/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/count_up_down-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 12:01:35,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 12:01:35,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 12:01:35,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 12:01:35,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 12:01:35,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 12:01:35,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 12:01:35,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-15 12:01:35,864 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 12:01:35,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 12:01:35,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 12:01:35,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 12:01:35,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 12:01:35,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 12:01:35,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 12:01:35,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 12:01:35,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 12:01:35,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 12:01:35,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 12:01:35,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 12:01:35,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 12:01:35,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 12:01:35,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 12:01:35,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 12:01:35,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 12:01:35,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 12:01:35,868 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 12:01:35,868 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 12:01:35,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 12:01:35,868 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-15 12:01:35,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 12:01:36,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 12:01:36,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 12:01:36,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 12:01:36,267 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 12:01:36,273 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 12:01:36,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down-1.c [2022-04-15 12:01:36,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad571e1f/7a5fb6c7e5964023996011007e032270/FLAGdd33a06bb [2022-04-15 12:01:36,952 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 12:01:36,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-1.c [2022-04-15 12:01:36,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad571e1f/7a5fb6c7e5964023996011007e032270/FLAGdd33a06bb [2022-04-15 12:01:37,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad571e1f/7a5fb6c7e5964023996011007e032270 [2022-04-15 12:01:37,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 12:01:37,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 12:01:37,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 12:01:37,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 12:01:37,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 12:01:37,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58089883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37, skipping insertion in model container [2022-04-15 12:01:37,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 12:01:37,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 12:01:37,648 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/count_up_down-1.c[327,340] [2022-04-15 12:01:37,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 12:01:37,665 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 12:01:37,675 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/count_up_down-1.c[327,340] [2022-04-15 12:01:37,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 12:01:37,689 INFO L208 MainTranslator]: Completed translation [2022-04-15 12:01:37,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37 WrapperNode [2022-04-15 12:01:37,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 12:01:37,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 12:01:37,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 12:01:37,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 12:01:37,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 12:01:37,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 12:01:37,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 12:01:37,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 12:01:37,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37" (1/1) ... [2022-04-15 12:01:37,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 12:01:37,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 12:01:37,753 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 12:01:37,815 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 12:01:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 12:01:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 12:01:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 12:01:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 12:01:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 12:01:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 12:01:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 12:01:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 12:01:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 12:01:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 12:01:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-15 12:01:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 12:01:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 12:01:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 12:01:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 12:01:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 12:01:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 12:01:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 12:01:37,969 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 12:01:37,971 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 12:01:38,175 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 12:01:38,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 12:01:38,181 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 12:01:38,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:01:38 BoogieIcfgContainer [2022-04-15 12:01:38,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 