/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 12:45:29,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 12:45:29,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 12:45:29,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 12:45:29,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 12:45:29,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 12:45:29,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 12:45:29,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 12:45:29,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 12:45:29,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 12:45:29,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 12:45:29,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 12:45:29,115 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 12:45:29,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 12:45:29,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 12:45:29,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 12:45:29,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 12:45:29,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-08 12:45:29,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 12:45:29,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 12:45:29,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 12:45:29,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 12:45:29,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 12:45:29,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 12:45:29,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 12:45:29,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 12:45:29,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 12:45:29,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 12:45:29,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 12:45:29,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 12:45:29,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 12:45:29,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 12:45:29,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 12:45:29,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 12:45:29,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 12:45:29,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 12:45:29,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 12:45:29,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:45:29,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 12:45:29,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 12:45:29,143 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 12:45:29,143 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 12:45:29,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 12:45:29,143 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 12:45:29,143 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 12:45:29,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 12:45:29,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 12:45:29,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 12:45:29,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 12:45:29,351 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 12:45:29,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c [2022-04-08 12:45:29,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b5df0d3/18db20b5040f451da540402ce2a76b0e/FLAGc8b8962b9 [2022-04-08 12:45:29,741 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 12:45:29,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c [2022-04-08 12:45:29,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b5df0d3/18db20b5040f451da540402ce2a76b0e/FLAGc8b8962b9 [2022-04-08 12:45:29,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b5df0d3/18db20b5040f451da540402ce2a76b0e [2022-04-08 12:45:29,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 12:45:29,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 12:45:29,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 12:45:29,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 12:45:29,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 12:45:29,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:29,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4703ebc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29, skipping insertion in model container [2022-04-08 12:45:29,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:29,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 12:45:29,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 12:45:29,903 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/geo2-ll_valuebound5.c[525,538] [2022-04-08 12:45:29,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:45:29,932 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 12:45:29,946 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/geo2-ll_valuebound5.c[525,538] [2022-04-08 12:45:29,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:45:29,964 INFO L208 MainTranslator]: Completed translation [2022-04-08 12:45:29,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29 WrapperNode [2022-04-08 12:45:29,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 12:45:29,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 12:45:29,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 12:45:29,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 12:45:29,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:29,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:29,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:29,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:29,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:29,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:29,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:29,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 12:45:29,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 12:45:29,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 12:45:29,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 12:45:29,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29" (1/1) ... [2022-04-08 12:45:30,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:45:30,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:45:30,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-08 12:45:30,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-08 12:45:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 