/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 06:06:16,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 06:06:16,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 06:06:16,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 06:06:16,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 06:06:16,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 06:06:16,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 06:06:16,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 06:06:16,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 06:06:16,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 06:06:16,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 06:06:16,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 06:06:16,200 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 06:06:16,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 06:06:16,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 06:06:16,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 06:06:16,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 06:06:16,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 06:06:16,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 06:06:16,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 06:06:16,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 06:06:16,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 06:06:16,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 06:06:16,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 06:06:16,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 06:06:16,242 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 06:06:16,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 06:06:16,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 06:06:16,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 06:06:16,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 06:06:16,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 06:06:16,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 06:06:16,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 06:06:16,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 06:06:16,243 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 06:06:16,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 06:06:16,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 06:06:16,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 06:06:16,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 06:06:16,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 06:06:16,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 06:06:16,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 06:06:16,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 06:06:16,245 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 06:06:16,245 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 06:06:16,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 06:06:16,245 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 06:06:16,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 06:06:16,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 06:06:16,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 06:06:16,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 06:06:16,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 06:06:16,493 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 06:06:16,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound100.c [2022-04-28 06:06:16,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce680c311/842b0ca03c364ec5ab6caa7b5d71625b/FLAG9b0063483 [2022-04-28 06:06:16,904 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 06:06:16,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound100.c [2022-04-28 06:06:16,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce680c311/842b0ca03c364ec5ab6caa7b5d71625b/FLAG9b0063483 [2022-04-28 06:06:17,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce680c311/842b0ca03c364ec5ab6caa7b5d71625b [2022-04-28 06:06:17,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 06:06:17,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 06:06:17,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 06:06:17,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 06:06:17,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 06:06:17,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5f50de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17, skipping insertion in model container [2022-04-28 06:06:17,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 06:06:17,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 06:06:17,494 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_unwindbound100.c[546,559] [2022-04-28 06:06:17,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 06:06:17,527 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 06:06:17,536 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_unwindbound100.c[546,559] [2022-04-28 06:06:17,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 06:06:17,550 INFO L208 MainTranslator]: Completed translation [2022-04-28 06:06:17,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17 WrapperNode [2022-04-28 06:06:17,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 06:06:17,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 06:06:17,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 06:06:17,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 06:06:17,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 06:06:17,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 06:06:17,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 06:06:17,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 06:06:17,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17" (1/1) ... [2022-04-28 06:06:17,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 06:06:17,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:17,610 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) [2022-04-28 06:06:17,612 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 [2022-04-28 06:06:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 06:06:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 06:06:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 06:06:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 06:06:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 06:06:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 06:06:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 06:06:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 06:06:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 06:06:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 06:06:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 06:06:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 06:06:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 06:06:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 06:06:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 06:06:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 06:06:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 06:06:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 06:06:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 06:06:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 06:06:17,695 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 06:06:17,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 06:06:17,808 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 06:06:17,824 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 06:06:17,825 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 06:06:17,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 06:06:17 BoogieIcfgContainer [2022-04-28 