/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/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 03:35:30,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 03:35:30,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 03:35:30,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 03:35:30,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 03:35:30,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 03:35:30,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 03:35:30,489 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 03:35:30,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 03:35:30,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 03:35:30,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 03:35:30,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 03:35:30,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 03:35:30,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 03:35:30,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 03:35:30,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 03:35:30,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 03:35:30,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 03:35:30,503 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 03:35:30,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 03:35:30,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 03:35:30,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 03:35:30,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 03:35:30,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 03:35:30,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 03:35:30,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 03:35:30,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:35:30,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 03:35:30,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 03:35:30,504 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 03:35:30,504 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 03:35:30,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 03:35:30,504 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 03:35:30,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 03:35:30,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 03:35:30,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 03:35:30,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 03:35:30,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 03:35:30,734 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 03:35:30,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2022-04-08 03:35:30,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded9fcef2/e8715a1c9c1248699e401059b6348156/FLAG4069ef25d [2022-04-08 03:35:31,096 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 03:35:31,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2022-04-08 03:35:31,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded9fcef2/e8715a1c9c1248699e401059b6348156/FLAG4069ef25d [2022-04-08 03:35:31,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded9fcef2/e8715a1c9c1248699e401059b6348156 [2022-04-08 03:35:31,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 03:35:31,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 03:35:31,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 03:35:31,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 03:35:31,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 03:35:31,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b522ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31, skipping insertion in model container [2022-04-08 03:35:31,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 03:35:31,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 03:35:31,741 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/sum01-1.i[808,821] [2022-04-08 03:35:31,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:35:31,766 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 03:35:31,775 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/sum01-1.i[808,821] [2022-04-08 03:35:31,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:35:31,788 INFO L208 MainTranslator]: Completed translation [2022-04-08 03:35:31,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31 WrapperNode [2022-04-08 03:35:31,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 03:35:31,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 03:35:31,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 03:35:31,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 03:35:31,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 03:35:31,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 03:35:31,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 03:35:31,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 03:35:31,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31" (1/1) ... [2022-04-08 03:35:31,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:35:31,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 03:35:31,843 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 03:35:31,907 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 03:35:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 03:35:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 03:35:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 03:35:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 03:35:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 03:35:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 03:35:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 03:35:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-08 03:35:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-08 03:35:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 03:35:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 03:35:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 03:35:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-08 03:35:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 03:35:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 03:35:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 03:35:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 03:35:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 03:35:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 03:35:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 03:35:31,980 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 03:35:31,982 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 03:35:32,113 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 03:35:32,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 03:35:32,117 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 03:35:32,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:35:32 BoogieIcfgContainer [2022-04-08 03:35:32,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 03:35:32,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 03:35:32,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 03:35:32,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 03:35:32,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 03:35:31" (1/3) ... [2022-04-08 03:35:32,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f497d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:35:32, skipping insertion in model container [2022-04-08 03:35:32,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:35:31" (2/3) ... [2022-04-08 03:35:32,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f497d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:35:32, skipping insertion in model container [2022-04-08 03:35:32,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:35:32" (3/3) ... [2022-04-08 03:35:32,124 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2022-04-08 03:35:32,127 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 03:35:32,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 03:35:32,169 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 03:35:32,173 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 03:35:32,174 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 03:35:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 03:35:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-08 03:35:32,194 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:35:32,194 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:35:32,196 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:35:32,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:35:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1466806487, now seen corresponding path program 1 times [2022-04-08 03:35:32,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:35:32,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [231345907] [2022-04-08 03:35:32,218 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 03:35:32,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1466806487, now seen corresponding path program 2 times [2022-04-08 03:35:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:35:32,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501936490] [2022-04-08 03:35:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:35:32,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:35:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:35:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:35:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:35:32,383 