12:45:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 12:45:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 12:45:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 12:45:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 12:45:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 12:45:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 12:45:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 12:45:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 12:45:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 12:45:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 12:45:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 12:45:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 12:45:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 12:45:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 12:45:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 12:45:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 12:45:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 12:45:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 12:45:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 12:45:30,103 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 12:45:30,105 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 12:45:30,224 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 12:45:30,229 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 12:45:30,229 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 12:45:30,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:45:30 BoogieIcfgContainer [2022-04-08 12:45:30,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 12:45:30,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 12:45:30,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 12:45:30,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 12:45:30,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 12:45:29" (1/3) ... [2022-04-08 12:45:30,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203a1a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:45:30, skipping insertion in model container [2022-04-08 12:45:30,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:45:29" (2/3) ... [2022-04-08 12:45:30,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203a1a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:45:30, skipping insertion in model container [2022-04-08 12:45:30,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:45:30" (3/3) ... [2022-04-08 12:45:30,235 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound5.c [2022-04-08 12:45:30,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 12:45:30,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 12:45:30,265 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 12:45:30,269 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-08 12:45:30,269 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 12:45:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2022-04-08 12:45:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 12:45:30,284 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:45:30,285 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:45:30,285 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:45:30,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:45:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1276201559, now seen corresponding path program 1 times [2022-04-08 12:45:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:45:30,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1443432675] [2022-04-08 12:45:30,300 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:45:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1276201559, now seen corresponding path program 2 times [2022-04-08 12:45:30,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:45:30,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161550149] [2022-04-08 12:45:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:45:30,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:45:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:45:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 12:45:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:45:30,434 INFO L290 TraceCheckUtils]: 0: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {32#true} is VALID [2022-04-08 12:45:30,434 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-08 12:45:30,434 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-08 12:45:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 12:45:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:45:30,441 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-08 12:45:30,442 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-08 12:45:30,442 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-08 12:45:30,442 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-08 12:45:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-08 12:45:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:45:30,448 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-08 12:45:30,448 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-08 12:45:30,449 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-08 12:45:30,449 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {33#false} #55#return; {33#false} is VALID [2022-04-08 12:45:30,450 INFO L272 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 12:45:30,450 INFO L290 TraceCheckUtils]: 1: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {32#true} is VALID [2022-04-08 12:45:30,450 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-08 12:45:30,450 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-08 12:45:30,450 INFO L272 TraceCheckUtils]: 4: Hoare triple {32#true} call #t~ret6 := main(); {32#true} is VALID [2022-04-08 12:45:30,451 INFO L290 TraceCheckUtils]: 5: Hoare triple {32#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; {32#true} is VALID [2022-04-08 12:45:30,451 INFO L272 TraceCheckUtils]: 6: Hoare triple {32#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 5 then 1 else 0)); {32#true} is VALID [2022-04-08 12:45:30,451 INFO L290 TraceCheckUtils]: 7: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-08 12:45:30,451 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-08 12:45:30,451 INFO L290 TraceCheckUtils]: 9: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-08 12:45:30,452 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-08 12:45:30,452 