06:06:17,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 06:06:17,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 06:06:17,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 06:06:17,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 06:06:17,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 06:06:17" (1/3) ... [2022-04-28 06:06:17,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473aadd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 06:06:17, skipping insertion in model container [2022-04-28 06:06:17,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:17" (2/3) ... [2022-04-28 06:06:17,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473aadd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 06:06:17, skipping insertion in model container [2022-04-28 06:06:17,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 06:06:17" (3/3) ... [2022-04-28 06:06:17,841 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound100.c [2022-04-28 06:06:17,864 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 06:06:17,864 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 06:06:17,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 06:06:17,944 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1681a265, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a3cfdd9 [2022-04-28 06:06:17,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 06:06:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 06:06:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 06:06:17,971 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:17,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:17,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash 730417173, now seen corresponding path program 1 times [2022-04-28 06:06:17,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:17,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1386191137] [2022-04-28 06:06:18,006 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash 730417173, now seen corresponding path program 2 times [2022-04-28 06:06:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:18,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772921445] [2022-04-28 06:06:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:18,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 06:06:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:18,228 INFO L290 TraceCheckUtils]: 0: Hoare triple {46#(and (= ~counter~0 |old(~counter~0)|) (= |#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);~counter~0 := 0; {33#true} is VALID [2022-04-28 06:06:18,228 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-28 06:06:18,229 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #62#return; {33#true} is VALID [2022-04-28 06:06:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 06:06:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:18,235 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 06:06:18,236 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 06:06:18,236 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 06:06:18,237 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {33#true} #54#return; {34#false} is VALID [2022-04-28 06:06:18,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-28 06:06:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:18,245 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 06:06:18,246 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 06:06:18,246 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 06:06:18,246 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {34#false} #56#return; {34#false} is VALID [2022-04-28 06:06:18,247 INFO L272 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {46#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 06:06:18,247 INFO L290 TraceCheckUtils]: 1: Hoare triple {46#(and (= ~counter~0 |old(~counter~0)|) (= |#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);~counter~0 := 0; {33#true} is VALID [2022-04-28 06:06:18,248 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-28 06:06:18,248 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} #62#return; {33#true} is VALID [2022-04-28 06:06:18,248 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} call #t~ret7 := main(); {33#true} is VALID [2022-04-28 06:06:18,248 INFO L290 TraceCheckUtils]: 5: Hoare triple {33#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;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {33#true} is VALID [2022-04-28 06:06:18,248 INFO L272 TraceCheckUtils]: 6: Hoare triple {33#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {33#true} is VALID [2022-04-28 06:06:18,249 INFO L290 TraceCheckUtils]: 7: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 06:06:18,249 INFO L290 TraceCheckUtils]: 8: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 06:06:18,249 INFO L290 TraceCheckUtils]: 9: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 06:06:18,249 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {34#false} {33#true} #54#return; {34#false} is VALID [2022-04-28 06:06:18,250 INFO L272 TraceCheckUtils]: 11: Hoare triple {34#false} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {33#true} is VALID [2022-04-28 06:06:18,250 INFO L290 TraceCheckUtils]: 12: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 06:06:18,250 INFO L290 TraceCheckUtils]: 13: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 06:06:18,251 INFO L290 TraceCheckUtils]: 14: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 06:06:18,251 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {34#false} {34#false} #56#return; {34#false} is VALID [2022-04-28 06:06:18,251 INFO L290 TraceCheckUtils]: 16: Hoare triple {34#false} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {34#false} is VALID [2022-04-28 06:06:18,251 INFO L290 TraceCheckUtils]: 17: Hoare triple {34#false} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {34#false} is VALID [2022-04-28 06:06:18,251 INFO L290 TraceCheckUtils]: 18: Hoare triple {34#false} assume !!(#t~post6 < 100);havoc #t~post6; {34#false} is VALID [2022-04-28 06:06:18,252 INFO L272 TraceCheckUtils]: 19: Hoare triple {34#false} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {34#false} is VALID [2022-04-28 06:06:18,252 INFO L290 TraceCheckUtils]: 20: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2022-04-28 06:06:18,252 INFO L290 TraceCheckUtils]: 21: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2022-04-28 06:06:18,252 INFO L290 TraceCheckUtils]: 22: Hoare triple {34#false} assume !false; {34#false} is VALID [2022-04-28 06:06:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 06:06:18,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 06:06:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772921445] [2022-04-28 06:06:18,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772921445] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:18,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:18,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 06:06:18,256 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 06:06:18,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1386191137] [2022-04-28 06:06:18,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1386191137] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:18,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:18,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 06:06:18,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940844855] [2022-04-28 06:06:18,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 06:06:18,262 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-28 06:06:18,263 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 06:06:18,266 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:18,294 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:18,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 06:06:18,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:18,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 06:06:18,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 06:06:18,320 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:18,481 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2022-04-28 06:06:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 06:06:18,481 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-28 06:06:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 06:06:18,482 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2022-04-28 06:06:18,489 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2022-04-28 06:06:18,495 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 70 transitions. [2022-04-28 06:06:18,591 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 70 edges. 