/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/ps5-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 13:32:52,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 13:32:52,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 13:32:52,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 13:32:52,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 13:32:52,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 13:32:52,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 13:32:52,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-15 13:32:52,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 13:32:52,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 13:32:52,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 13:32:52,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 13:32:52,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 13:32:52,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 13:32:52,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 13:32:52,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 13:32:52,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 13:32:52,899 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 13:32:52,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 13:32:52,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 13:32:52,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 13:32:52,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 13:32:52,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 13:32:52,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 13:32:52,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 13:32:52,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 13:32:52,900 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 13:32:52,900 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 13:32:52,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 13:32:52,900 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-15 13:32:52,900 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 13:32:53,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 13:32:53,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 13:32:53,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 13:32:53,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 13:32:53,121 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 13:32:53,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps5-ll.c [2022-04-15 13:32:53,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44124df80/854b85f9b2a64ad5b05f9a93567f974b/FLAGdd7553148 [2022-04-15 13:32:53,469 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 13:32:53,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps5-ll.c [2022-04-15 13:32:53,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44124df80/854b85f9b2a64ad5b05f9a93567f974b/FLAGdd7553148 [2022-04-15 13:32:53,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44124df80/854b85f9b2a64ad5b05f9a93567f974b [2022-04-15 13:32:53,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 13:32:53,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 13:32:53,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 13:32:53,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 13:32:53,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 13:32:53,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:32:53" (1/1) ... [2022-04-15 13:32:53,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4434640c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:53, skipping insertion in model container [2022-04-15 13:32:53,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:32:53" (1/1) ... [2022-04-15 13:32:53,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 13:32:53,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 13:32:54,039 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/ps5-ll.c[458,471] [2022-04-15 13:32:54,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 13:32:54,073 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 13:32:54,081 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/ps5-ll.c[458,471] [2022-04-15 13:32:54,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 13:32:54,103 INFO L208 MainTranslator]: Completed translation [2022-04-15 13:32:54,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54 WrapperNode [2022-04-15 13:32:54,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 13:32:54,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 13:32:54,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 13:32:54,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 13:32:54,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54" (1/1) ... [2022-04-15 13:32:54,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54" (1/1) ... [2022-04-15 13:32:54,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54" (1/1) ... [2022-04-15 13:32:54,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54" (1/1) ... [2022-04-15 13:32:54,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54" (1/1) ... [2022-04-15 13:32:54,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54" (1/1) ... [2022-04-15 13:32:54,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54" (1/1) ... [2022-04-15 13:32:54,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 13:32:54,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 13:32:54,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 13:32:54,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 13:32:54,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54" (1/1) ... [2022-04-15 13:32:54,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 13:32:54,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 13:32:54,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-15 13:32:54,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-15 13:32:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 13:32:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 13:32:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 13:32:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 13:32:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 13:32:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 13:32:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 13:32:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 13:32:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 13:32:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 13:32:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-15 13:32:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 13:32:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 13:32:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 13:32:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 13:32:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 13:32:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 13:32:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 13:32:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 13:32:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 13:32:54,238 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 13:32:54,239 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 13:32:54,331 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 13:32:54,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 13:32:54,337 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 13:32:54,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:32:54 BoogieIcfgContainer [2022-04-15 13:32:54,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 13:32:54,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 13:32:54,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 13:32:54,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 13:32:54,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:32:53" (1/3) ... [2022-04-15 13:32:54,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a40c254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:32:54, skipping insertion in model container [2022-04-15 13:32:54,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:32:54" (2/3) ... [2022-04-15 13:32:54,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a40c254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:32:54, skipping insertion in model container [2022-04-15 13:32:54,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:32:54" (3/3) ... [2022-04-15 13:32:54,343 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll.c [2022-04-15 13:32:54,346 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 13:32:54,346 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 13:32:54,372 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 13:32:54,376 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-15 13:32:54,377 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 13:32:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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) [2022-04-15 13:32:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-15 13:32:54,408 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 13:32:54,408 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 13:32:54,409 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 13:32:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 13:32:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash -630235283, now seen corresponding path program 1 times [2022-04-15 13:32:54,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 13:32:54,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1940644486] [2022-04-15 