/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/nla-digbench-scaling/geo1-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 12:44:10,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 12:44:10,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 12:44:10,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 12:44:10,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 12:44:10,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 12:44:10,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 12:44:10,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 12:44:10,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 12:44:10,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 12:44:10,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 12:44:10,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 12:44:10,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 12:44:10,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 12:44:10,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 12:44:10,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 12:44:10,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 12:44:10,078 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 12:44:10,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 12:44:10,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 12:44:10,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 12:44:10,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 12:44:10,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 12:44:10,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:44:10,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 12:44:10,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 12:44:10,080 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 12:44:10,080 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 12:44:10,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 12:44:10,080 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 12:44:10,080 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 12:44:10,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 12:44:10,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 12:44:10,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 12:44:10,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 12:44:10,279 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 12:44:10,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c [2022-04-08 12:44:10,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b7e1ed8/d00fb350e8784594b5ed5b431750d66a/FLAG8079b06ed [2022-04-08 12:44:10,676 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 12:44:10,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c [2022-04-08 12:44:10,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b7e1ed8/d00fb350e8784594b5ed5b431750d66a/FLAG8079b06ed [2022-04-08 12:44:10,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b7e1ed8/d00fb350e8784594b5ed5b431750d66a [2022-04-08 12:44:10,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 12:44:10,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 12:44:10,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 12:44:10,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 12:44:10,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 12:44:10,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68780cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10, skipping insertion in model container [2022-04-08 12:44:10,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 12:44:10,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 12:44:10,838 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2022-04-08 12:44:10,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:44:10,869 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 12:44:10,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2022-04-08 12:44:10,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:44:10,902 INFO L208 MainTranslator]: Completed translation [2022-04-08 12:44:10,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10 WrapperNode [2022-04-08 12:44:10,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 12:44:10,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 12:44:10,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 12:44:10,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 12:44:10,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 12:44:10,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 12:44:10,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 12:44:10,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 12:44:10,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10" (1/1) ... [2022-04-08 12:44:10,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:44:10,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:44:10,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-08 12:44:10,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-08 12:44:10,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 12:44:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 12:44:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 12:44:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 12:44:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 12:44:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 12:44:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 12:44:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 12:44:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 12:44:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 12:44:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 12:44:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 12:44:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 12:44:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 12:44:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 12:44:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 12:44:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 12:44:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 12:44:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 12:44:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 12:44:11,038 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 12:44:11,039 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 12:44:11,215 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 12:44:11,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 12:44:11,220 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 12:44:11,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:44:11 BoogieIcfgContainer [2022-04-08 12:44:11,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 12:44:11,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 12:44:11,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 12:44:11,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 12:44:11,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 12:44:10" (1/3) ... [2022-04-08 12:44:11,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f76dc1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:44:11, skipping