70 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:18,602 INFO L225 Difference]: With dead ends: 54 [2022-04-28 06:06:18,602 INFO L226 Difference]: Without dead ends: 26 [2022-04-28 06:06:18,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 06:06:18,609 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 06:06:18,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 06:06:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-28 06:06:18,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-04-28 06:06:18,634 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 06:06:18,635 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 06:06:18,635 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 06:06:18,636 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 06:06:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:18,639 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-28 06:06:18,639 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-28 06:06:18,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:18,640 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:18,640 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-28 06:06:18,641 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-28 06:06:18,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:18,644 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-28 06:06:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-28 06:06:18,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:18,645 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:18,645 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 06:06:18,645 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 06:06:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 06:06:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-04-28 06:06:18,648 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 23 [2022-04-28 06:06:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 06:06:18,649 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-04-28 06:06:18,649 INFO L496 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:18,649 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 28 transitions. [2022-04-28 06:06:18,678 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:18,678 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-28 06:06:18,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 06:06:18,679 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:18,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:18,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 06:06:18,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:18,682 INFO L85 PathProgramCache]: Analyzing trace with hash -942473515, now seen corresponding path program 1 times [2022-04-28 06:06:18,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:18,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [554742322] [2022-04-28 06:06:18,684 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash -942473515, now seen corresponding path program 2 times [2022-04-28 06:06:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:18,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399356207] [2022-04-28 06:06:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:18,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:18,723 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 06:06:18,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005400537] [2022-04-28 06:06:18,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 06:06:18,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:18,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:18,728 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) [2022-04-28 06:06:18,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 06:06:18,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 06:06:18,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 06:06:18,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 06:06:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:18,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 06:06:18,999 INFO L272 TraceCheckUtils]: 0: Hoare triple {259#true} call ULTIMATE.init(); {259#true} is VALID [2022-04-28 06:06:18,999 INFO L290 TraceCheckUtils]: 1: Hoare triple {259#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);~counter~0 := 0; {259#true} is VALID [2022-04-28 06:06:18,999 INFO L290 TraceCheckUtils]: 2: Hoare triple {259#true} assume true; {259#true} is VALID [2022-04-28 06:06:19,000 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {259#true} {259#true} #62#return; {259#true} is VALID [2022-04-28 06:06:19,000 INFO L272 TraceCheckUtils]: 4: Hoare triple {259#true} call #t~ret7 := main(); {259#true} is VALID [2022-04-28 06:06:19,000 INFO L290 TraceCheckUtils]: 5: Hoare triple {259#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;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {259#true} is VALID [2022-04-28 06:06:19,000 INFO L272 TraceCheckUtils]: 6: Hoare triple {259#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {259#true} is VALID [2022-04-28 06:06:19,000 INFO L290 TraceCheckUtils]: 7: Hoare triple {259#true} ~cond := #in~cond; {259#true} is VALID [2022-04-28 06:06:19,001 INFO L290 TraceCheckUtils]: 8: Hoare triple {259#true} assume !(0 == ~cond); {259#true} is VALID [2022-04-28 06:06:19,001 INFO L290 TraceCheckUtils]: 9: Hoare triple {259#true} assume true; {259#true} is VALID [2022-04-28 06:06:19,001 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {259#true} {259#true} #54#return; {259#true} is VALID [2022-04-28 06:06:19,001 INFO L272 TraceCheckUtils]: 11: Hoare triple {259#true} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {259#true} is VALID [2022-04-28 06:06:19,002 INFO L290 TraceCheckUtils]: 12: Hoare triple {259#true} ~cond := #in~cond; {259#true} is VALID [2022-04-28 06:06:19,002 INFO L290 TraceCheckUtils]: 13: Hoare triple {259#true} assume !(0 == ~cond); {259#true} is VALID [2022-04-28 06:06:19,002 INFO L290 TraceCheckUtils]: 14: Hoare triple {259#true} assume true; {259#true} is VALID [2022-04-28 06:06:19,002 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {259#true} {259#true} #56#return; {259#true} is VALID [2022-04-28 06:06:19,007 INFO L290 TraceCheckUtils]: 16: Hoare triple {259#true} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {312#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} is VALID [2022-04-28 06:06:19,007 INFO L290 TraceCheckUtils]: 17: Hoare triple {312#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {312#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} is VALID [2022-04-28 06:06:19,008 INFO L290 TraceCheckUtils]: 18: Hoare triple {312#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} assume !!