/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 05:59:19,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 05:59:19,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 05:59:19,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 05:59:19,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 05:59:19,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 05:59:19,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 05:59:19,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-15 05:59:19,873 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 05:59:19,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 05:59:19,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 05:59:19,874 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-15 05:59:19,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 05:59:19,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-15 05:59:19,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 05:59:19,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 05:59:19,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 05:59:19,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 05:59:19,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 05:59:19,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 05:59:19,876 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 05:59:19,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 05:59:19,877 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-15 05:59:19,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 05:59:20,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 05:59:20,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 05:59:20,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 05:59:20,093 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 05:59:20,094 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 05:59:20,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2022-04-15 05:59:20,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20b364c9/2911208c67ec45208a496c0952d8e0ce/FLAG38f64c679 [2022-04-15 05:59:20,455 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 05:59:20,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2022-04-15 05:59:20,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20b364c9/2911208c67ec45208a496c0952d8e0ce/FLAG38f64c679 [2022-04-15 05:59:20,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20b364c9/2911208c67ec45208a496c0952d8e0ce [2022-04-15 05:59:20,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 05:59:20,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 05:59:20,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 05:59:20,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 05:59:20,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 05:59:20,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 05:59:20" (1/1) ... [2022-04-15 05:59:20,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebc25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:20, skipping insertion in model container [2022-04-15 05:59:20,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 05:59:20" (1/1) ... [2022-04-15 05:59:20,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 05:59:20,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 05:59:21,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c[459,472] [2022-04-15 05:59:21,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 05:59:21,120 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 05:59:21,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c[459,472] [2022-04-15 05:59:21,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 05:59:21,150 INFO L208 MainTranslator]: Completed translation [2022-04-15 05:59:21,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21 WrapperNode [2022-04-15 05:59:21,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 05:59:21,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 05:59:21,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 05:59:21,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 05:59:21,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21" (1/1) ... [2022-04-15 05:59:21,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21" (1/1) ... [2022-04-15 05:59:21,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21" (1/1) ... [2022-04-15 05:59:21,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21" (1/1) ... [2022-04-15 05:59:21,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21" (1/1) ... [2022-04-15 05:59:21,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21" (1/1) ... [2022-04-15 05:59:21,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21" (1/1) ... [2022-04-15 05:59:21,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 05:59:21,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 05:59:21,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 05:59:21,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 05:59:21,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21" (1/1) ... [2022-04-15 05:59:21,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 05:59:21,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 05:59:21,217 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) [2022-04-15 05:59:21,234 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 [2022-04-15 05:59:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 05:59:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 05:59:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 05:59:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 05:59:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 05:59:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 05:59:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 05:59:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 05:59:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 05:59:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 05:59:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 05:59:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-15 05:59:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 05:59:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 05:59:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 05:59:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 05:59:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 05:59:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 05:59:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 05:59:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 05:59:21,293 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 05:59:21,295 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 05:59:21,440 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 05:59:21,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 05:59:21,444 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 05:59:21,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 05:59:21 BoogieIcfgContainer [2022-04-15 05:59:21,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 05:59:21,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 05:59:21,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 05:59:21,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 05:59:21,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 05:59:20" (1/3) ... [2022-04-15 05:59:21,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f20ca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 05:59:21, skipping insertion in model container [2022-04-15 05:59:21,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:59:21" (2/3) ... [2022-04-15 05:59:21,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f20ca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 05:59:21, skipping insertion in model container [2022-04-15 05:59:21,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 05:59:21" (3/3) ... [2022-04-15 05:59:21,464 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2022-04-15 05:59:21,467 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 05:59:21,467 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 05:59:21,501 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 05:59:21,505 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 [2022-04-15 05:59:21,505 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 05:59:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-04-15 05:59:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-15 05:59:21,531 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 05:59:21,531 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 05:59:21,532 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 05:59:21,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 05:59:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash -36402350, now seen corresponding path program 1 times [2022-04-15 05:59:21,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 05:59:21,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1097608913] [2022-04-15 05:59:21,549 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 05:59:21,549 INFO L85 PathProgramCache]: Analyzing trace with hash -36402350, now seen corresponding path program 2 times [2022-04-15 05:59:21,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 05:59:21,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572270653] [2022-04-15 05:59:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 05:59:21,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 05:59:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 05:59:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 05:59:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 05:59:21,915 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#(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(13, 2);call #Ultimate.allocInit(12, 3); {23#true} is VALID [2022-04-15 05:59:21,915 INFO L290 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-15 05:59:21,916 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #54#return; {23#true} is VALID [2022-04-15 05:59:21,918 INFO L272 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 05:59:21,918 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#(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(13, 2);call #Ultimate.allocInit(12, 3); {23#true} is VALID [2022-04-15 05:59:21,918 INFO L290 TraceCheckUtils]: 2: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-15 05:59:21,918 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23#true} {23#true} #54#return; {23#true} is VALID [2022-04-15 05:59:21,918 INFO L272 TraceCheckUtils]: 4: Hoare triple {23#true} call #t~ret6 := main(); {23#true} is VALID [2022-04-15 05:59:21,919 INFO L290 TraceCheckUtils]: 5: Hoare triple {23#true} ~x~0 := 1;~y~0 := #t~nondet4;havoc #t~nondet4; {28#(= (+ (- 1) main_~x~0) 0)} is VALID [2022-04-15 05:59:21,920 INFO L290 TraceCheckUtils]: 6: Hoare triple {28#(= (+ (- 1) main_~x~0) 0)} assume !!