insertion in model container [2022-04-08 12:44:11,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:44:10" (2/3) ... [2022-04-08 12:44:11,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f76dc1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:44:11, skipping insertion in model container [2022-04-08 12:44:11,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:44:11" (3/3) ... [2022-04-08 12:44:11,233 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound5.c [2022-04-08 12:44:11,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 12:44:11,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 12:44:11,264 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 12:44:11,272 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-08 12:44:11,272 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 12:44:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-08 12:44:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-08 12:44:11,296 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:44:11,297 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:44:11,297 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:44:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:44:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash 774216096, now seen corresponding path program 1 times [2022-04-08 12:44:11,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:11,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1814087020] [2022-04-08 12:44:11,313 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:44:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash 774216096, now seen corresponding path program 2 times [2022-04-08 12:44:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:44:11,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512469719] [2022-04-08 12:44:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:44:11,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:44:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 12:44:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:11,431 INFO L290 TraceCheckUtils]: 0: Hoare triple {56#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {35#true} is VALID [2022-04-08 12:44:11,431 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume true; {35#true} is VALID [2022-04-08 12:44:11,432 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {35#true} {35#true} #68#return; {35#true} is VALID [2022-04-08 12:44:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 12:44:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:11,438 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:44:11,439 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:44:11,439 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:44:11,439 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {35#true} #56#return; {36#false} is VALID [2022-04-08 12:44:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-08 12:44:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:11,445 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:44:11,446 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:44:11,446 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:44:11,446 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #58#return; {36#false} is VALID [2022-04-08 12:44:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-08 12:44:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:11,452 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:44:11,453 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:44:11,453 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:44:11,453 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #60#return; {36#false} is VALID [2022-04-08 12:44:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-08 12:44:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:11,462 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:44:11,463 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:44:11,464 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:44:11,464 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #62#return; {36#false} is VALID [2022-04-08 12:44:11,465 INFO L272 TraceCheckUtils]: 0: Hoare triple {35#true} call ULTIMATE.init(); {56#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 12:44:11,465 INFO L290 TraceCheckUtils]: 1: Hoare triple {56#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {35#true} is VALID [2022-04-08 12:44:11,466 INFO L290 TraceCheckUtils]: 2: Hoare triple {35#true} assume true; {35#true} is VALID [2022-04-08 12:44:11,466 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35#true} {35#true} #68#return; {35#true} is VALID [2022-04-08 12:44:11,466 INFO L272 TraceCheckUtils]: 4: Hoare triple {35#true} call #t~ret6 := main(); {35#true} is VALID [2022-04-08 12:44:11,466 INFO L290 TraceCheckUtils]: 5: Hoare triple {35#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {35#true} is VALID [2022-04-08 12:44:11,466 INFO L272 TraceCheckUtils]: 6: Hoare triple {35#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 5 then 1 else 0)); {35#true} is VALID [2022-04-08 12:44:11,466 INFO L290 TraceCheckUtils]: 7: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:44:11,467 INFO L290 TraceCheckUtils]: 8: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:44:11,467 INFO L290 TraceCheckUtils]: 9: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:44:11,467 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {36#false} {35#true} #56#return; {36#false} is VALID [2022-04-08 12:44:11,467 INFO L290 TraceCheckUtils]: 11: Hoare triple {36#false} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {36#false} is VALID [2022-04-08 12:44:11,468 INFO L272 TraceCheckUtils]: 12: Hoare triple {36#false} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 5 then 1 else 0)); {35#true} is VALID [2022-04-08 12:44:11,468 INFO L290 TraceCheckUtils]: 13: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:44:11,468 INFO L290 TraceCheckUtils]: 14: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:44:11,468 INFO L290 TraceCheckUtils]: 15: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:44:11,468 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {36#false} {36#false} #58#return; {36#false} is VALID [2022-04-08 12:44:11,469 INFO L272 TraceCheckUtils]: 17: Hoare triple {36#false} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {35#true} is VALID [2022-04-08 12:44:11,469 INFO L290 TraceCheckUtils]: 18: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:44:11,470 INFO L290 TraceCheckUtils]: 19: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:44:11,470 INFO L290 TraceCheckUtils]: 20: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:44:11,470 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {36#false} {36#false} #60#return; {36#false} is VALID [2022-04-08 12:44:11,470 INFO L272 TraceCheckUtils]: 22: Hoare triple {36#false} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {35#true} is VALID [2022-04-08 12:44:11,470 INFO L290 TraceCheckUtils]: 23: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:44:11,471 