(#t~post6 < 100);havoc #t~post6; {312#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} is VALID [2022-04-28 06:06:19,009 INFO L272 TraceCheckUtils]: 19: Hoare triple {312#(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)); {322#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 06:06:19,010 INFO L290 TraceCheckUtils]: 20: Hoare triple {322#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {326#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 06:06:19,011 INFO L290 TraceCheckUtils]: 21: Hoare triple {326#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {260#false} is VALID [2022-04-28 06:06:19,011 INFO L290 TraceCheckUtils]: 22: Hoare triple {260#false} assume !false; {260#false} is VALID [2022-04-28 06:06:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 06:06:19,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 06:06:19,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 06:06:19,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399356207] [2022-04-28 06:06:19,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 06:06:19,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005400537] [2022-04-28 06:06:19,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005400537] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:19,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:19,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 06:06:19,016 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 06:06:19,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [554742322] [2022-04-28 06:06:19,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [554742322] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:19,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:19,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 06:06:19,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656980895] [2022-04-28 06:06:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 06:06:19,019 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-28 06:06:19,019 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 06:06:19,020 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:19,042 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:19,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 06:06:19,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:19,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 06:06:19,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 06:06:19,045 INFO L87 Difference]: Start difference. First operand 25 states and 28 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:19,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:19,168 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-28 06:06:19,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 06:06:19,168 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-28 06:06:19,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 06:06:19,169 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-28 06:06:19,172 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-28 06:06:19,174 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 41 transitions. [2022-04-28 06:06:19,211 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:19,215 INFO L225 Difference]: With dead ends: 36 [2022-04-28 06:06:19,215 INFO L226 Difference]: Without dead ends: 34 [2022-04-28 06:06:19,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 06:06:19,217 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 06:06:19,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 06:06:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-28 06:06:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-04-28 06:06:19,238 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 06:06:19,238 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 06:06:19,239 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 06:06:19,239 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 06:06:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:19,242 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-04-28 06:06:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-04-28 06:06:19,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:19,243 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:19,243 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 34 states. [2022-04-28 06:06:19,243 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 34 states. [2022-04-28 06:06:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:19,249 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-04-28 06:06:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-04-28 06:06:19,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:19,249 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:19,249 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 06:06:19,250 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 06:06:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 06:06:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-04-28 06:06:19,254 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-04-28 06:06:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 06:06:19,255 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-04-28 06:06:19,255 INFO L496 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:19,255 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 36 transitions. [2022-04-28 06:06:19,294 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:19,294 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-04-28 06:06:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-28 06:06:19,297 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:19,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:19,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-28 06:06:19,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:19,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:19,516 INFO L85 PathProgramCache]: Analyzing trace with hash 769172850, now seen corresponding path program 1 times [2022-04-28 06:06:19,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:19,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [610301278] [2022-04-28 06:06:19,517 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash 769172850, now seen corresponding path program 2 times [2022-04-28 06:06:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:19,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560897928] [2022-04-28 06:06:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:19,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:19,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 06:06:19,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915992227] [2022-04-28 06:06:19,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 06:06:19,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:19,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:19,542 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) [2022-04-28 06:06:19,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 06:06:19,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 06:06:19,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 06:06:19,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-28 06:06:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:19,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 06:06:19,765 INFO L272 TraceCheckUtils]: 0: Hoare triple {538#true} call ULTIMATE.init(); {538#true} is VALID [2022-04-28 06:06:19,768 INFO L290 TraceCheckUtils]: 1: Hoare triple {538#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);~counter~0 := 0; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,769 INFO L290 TraceCheckUtils]: 2: Hoare triple {546#(<= ~counter~0 0)} assume true; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,769 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {546#(<= ~counter~0 0)} {538#true} #62#return; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,770 INFO L272 TraceCheckUtils]: 4: Hoare triple {546#(<= ~counter~0 0)} call #t~ret7 := main(); {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,770 INFO L290 TraceCheckUtils]: 5: Hoare triple {546#(<= ~counter~0 0)} 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;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,772 INFO L272 TraceCheckUtils]: 6: Hoare triple {546#(<= ~counter~0 0)} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,772 INFO L290 TraceCheckUtils]: 7: Hoare triple {546#(<= ~counter~0 0)} ~cond := #in~cond; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,773 INFO L290 TraceCheckUtils]: 8: Hoare triple {546#(<= ~counter~0 0)} assume !