12:01:38,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 12:01:38,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 12:01:38,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 12:01:38,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 12:01:37" (1/3) ... [2022-04-15 12:01:38,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf30150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:01:38, skipping insertion in model container [2022-04-15 12:01:38,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:01:37" (2/3) ... [2022-04-15 12:01:38,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf30150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:01:38, skipping insertion in model container [2022-04-15 12:01:38,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:01:38" (3/3) ... [2022-04-15 12:01:38,190 INFO L111 eAbstractionObserver]: Analyzing ICFG count_up_down-1.c [2022-04-15 12:01:38,213 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 12:01:38,214 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 12:01:38,328 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 12:01:38,342 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 12:01:38,342 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 12:01:38,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 12:01:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 12:01:38,376 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 12:01:38,377 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 12:01:38,377 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 12:01:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 12:01:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 1 times [2022-04-15 12:01:38,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 12:01:38,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [40009638] [2022-04-15 12:01:38,447 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 12:01:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 2 times [2022-04-15 12:01:38,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 12:01:38,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407189683] [2022-04-15 12:01:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 12:01:38,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 12:01:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:01:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 12:01:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:01:39,085 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(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(18, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-04-15 12:01:39,085 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-15 12:01:39,085 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #36#return; {21#true} is VALID [2022-04-15 12:01:39,087 INFO L272 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {30#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 12:01:39,087 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(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(18, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-04-15 12:01:39,088 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-15 12:01:39,088 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} #36#return; {21#true} is VALID [2022-04-15 12:01:39,088 INFO L272 TraceCheckUtils]: 4: Hoare triple {21#true} call #t~ret7 := main(); {21#true} is VALID [2022-04-15 12:01:39,089 INFO L290 TraceCheckUtils]: 5: Hoare triple {21#true} ~n~0 := #t~nondet4;havoc #t~nondet4;~x~0 := ~n~0;~y~0 := 0; {26#(and (= 0 (+ main_~x~0 (* (- 1) main_~n~0))) (= main_~y~0 0))} is VALID [2022-04-15 12:01:39,093 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#(and (= 0 (+ main_~x~0 (* (- 1) main_~n~0))) (= main_~y~0 0))} assume !(~x~0 % 4294967296 > 0); {27#(and (= main_~y~0 0) (<= (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0) (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296))))} is VALID [2022-04-15 12:01:39,095 INFO L272 TraceCheckUtils]: 7: Hoare triple {27#(and (= main_~y~0 0) (<= (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0) (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296))))} call __VERIFIER_assert((if ~y~0 % 4294967296 == ~n~0 % 4294967296 then 1 else 0)); {28#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 12:01:39,095 INFO L290 TraceCheckUtils]: 8: Hoare triple {28#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {29#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 12:01:39,096 INFO L290 TraceCheckUtils]: 9: Hoare triple {29#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {22#false} is VALID [2022-04-15 12:01:39,096 INFO L290 TraceCheckUtils]: 10: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-04-15 12:01:39,097 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 12:01:39,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 12:01:39,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407189683] [2022-04-15 12:01:39,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407189683] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:01:39,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:01:39,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-15 12:01:39,105 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 12:01:39,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [40009638] [2022-04-15 12:01:39,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [40009638] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:01:39,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:01:39,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-15 12:01:39,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727242540] [2022-04-15 12:01:39,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 12:01:39,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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 [2022-04-15 12:01:39,114 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 12:01:39,117 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-04-15 12:01:39,135 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:01:39,135 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-15 12:01:39,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 12:01:39,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-15 12:01:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-04-15 12:01:39,183 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-04-15 12:01:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:01:39,710 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-04-15 