INFO L290 TraceCheckUtils]: 0: Hoare triple {28#(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(10, 2); {23#true} is VALID [2022-04-08 03:35:32,383 INFO L290 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-08 03:35:32,383 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #47#return; {23#true} is VALID [2022-04-08 03:35:32,385 INFO L272 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {28#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:35:32,385 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#(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(10, 2); {23#true} is VALID [2022-04-08 03:35:32,385 INFO L290 TraceCheckUtils]: 2: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-08 03:35:32,385 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23#true} {23#true} #47#return; {23#true} is VALID [2022-04-08 03:35:32,385 INFO L272 TraceCheckUtils]: 4: Hoare triple {23#true} call #t~ret3 := main(); {23#true} is VALID [2022-04-08 03:35:32,386 INFO L290 TraceCheckUtils]: 5: Hoare triple {23#true} havoc ~i~0;~n~0 := (if #t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then #t~nondet1 % 4294967296 % 4294967296 else #t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc #t~nondet1;~sn~0 := 0;~i~0 := 1; {23#true} is VALID [2022-04-08 03:35:32,386 INFO L290 TraceCheckUtils]: 6: Hoare triple {23#true} assume !true; {24#false} is VALID [2022-04-08 03:35:32,386 INFO L272 TraceCheckUtils]: 7: Hoare triple {24#false} call __VERIFIER_assert((if ~sn~0 == 2 * ~n~0 || 0 == ~sn~0 then 1 else 0)); {24#false} is VALID [2022-04-08 03:35:32,388 INFO L290 TraceCheckUtils]: 8: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2022-04-08 03:35:32,388 INFO L290 TraceCheckUtils]: 9: Hoare triple {24#false} assume 0 == ~cond; {24#false} is VALID [2022-04-08 03:35:32,388 INFO L290 TraceCheckUtils]: 10: Hoare triple {24#false} assume !false; {24#false} is VALID [2022-04-08 03:35:32,388 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 03:35:32,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:35:32,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501936490] [2022-04-08 03:35:32,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501936490] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:35:32,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:35:32,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 03:35:32,393 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:35:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [231345907] [2022-04-08 03:35:32,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [231345907] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:35:32,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:35:32,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 03:35:32,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103109105] [2022-04-08 03:35:32,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:35:32,398 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 03:35:32,399 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:35:32,401 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 03:35:32,414 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 03:35:32,417 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 03:35:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:35:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 03:35:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 03:35:32,448 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 03:35:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:35:32,523 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-04-08 03:35:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 03:35:32,524 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 03:35:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:35:32,525 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 03:35:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-04-08 03:35:32,529 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 03:35:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-04-08 03:35:32,532 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 35 transitions. [2022-04-08 03:35:32,564 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:35:32,569 INFO L225 Difference]: With dead ends: 31 [2022-04-08 03:35:32,569 INFO L226 Difference]: Without dead ends: 14 [2022-04-08 03:35:32,571 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 03:35:32,573 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 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 03:35:32,574 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 03:35:32,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-08 03:35:32,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-08 03:35:32,592 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:35:32,592 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 03:35:32,592 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 03:35:32,593 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 03:35:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:35:32,594 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-08 03:35:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 03:35:32,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:35:32,595 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:35:32,595 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 14 states. [2022-04-08 03:35:32,595 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 14 states. [2022-04-08 03:35:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:35:32,597 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-08 03:35:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 03:35:32,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:35:32,597 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:35:32,597 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:35:32,597 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:35:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 03:35:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-08 03:35:32,599 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-04-08 03:35:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:35:32,600 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-08 03:35:32,600 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 03:35:32,600 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 15 transitions. [2022-04-08 03:35:32,628 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:35:32,629 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 03:35:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-08 03:35:32,629 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:35:32,629 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:35:32,629 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 03:35:32,630 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:35:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:35:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1456647756, now seen corresponding path program 1 times [2022-04-08 03:35:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:35:32,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1482729903] [2022-04-08 03:35:32,631 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 03:35:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1456647756, now seen corresponding path program 2 times [2022-04-08 03:35:32,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:35:32,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702251920] [2022-04-08 03:35:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:35:32,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:35:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:35:32,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:35:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:35:32,756 INFO L290 TraceCheckUtils]: 0: Hoare triple {157#(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(10, 2); {149#true} is VALID [2022-04-08 03:35:32,756 INFO L290 TraceCheckUtils]: 1: Hoare triple {149#true} assume true; {149#true} is VALID [2022-04-08 03:35:32,756 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {149#true} {149#true} #47#return; {149#true} is VALID [2022-04-08 03:35:32,758 INFO L272 TraceCheckUtils]: 0: Hoare triple {149#true} call ULTIMATE.init(); {157#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:35:32,758 INFO L290 TraceCheckUtils]: 1: Hoare triple {157#(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(10, 2); {149#true} is VALID [2022-04-08 03:35:32,758 INFO L290 TraceCheckUtils]: 2: Hoare triple {149#true} assume true; {149#true} is VALID [2022-04-08 03:35:32,759 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {149#true} {149#true} #47#return; {149#true} is VALID [2022-04-08 03:35:32,759 INFO L272 TraceCheckUtils]: 4: Hoare triple {149#true} call #t~ret3 := main(); {149#true} is VALID [2022-04-08 03:35:32,760 INFO L290 TraceCheckUtils]: 5: Hoare triple {149#true} havoc ~i~0;~n~0 := (if #t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then #t~nondet1 % 4294967296 % 4294967296 else #t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc #t~nondet1;~sn~0 := 0;~i~0 := 1; {154#(or (= main_~sn~0 0) (= (* main_~n~0 2) main_~sn~0))} is VALID [2022-04-08 03:35:32,762 INFO L290 TraceCheckUtils]: 6: Hoare triple {154#(or (= main_~sn~0 0) (= (* main_~n~0 2) main_~sn~0))} assume !