(0 == ~cond); {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,773 INFO L290 TraceCheckUtils]: 9: Hoare triple {546#(<= ~counter~0 0)} assume true; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,774 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {546#(<= ~counter~0 0)} {546#(<= ~counter~0 0)} #54#return; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,775 INFO L272 TraceCheckUtils]: 11: Hoare triple {546#(<= ~counter~0 0)} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,775 INFO L290 TraceCheckUtils]: 12: Hoare triple {546#(<= ~counter~0 0)} ~cond := #in~cond; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,776 INFO L290 TraceCheckUtils]: 13: Hoare triple {546#(<= ~counter~0 0)} assume !(0 == ~cond); {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,776 INFO L290 TraceCheckUtils]: 14: Hoare triple {546#(<= ~counter~0 0)} assume true; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,777 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {546#(<= ~counter~0 0)} {546#(<= ~counter~0 0)} #56#return; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,777 INFO L290 TraceCheckUtils]: 16: Hoare triple {546#(<= ~counter~0 0)} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {546#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:19,778 INFO L290 TraceCheckUtils]: 17: Hoare triple {546#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {595#(<= |main_#t~post6| 0)} is VALID [2022-04-28 06:06:19,779 INFO L290 TraceCheckUtils]: 18: Hoare triple {595#(<= |main_#t~post6| 0)} assume !(#t~post6 < 100);havoc #t~post6; {539#false} is VALID [2022-04-28 06:06:19,779 INFO L290 TraceCheckUtils]: 19: Hoare triple {539#false} ~x~0 := ~x~0 * (~z~0 - 1); {539#false} is VALID [2022-04-28 06:06:19,779 INFO L272 TraceCheckUtils]: 20: Hoare triple {539#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {539#false} is VALID [2022-04-28 06:06:19,779 INFO L290 TraceCheckUtils]: 21: Hoare triple {539#false} ~cond := #in~cond; {539#false} is VALID [2022-04-28 06:06:19,780 INFO L290 TraceCheckUtils]: 22: Hoare triple {539#false} assume 0 == ~cond; {539#false} is VALID [2022-04-28 06:06:19,780 INFO L290 TraceCheckUtils]: 23: Hoare triple {539#false} assume !false; {539#false} is VALID [2022-04-28 06:06:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 06:06:19,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 06:06:19,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 06:06:19,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560897928] [2022-04-28 06:06:19,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 06:06:19,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915992227] [2022-04-28 06:06:19,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915992227] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:19,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:19,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 06:06:19,782 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 06:06:19,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [610301278] [2022-04-28 06:06:19,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [610301278] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:19,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:19,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 06:06:19,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549004108] [2022-04-28 06:06:19,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 06:06:19,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-28 06:06:19,783 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 06:06:19,784 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:19,802 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:19,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 06:06:19,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:19,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 06:06:19,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 06:06:19,804 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:19,877 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-04-28 06:06:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 06:06:19,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-28 06:06:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 06:06:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-28 06:06:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-28 06:06:19,887 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 38 transitions. [2022-04-28 06:06:19,916 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:19,917 INFO L225 Difference]: With dead ends: 40 [2022-04-28 06:06:19,918 INFO L226 Difference]: Without dead ends: 32 [2022-04-28 06:06:19,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 06:06:19,919 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 06:06:19,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 06:06:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-28 06:06:19,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-28 06:06:19,934 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 06:06:19,934 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 06:06:19,935 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 06:06:19,935 INFO L87 Difference]: Start difference. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 06:06:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:19,937 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-28 06:06:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-28 06:06:19,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:19,938 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:19,938 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 32 states. [2022-04-28 06:06:19,938 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 32 states. [2022-04-28 06:06:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:19,940 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-28 06:06:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-28 06:06:19,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:19,941 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:19,941 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 06:06:19,941 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 06:06:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 06:06:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-04-28 06:06:19,945 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2022-04-28 06:06:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 06:06:19,946 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-04-28 06:06:19,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:19,946 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 35 transitions. [2022-04-28 06:06:19,982 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-28 