12:01:39,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-15 12:01:39,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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 [2022-04-15 12:01:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 12:01:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-04-15 12:01:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 44 transitions. [2022-04-15 12:01:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-04-15 12:01:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 44 transitions. [2022-04-15 12:01:39,745 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 44 transitions. [2022-04-15 12:01:39,829 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:01:39,835 INFO L225 Difference]: With dead ends: 37 [2022-04-15 12:01:39,835 INFO L226 Difference]: Without dead ends: 13 [2022-04-15 12:01:39,838 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-15 12:01:39,840 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-15 12:01:39,841 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 40 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-15 12:01:39,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-15 12:01:39,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-15 12:01:39,900 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 12:01:39,900 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 12:01:39,901 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 12:01:39,901 INFO L87 Difference]: Start difference. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 12:01:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:01:39,903 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-04-15 12:01:39,903 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-15 12:01:39,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 12:01:39,903 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 12:01:39,903 INFO L74 IsIncluded]: Start isIncluded. First operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 13 states. [2022-04-15 12:01:39,904 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 13 states. [2022-04-15 12:01:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:01:39,905 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-04-15 12:01:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-15 12:01:39,906 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 12:01:39,906 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 12:01:39,906 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 12:01:39,906 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 12:01:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 12:01:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-15 12:01:39,920 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-04-15 12:01:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 12:01:39,920 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-15 12:01:39,921 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-04-15 12:01:39,921 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 13 states and 13 transitions. [2022-04-15 12:01:39,935 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:01:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-15 12:01:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-15 12:01:39,935 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 12:01:39,936 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 12:01:39,936 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 12:01:39,936 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 12:01:39,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 12:01:39,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1718713523, now seen corresponding path program 1 times [2022-04-15 12:01:39,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 12:01:39,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [558100527] [2022-04-15 12:02:08,736 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 12:02:08,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1718302764, now seen corresponding path program 1 times [2022-04-15 12:02:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 12:02:08,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212431534] [2022-04-15 12:02:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 12:02:08,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 12:02:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:02:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 12:02:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:02:09,205 INFO L290 TraceCheckUtils]: 0: Hoare triple {179#(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(18, 2);call #Ultimate.allocInit(12, 3); {169#true} is VALID [2022-04-15 12:02:09,205 INFO L290 TraceCheckUtils]: 1: Hoare triple {169#true} assume true; {169#true} is VALID [2022-04-15 12:02:09,206 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {169#true} {169#true} #36#return; {169#true} is VALID [2022-04-15 12:02:09,206 INFO L272 TraceCheckUtils]: 0: Hoare triple {169#true} call ULTIMATE.init(); {179#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 12:02:09,207 INFO L290 TraceCheckUtils]: 1: Hoare triple {179#(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(18, 2);call #Ultimate.allocInit(12, 3); {169#true} is VALID [2022-04-15 12:02:09,208 INFO L290 TraceCheckUtils]: 2: Hoare triple {169#true} assume true; {169#true} is VALID [2022-04-15 12:02:09,208 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {169#true} {169#true} #36#return; {169#true} is VALID [2022-04-15 12:02:09,208 INFO L272 TraceCheckUtils]: 4: Hoare triple {169#true} call #t~ret7 := main(); {169#true} is VALID [2022-04-15 12:02:09,209 INFO L290 TraceCheckUtils]: 5: Hoare triple {169#true} ~n~0 := #t~nondet4;havoc #t~nondet4;~x~0 := ~n~0;~y~0 := 0; {174#(and (= main_~n~0 main_~x~0) (= main_~y~0 0))} is VALID [2022-04-15 12:02:09,212 INFO L290 TraceCheckUtils]: 6: Hoare triple {174#(and (= main_~n~0 main_~x~0) (= main_~y~0 0))} [40] L17-2-->L17-3_primed: Formula: (or (and (= v_main_~y~0_In_1 v_main_~y~0_Out_2) (= v_main_~x~0_In_1 v_main_~x~0_Out_2)) (and (= 0 |v_main_#t~post6_Out_2|) (< 0 (mod (+ v_main_~x~0_Out_2 1) 4294967296)) (= |v_main_#t~post5_Out_2| 0) (= (+ v_main_~x~0_In_1 v_main_~y~0_In_1) (+ v_main_~x~0_Out_2 v_main_~y~0_Out_2)) (<= v_main_~x~0_Out_2 v_main_~x~0_In_1))) InVars {main_~x~0=v_main_~x~0_In_1, main_~y~0=v_main_~y~0_In_1} OutVars{main_~y~0=v_main_~y~0_Out_2, main_#t~post5=|v_main_#t~post5_Out_2|, main_~x~0=v_main_~x~0_Out_2, main_#t~post6=|v_main_#t~post6_Out_2|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post5, main_#t~post6] {175#(or (and (or (not (<= (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296) 1) (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0))) (<= main_~n~0 (+ main_~y~0 main_~x~0))) (<= (+ (div main_~y~0 4294967296) (div (+ main_~x~0 1) 4294967296)) (div main_~n~0 4294967296)) (or (and (<= (+ (div main_~y~0 4294967296) (div main_~x~0 4294967296) 1) (div main_~n~0 4294967296)) (<= main_~n~0 (+ main_~y~0 main_~x~0))) (<= (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296)) (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0)))) (and (= main_~y~0 0) (<= (+ main_~x~0 1) (* (div (+ main_~x~0 1) 4294967296) 4294967296))))} is VALID [2022-04-15 12:02:09,215 INFO L290 TraceCheckUtils]: 7: Hoare triple {175#(or (and (or (not (<= (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296) 1) (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0))) (<= main_~n~0 (+ main_~y~0 main_~x~0))) (<= (+ (div main_~y~0 4294967296) (div (+ main_~x~0 1) 4294967296)) (div main_~n~0 4294967296)) (or (and (<= (+ (div main_~y~0 4294967296) (div main_~x~0 4294967296) 1) (div main_~n~0 4294967296)) (<= main_~n~0 (+ main_~y~0 main_~x~0))) (<= (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296)) (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0)))) (and (= main_~y~0 0) (<= (+ main_~x~0 1) (* (div (+ main_~x~0 1) 4294967296) 4294967296))))} [39] L17-3_primed-->L17-3: Formula: (not (< 0 (mod v_main_~x~0_2 4294967296))) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[] {176#(and (< (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0) (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296) 1)) (<= (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296)) (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0)))} is VALID [2022-04-15 12:02:09,216 INFO L272 TraceCheckUtils]: 8: Hoare triple {176#(and (< (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0) (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296) 1)) (<= (+ main_~y~0 (* (div main_~n~0 4294967296) 4294967296)) (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0)))} call __VERIFIER_assert((if ~y~0 % 4294967296 == ~n~0 % 4294967296 then 1 else 0)); {177#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 12:02:09,217 INFO L290 TraceCheckUtils]: 9: Hoare triple {177#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {178#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 12:02:09,218 INFO L290 TraceCheckUtils]: 10: Hoare triple {178#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {170#false} is VALID [2022-04-15 12:02:09,218 INFO L290 TraceCheckUtils]: 11: Hoare triple {170#false} assume !false; {170#false} is VALID [2022-04-15 12:02:09,218 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 12:02:09,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 12:02:09,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212431534] [2022-04-15 12:02:09,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212431534] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:02:09,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:02:09,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-15 12:02:09,345 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 12:02:09,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [558100527] [2022-04-15 12:02:09,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [558100527] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:02:09,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:02:09,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-15 12:02:09,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354605063] [2022-04-15 12:02:09,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 12:02:09,347 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 12:02:09,348 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 12:02:09,348 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 12:02:09,371 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 12:02:09,372 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-15 12:02:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 12:02:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-15 12:02:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-15 12:02:09,373 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. 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 12:02:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:02:09,803 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-04-15 12:02:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-15 12:02:09,803 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 12:02:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 12:02:09,804 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 12:02:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2022-04-15 12:02:09,805 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 12:02:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2022-04-15 12:02:09,806 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 13 transitions. [2022-04-15 12:02:09,873 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:02:09,873 INFO L225 Difference]: With dead ends: 13 [2022-04-15 12:02:09,873 INFO L226 Difference]: Without dead ends: 0 [2022-04-15 12:02:09,874 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-15 12:02:09,875 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-15 12:02:09,875 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-15 12:02:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-15 12:02:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-15 12:02:09,877 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 12:02:09,877 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 12:02:09,877 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 12:02:09,877 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 12:02:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:02:09,878 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 12:02:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 12:02:09,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 12:02:09,878 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 12:02:09,878 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 12:02:09,878 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 12:02:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:02:09,878 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 12:02:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 12:02:09,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 12:02:09,880 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 