INFO L290 TraceCheckUtils]: 24: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:44:11,471 INFO L290 TraceCheckUtils]: 25: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:44:11,471 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {36#false} {36#false} #62#return; {36#false} is VALID [2022-04-08 12:44:11,471 INFO L290 TraceCheckUtils]: 27: Hoare triple {36#false} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {36#false} is VALID [2022-04-08 12:44:11,472 INFO L290 TraceCheckUtils]: 28: Hoare triple {36#false} assume !false; {36#false} is VALID [2022-04-08 12:44:11,472 INFO L272 TraceCheckUtils]: 29: Hoare triple {36#false} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {36#false} is VALID [2022-04-08 12:44:11,472 INFO L290 TraceCheckUtils]: 30: Hoare triple {36#false} ~cond := #in~cond; {36#false} is VALID [2022-04-08 12:44:11,472 INFO L290 TraceCheckUtils]: 31: Hoare triple {36#false} assume 0 == ~cond; {36#false} is VALID [2022-04-08 12:44:11,472 INFO L290 TraceCheckUtils]: 32: Hoare triple {36#false} assume !false; {36#false} is VALID [2022-04-08 12:44:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:44:11,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:44:11,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512469719] [2022-04-08 12:44:11,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512469719] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:11,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:11,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:44:11,476 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:44:11,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1814087020] [2022-04-08 12:44:11,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1814087020] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:11,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:11,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:44:11,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293437418] [2022-04-08 12:44:11,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:44:11,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-08 12:44:11,482 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:44:11,484 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:44:11,505 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:11,506 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 12:44:11,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:11,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 12:44:11,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:44:11,522 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:44:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:11,681 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2022-04-08 12:44:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 12:44:11,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-08 12:44:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:44:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:44:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2022-04-08 12:44:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:44:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2022-04-08 12:44:11,710 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 78 transitions. [2022-04-08 12:44:11,797 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 78 edges. 78 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:11,805 INFO L225 Difference]: With dead ends: 57 [2022-04-08 12:44:11,805 INFO L226 Difference]: Without dead ends: 27 [2022-04-08 12:44:11,807 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:44:11,810 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:44:11,811 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:44:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-08 12:44:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-08 12:44:11,841 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:44:11,842 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:44:11,842 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:44:11,843 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:44:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:11,847 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-08 12:44:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-08 12:44:11,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:11,847 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:11,849 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 27 states. [2022-04-08 12:44:11,849 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 27 states. [2022-04-08 12:44:11,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:11,853 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-08 12:44:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-08 12:44:11,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:11,854 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:11,854 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:44:11,854 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:44:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:44:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-04-08 12:44:11,858 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2022-04-08 12:44:11,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:44:11,858 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-04-08 12:44:11,859 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:44:11,859 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 31 transitions. [2022-04-08 12:44:11,892 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-08 12:44:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-08 12:44:11,894 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:44:11,894 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:44:11,894 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 12:44:11,894 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:44:11,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:44:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1105237916, now seen corresponding path program 1 times [2022-04-08 12:44:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:11,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [835089531] [2022-04-08 12:44:11,899 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:44:11,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1105237916, now seen corresponding path program 2 times [2022-04-08 12:44:11,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:44:11,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604026044] [2022-04-08 12:44:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:44:11,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:44:11,944 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:44:11,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591395086] [2022-04-08 12:44:11,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:44:11,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:44:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:44:11,948 