06:06:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-28 06:06:19,983 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:19,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:20,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 06:06:20,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-28 06:06:20,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash 431121724, now seen corresponding path program 1 times [2022-04-28 06:06:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:20,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [832745365] [2022-04-28 06:06:20,192 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash 431121724, now seen corresponding path program 2 times [2022-04-28 06:06:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:20,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058460856] [2022-04-28 06:06:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:20,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 06:06:20,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794419123] [2022-04-28 06:06:20,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 06:06:20,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:20,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:20,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 06:06:20,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 06:06:20,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 06:06:20,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 06:06:20,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-28 06:06:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:20,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 06:06:23,518 INFO L272 TraceCheckUtils]: 0: Hoare triple {821#true} call ULTIMATE.init(); {821#true} is VALID [2022-04-28 06:06:23,518 INFO L290 TraceCheckUtils]: 1: Hoare triple {821#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);~counter~0 := 0; {821#true} is VALID [2022-04-28 06:06:23,519 INFO L290 TraceCheckUtils]: 2: Hoare triple {821#true} assume true; {821#true} is VALID [2022-04-28 06:06:23,519 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {821#true} {821#true} #62#return; {821#true} is VALID [2022-04-28 06:06:23,519 INFO L272 TraceCheckUtils]: 4: Hoare triple {821#true} call #t~ret7 := main(); {821#true} is VALID [2022-04-28 06:06:23,519 INFO L290 TraceCheckUtils]: 5: Hoare triple {821#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;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {821#true} is VALID [2022-04-28 06:06:23,519 INFO L272 TraceCheckUtils]: 6: Hoare triple {821#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {821#true} is VALID [2022-04-28 06:06:23,520 INFO L290 TraceCheckUtils]: 7: Hoare triple {821#true} ~cond := #in~cond; {821#true} is VALID [2022-04-28 06:06:23,520 INFO L290 TraceCheckUtils]: 8: Hoare triple {821#true} assume !(0 == ~cond); {821#true} is VALID [2022-04-28 06:06:23,520 INFO L290 TraceCheckUtils]: 9: Hoare triple {821#true} assume true; {821#true} is VALID [2022-04-28 06:06:23,520 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {821#true} {821#true} #54#return; {821#true} is VALID [2022-04-28 06:06:23,520 INFO L272 TraceCheckUtils]: 11: Hoare triple {821#true} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {821#true} is VALID [2022-04-28 06:06:23,520 INFO L290 TraceCheckUtils]: 12: Hoare triple {821#true} ~cond := #in~cond; {821#true} is VALID [2022-04-28 06:06:23,521 INFO L290 TraceCheckUtils]: 13: Hoare triple {821#true} assume !(0 == ~cond); {821#true} is VALID [2022-04-28 06:06:23,521 INFO L290 TraceCheckUtils]: 14: Hoare triple {821#true} assume true; {821#true} is VALID [2022-04-28 06:06:23,521 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {821#true} {821#true} #56#return; {821#true} is VALID [2022-04-28 06:06:23,521 INFO L290 TraceCheckUtils]: 16: Hoare triple {821#true} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {821#true} is VALID [2022-04-28 06:06:23,521 INFO L290 TraceCheckUtils]: 17: Hoare triple {821#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {821#true} is VALID [2022-04-28 06:06:23,521 INFO L290 TraceCheckUtils]: 18: Hoare triple {821#true} assume !!(#t~post6 < 100);havoc #t~post6; {821#true} is VALID [2022-04-28 06:06:23,522 INFO L272 TraceCheckUtils]: 19: Hoare triple {821#true} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {821#true} is VALID [2022-04-28 06:06:23,522 INFO L290 TraceCheckUtils]: 20: Hoare triple {821#true} ~cond := #in~cond; {886#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 06:06:23,523 INFO L290 TraceCheckUtils]: 21: Hoare triple {886#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {890#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 06:06:23,523 INFO L290 TraceCheckUtils]: 22: Hoare triple {890#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {890#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 06:06:23,524 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {890#(not (= |__VERIFIER_assert_#in~cond| 0))} {821#true} #58#return; {897#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-28 06:06:23,524 INFO L290 TraceCheckUtils]: 24: Hoare triple {897#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} assume !(~c~0 < ~k~0); {897#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-28 06:06:23,537 INFO L290 TraceCheckUtils]: 25: Hoare triple {897#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} ~x~0 := ~x~0 * (~z~0 - 1); {904#(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 [2022-04-28 06:06:23,538 INFO L272 TraceCheckUtils]: 26: Hoare triple {904#(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)); {908#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 06:06:23,539 INFO L290 TraceCheckUtils]: 27: Hoare triple {908#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {912#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 06:06:23,539 INFO L290 TraceCheckUtils]: 28: Hoare triple {912#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {822#false} is VALID [2022-04-28 06:06:23,539 INFO L290 TraceCheckUtils]: 29: Hoare triple {822#false} assume !false; {822#false} is VALID [2022-04-28 06:06:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 06:06:23,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 06:06:28,566 INFO L290 TraceCheckUtils]: 29: Hoare triple {822#false} assume !false; {822#false} is VALID [2022-04-28 06:06:28,567 INFO L290 TraceCheckUtils]: 28: Hoare triple {912#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {822#false} is VALID [2022-04-28 06:06:28,567 INFO L290 TraceCheckUtils]: 27: Hoare triple {908#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {912#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 06:06:28,569 INFO L272 TraceCheckUtils]: 26: Hoare triple {928#(= (+ main_~x~0 1) main_~y~0)} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {908#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 06:06:28,569 INFO L290 TraceCheckUtils]: 25: Hoare triple {897#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} ~x~0 := ~x~0 * (~z~0 - 1); {928#(= (+ main_~x~0 1) main_~y~0)} is VALID [2022-04-28 06:06:28,570 INFO L290 TraceCheckUtils]: 24: Hoare triple {897#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} assume !