INFO L290 TraceCheckUtils]: 11: Hoare triple {33#false} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {33#false} is VALID [2022-04-08 12:45:30,452 INFO L272 TraceCheckUtils]: 12: Hoare triple {33#false} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 5 then 1 else 0)); {32#true} is VALID [2022-04-08 12:45:30,452 INFO L290 TraceCheckUtils]: 13: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-08 12:45:30,452 INFO L290 TraceCheckUtils]: 14: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-08 12:45:30,453 INFO L290 TraceCheckUtils]: 15: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-08 12:45:30,453 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {33#false} {33#false} #55#return; {33#false} is VALID [2022-04-08 12:45:30,453 INFO L290 TraceCheckUtils]: 17: Hoare triple {33#false} ~x~0 := 1;~y~0 := 1;~c~0 := 1; {33#false} is VALID [2022-04-08 12:45:30,453 INFO L290 TraceCheckUtils]: 18: Hoare triple {33#false} assume false; {33#false} is VALID [2022-04-08 12:45:30,453 INFO L272 TraceCheckUtils]: 19: Hoare triple {33#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {33#false} is VALID [2022-04-08 12:45:30,453 INFO L290 TraceCheckUtils]: 20: Hoare triple {33#false} ~cond := #in~cond; {33#false} is VALID [2022-04-08 12:45:30,454 INFO L290 TraceCheckUtils]: 21: Hoare triple {33#false} assume 0 == ~cond; {33#false} is VALID [2022-04-08 12:45:30,454 INFO L290 TraceCheckUtils]: 22: Hoare triple {33#false} assume !false; {33#false} is VALID [2022-04-08 12:45:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 12:45:30,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:45:30,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161550149] [2022-04-08 12:45:30,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161550149] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:45:30,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:45:30,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:45:30,457 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:45:30,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1443432675] [2022-04-08 12:45:30,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1443432675] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:45:30,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:45:30,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:45:30,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641725151] [2022-04-08 12:45:30,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:45:30,462 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 [2022-04-08 12:45:30,463 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:45:30,465 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) [2022-04-08 12:45:30,501 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:45:30,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 12:45:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:45:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 12:45:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:45:30,517 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2022-04-08 12:45:30,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:45:30,597 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-04-08 12:45:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 12:45:30,598 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 [2022-04-08 12:45:30,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:45:30,599 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) [2022-04-08 12:45:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-04-08 12:45:30,604 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) [2022-04-08 12:45:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-04-08 12:45:30,607 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 66 transitions. [2022-04-08 12:45:30,672 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:45:30,678 INFO L225 Difference]: With dead ends: 51 [2022-04-08 12:45:30,678 INFO L226 Difference]: Without dead ends: 24 [2022-04-08 12:45:30,680 INFO L912 BasicCegarLoop]: 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 [2022-04-08 12:45:30,682 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:45:30,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:45:30,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-08 12:45:30,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-08 12:45:30,702 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:45:30,703 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-04-08 12:45:30,703 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-04-08 12:45:30,704 INFO L87 Difference]: Start difference. First operand 24 states. Second operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-04-08 12:45:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:45:30,706 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-08 12:45:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-08 12:45:30,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:45:30,707 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:45:30,707 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 24 states. [2022-04-08 12:45:30,708 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 24 states. [2022-04-08 12:45:30,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:45:30,710 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-08 12:45:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-08 12:45:30,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:45:30,710 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:45:30,710 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:45:30,710 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:45:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-04-08 12:45:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-04-08 12:45:30,713 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2022-04-08 12:45:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:45:30,713 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-04-08 12:45:30,714 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (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) [2022-04-08 12:45:30,714 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 24 states and 26 transitions. [2022-04-08 12:45:30,755 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:45:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-08 