(~i~0 <= ~n~0); {154#(or (= main_~sn~0 0) (= (* main_~n~0 2) main_~sn~0))} is VALID [2022-04-08 03:35:32,763 INFO L272 TraceCheckUtils]: 7: Hoare triple {154#(or (= main_~sn~0 0) (= (* main_~n~0 2) main_~sn~0))} call __VERIFIER_assert((if ~sn~0 == 2 * ~n~0 || 0 == ~sn~0 then 1 else 0)); {155#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 03:35:32,763 INFO L290 TraceCheckUtils]: 8: Hoare triple {155#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {156#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 03:35:32,764 INFO L290 TraceCheckUtils]: 9: Hoare triple {156#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {150#false} is VALID [2022-04-08 03:35:32,764 INFO L290 TraceCheckUtils]: 10: Hoare triple {150#false} assume !false; {150#false} is VALID [2022-04-08 03:35:32,764 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 03:35:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:35:32,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702251920] [2022-04-08 03:35:32,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702251920] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:35:32,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:35:32,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 03:35:32,765 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:35:32,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1482729903] [2022-04-08 03:35:32,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1482729903] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:35:32,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:35:32,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 03:35:32,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484721181] [2022-04-08 03:35:32,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:35:32,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 03:35:32,766 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:35:32,766 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 03:35:32,784 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 03:35:32,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 03:35:32,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:35:32,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 03:35:32,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 03:35:32,785 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 03:35:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:35:32,930 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-04-08 03:35:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 03:35:32,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 03:35:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:35:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 03:35:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-04-08 03:35:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 03:35:32,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-04-08 03:35:32,940 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 24 transitions. [2022-04-08 03:35:32,960 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:35:32,963 INFO L225 Difference]: With dead ends: 22 [2022-04-08 03:35:32,963 INFO L226 Difference]: Without dead ends: 17 [2022-04-08 03:35:32,963 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-08 03:35:32,966 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 03:35:32,967 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 29 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 03:35:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-08 03:35:32,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-08 03:35:32,973 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:35:32,973 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:35:32,973 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:35:32,974 INFO L87 Difference]: Start difference. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:35:32,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:35:32,975 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-08 03:35:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-08 03:35:32,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:35:32,975 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:35:32,976 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 17 states. [2022-04-08 03:35:32,977 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 17 states. [2022-04-08 03:35:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:35:32,979 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-08 03:35:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-08 03:35:32,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:35:32,979 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:35:32,979 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:35:32,979 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:35:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:35:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-08 03:35:32,981 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-08 03:35:32,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:35:32,981 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-08 03:35:32,982 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 03:35:32,982 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 19 transitions. [2022-04-08 03:35:32,998 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:35:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-08 03:35:32,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-08 03:35:32,998 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:35:32,999 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:35:32,999 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-08 03:35:33,000 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:35:33,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:35:33,000 INFO L85 PathProgramCache]: Analyzing trace with hash 193151625, now seen corresponding path program 1 times [2022-04-08 03:35:33,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:35:33,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [659039623] [2022-04-08 03:35:33,457 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-08 03:35:33,460 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: free variables [|v_main_#t~post2_4|] at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.<init>(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.<init>(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.<init>(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(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.<init>(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 03:35:33,469 INFO L158 Benchmark]: Toolchain (without parser) took 1939.13ms. Allocated memory was 175.1MB in the beginning and 220.2MB in the end (delta: 45.1MB). Free memory was 116.3MB in the beginning and 180.7MB in the end (delta: -64.5MB). Peak memory consumption was 64.9MB. Max. memory is 8.0GB. [2022-04-08 03:35:33,469 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 175.1MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 03:35:33,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.59ms. Allocated memory was 175.1MB in the beginning and 220.2MB in the end (delta: 45.1MB). Free memory was 116.1MB in the beginning and 192.0MB in the end (delta: -75.9MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-04-08 03:35:33,470 INFO L158 Benchmark]: Boogie Preprocessor took 30.26ms. Allocated memory is still 220.2MB. Free memory was 192.0MB in the beginning and 190.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-08 03:35:33,470 INFO L158 Benchmark]: RCFGBuilder took 297.79ms. Allocated memory is still 220.2MB. Free memory was 190.4MB in the beginning and 179.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 03:35:33,470 INFO L158 Benchmark]: TraceAbstraction took 1348.55ms. Allocated memory is still 220.2MB. Free memory was 178.9MB in the beginning and 180.7MB in the end (delta: -1.9MB). Peak memory consumption was 80.9MB. Max. memory is 8.0GB. [2022-04-08 03:35:33,472 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 0.17ms. Allocated memory is still 175.1MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 257.59ms. Allocated memory was 175.1MB in the beginning and 220.2MB in the end (delta: 45.1MB). Free memory was 116.1MB in the beginning and 192.0MB in the end (delta: -75.9MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.26ms. Allocated memory is still 220.2MB. Free memory was 192.0MB in the beginning and 190.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 297.79ms. Allocated memory is still 220.2MB. Free memory was 190.4MB in the beginning and 179.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1348.55ms. Allocated memory is still 220.2MB. Free memory was 178.9MB in the beginning and 180.7MB in the end (delta: -1.9MB). Peak memory consumption was 80.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: free variables [|v_main_#t~post2_4|] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: free variables [|v_main_#t~post2_4|]: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.<init>(UnmodifiableTransFormula.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-08 03:35:33,497 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...