12:02:09,880 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 12:02:09,880 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 12:02:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 12:02:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-15 12:02:09,881 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-04-15 12:02:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 12:02:09,881 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-15 12:02:09,881 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 12:02:09,881 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-15 12:02:09,881 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:02:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 12:02:09,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 12:02:09,884 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-15 12:02:09,884 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-15 12:02:09,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-15 12:02:10,046 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-04-15 12:02:10,047 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-04-15 12:02:10,047 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-04-15 12:02:10,047 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2022-04-15 12:02:10,047 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 13 23) the Hoare annotation is: true [2022-04-15 12:02:10,047 INFO L878 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (or (let ((.cse0 (+ main_~x~0 1))) (and (< 0 (mod .cse0 4294967296)) (or (and (= .cse0 main_~n~0) (= main_~y~0 1)) (and (<= .cse0 main_~n~0) (< 0 (mod (+ main_~x~0 2) 4294967296)) (= main_~n~0 (+ main_~y~0 main_~x~0)))))) (and (= main_~n~0 main_~x~0) (= main_~y~0 0))) [2022-04-15 12:02:10,047 INFO L878 garLoopResultBuilder]: At program point L17-3(lines 17 21) the Hoare annotation is: (let ((.cse2 (* (div main_~n~0 4294967296) 4294967296))) (let ((.cse1 (+ main_~y~0 .cse2)) (.cse0 (+ (* (div main_~y~0 4294967296) 4294967296) main_~n~0))) (or (and (= 0 (+ main_~x~0 (* (- 1) main_~n~0))) (= main_~y~0 0) (<= .cse0 .cse1)) (and (< .cse0 (+ main_~y~0 .cse2 1)) (<= (+ main_~x~0 1) main_~n~0) (<= .cse1 .cse0) (= main_~n~0 (+ main_~y~0 main_~x~0)))))) [2022-04-15 12:02:10,048 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 13 23) the Hoare annotation is: true [2022-04-15 12:02:10,048 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-15 12:02:10,048 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-15 12:02:10,048 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-15 12:02:10,048 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-15 12:02:10,048 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-15 12:02:10,048 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-15 12:02:10,048 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-15 12:02:10,048 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2022-04-15 12:02:10,049 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-15 12:02:10,049 INFO L878 garLoopResultBuilder]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-15 12:02:10,049 INFO L878 garLoopResultBuilder]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-15 12:02:10,049 INFO L878 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-15 12:02:10,049 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-15 12:02:10,054 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-04-15 12:02:10,055 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-15 12:02:10,058 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 12:02:10,074 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-15 12:02:10,107 INFO L163 areAnnotationChecker]: CFG has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-15 12:02:10,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 12:02:10 BoogieIcfgContainer [2022-04-15 12:02:10,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-15 12:02:10,122 INFO L158 Benchmark]: Toolchain (without parser) took 32737.88ms. Allocated memory was 189.8MB in the beginning and 256.9MB in the end (delta: 67.1MB). Free memory was 165.5MB in the beginning and 207.8MB in the end (delta: -42.4MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. [2022-04-15 12:02:10,122 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 189.8MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 12:02:10,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.12ms. Allocated memory was 189.8MB in the beginning and 256.9MB in the end (delta: 67.1MB). Free memory was 165.2MB in the beginning and 229.9MB in the end (delta: -64.7MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-04-15 12:02:10,123 INFO L158 Benchmark]: Boogie Preprocessor took 29.75ms. Allocated memory is still 256.9MB. Free memory was 229.9MB in the beginning and 228.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-15 12:02:10,123 INFO L158 Benchmark]: RCFGBuilder took 462.42ms. Allocated memory is still 256.9MB. Free memory was 228.5MB in the beginning and 218.4MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-15 12:02:10,124 INFO L158 Benchmark]: TraceAbstraction took 31936.05ms. Allocated memory is still 256.9MB. Free memory was 218.0MB in the beginning and 207.8MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-15 12:02:10,125 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 189.8MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 290.12ms. Allocated memory was 189.8MB in the beginning and 256.9MB in the end (delta: 67.1MB). Free memory was 165.2MB in the beginning and 229.9MB in the end (delta: -64.7MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.75ms. Allocated memory is still 256.9MB. Free memory was 229.9MB in the beginning and 228.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 462.42ms. Allocated memory is still 256.9MB. Free memory was 228.5MB in the beginning and 218.4MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 31936.05ms. Allocated memory is still 256.9MB. Free memory was 218.0MB in the beginning and 207.8MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 20 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 30 PreInvPairs, 43 NumberOfFragments, 160 HoareAnnotationTreeSize, 30 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 69 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (0 < (x + 1) % 4294967296 && ((x + 1 == n && y == 1) || ((x + 1 <= n && 0 < (x + 2) % 4294967296) && n == y + x))) || (n == x && y == 0) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-04-15 12:02:10,168 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...