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) [2022-04-08 12:44:11,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 12:44:12,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 12:44:12,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:44:12,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 12:44:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:12,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:44:12,226 INFO L272 TraceCheckUtils]: 0: Hoare triple {281#true} call ULTIMATE.init(); {281#true} is VALID [2022-04-08 12:44:12,227 INFO L290 TraceCheckUtils]: 1: Hoare triple {281#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {281#true} is VALID [2022-04-08 12:44:12,227 INFO L290 TraceCheckUtils]: 2: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:44:12,227 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {281#true} {281#true} #68#return; {281#true} is VALID [2022-04-08 12:44:12,227 INFO L272 TraceCheckUtils]: 4: Hoare triple {281#true} call #t~ret6 := main(); {281#true} is VALID [2022-04-08 12:44:12,228 INFO L290 TraceCheckUtils]: 5: Hoare triple {281#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {281#true} is VALID [2022-04-08 12:44:12,228 INFO L272 TraceCheckUtils]: 6: Hoare triple {281#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 5 then 1 else 0)); {281#true} is VALID [2022-04-08 12:44:12,228 INFO L290 TraceCheckUtils]: 7: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-08 12:44:12,228 INFO L290 TraceCheckUtils]: 8: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-08 12:44:12,228 INFO L290 TraceCheckUtils]: 9: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:44:12,228 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {281#true} {281#true} #56#return; {281#true} is VALID [2022-04-08 12:44:12,229 INFO L290 TraceCheckUtils]: 11: Hoare triple {281#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {281#true} is VALID [2022-04-08 12:44:12,229 INFO L272 TraceCheckUtils]: 12: Hoare triple {281#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 5 then 1 else 0)); {281#true} is VALID [2022-04-08 12:44:12,229 INFO L290 TraceCheckUtils]: 13: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-08 12:44:12,229 INFO L290 TraceCheckUtils]: 14: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-08 12:44:12,229 INFO L290 TraceCheckUtils]: 15: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:44:12,229 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {281#true} {281#true} #58#return; {281#true} is VALID [2022-04-08 12:44:12,229 INFO L272 TraceCheckUtils]: 17: Hoare triple {281#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {281#true} is VALID [2022-04-08 12:44:12,230 INFO L290 TraceCheckUtils]: 18: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-08 12:44:12,230 INFO L290 TraceCheckUtils]: 19: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-08 12:44:12,230 INFO L290 TraceCheckUtils]: 20: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:44:12,230 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {281#true} {281#true} #60#return; {281#true} is VALID [2022-04-08 12:44:12,230 INFO L272 TraceCheckUtils]: 22: Hoare triple {281#true} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {281#true} is VALID [2022-04-08 12:44:12,230 INFO L290 TraceCheckUtils]: 23: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-08 12:44:12,231 INFO L290 TraceCheckUtils]: 24: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-08 12:44:12,231 INFO L290 TraceCheckUtils]: 25: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:44:12,231 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {281#true} {281#true} #62#return; {281#true} is VALID [2022-04-08 12:44:12,233 INFO L290 TraceCheckUtils]: 27: Hoare triple {281#true} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {367#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} is VALID [2022-04-08 12:44:12,234 INFO L290 TraceCheckUtils]: 28: Hoare triple {367#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} assume !false; {367#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} is VALID [2022-04-08 12:44:12,234 INFO L272 TraceCheckUtils]: 29: Hoare triple {367#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {374#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:44:12,235 INFO L290 TraceCheckUtils]: 30: Hoare triple {374#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {378#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:44:12,235 INFO L290 TraceCheckUtils]: 31: Hoare triple {378#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {282#false} is VALID [2022-04-08 12:44:12,235 INFO L290 TraceCheckUtils]: 32: Hoare triple {282#false} assume !false; {282#false} is VALID [2022-04-08 12:44:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:44:12,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 12:44:12,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:44:12,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604026044] [2022-04-08 12:44:12,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:44:12,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591395086] [2022-04-08 12:44:12,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591395086] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:12,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:12,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:44:12,238 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:44:12,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [835089531] [2022-04-08 12:44:12,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [835089531] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:12,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:12,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:44:12,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489586877] [2022-04-08 12:44:12,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:44:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-04-08 12:44:12,239 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:44:12,239 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:44:12,258 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:12,258 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 12:44:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 12:44:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 12:44:12,259 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:44:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:12,384 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-04-08 12:44:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 12:44:12,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-04-08 12:44:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:44:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:44:12,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2022-04-08 12:44:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:44:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2022-04-08 12:44:12,390 