/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/loops-crafted-1/Mono1_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 04:07:36,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 04:07:36,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 04:07:37,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 04:07:37,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 04:07:37,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 04:07:37,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 04:07:37,072 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 04:07:37,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 04:07:37,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 04:07:37,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 04:07:37,079 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 04:07:37,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 04:07:37,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 04:07:37,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 04:07:37,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 04:07:37,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 04:07:37,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 04:07:37,080 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 04:07:37,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 04:07:37,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 04:07:37,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 04:07:37,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 04:07:37,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 04:07:37,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 04:07:37,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 04:07:37,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 04:07:37,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 04:07:37,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 04:07:37,081 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 04:07:37,081 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 04:07:37,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 04:07:37,081 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 04:07:37,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 04:07:37,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 04:07:37,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 04:07:37,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 04:07:37,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 04:07:37,287 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 04:07:37,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono1_1-1.c [2022-04-08 04:07:37,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7435e9d2b/1c59709718734925a7746b020f82153c/FLAG859eb6ca4 [2022-04-08 04:07:37,707 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 04:07:37,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono1_1-1.c [2022-04-08 04:07:37,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7435e9d2b/1c59709718734925a7746b020f82153c/FLAG859eb6ca4 [2022-04-08 04:07:37,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7435e9d2b/1c59709718734925a7746b020f82153c [2022-04-08 04:07:37,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 04:07:37,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 04:07:37,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 04:07:37,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 04:07:37,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 04:07:37,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326ef5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37, skipping insertion in model container [2022-04-08 04:07:37,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 04:07:37,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 04:07:37,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono1_1-1.c[313,326] [2022-04-08 04:07:37,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 04:07:37,864 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 04:07:37,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono1_1-1.c[313,326] [2022-04-08 04:07:37,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 04:07:37,881 INFO L208 MainTranslator]: Completed translation [2022-04-08 04:07:37,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37 WrapperNode [2022-04-08 04:07:37,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 04:07:37,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 04:07:37,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 04:07:37,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 04:07:37,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 04:07:37,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 04:07:37,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 04:07:37,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 04:07:37,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37" (1/1) ... [2022-04-08 04:07:37,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 04:07:37,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 04:07:37,954 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 04:07:37,956 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 04:07:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 04:07:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 04:07:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 04:07:37,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 04:07:37,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 04:07:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 04:07:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 04:07:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 04:07:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 04:07:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 04:07:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 04:07:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 04:07:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 04:07:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 04:07:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 04:07:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 04:07:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 04:07:38,025 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 04:07:38,026 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 04:07:38,111 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 04:07:38,115 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 04:07:38,115 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 04:07:38,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 04:07:38 BoogieIcfgContainer [2022-04-08 04:07:38,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 04:07:38,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 04:07:38,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 04:07:38,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 04:07:38,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 04:07:37" (1/3) ... [2022-04-08 04:07:38,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d79ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 04:07:38, skipping insertion in model container [2022-04-08 04:07:38,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:37" (2/3) ... [2022-04-08 04:07:38,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d79ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 04:07:38, skipping insertion in model container [2022-04-08 04:07:38,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 04:07:38" (3/3) ... [2022-04-08 04:07:38,121 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono1_1-1.c [2022-04-08 04:07:38,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 04:07:38,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 04:07:38,173 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 04:07:38,178 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 04:07:38,178 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 04:07:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 04:07:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-08 04:07:38,215 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:07:38,215 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:07:38,216 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:07:38,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:07:38,219 INFO L85 PathProgramCache]: Analyzing trace with hash 491760044, now seen corresponding path program 1 times [2022-04-08 04:07:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:38,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1497522018] [2022-04-08 04:07:38,247 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 04:07:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash 491760044, now seen corresponding path program 2 times [2022-04-08 