12:45:30,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 12:45:30,756 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:45:30,756 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:45:30,756 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 12:45:30,756 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:45:30,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:45:30,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1874219407, now seen corresponding path program 1 times [2022-04-08 12:45:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:45:30,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [594223084] [2022-04-08 12:45:30,758 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:45:30,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1874219407, now seen corresponding path program 2 times [2022-04-08 12:45:30,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:45:30,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021640974] [2022-04-08 12:45:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:45:30,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:45:30,776 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:45:30,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431092898] [2022-04-08 12:45:30,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:45:30,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:45:30,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:45:30,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 12:45:30,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 12:45:30,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 12:45:30,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:45:30,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 12:45:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:45:30,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:45:31,059 INFO L272 TraceCheckUtils]: 0: Hoare triple {246#true} call ULTIMATE.init(); {246#true} is VALID [2022-04-08 12:45:31,060 INFO L290 TraceCheckUtils]: 1: Hoare triple {246#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); {246#true} is VALID [2022-04-08 12:45:31,060 INFO L290 TraceCheckUtils]: 2: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-08 12:45:31,060 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {246#true} {246#true} #61#return; {246#true} is VALID [2022-04-08 12:45:31,060 INFO L272 TraceCheckUtils]: 4: Hoare triple {246#true} call #t~ret6 := main(); {246#true} is VALID [2022-04-08 12:45:31,060 INFO L290 TraceCheckUtils]: 5: Hoare triple {246#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; {246#true} is VALID [2022-04-08 12:45:31,061 INFO L272 TraceCheckUtils]: 6: Hoare triple {246#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 5 then 1 else 0)); {246#true} is VALID [2022-04-08 12:45:31,061 INFO L290 TraceCheckUtils]: 7: Hoare triple {246#true} ~cond := #in~cond; {246#true} is VALID [2022-04-08 12:45:31,061 INFO L290 TraceCheckUtils]: 8: Hoare triple {246#true} assume !(0 == ~cond); {246#true} is VALID [2022-04-08 12:45:31,061 INFO L290 TraceCheckUtils]: 9: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-08 12:45:31,061 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {246#true} {246#true} #53#return; {246#true} is VALID [2022-04-08 12:45:31,061 INFO L290 TraceCheckUtils]: 11: Hoare triple {246#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {246#true} is VALID [2022-04-08 12:45:31,062 INFO L272 TraceCheckUtils]: 12: Hoare triple {246#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 5 then 1 else 0)); {246#true} is VALID [2022-04-08 12:45:31,062 INFO L290 TraceCheckUtils]: 13: Hoare triple {246#true} ~cond := #in~cond; {246#true} is VALID [2022-04-08 12:45:31,062 INFO L290 TraceCheckUtils]: 14: Hoare triple {246#true} assume !(0 == ~cond); {246#true} is VALID [2022-04-08 12:45:31,062 INFO L290 TraceCheckUtils]: 15: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-08 12:45:31,062 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {246#true} {246#true} #55#return; {246#true} is VALID [2022-04-08 12:45:31,065 INFO L290 TraceCheckUtils]: 17: Hoare triple {246#true} ~x~0 := 1;~y~0 := 1;~c~0 := 1; {302#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-08 12:45:31,066 INFO L290 TraceCheckUtils]: 18: Hoare triple {302#(and (= main_~y~0 1) (= main_~x~0 1))} assume !false; {302#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-08 12:45:31,067 INFO L272 TraceCheckUtils]: 19: Hoare triple {302#(and (= main_~y~0 1) (= main_~x~0 1))} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {309#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:45:31,067 INFO L290 TraceCheckUtils]: 20: Hoare triple {309#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {313#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:45:31,068 INFO L290 TraceCheckUtils]: 21: Hoare triple {313#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {247#false} is VALID [2022-04-08 12:45:31,068 INFO L290 TraceCheckUtils]: 22: Hoare triple {247#false} assume !false; {247#false} is VALID [2022-04-08 12:45:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 12:45:31,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 12:45:31,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:45:31,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021640974] [2022-04-08 12:45:31,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:45:31,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431092898] [2022-04-08 12:45:31,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431092898] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:45:31,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:45:31,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:45:31,073 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:45:31,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [594223084] [2022-04-08 12:45:31,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [594223084] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:45:31,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:45:31,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:45:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361601588] [2022-04-08 12:45:31,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:45:31,074 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 [2022-04-08 12:45:31,074 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:45:31,075 