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 42 transitions. [2022-04-08 12:44:12,420 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:12,422 INFO L225 Difference]: With dead ends: 37 [2022-04-08 12:44:12,422 INFO L226 Difference]: Without dead ends: 35 [2022-04-08 12:44:12,423 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-08 12:44:12,425 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:44:12,428 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 99 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:44:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-08 12:44:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-04-08 12:44:12,443 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:44:12,443 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:44:12,444 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:44:12,444 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:44:12,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:12,445 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-04-08 12:44:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-04-08 12:44:12,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:12,446 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:12,446 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Second operand 35 states. [2022-04-08 12:44:12,447 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Second operand 35 states. [2022-04-08 12:44:12,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:12,448 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-04-08 12:44:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-04-08 12:44:12,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:12,455 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:12,455 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:44:12,455 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:44:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:44:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-04-08 12:44:12,457 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2022-04-08 12:44:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:44:12,457 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-04-08 12:44:12,457 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:44:12,457 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 37 transitions. [2022-04-08 12:44:12,500 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-04-08 12:44:12,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-08 12:44:12,501 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:44:12,502 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:44:12,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-08 12:44:12,722 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:44:12,722 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:44:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:44:12,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1493430927, now seen corresponding path program 1 times [2022-04-08 12:44:12,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:12,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [800310728] [2022-04-08 12:44:12,724 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:44:12,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1493430927, now seen corresponding path program 2 times [2022-04-08 12:44:12,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:44:12,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083994625] [2022-04-08 12:44:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:44:12,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:44:12,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:44:12,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903832318] [2022-04-08 12:44:12,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:44:12,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:44:12,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:44:12,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 12:44:12,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 12:44:12,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 12:44:12,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:44:12,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-08 12:44:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:44:12,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:44:17,131 INFO L272 TraceCheckUtils]: 0: Hoare triple {596#true} call ULTIMATE.init(); {596#true} is VALID [2022-04-08 12:44:17,131 INFO L290 TraceCheckUtils]: 1: Hoare triple {596#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {596#true} is VALID [2022-04-08 12:44:17,131 INFO L290 TraceCheckUtils]: 2: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:17,131 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {596#true} {596#true} #68#return; {596#true} is VALID [2022-04-08 12:44:17,131 INFO L272 TraceCheckUtils]: 4: Hoare triple {596#true} call #t~ret6 := main(); {596#true} is VALID [2022-04-08 12:44:17,132 INFO L290 TraceCheckUtils]: 5: Hoare triple {596#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {596#true} is VALID [2022-04-08 12:44:17,132 INFO L272 TraceCheckUtils]: 6: Hoare triple {596#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 5 then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:17,132 INFO L290 TraceCheckUtils]: 7: Hoare triple {596#true} ~cond := #in~cond; {596#true} is VALID [2022-04-08 12:44:17,132 INFO L290 TraceCheckUtils]: 8: Hoare triple {596#true} assume !(0 == ~cond); {596#true} is VALID [2022-04-08 12:44:17,132 INFO L290 TraceCheckUtils]: 9: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:17,132 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {596#true} {596#true} #56#return; {596#true} is VALID [2022-04-08 12:44:17,132 INFO L290 TraceCheckUtils]: 11: Hoare triple {596#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {596#true} is VALID [2022-04-08 12:44:17,132 INFO L272 TraceCheckUtils]: 12: Hoare triple {596#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 5 then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:17,132 INFO L290 TraceCheckUtils]: 13: Hoare triple {596#true} ~cond := #in~cond; {596#true} is VALID [2022-04-08 12:44:17,133 INFO L290 TraceCheckUtils]: 14: Hoare triple {596#true} assume !(0 == ~cond); {596#true} is VALID [2022-04-08 12:44:17,133 INFO L290 TraceCheckUtils]: 15: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:17,133 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {596#true} {596#true} #58#return; {596#true} is VALID [2022-04-08 12:44:17,133 INFO L272 TraceCheckUtils]: 17: Hoare triple {596#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:17,133 INFO L290 TraceCheckUtils]: 18: Hoare triple {596#true} ~cond := #in~cond; {596#true} is VALID [2022-04-08 12:44:17,133 INFO L290 TraceCheckUtils]: 19: Hoare triple {596#true} assume !