04:07:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:07:38,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175906155] [2022-04-08 04:07:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:07:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:07:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:07:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 04:07:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:07:38,439 INFO L290 TraceCheckUtils]: 0: Hoare triple {27#(and (= |#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(12, 2);call #Ultimate.allocInit(12, 3); {22#true} is VALID [2022-04-08 04:07:38,440 INFO L290 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2022-04-08 04:07:38,440 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #40#return; {22#true} is VALID [2022-04-08 04:07:38,445 INFO L272 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {27#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 04:07:38,445 INFO L290 TraceCheckUtils]: 1: Hoare triple {27#(and (= |#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(12, 2);call #Ultimate.allocInit(12, 3); {22#true} is VALID [2022-04-08 04:07:38,445 INFO L290 TraceCheckUtils]: 2: Hoare triple {22#true} assume true; {22#true} is VALID [2022-04-08 04:07:38,445 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {22#true} {22#true} #40#return; {22#true} is VALID [2022-04-08 04:07:38,446 INFO L272 TraceCheckUtils]: 4: Hoare triple {22#true} call #t~ret5 := main(); {22#true} is VALID [2022-04-08 04:07:38,446 INFO L290 TraceCheckUtils]: 5: Hoare triple {22#true} ~x~0 := 0; {22#true} is VALID [2022-04-08 04:07:38,448 INFO L290 TraceCheckUtils]: 6: Hoare triple {22#true} assume !true; {23#false} is VALID [2022-04-08 04:07:38,448 INFO L272 TraceCheckUtils]: 7: Hoare triple {23#false} call __VERIFIER_assert((if 100000001 == ~x~0 % 4294967296 then 1 else 0)); {23#false} is VALID [2022-04-08 04:07:38,449 INFO L290 TraceCheckUtils]: 8: Hoare triple {23#false} ~cond := #in~cond; {23#false} is VALID [2022-04-08 04:07:38,449 INFO L290 TraceCheckUtils]: 9: Hoare triple {23#false} assume 0 == ~cond; {23#false} is VALID [2022-04-08 04:07:38,449 INFO L290 TraceCheckUtils]: 10: Hoare triple {23#false} assume !false; {23#false} is VALID [2022-04-08 04:07:38,450 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 04:07:38,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:07:38,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175906155] [2022-04-08 04:07:38,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175906155] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:07:38,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:07:38,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 04:07:38,454 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:07:38,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1497522018] [2022-04-08 04:07:38,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1497522018] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:07:38,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:07:38,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 04:07:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853492176] [2022-04-08 04:07:38,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:07:38,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 [2022-04-08 04:07:38,463 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:07:38,465 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2022-04-08 04:07:38,479 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:38,479 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 04:07:38,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:38,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 04:07:38,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 04:07:38,505 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2022-04-08 04:07:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:38,575 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-04-08 04:07:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 04:07:38,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 [2022-04-08 04:07:38,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:07:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2022-04-08 04:07:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2022-04-08 04:07:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2022-04-08 04:07:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2022-04-08 04:07:38,585 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 34 transitions. [2022-04-08 04:07:38,638 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:38,643 INFO L225 Difference]: With dead ends: 30 [2022-04-08 04:07:38,643 INFO L226 Difference]: Without dead ends: 13 [2022-04-08 04:07:38,645 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 04:07:38,647 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 04:07:38,647 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 04:07:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-08 04:07:38,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-08 04:07:38,666 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:07:38,666 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,667 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,667 INFO L87 Difference]: Start difference. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:38,669 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-04-08 04:07:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-04-08 04:07:38,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:07:38,669 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:07:38,670 INFO L74 IsIncluded]: Start isIncluded. First operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 13 states. [2022-04-08 04:07:38,670 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 13 states. [2022-04-08 04:07:38,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:38,672 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-04-08 04:07:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-04-08 04:07:38,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:07:38,672 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:07:38,672 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:07:38,672 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:07:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-04-08 04:07:38,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2022-04-08 04:07:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:07:38,675 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-04-08 04:07:38,675 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2022-04-08 04:07:38,675 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 13 states and 14 transitions. [2022-04-08 04:07:38,687 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-04-08 04:07:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-08 04:07:38,688 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:07:38,688 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:07:38,688 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 04:07:38,689 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:07:38,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:07:38,689 INFO L85 PathProgramCache]: Analyzing trace with hash 482524834, now seen corresponding path program 1 times [2022-04-08 04:07:38,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:38,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [679214917] [2022-04-08 04:07:38,690 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 04:07:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash 482524834, now seen corresponding path program 2 times [2022-04-08 04:07:38,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:07:38,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412338437] [2022-04-08 04:07:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:07:38,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:07:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:07:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 04:07:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:07:38,779 INFO L290 TraceCheckUtils]: 0: Hoare triple {148#(and (= |#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(12, 2);call #Ultimate.allocInit(12, 3); {142#true} is VALID [2022-04-08 04:07:38,779 INFO L290 TraceCheckUtils]: 1: Hoare triple {142#true} assume true; {142#true} is VALID [2022-04-08 04:07:38,780 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {142#true} {142#true} #40#return; {142#true} is VALID [2022-04-08 04:07:38,780 INFO L272 TraceCheckUtils]: 0: Hoare triple {142#true} call ULTIMATE.init(); {148#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 04:07:38,782 INFO L290 TraceCheckUtils]: 1: Hoare triple {148#(and (= |#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(12, 2);call #Ultimate.allocInit(12, 3); {142#true} is VALID [2022-04-08 04:07:38,782 INFO L290 TraceCheckUtils]: 2: Hoare triple {142#true} assume true; {142#true} is VALID [2022-04-08 04:07:38,782 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {142#true} {142#true} #40#return; {142#true} is VALID [2022-04-08 04:07:38,782 INFO L272 TraceCheckUtils]: 4: Hoare triple {142#true} call #t~ret5 := main(); {142#true} is VALID [2022-04-08 04:07:38,783 INFO L290 TraceCheckUtils]: 5: Hoare triple {142#true} ~x~0 := 0; {147#(= main_~x~0 0)} is VALID [2022-04-08 04:07:38,784 INFO L290 TraceCheckUtils]: 6: Hoare triple {147#(= main_~x~0 0)} assume !