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) [2022-04-08 12:45:31,088 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:45:31,089 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 12:45:31,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:45:31,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 12:45:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 12:45:31,090 INFO L87 Difference]: Start difference. First operand 24 states and 26 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) [2022-04-08 12:45:31,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:45:31,194 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-04-08 12:45:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 12:45:31,194 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 [2022-04-08 12:45:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:45:31,195 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) [2022-04-08 12:45:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2022-04-08 12:45:31,196 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) [2022-04-08 12:45:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2022-04-08 12:45:31,198 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 37 transitions. [2022-04-08 12:45:31,225 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:45:31,228 INFO L225 Difference]: With dead ends: 34 [2022-04-08 12:45:31,228 INFO L226 Difference]: Without dead ends: 31 [2022-04-08 12:45:31,230 INFO L912 BasicCegarLoop]: 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 [2022-04-08 12:45:31,232 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:45:31,235 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 84 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:45:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-04-08 12:45:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-04-08 12:45:31,248 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:45:31,249 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:45:31,250 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:45:31,250 INFO L87 Difference]: Start difference. First operand 31 states. Second operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:45:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:45:31,256 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-04-08 12:45:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-08 12:45:31,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:45:31,257 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:45:31,258 INFO L74 IsIncluded]: Start isIncluded. First operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 31 states. [2022-04-08 12:45:31,259 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 31 states. [2022-04-08 12:45:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:45:31,261 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-04-08 12:45:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-08 12:45:31,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:45:31,261 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:45:31,261 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:45:31,261 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:45:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 12:45:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-04-08 12:45:31,263 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2022-04-08 12:45:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:45:31,263 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-04-08 12:45:31,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (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) [2022-04-08 12:45:31,264 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 31 states and 33 transitions. [2022-04-08 12:45:31,297 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:45:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-08 12:45:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-08 12:45:31,299 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:45:31,299 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:45:31,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-08 12:45:31,507 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:45:31,508 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:45:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:45:31,509 INFO L85 PathProgramCache]: Analyzing trace with hash 156588053, now seen corresponding path program 1 times [2022-04-08 12:45:31,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:45:31,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1929585706] [2022-04-08 12:45:31,510 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:45:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash 156588053, now seen corresponding path program 2 times [2022-04-08 12:45:31,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:45:31,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268041024] [2022-04-08 12:45:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:45:31,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:45:31,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:45:31,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575401399] [2022-04-08 12:45:31,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:45:31,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:45:31,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:45:31,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 12:45:31,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 12:45:31,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 12:45:31,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:45:31,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-08 12:45:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:45:31,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:45:31,792 INFO L272 TraceCheckUtils]: 0: Hoare triple {513#true} call ULTIMATE.init(); {513#true} is VALID [2022-04-08 12:45:31,792 INFO L290 TraceCheckUtils]: 1: Hoare triple {513#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); {513#true} is VALID [2022-04-08 12:45:31,792 INFO L290 TraceCheckUtils]: 2: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:45:31,792 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {513#true} {513#true} #61#return; {513#true} is VALID [2022-04-08 12:45:31,792 INFO L272 TraceCheckUtils]: 4: Hoare triple {513#true} call #t~ret6 := main(); {513#true} is VALID [2022-04-08 12:45:31,793 INFO L290 TraceCheckUtils]: 5: Hoare triple {513#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; {513#true} is VALID [2022-04-08 12:45:31,793 INFO L272 TraceCheckUtils]: 6: Hoare triple {513#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 5 then 1 else 0)); {513#true} is VALID [2022-04-08 12:45:31,793 INFO L290 TraceCheckUtils]: 7: Hoare triple {513#true} ~cond := #in~cond; {513#true} is VALID [2022-04-08 12:45:31,793 INFO L290 TraceCheckUtils]: 8: Hoare triple {513#true} assume !