(0 == ~cond); {596#true} is VALID [2022-04-08 12:44:17,133 INFO L290 TraceCheckUtils]: 20: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:17,133 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {596#true} {596#true} #60#return; {596#true} is VALID [2022-04-08 12:44:17,133 INFO L272 TraceCheckUtils]: 22: Hoare triple {596#true} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:17,134 INFO L290 TraceCheckUtils]: 23: Hoare triple {596#true} ~cond := #in~cond; {596#true} is VALID [2022-04-08 12:44:17,134 INFO L290 TraceCheckUtils]: 24: Hoare triple {596#true} assume !(0 == ~cond); {596#true} is VALID [2022-04-08 12:44:17,134 INFO L290 TraceCheckUtils]: 25: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:17,134 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {596#true} {596#true} #62#return; {596#true} is VALID [2022-04-08 12:44:17,134 INFO L290 TraceCheckUtils]: 27: Hoare triple {596#true} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {596#true} is VALID [2022-04-08 12:44:17,134 INFO L290 TraceCheckUtils]: 28: Hoare triple {596#true} assume !false; {596#true} is VALID [2022-04-08 12:44:17,134 INFO L272 TraceCheckUtils]: 29: Hoare triple {596#true} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:17,135 INFO L290 TraceCheckUtils]: 30: Hoare triple {596#true} ~cond := #in~cond; {691#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:44:17,135 INFO L290 TraceCheckUtils]: 31: Hoare triple {691#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {695#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:44:17,135 INFO L290 TraceCheckUtils]: 32: Hoare triple {695#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {695#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:44:17,136 INFO L284 TraceCheckUtils]: 33: Hoare quadruple {695#(not (= |__VERIFIER_assert_#in~cond| 0))} {596#true} #64#return; {702#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-08 12:44:17,137 INFO L290 TraceCheckUtils]: 34: Hoare triple {702#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} assume !(~c~0 < ~k~0); {702#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-08 12:44:17,141 INFO L290 TraceCheckUtils]: 35: Hoare triple {702#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} ~x~0 := ~x~0 * (~z~0 - 1); {709#(exists ((v_main_~x~0_11 Int) (main_~z~0 Int)) (and (= (+ (* v_main_~x~0_11 main_~z~0) 1) (+ v_main_~x~0_11 main_~y~0)) (= main_~x~0 (* v_main_~x~0_11 (+ (- 1) main_~z~0)))))} is VALID [2022-04-08 12:44:17,142 INFO L272 TraceCheckUtils]: 36: Hoare triple {709#(exists ((v_main_~x~0_11 Int) (main_~z~0 Int)) (and (= (+ (* v_main_~x~0_11 main_~z~0) 1) (+ v_main_~x~0_11 main_~y~0)) (= main_~x~0 (* v_main_~x~0_11 (+ (- 1) main_~z~0)))))} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {713#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:44:17,142 INFO L290 TraceCheckUtils]: 37: Hoare triple {713#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {717#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:44:17,143 INFO L290 TraceCheckUtils]: 38: Hoare triple {717#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {597#false} is VALID [2022-04-08 12:44:17,143 INFO L290 TraceCheckUtils]: 39: Hoare triple {597#false} assume !false; {597#false} is VALID [2022-04-08 12:44:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:44:17,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 12:44:20,762 INFO L290 TraceCheckUtils]: 39: Hoare triple {597#false} assume !false; {597#false} is VALID [2022-04-08 12:44:20,771 INFO L290 TraceCheckUtils]: 38: Hoare triple {717#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {597#false} is VALID [2022-04-08 12:44:20,772 INFO L290 TraceCheckUtils]: 37: Hoare triple {713#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {717#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:44:20,773 INFO L272 TraceCheckUtils]: 36: Hoare triple {733#(= (+ main_~x~0 1) main_~y~0)} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {713#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:44:20,773 INFO L290 TraceCheckUtils]: 35: Hoare triple {702#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} ~x~0 := ~x~0 * (~z~0 - 1); {733#(= (+ main_~x~0 1) main_~y~0)} is VALID [2022-04-08 12:44:20,774 INFO L290 TraceCheckUtils]: 34: Hoare triple {702#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} assume !(~c~0 < ~k~0); {702#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-08 12:44:20,774 INFO L284 TraceCheckUtils]: 33: Hoare quadruple {695#(not (= |__VERIFIER_assert_#in~cond| 0))} {596#true} #64#return; {702#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-08 12:44:20,775 INFO L290 TraceCheckUtils]: 32: Hoare triple {695#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {695#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:44:20,775 INFO L290 TraceCheckUtils]: 31: Hoare triple {752#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {695#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:44:20,776 INFO L290 TraceCheckUtils]: 30: Hoare triple {596#true} ~cond := #in~cond; {752#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 12:44:20,776 INFO L272 TraceCheckUtils]: 29: Hoare triple {596#true} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:20,776 INFO L290 TraceCheckUtils]: 28: Hoare triple {596#true} assume !false; {596#true} is VALID [2022-04-08 12:44:20,776 INFO L290 TraceCheckUtils]: 27: Hoare triple {596#true} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {596#true} is VALID [2022-04-08 12:44:20,776 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {596#true} {596#true} #62#return; {596#true} is VALID [2022-04-08 12:44:20,776 INFO L290 TraceCheckUtils]: 25: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:20,776 INFO L290 TraceCheckUtils]: 24: Hoare triple {596#true} assume !(0 == ~cond); {596#true} is VALID [2022-04-08 12:44:20,776 INFO L290 TraceCheckUtils]: 23: Hoare triple {596#true} ~cond := #in~cond; {596#true} is VALID [2022-04-08 12:44:20,776 INFO L272 TraceCheckUtils]: 22: Hoare triple {596#true} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:20,777 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {596#true} {596#true} #60#return; {596#true} is VALID [2022-04-08 12:44:20,777 INFO L290 TraceCheckUtils]: 20: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:20,777 INFO L290 TraceCheckUtils]: 19: Hoare triple {596#true} assume !(0 == ~cond); {596#true} is VALID [2022-04-08 12:44:20,777 INFO L290 TraceCheckUtils]: 18: Hoare triple {596#true} ~cond := #in~cond; {596#true} is VALID [2022-04-08 12:44:20,777 INFO L272 TraceCheckUtils]: 17: Hoare triple {596#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:20,777 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {596#true} {596#true} #58#return; {596#true} is VALID [2022-04-08 12:44:20,777 INFO L290 TraceCheckUtils]: 15: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:20,777 INFO L290 TraceCheckUtils]: 14: Hoare triple {596#true} assume !