(~y~0 % 4294967296 > 0); {29#(and (= (+ (- 1) main_~x~0) 0) (<= (+ (* (div main_~y~0 4294967296) 4294967296) 1) main_~y~0))} is VALID [2022-04-15 05:59:21,921 INFO L290 TraceCheckUtils]: 7: Hoare triple {29#(and (= (+ (- 1) main_~x~0) 0) (<= (+ (* (div main_~y~0 4294967296) 4294967296) 1) main_~y~0))} assume !(~x~0 % 4294967296 < ~y~0 % 4294967296); {30#(and (<= (+ main_~y~0 (* 4294967296 (div main_~x~0 4294967296))) (+ (* (div main_~y~0 4294967296) 4294967296) main_~x~0)) (= main_~x~0 1) (<= (+ (* (div main_~y~0 4294967296) 4294967296) 1) main_~y~0))} is VALID [2022-04-15 05:59:21,923 INFO L272 TraceCheckUtils]: 8: Hoare triple {30#(and (<= (+ main_~y~0 (* 4294967296 (div main_~x~0 4294967296))) (+ (* (div main_~y~0 4294967296) 4294967296) main_~x~0)) (= main_~x~0 1) (<= (+ (* (div main_~y~0 4294967296) 4294967296) 1) main_~y~0))} call __VERIFIER_assert((if ~x~0 % 4294967296 == ~y~0 % 4294967296 then 1 else 0)); {31#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 05:59:21,923 INFO L290 TraceCheckUtils]: 9: Hoare triple {31#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {32#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 05:59:21,924 INFO L290 TraceCheckUtils]: 10: Hoare triple {32#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {24#false} is VALID [2022-04-15 05:59:21,924 INFO L290 TraceCheckUtils]: 11: Hoare triple {24#false} assume !false; {24#false} is VALID [2022-04-15 05:59:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 05:59:21,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 05:59:21,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572270653] [2022-04-15 05:59:21,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572270653] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 05:59:21,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 05:59:21,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-15 05:59:21,927 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 05:59:21,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1097608913] [2022-04-15 05:59:21,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1097608913] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 05:59:21,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 05:59:21,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-15 05:59:21,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821908005] [2022-04-15 05:59:21,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 05:59:21,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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 12 [2022-04-15 05:59:21,932 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 05:59:21,934 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-04-15 05:59:21,952 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 05:59:21,953 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-15 05:59:21,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 05:59:21,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-15 05:59:21,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-15 05:59:21,973 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-04-15 05:59:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 05:59:22,342 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-04-15 05:59:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-15 05:59:22,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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 12 [2022-04-15 05:59:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 05:59:22,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-04-15 05:59:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 52 transitions. [2022-04-15 05:59:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-04-15 05:59:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 52 transitions. [2022-04-15 05:59:22,352 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 52 transitions. [2022-04-15 05:59:22,395 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 05:59:22,401 INFO L225 Difference]: With dead ends: 42 [2022-04-15 05:59:22,402 INFO L226 Difference]: Without dead ends: 16 [2022-04-15 05:59:22,404 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-04-15 05:59:22,408 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-15 05:59:22,409 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 50 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-15 05:59:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-15 05:59:22,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-04-15 05:59:22,432 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 05:59:22,433 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-04-15 05:59:22,433 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-04-15 05:59:22,434 INFO L87 Difference]: Start difference. First operand 16 states. Second operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-04-15 05:59:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 05:59:22,439 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-04-15 05:59:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-04-15 05:59:22,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 05:59:22,439 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 05:59:22,440 INFO L74 IsIncluded]: Start isIncluded. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 16 states. [2022-04-15 05:59:22,440 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 16 states. [2022-04-15 05:59:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 05:59:22,446 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-04-15 05:59:22,446 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-04-15 05:59:22,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 05:59:22,446 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 05:59:22,447 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 05:59:22,447 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 05:59:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-04-15 05:59:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-04-15 05:59:22,449 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2022-04-15 05:59:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 05:59:22,450 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-04-15 05:59:22,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-04-15 05:59:22,453 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 16 states and 18 transitions. [2022-04-15 05:59:22,469 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 05:59:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-04-15 05:59:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-15 05:59:22,474 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 05:59:22,474 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 05:59:22,474 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 05:59:22,474 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 05:59:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 05:59:22,475 INFO L85 PathProgramCache]: Analyzing trace with hash 476304909, now seen corresponding path program 1 times [2022-04-15 05:59:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 05:59:22,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1338518753] [2022-04-15 05:59:42,579 WARN L970 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 05:59:46,787 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 05:59:59,080 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-15 05:59:59,083 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 05:59:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash -63328336, now seen corresponding path program 1 times [2022-04-15 05:59:59,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 05:59:59,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019132301] [2022-04-15 05:59:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 05:59:59,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 05:59:59,100 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 05:59:59,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822958954] [2022-04-15 05:59:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 05:59:59,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 05:59:59,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 05:59:59,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 05:59:59,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process