(0 == ~cond); {513#true} is VALID [2022-04-08 12:45:31,793 INFO L290 TraceCheckUtils]: 9: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:45:31,793 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {513#true} {513#true} #53#return; {513#true} is VALID [2022-04-08 12:45:31,793 INFO L290 TraceCheckUtils]: 11: Hoare triple {513#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {513#true} is VALID [2022-04-08 12:45:31,793 INFO L272 TraceCheckUtils]: 12: Hoare triple {513#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 5 then 1 else 0)); {513#true} is VALID [2022-04-08 12:45:31,794 INFO L290 TraceCheckUtils]: 13: Hoare triple {513#true} ~cond := #in~cond; {513#true} is VALID [2022-04-08 12:45:31,794 INFO L290 TraceCheckUtils]: 14: Hoare triple {513#true} assume !(0 == ~cond); {513#true} is VALID [2022-04-08 12:45:31,794 INFO L290 TraceCheckUtils]: 15: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:45:31,794 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {513#true} {513#true} #55#return; {513#true} is VALID [2022-04-08 12:45:31,797 INFO L290 TraceCheckUtils]: 17: Hoare triple {513#true} ~x~0 := 1;~y~0 := 1;~c~0 := 1; {569#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-08 12:45:31,797 INFO L290 TraceCheckUtils]: 18: Hoare triple {569#(and (= main_~y~0 1) (= main_~x~0 1))} assume !false; {569#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-08 12:45:31,798 INFO L272 TraceCheckUtils]: 19: Hoare triple {569#(and (= main_~y~0 1) (= main_~x~0 1))} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {513#true} is VALID [2022-04-08 12:45:31,798 INFO L290 TraceCheckUtils]: 20: Hoare triple {513#true} ~cond := #in~cond; {513#true} is VALID [2022-04-08 12:45:31,798 INFO L290 TraceCheckUtils]: 21: Hoare triple {513#true} assume !(0 == ~cond); {513#true} is VALID [2022-04-08 12:45:31,798 INFO L290 TraceCheckUtils]: 22: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:45:31,798 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {513#true} {569#(and (= main_~y~0 1) (= main_~x~0 1))} #57#return; {569#(and (= main_~y~0 1) (= main_~x~0 1))} is VALID [2022-04-08 12:45:31,799 INFO L290 TraceCheckUtils]: 24: Hoare triple {569#(and (= main_~y~0 1) (= main_~x~0 1))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := 1 + ~x~0 * ~z~0;~y~0 := ~y~0 * ~z~0; {591#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} is VALID [2022-04-08 12:45:31,800 INFO L290 TraceCheckUtils]: 25: Hoare triple {591#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} assume !false; {591#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} is VALID [2022-04-08 12:45:31,801 INFO L272 TraceCheckUtils]: 26: Hoare triple {591#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ main_~z~0 1)))} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {598#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:45:31,801 INFO L290 TraceCheckUtils]: 27: Hoare triple {598#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {602#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:45:31,801 INFO L290 TraceCheckUtils]: 28: Hoare triple {602#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {514#false} is VALID [2022-04-08 12:45:31,802 INFO L290 TraceCheckUtils]: 29: Hoare triple {514#false} assume !false; {514#false} is VALID [2022-04-08 12:45:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 12:45:31,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 12:45:32,013 INFO L290 TraceCheckUtils]: 29: Hoare triple {514#false} assume !false; {514#false} is VALID [2022-04-08 12:45:32,014 INFO L290 TraceCheckUtils]: 28: Hoare triple {602#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {514#false} is VALID [2022-04-08 12:45:32,014 INFO L290 TraceCheckUtils]: 27: Hoare triple {598#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {602#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:45:32,015 INFO L272 TraceCheckUtils]: 26: Hoare triple {618#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {598#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:45:32,016 INFO L290 TraceCheckUtils]: 25: Hoare triple {618#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} assume !false; {618#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} is VALID [2022-04-08 12:45:32,018 INFO L290 TraceCheckUtils]: 24: Hoare triple {625#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := 1 + ~x~0 * ~z~0;~y~0 := ~y~0 * ~z~0; {618#(= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))} is VALID [2022-04-08 12:45:32,019 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {513#true} {625#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} #57#return; {625#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} is VALID [2022-04-08 12:45:32,019 INFO L290 TraceCheckUtils]: 22: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:45:32,019 INFO L290 TraceCheckUtils]: 21: Hoare triple {513#true} assume !(0 == ~cond); {513#true} is VALID [2022-04-08 12:45:32,019 INFO L290 TraceCheckUtils]: 20: Hoare triple {513#true} ~cond := #in~cond; {513#true} is VALID [2022-04-08 12:45:32,019 INFO L272 TraceCheckUtils]: 19: Hoare triple {625#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {513#true} is VALID [2022-04-08 12:45:32,020 INFO L290 TraceCheckUtils]: 18: Hoare triple {625#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} assume !false; {625#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} is VALID [2022-04-08 12:45:32,020 INFO L290 TraceCheckUtils]: 17: Hoare triple {513#true} ~x~0 := 1;~y~0 := 1;~c~0 := 1; {625#(= (+ (* main_~z~0 (+ (* main_~z~0 main_~x~0) 1)) 1) (+ (* main_~z~0 main_~x~0) (* main_~z~0 (* main_~z~0 main_~y~0)) 1))} is VALID [2022-04-08 12:45:32,021 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {513#true} {513#true} #55#return; {513#true} is VALID [2022-04-08 12:45:32,021 INFO L290 TraceCheckUtils]: 15: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:45:32,021 INFO L290 TraceCheckUtils]: 14: Hoare triple {513#true} assume !