(0 == ~cond); {596#true} is VALID [2022-04-08 12:44:20,777 INFO L290 TraceCheckUtils]: 13: Hoare triple {596#true} ~cond := #in~cond; {596#true} is VALID [2022-04-08 12:44:20,778 INFO L272 TraceCheckUtils]: 12: Hoare triple {596#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 5 then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:20,778 INFO L290 TraceCheckUtils]: 11: Hoare triple {596#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {596#true} is VALID [2022-04-08 12:44:20,778 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {596#true} {596#true} #56#return; {596#true} is VALID [2022-04-08 12:44:20,778 INFO L290 TraceCheckUtils]: 9: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:20,778 INFO L290 TraceCheckUtils]: 8: Hoare triple {596#true} assume !(0 == ~cond); {596#true} is VALID [2022-04-08 12:44:20,778 INFO L290 TraceCheckUtils]: 7: Hoare triple {596#true} ~cond := #in~cond; {596#true} is VALID [2022-04-08 12:44:20,778 INFO L272 TraceCheckUtils]: 6: Hoare triple {596#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 5 then 1 else 0)); {596#true} is VALID [2022-04-08 12:44:20,778 INFO L290 TraceCheckUtils]: 5: Hoare triple {596#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4; {596#true} is VALID [2022-04-08 12:44:20,779 INFO L272 TraceCheckUtils]: 4: Hoare triple {596#true} call #t~ret6 := main(); {596#true} is VALID [2022-04-08 12:44:20,779 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {596#true} {596#true} #68#return; {596#true} is VALID [2022-04-08 12:44:20,779 INFO L290 TraceCheckUtils]: 2: Hoare triple {596#true} assume true; {596#true} is VALID [2022-04-08 12:44:20,779 INFO L290 TraceCheckUtils]: 1: Hoare triple {596#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {596#true} is VALID [2022-04-08 12:44:20,779 INFO L272 TraceCheckUtils]: 0: Hoare triple {596#true} call ULTIMATE.init(); {596#true} is VALID [2022-04-08 12:44:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:44:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:44:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083994625] [2022-04-08 12:44:20,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:44:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903832318] [2022-04-08 12:44:20,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903832318] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 12:44:20,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 12:44:20,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-08 12:44:20,780 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:44:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [800310728] [2022-04-08 12:44:20,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [800310728] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:44:20,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:44:20,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 12:44:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930031372] [2022-04-08 12:44:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:44:20,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2022-04-08 12:44:20,781 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:44:20,781 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:44:20,813 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:20,813 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 12:44:20,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:44:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 12:44:20,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-08 12:44:20,814 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:44:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:21,012 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-04-08 12:44:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 12:44:21,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2022-04-08 12:44:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:44:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:44:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 31 transitions. [2022-04-08 12:44:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:44:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 31 transitions. [2022-04-08 12:44:21,015 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 31 transitions. [2022-04-08 12:44:21,067 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:21,068 INFO L225 Difference]: With dead ends: 33 [2022-04-08 12:44:21,068 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 12:44:21,068 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-08 12:44:21,069 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:44:21,069 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 123 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-04-08 12:44:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 12:44:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 12:44:21,070 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:44:21,070 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) [2022-04-08 12:44:21,070 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) [2022-04-08 12:44:21,070 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) [2022-04-08 12:44:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:21,070 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:44:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:44:21,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:21,070 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:21,070 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. [2022-04-08 12:44:21,071 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. [2022-04-08 12:44:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:44:21,071 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:44:21,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:44:21,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:21,071 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:44:21,071 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:44:21,071 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:44:21,071 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) [2022-04-08 12:44:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 12:44:21,071 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-04-08 12:44:21,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:44:21,071 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 12:44:21,072 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:44:21,072 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 12:44:21,072 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:44:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:44:21,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:44:21,074 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 12:44:21,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-08 12:44:21,274 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-08 12:44:21,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 12:44:21,393 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2022-04-08 12:44:21,393 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 9) no Hoare annotation was computed. [2022-04-08 12:44:21,393 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2022-04-08 