:54,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [872033863] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:53:54,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:53:54,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 03:53:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372474126] [2022-04-08 03:53:54,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:53:54,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 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 18 [2022-04-08 03:53:54,789 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:53:54,791 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-04-08 03:53:54,815 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:53:54,815 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 03:53:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:53:54,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 03:53:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-08 03:53:54,838 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-04-08 03:53:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:53:55,342 INFO L93 Difference]: Finished difference Result 67 states and 98 transitions. [2022-04-08 03:53:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 03:53:55,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 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 18 [2022-04-08 03:53:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:53:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-04-08 03:53:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2022-04-08 03:53:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-04-08 03:53:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2022-04-08 03:53:55,354 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 98 transitions. [2022-04-08 03:53:55,443 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 98 edges. 98 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:53:55,449 INFO L225 Difference]: With dead ends: 67 [2022-04-08 03:53:55,449 INFO L226 Difference]: Without dead ends: 41 [2022-04-08 03:53:55,451 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-04-08 03:53:55,454 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 58 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-08 03:53:55,454 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 54 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-08 03:53:55,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-08 03:53:55,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2022-04-08 03:53:55,483 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:53:55,483 INFO L82 GeneralOperation]: Start isEquivalent. First operand 41 states. Second operand has 36 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 03:53:55,484 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand has 36 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 03:53:55,484 INFO L87 Difference]: Start difference. First operand 41 states. Second operand has 36 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 03:53:55,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:53:55,487 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-08 03:53:55,488 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-04-08 03:53:55,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:53:55,488 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:53:55,489 INFO L74 IsIncluded]: Start isIncluded. First operand has 36 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 41 states. [2022-04-08 03:53:55,489 INFO L87 Difference]: Start difference. First operand has 36 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 41 states. [2022-04-08 03:53:55,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:53:55,491 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-08 03:53:55,491 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-04-08 03:53:55,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:53:55,492 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:53:55,492 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:53:55,492 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:53:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 03:53:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-04-08 03:53:55,495 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 18 [2022-04-08 03:53:55,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:53:55,496 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-04-08 03:53:55,496 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-04-08 03:53:55,496 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 36 states and 42 transitions. [2022-04-08 03:53:55,533 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:53:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-04-08 03:53:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-08 03:53:55,533 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:53:55,534 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:53:55,534 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 03:53:55,534 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:53:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:53:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash 192634036, now seen corresponding path program 1 times [2022-04-08 03:53:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:53:55,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2055650091] [2022-04-08 03:53:56,816 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-08 03:53:57,067 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-08 03:53:57,069 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: free variables [|v_main_#t~post4_4|, v_main_~j~0_10] at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:324) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.PredicateHelper.normalizeTerm(PredicateHelper.java:201) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:254) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:412) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-08 03:53:57,072 INFO L158 Benchmark]: Toolchain (without parser) took 3314.04ms. Allocated memory was 205.5MB in the beginning and 255.9MB in the end (delta: 50.3MB). Free memory was 154.9MB in the beginning and 160.0MB in the end (delta: -5.1MB). Peak memory consumption was 46.7MB. Max. memory is 8.0GB. [2022-04-08 03:53:57,073 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 205.5MB. Free memory was 171.2MB in the beginning and 171.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 03:53:57,073 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.03ms. Allocated memory is still 205.5MB. Free memory was 154.7MB in the beginning and 180.3MB in the end (delta: -25.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 03:53:57,073 INFO L158 Benchmark]: Boogie Preprocessor took 28.35ms. Allocated memory is still 205.5MB. Free memory was 180.3MB in the beginning and 179.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 03:53:57,074 INFO L158 Benchmark]: RCFGBuilder took 349.49ms. Allocated memory is still 205.5MB. Free memory was 179.0MB in the beginning and 165.0MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-04-08 03:53:57,074 INFO L158 Benchmark]: TraceAbstraction took 2715.12ms. Allocated memory was 205.5MB in the beginning and 255.9MB in the end (delta: 50.3MB). Free memory was 164.6MB in the beginning and 160.0MB in the end (delta: 4.6MB). Peak memory consumption was 56.3MB. Max. memory is 8.0GB. [2022-04-08 03:53:57,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 205.5MB. Free memory was 171.2MB in the beginning and 171.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.03ms. Allocated memory is still 205.5MB. Free memory was 154.7MB in the beginning and 180.3MB in the end (delta: -25.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.35ms. Allocated memory is still 205.5MB. Free memory was 180.3MB in the beginning and 179.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 349.49ms. Allocated memory is still 205.5MB. Free memory was 179.0MB in the beginning and 165.0MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2715.12ms. Allocated memory was 205.5MB in the beginning and 255.9MB in the end (delta: 50.3MB). Free memory was 164.6MB in the beginning and 160.0MB in the end (delta: 4.6MB). Peak memory consumption was 56.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: free variables [|v_main_#t~post4_4|, v_main_~j~0_10] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: free variables [|v_main_#t~post4_4|, v_main_~j~0_10]: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-08 03:53:57,108 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...