(0 == ~cond); {513#true} is VALID [2022-04-08 12:45:32,021 INFO L290 TraceCheckUtils]: 13: Hoare triple {513#true} ~cond := #in~cond; {513#true} is VALID [2022-04-08 12:45:32,021 INFO L272 TraceCheckUtils]: 12: Hoare triple {513#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 5 then 1 else 0)); {513#true} is VALID [2022-04-08 12:45:32,021 INFO L290 TraceCheckUtils]: 11: Hoare triple {513#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {513#true} is VALID [2022-04-08 12:45:32,021 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {513#true} {513#true} #53#return; {513#true} is VALID [2022-04-08 12:45:32,021 INFO L290 TraceCheckUtils]: 9: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:45:32,021 INFO L290 TraceCheckUtils]: 8: Hoare triple {513#true} assume !(0 == ~cond); {513#true} is VALID [2022-04-08 12:45:32,022 INFO L290 TraceCheckUtils]: 7: Hoare triple {513#true} ~cond := #in~cond; {513#true} is VALID [2022-04-08 12:45:32,022 INFO L272 TraceCheckUtils]: 6: Hoare triple {513#true} call assume_abort_if_not((if ~z~0 >= 0 && ~z~0 <= 5 then 1 else 0)); {513#true} is VALID [2022-04-08 12:45:32,022 INFO L290 TraceCheckUtils]: 5: Hoare triple {513#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; {513#true} is VALID [2022-04-08 12:45:32,022 INFO L272 TraceCheckUtils]: 4: Hoare triple {513#true} call #t~ret6 := main(); {513#true} is VALID [2022-04-08 12:45:32,022 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {513#true} {513#true} #61#return; {513#true} is VALID [2022-04-08 12:45:32,022 INFO L290 TraceCheckUtils]: 2: Hoare triple {513#true} assume true; {513#true} is VALID [2022-04-08 12:45:32,022 INFO L290 TraceCheckUtils]: 1: Hoare triple {513#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); {513#true} is VALID [2022-04-08 12:45:32,022 INFO L272 TraceCheckUtils]: 0: Hoare triple {513#true} call ULTIMATE.init(); {513#true} is VALID [2022-04-08 12:45:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 12:45:32,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:45:32,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268041024] [2022-04-08 12:45:32,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:45:32,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575401399] [2022-04-08 12:45:32,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575401399] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-08 12:45:32,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-08 12:45:32,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-04-08 12:45:32,024 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:45:32,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1929585706] [2022-04-08 12:45:32,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1929585706] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:45:32,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:45:32,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 12:45:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047182661] [2022-04-08 12:45:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:45:32,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-04-08 12:45:32,025 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:45:32,025 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:45:32,051 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:45:32,052 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 12:45:32,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:45:32,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 12:45:32,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-04-08 12:45:32,052 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:45:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:45:32,327 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-04-08 12:45:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 12:45:32,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-04-08 12:45:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:45:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:45:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2022-04-08 12:45:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:45:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2022-04-08 12:45:32,330 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 26 transitions. [2022-04-08 12:45:32,357 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:45:32,357 INFO L225 Difference]: With dead ends: 31 [2022-04-08 12:45:32,357 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 12:45:32,358 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-04-08 12:45:32,359 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 12:45:32,359 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 12:45:32,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 12:45:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 12:45:32,359 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:45:32,359 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:45:32,360 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:45:32,360 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:45:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:45:32,360 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:45:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:45:32,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:45:32,360 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:45:32,360 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-08 12:45:32,360 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-08 12:45:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:45:32,360 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:45:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:45:32,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:45:32,360 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:45:32,360 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:45:32,360 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:45:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-08 12:45:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 12:45:32,361 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-04-08 12:45:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:45:32,361 