12:44:21,393 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2022-04-08 12:44:21,393 INFO L885 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: true [2022-04-08 12:44:21,394 INFO L885 garLoopResultBuilder]: At program point L13-2(lines 12 14) the Hoare annotation is: true [2022-04-08 12:44:21,394 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 12 14) the Hoare annotation is: true [2022-04-08 12:44:21,394 INFO L885 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-04-08 12:44:21,394 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 52) the Hoare annotation is: true [2022-04-08 12:44:21,395 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (exists ((v_main_~x~0_11 Int) (main_~z~0 Int)) (and (= (+ (* v_main_~x~0_11 main_~z~0) 1) (+ v_main_~x~0_11 main_~y~0)) (= main_~x~0 (* v_main_~x~0_11 (+ (- 1) main_~z~0))))) [2022-04-08 12:44:21,395 INFO L885 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: true [2022-04-08 12:44:21,395 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 52) the Hoare annotation is: true [2022-04-08 12:44:21,395 INFO L878 garLoopResultBuilder]: At program point L36-2(lines 36 46) the Hoare annotation is: (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) [2022-04-08 12:44:21,395 INFO L878 garLoopResultBuilder]: At program point L36-3(lines 36 46) the Hoare annotation is: (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) [2022-04-08 12:44:21,395 INFO L885 garLoopResultBuilder]: At program point L30(line 30) the Hoare annotation is: true [2022-04-08 12:44:21,395 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 52) the Hoare annotation is: true [2022-04-08 12:44:21,395 INFO L885 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: true [2022-04-08 12:44:21,396 INFO L885 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: true [2022-04-08 12:44:21,396 INFO L885 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-04-08 12:44:21,396 INFO L885 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: true [2022-04-08 12:44:21,396 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) [2022-04-08 12:44:21,396 INFO L878 garLoopResultBuilder]: At program point L37-1(lines 36 46) the Hoare annotation is: (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) [2022-04-08 12:44:21,396 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:44:21,396 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|)) [2022-04-08 12:44:21,396 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:44:21,397 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:44:21,397 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 12:44:21,397 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 12:44:21,397 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:44:21,397 INFO L878 garLoopResultBuilder]: At program point L17(lines 17 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:44:21,397 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-08 12:44:21,397 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2022-04-08 12:44:21,397 INFO L878 garLoopResultBuilder]: At program point L16-2(lines 15 21) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-08 12:44:21,398 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 15 21) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-08 12:44:21,398 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:44:21,402 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-04-08 12:44:21,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 12:44:21,405 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 12:44:21,406 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 12:44:21,436 INFO L163 areAnnotationChecker]: CFG has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 12:44:21,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 12:44:21 BoogieIcfgContainer [2022-04-08 12:44:21,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 12:44:21,444 INFO L158 Benchmark]: Toolchain (without parser) took 10754.58ms. Allocated memory was 215.0MB in the beginning and 264.2MB in the end (delta: 49.3MB). Free memory was 165.0MB in the beginning and 113.7MB in the end (delta: 51.3MB). Peak memory consumption was 101.0MB. Max. memory is 8.0GB. [2022-04-08 12:44:21,445 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory was 181.8MB in the beginning and 181.6MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 12:44:21,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.59ms. Allocated memory is still 215.0MB. Free memory was 164.8MB in the beginning and 191.5MB in the end (delta: -26.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 12:44:21,445 INFO L158 Benchmark]: Boogie Preprocessor took 20.25ms. Allocated memory is still 215.0MB. Free memory was 191.5MB in the beginning and 190.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 12:44:21,445 INFO L158 Benchmark]: RCFGBuilder took 296.71ms. Allocated memory is still 215.0MB. Free memory was 190.0MB in the beginning and 178.4MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 12:44:21,446 INFO L158 Benchmark]: TraceAbstraction took 10221.67ms. Allocated memory was 215.0MB in the beginning and 264.2MB in the end (delta: 49.3MB). Free memory was 178.3MB in the beginning and 113.7MB in the end (delta: 64.6MB). Peak memory consumption was 114.9MB. Max. memory is 8.0GB. [2022-04-08 12:44:21,447 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 0.11ms. Allocated memory is still 215.0MB. Free memory was 181.8MB in the beginning and 181.6MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.59ms. Allocated memory is still 215.0MB. Free memory was 164.8MB in the beginning and 191.5MB in the end (delta: -26.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.25ms. Allocated memory is still 215.0MB. Free memory was 191.5MB in the beginning and 190.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 296.71ms. Allocated memory is still 215.0MB. Free memory was 190.0MB in the beginning and 178.4MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 10221.67ms. Allocated memory was 215.0MB in the beginning and 264.2MB in the end (delta: 49.3MB). Free memory was 178.3MB in the beginning and 113.7MB in the end (delta: 64.6MB). Peak memory consumption was 114.9MB. 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: 18]: 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 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 12 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 81 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 32 LocationsWithAnnotation, 80 PreInvPairs, 113 NumberOfFragments, 114 HoareAnnotationTreeSize, 80 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 32 FomulaSimplificationsInter, 94 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: 36]: Loop Invariant Derived loop invariant: z * x + 1 == y + x - ProcedureContractResult [Line: 12]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: 1 - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-08 12:44:21,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...