(~c~0 < ~k~0); {897#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-28 06:06:28,571 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {890#(not (= |__VERIFIER_assert_#in~cond| 0))} {821#true} #58#return; {897#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-28 06:06:28,572 INFO L290 TraceCheckUtils]: 22: Hoare triple {890#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {890#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 06:06:28,572 INFO L290 TraceCheckUtils]: 21: Hoare triple {947#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {890#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 06:06:28,573 INFO L290 TraceCheckUtils]: 20: Hoare triple {821#true} ~cond := #in~cond; {947#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 06:06:28,573 INFO L272 TraceCheckUtils]: 19: Hoare triple {821#true} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {821#true} is VALID [2022-04-28 06:06:28,574 INFO L290 TraceCheckUtils]: 18: Hoare triple {821#true} assume !!(#t~post6 < 100);havoc #t~post6; {821#true} is VALID [2022-04-28 06:06:28,574 INFO L290 TraceCheckUtils]: 17: Hoare triple {821#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {821#true} is VALID [2022-04-28 06:06:28,574 INFO L290 TraceCheckUtils]: 16: Hoare triple {821#true} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {821#true} is VALID [2022-04-28 06:06:28,574 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {821#true} {821#true} #56#return; {821#true} is VALID [2022-04-28 06:06:28,574 INFO L290 TraceCheckUtils]: 14: Hoare triple {821#true} assume true; {821#true} is VALID [2022-04-28 06:06:28,574 INFO L290 TraceCheckUtils]: 13: Hoare triple {821#true} assume !(0 == ~cond); {821#true} is VALID [2022-04-28 06:06:28,575 INFO L290 TraceCheckUtils]: 12: Hoare triple {821#true} ~cond := #in~cond; {821#true} is VALID [2022-04-28 06:06:28,575 INFO L272 TraceCheckUtils]: 11: Hoare triple {821#true} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {821#true} is VALID [2022-04-28 06:06:28,575 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {821#true} {821#true} #54#return; {821#true} is VALID [2022-04-28 06:06:28,575 INFO L290 TraceCheckUtils]: 9: Hoare triple {821#true} assume true; {821#true} is VALID [2022-04-28 06:06:28,575 INFO L290 TraceCheckUtils]: 8: Hoare triple {821#true} assume !(0 == ~cond); {821#true} is VALID [2022-04-28 06:06:28,576 INFO L290 TraceCheckUtils]: 7: Hoare triple {821#true} ~cond := #in~cond; {821#true} is VALID [2022-04-28 06:06:28,576 INFO L272 TraceCheckUtils]: 6: Hoare triple {821#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {821#true} is VALID [2022-04-28 06:06:28,576 INFO L290 TraceCheckUtils]: 5: Hoare triple {821#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;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {821#true} is VALID [2022-04-28 06:06:28,576 INFO L272 TraceCheckUtils]: 4: Hoare triple {821#true} call #t~ret7 := main(); {821#true} is VALID [2022-04-28 06:06:28,576 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {821#true} {821#true} #62#return; {821#true} is VALID [2022-04-28 06:06:28,577 INFO L290 TraceCheckUtils]: 2: Hoare triple {821#true} assume true; {821#true} is VALID [2022-04-28 06:06:28,577 INFO L290 TraceCheckUtils]: 1: Hoare triple {821#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);~counter~0 := 0; {821#true} is VALID [2022-04-28 06:06:28,577 INFO L272 TraceCheckUtils]: 0: Hoare triple {821#true} call ULTIMATE.init(); {821#true} is VALID [2022-04-28 06:06:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 06:06:28,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 06:06:28,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058460856] [2022-04-28 06:06:28,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 06:06:28,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794419123] [2022-04-28 06:06:28,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794419123] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 06:06:28,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 06:06:28,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-28 06:06:28,578 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 06:06:28,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [832745365] [2022-04-28 06:06:28,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [832745365] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:28,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:28,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-28 06:06:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759948830] [2022-04-28 06:06:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 06:06:28,580 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-04-28 06:06:28,580 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 06:06:28,580 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 06:06:28,605 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:28,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-28 06:06:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-28 06:06:28,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-28 06:06:28,607 INFO L87 Difference]: Start difference. First operand 32 states and 35 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 06:06:28,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:28,833 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-28 06:06:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 06:06:28,834 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-04-28 06:06:28,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 06:06:28,834 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 06:06:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2022-04-28 06:06:28,835 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 06:06:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2022-04-28 06:06:28,836 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 28 transitions. [2022-04-28 06:06:28,880 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:28,880 INFO L225 Difference]: With dead ends: 32 [2022-04-28 06:06:28,880 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 06:06:28,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-28 06:06:28,882 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 06:06:28,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 122 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-04-28 06:06:28,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 06:06:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 06:06:28,883 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 06:06:28,883 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) [2022-04-28 06:06:28,883 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) [2022-04-28 06:06:28,883 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) [2022-04-28 06:06:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:28,883 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 06:06:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 06:06:28,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:28,884 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:28,884 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. [2022-04-28 06:06:28,884 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. [2022-04-28 06:06:28,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:28,884 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 06:06:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 06:06:28,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:28,884 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:28,884 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 06:06:28,884 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 06:06:28,885 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) [2022-04-28 06:06:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 06:06:28,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-04-28 06:06:28,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 06:06:28,885 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 06:06:28,885 INFO L496 