(~x~0 % 4294967296 < 100000000); {143#false} is VALID [2022-04-08 04:07:38,785 INFO L272 TraceCheckUtils]: 7: Hoare triple {143#false} call __VERIFIER_assert((if 100000001 == ~x~0 % 4294967296 then 1 else 0)); {143#false} is VALID [2022-04-08 04:07:38,785 INFO L290 TraceCheckUtils]: 8: Hoare triple {143#false} ~cond := #in~cond; {143#false} is VALID [2022-04-08 04:07:38,785 INFO L290 TraceCheckUtils]: 9: Hoare triple {143#false} assume 0 == ~cond; {143#false} is VALID [2022-04-08 04:07:38,786 INFO L290 TraceCheckUtils]: 10: Hoare triple {143#false} assume !false; {143#false} is VALID [2022-04-08 04:07:38,786 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 04:07:38,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:07:38,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412338437] [2022-04-08 04:07:38,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412338437] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:07:38,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:07:38,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 04:07:38,789 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:07:38,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [679214917] [2022-04-08 04:07:38,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [679214917] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:07:38,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:07:38,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 04:07:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880472791] [2022-04-08 04:07:38,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:07:38,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:07:38,790 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:07:38,790 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,801 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:38,801 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-08 04:07:38,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:38,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-08 04:07:38,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 04:07:38,803 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:38,877 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-04-08 04:07:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-08 04:07:38,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:07:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:07:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2022-04-08 04:07:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2022-04-08 04:07:38,881 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 26 transitions. [2022-04-08 04:07:38,927 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:38,928 INFO L225 Difference]: With dead ends: 22 [2022-04-08 04:07:38,928 INFO L226 Difference]: Without dead ends: 15 [2022-04-08 04:07:38,929 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-08 04:07:38,929 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 04:07:38,930 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 04:07:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-08 04:07:38,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-08 04:07:38,933 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:07:38,933 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,933 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,934 INFO L87 Difference]: Start difference. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:38,935 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-04-08 04:07:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-04-08 04:07:38,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:07:38,935 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:07:38,935 INFO L74 IsIncluded]: Start isIncluded. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 15 states. [2022-04-08 04:07:38,936 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 15 states. [2022-04-08 04:07:38,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:38,937 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-04-08 04:07:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-04-08 04:07:38,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:07:38,937 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:07:38,937 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:07:38,937 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:07:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-04-08 04:07:38,939 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-04-08 04:07:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:07:38,939 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-04-08 04:07:38,939 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:38,939 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 15 states and 16 transitions. [2022-04-08 04:07:38,961 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-04-08 04:07:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-08 04:07:38,962 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:07:38,962 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:07:38,962 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-08 04:07:38,962 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:07:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:07:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash 925229631, now seen corresponding path program 1 times [2022-04-08 04:07:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:38,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [169592440] [2022-04-08 04:07:41,050 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-08 04:07:41,243 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-08 04:07:41,245 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|] 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 04:07:41,248 INFO L158 Benchmark]: Toolchain (without parser) took 3523.10ms. Allocated memory is still 186.6MB. Free memory was 137.9MB in the beginning and 134.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.1MB. Max. memory is 8.0GB. [2022-04-08 04:07:41,248 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 04:07:41,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.24ms. Allocated memory is still 186.6MB. Free memory was 137.8MB in the beginning and 165.7MB in the end (delta: -28.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-08 04:07:41,249 INFO L158 Benchmark]: Boogie Preprocessor took 22.66ms. Allocated memory is still 186.6MB. Free memory was 165.7MB in the beginning and 164.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 04:07:41,249 INFO L158 Benchmark]: RCFGBuilder took 211.77ms. Allocated memory is still 186.6MB. Free memory was 164.1MB in the beginning and 154.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 04:07:41,249 INFO L158 Benchmark]: TraceAbstraction took 3129.83ms. Allocated memory is still 186.6MB. Free memory was 153.5MB in the beginning and 134.4MB in the end (delta: 19.1MB). Peak memory consumption was 20.2MB. Max. memory is 8.0GB. [2022-04-08 04:07:41,251 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 0.10ms. Allocated memory is still 186.6MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 154.24ms. Allocated memory is still 186.6MB. Free memory was 137.8MB in the beginning and 165.7MB in the end (delta: -28.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.66ms. Allocated memory is still 186.6MB. Free memory was 165.7MB in the beginning and 164.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 211.77ms. Allocated memory is still 186.6MB. Free memory was 164.1MB in the beginning and 154.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3129.83ms. Allocated memory is still 186.6MB. Free memory was 153.5MB in the beginning and 134.4MB in the end (delta: 19.1MB). Peak memory consumption was 20.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: free variables [|v_main_#t~post4_4|] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: free variables [|v_main_#t~post4_4|]: 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 04:07:41,275 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...