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 12:45:32,361 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-08 12:45:32,361 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 12:45:32,361 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:45:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:45:32,361 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:45:32,363 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 12:45:32,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 12:45:32,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-08 12:45:32,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 12:45:32,668 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-08 12:45:32,668 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-08 12:45:32,668 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point L12-2(lines 11 13) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 11 13) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 44) the Hoare annotation is: (= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1)) [2022-04-08 12:45:32,669 INFO L878 garLoopResultBuilder]: At program point L35-3(lines 35 44) the Hoare annotation is: (= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1)) [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 23 47) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 23 47) the Hoare annotation is: true [2022-04-08 12:45:32,669 INFO L885 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: true [2022-04-08 12:45:32,670 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 23 47) the Hoare annotation is: true [2022-04-08 12:45:32,670 INFO L878 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1)) [2022-04-08 12:45:32,670 INFO L878 garLoopResultBuilder]: At program point L36-1(lines 35 44) the Hoare annotation is: (= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1)) [2022-04-08 12:45:32,670 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:45:32,670 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-08 12:45:32,670 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:45:32,670 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:45:32,670 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 12:45:32,670 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 12:45:32,670 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:45:32,670 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:45:32,670 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-08 12:45:32,670 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-08 12:45:32,670 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-08 12:45:32,671 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-08 12:45:32,671 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:45:32,673 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-04-08 12:45:32,673 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 12:45:32,676 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 12:45:32,676 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 12:45:32,693 INFO L163 areAnnotationChecker]: CFG has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 12:45:32,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 12:45:32 BoogieIcfgContainer [2022-04-08 12:45:32,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 12:45:32,700 INFO L158 Benchmark]: Toolchain (without parser) took 2942.42ms. Allocated memory was 207.6MB in the beginning and 252.7MB in the end (delta: 45.1MB). Free memory was 159.7MB in the beginning and 131.9MB in the end (delta: 27.8MB). Peak memory consumption was 73.8MB. Max. memory is 8.0GB. [2022-04-08 12:45:32,700 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 207.6MB. Free memory is still 176.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 12:45:32,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.78ms. Allocated memory is still 207.6MB. Free memory was 159.6MB in the beginning and 184.1MB in the end (delta: -24.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 12:45:32,701 INFO L158 Benchmark]: Boogie Preprocessor took 29.82ms. Allocated memory is still 207.6MB. Free memory was 184.1MB in the beginning and 182.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 12:45:32,701 INFO L158 Benchmark]: RCFGBuilder took 234.79ms. Allocated memory is still 207.6MB. Free memory was 182.6MB in the beginning and 171.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 12:45:32,701 INFO L158 Benchmark]: TraceAbstraction took 2468.42ms. Allocated memory was 207.6MB in the beginning and 252.7MB in the end (delta: 45.1MB). Free memory was 171.1MB in the beginning and 131.9MB in the end (delta: 39.2MB). Peak memory consumption was 85.7MB. Max. memory is 8.0GB. [2022-04-08 12:45:32,702 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 207.6MB. Free memory is still 176.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.78ms. Allocated memory is still 207.6MB. Free memory was 159.6MB in the beginning and 184.1MB in the end (delta: -24.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.82ms. Allocated memory is still 207.6MB. Free memory was 184.1MB in the beginning and 182.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 234.79ms. Allocated memory is still 207.6MB. Free memory was 182.6MB in the beginning and 171.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2468.42ms. Allocated memory was 207.6MB in the beginning and 252.7MB in the end (delta: 45.1MB). Free memory was 171.1MB in the beginning and 131.9MB in the end (delta: 39.2MB). Peak memory consumption was 85.7MB. 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: 17]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 181 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 111 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 70 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 67 PreInvPairs, 99 NumberOfFragments, 102 HoareAnnotationTreeSize, 67 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 77 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: x + z * y == z * x + 1 - ProcedureContractResult [Line: 11]: 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: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: !(1 <= \old(cond)) || 1 <= cond RESULT: Ultimate proved your program to be correct! [2022-04-08 12:45:32,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...