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 06:06:28,885 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 06:06:28,885 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 06:06:28,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:28,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 06:06:28,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-28 06:06:29,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:29,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 06:06:29,265 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2022-04-28 06:06:29,265 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 9) no Hoare annotation was computed. [2022-04-28 06:06:29,265 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2022-04-28 06:06:29,265 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2022-04-28 06:06:29,265 INFO L902 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: true [2022-04-28 06:06:29,265 INFO L902 garLoopResultBuilder]: At program point L13-2(lines 12 14) the Hoare annotation is: true [2022-04-28 06:06:29,265 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 12 14) the Hoare annotation is: true [2022-04-28 06:06:29,266 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 45) the Hoare annotation is: (or (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) (not (<= |old(~counter~0)| 0))) [2022-04-28 06:06:29,266 INFO L895 garLoopResultBuilder]: At program point L35-4(lines 35 45) the Hoare annotation is: (or (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) (not (<= |old(~counter~0)| 0))) [2022-04-28 06:06:29,266 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (<= |old(~counter~0)| 0))) [2022-04-28 06:06:29,266 INFO L902 garLoopResultBuilder]: At program point mainEXIT(lines 23 51) the Hoare annotation is: true [2022-04-28 06:06:29,266 INFO L902 garLoopResultBuilder]: At program point mainFINAL(lines 23 51) the Hoare annotation is: true [2022-04-28 06:06:29,266 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (or (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) (not (<= |old(~counter~0)| 0))) [2022-04-28 06:06:29,266 INFO L895 garLoopResultBuilder]: At program point L36-1(lines 35 45) the Hoare annotation is: (or (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) (not (<= |old(~counter~0)| 0))) [2022-04-28 06:06:29,266 INFO L895 garLoopResultBuilder]: At program point mainENTRY(lines 23 51) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (<= |old(~counter~0)| 0))) [2022-04-28 06:06:29,266 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (<= |old(~counter~0)| 0))) [2022-04-28 06:06:29,267 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (<= |old(~counter~0)| 0))) [2022-04-28 06:06:29,267 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (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)))))) [2022-04-28 06:06:29,267 INFO L902 garLoopResultBuilder]: At program point L49-1(line 49) the Hoare annotation is: true [2022-04-28 06:06:29,267 INFO L895 garLoopResultBuilder]: At program point L35-1(lines 35 45) the Hoare annotation is: (or (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) (not (<= |old(~counter~0)| 0))) [2022-04-28 06:06:29,267 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-28 06:06:29,267 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 06:06:29,267 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-28 06:06:29,267 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 06:06:29,267 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-28 06:06:29,267 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 06:06:29,268 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 06:06:29,268 INFO L895 garLoopResultBuilder]: At program point L17(lines 17 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 06:06:29,268 INFO L895 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|))) [2022-04-28 06:06:29,268 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2022-04-28 06:06:29,268 INFO L895 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|))) [2022-04-28 06:06:29,268 INFO L895 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|))) [2022-04-28 06:06:29,268 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 06:06:29,270 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2] [2022-04-28 06:06:29,272 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 06:06:29,274 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 06:06:29,277 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 06:06:29,312 INFO L163 areAnnotationChecker]: CFG has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 06:06:29,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 06:06:29 BoogieIcfgContainer [2022-04-28 06:06:29,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 06:06:29,321 INFO L158 Benchmark]: Toolchain (without parser) took 11991.98ms. Allocated memory was 182.5MB in the beginning and 254.8MB in the end (delta: 72.4MB). Free memory was 133.4MB in the beginning and 209.8MB in the end (delta: -76.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 06:06:29,321 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 06:06:29,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.89ms. Allocated memory is still 182.5MB. Free memory was 133.2MB in the beginning and 158.2MB in the end (delta: -25.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 06:06:29,322 INFO L158 Benchmark]: Boogie Preprocessor took 25.00ms. Allocated memory is still 182.5MB. Free memory was 158.2MB in the beginning and 156.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 06:06:29,322 INFO L158 Benchmark]: RCFGBuilder took 248.42ms. Allocated memory is still 182.5MB. Free memory was 156.7MB in the beginning and 145.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 06:06:29,322 INFO L158 Benchmark]: TraceAbstraction took 11492.52ms. Allocated memory was 182.5MB in the beginning and 254.8MB in the end (delta: 72.4MB). Free memory was 145.5MB in the beginning and 209.8MB in the end (delta: -64.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-04-28 06:06:29,324 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 182.5MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 220.89ms. Allocated memory is still 182.5MB. Free memory was 133.2MB in the beginning and 158.2MB in the end (delta: -25.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.00ms. Allocated memory is still 182.5MB. Free memory was 158.2MB in the beginning and 156.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 248.42ms. Allocated memory is still 182.5MB. Free memory was 156.7MB in the beginning and 145.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 11492.52ms. Allocated memory was 182.5MB in the beginning and 254.8MB in the end (delta: 72.4MB). Free memory was 145.5MB in the beginning and 209.8MB in the end (delta: -64.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 308 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 12 IncrementalHoareTripleChecker+Unchecked, 207 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 101 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 18, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 68 PreInvPairs, 98 NumberOfFragments, 187 HoareAnnotationTreeSize, 68 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 76 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: 35]: Loop Invariant Derived loop invariant: z * x + 1 == y + x || !(\old(counter) <= 0) - ProcedureContractResult [Line: 12]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: 1 - ProcedureContractResult [Line: 23]: 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! [2022-04-28 06:06:29,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...