13:32:54,438 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 13:32:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash -630235283, now seen corresponding path program 2 times [2022-04-15 13:32:54,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 13:32:54,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047606204] [2022-04-15 13:32:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 13:32:54,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 13:32:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 13:32:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 13:32:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 13:32:54,592 INFO L290 TraceCheckUtils]: 0: Hoare triple {40#(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(9, 2);call #Ultimate.allocInit(12, 3); {31#true} is VALID [2022-04-15 13:32:54,593 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#true} assume true; {31#true} is VALID [2022-04-15 13:32:54,593 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {31#true} {31#true} #60#return; {31#true} is VALID [2022-04-15 13:32:54,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-15 13:32:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 13:32:54,612 INFO L290 TraceCheckUtils]: 0: Hoare triple {31#true} ~cond := #in~cond; {31#true} is VALID [2022-04-15 13:32:54,613 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#true} assume 0 == ~cond;assume false; {32#false} is VALID [2022-04-15 13:32:54,613 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#false} assume true; {32#false} is VALID [2022-04-15 13:32:54,614 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#false} {31#true} #52#return; {32#false} is VALID [2022-04-15 13:32:54,616 INFO L272 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {40#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 13:32:54,617 INFO L290 TraceCheckUtils]: 1: Hoare triple {40#(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(9, 2);call #Ultimate.allocInit(12, 3); {31#true} is VALID [2022-04-15 13:32:54,617 INFO L290 TraceCheckUtils]: 2: Hoare triple {31#true} assume true; {31#true} is VALID [2022-04-15 13:32:54,617 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {31#true} {31#true} #60#return; {31#true} is VALID [2022-04-15 13:32:54,617 INFO L272 TraceCheckUtils]: 4: Hoare triple {31#true} call #t~ret5 := main(); {31#true} is VALID [2022-04-15 13:32:54,617 INFO L290 TraceCheckUtils]: 5: Hoare triple {31#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {31#true} is VALID [2022-04-15 13:32:54,617 INFO L272 TraceCheckUtils]: 6: Hoare triple {31#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {31#true} is VALID [2022-04-15 13:32:54,618 INFO L290 TraceCheckUtils]: 7: Hoare triple {31#true} ~cond := #in~cond; {31#true} is VALID [2022-04-15 13:32:54,618 INFO L290 TraceCheckUtils]: 8: Hoare triple {31#true} assume 0 == ~cond;assume false; {32#false} is VALID [2022-04-15 13:32:54,618 INFO L290 TraceCheckUtils]: 9: Hoare triple {32#false} assume true; {32#false} is VALID [2022-04-15 13:32:54,619 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {32#false} {31#true} #52#return; {32#false} is VALID [2022-04-15 13:32:54,619 INFO L290 TraceCheckUtils]: 11: Hoare triple {32#false} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {32#false} is VALID [2022-04-15 13:32:54,619 INFO L290 TraceCheckUtils]: 12: Hoare triple {32#false} assume false; {32#false} is VALID [2022-04-15 13:32:54,619 INFO L272 TraceCheckUtils]: 13: Hoare triple {32#false} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {32#false} is VALID [2022-04-15 13:32:54,619 INFO L290 TraceCheckUtils]: 14: Hoare triple {32#false} ~cond := #in~cond; {32#false} is VALID [2022-04-15 13:32:54,619 INFO L290 TraceCheckUtils]: 15: Hoare triple {32#false} assume 0 == ~cond; {32#false} is VALID [2022-04-15 13:32:54,620 INFO L290 TraceCheckUtils]: 16: Hoare triple {32#false} assume !false; {32#false} is VALID [2022-04-15 13:32:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 13:32:54,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 13:32:54,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047606204] [2022-04-15 13:32:54,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047606204] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 13:32:54,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 13:32:54,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 13:32:54,623 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 13:32:54,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1940644486] [2022-04-15 13:32:54,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1940644486] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 13:32:54,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 13:32:54,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 13:32:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119436113] [2022-04-15 13:32:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 13:32:54,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 13:32:54,628 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 13:32:54,637 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:54,676 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:32:54,677 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 13:32:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 13:32:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 13:32:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 13:32:54,699 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:54,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:32:54,794 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2022-04-15 13:32:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 13:32:54,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 13:32:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 13:32:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2022-04-15 13:32:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2022-04-15 13:32:54,807 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 61 transitions. [2022-04-15 13:32:54,880 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:32:54,886 INFO L225 Difference]: With dead ends: 47 [2022-04-15 13:32:54,886 INFO L226 Difference]: Without dead ends: 23 [2022-04-15 13:32:54,888 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 13:32:54,890 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 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 [2022-04-15 13:32:54,891 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 13:32:54,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-15 13:32:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-15 13:32:54,912 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 13:32:54,912 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-04-15 13:32:54,913 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-04-15 13:32:54,913 INFO L87 Difference]: Start difference. First operand 23 states. Second operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-04-15 13:32:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:32:54,916 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-15 13:32:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-04-15 13:32:54,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:32:54,917 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:32:54,917 INFO L74 IsIncluded]: Start isIncluded. First operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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 23 states. [2022-04-15 13:32:54,917 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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 23 states. [2022-04-15 13:32:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:32:54,920 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-15 13:32:54,920 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-04-15 13:32:54,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:32:54,920 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:32:54,920 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 13:32:54,921 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 13:32:54,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-04-15 13:32:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-04-15 13:32:54,923 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2022-04-15 13:32:54,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 13:32:54,924 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-04-15 13:32:54,924 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:54,924 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 25 transitions. [2022-04-15 13:32:54,948 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:32:54,949 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-04-15 13:32:54,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-15 13:32:54,950 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 13:32:54,957 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 13:32:54,958 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 13:32:54,958 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 13:32:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 13:32:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash 51610547, now seen corresponding path program 1 times [2022-04-15 13:32:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 13:32:54,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [619311280] [2022-04-15 13:32:54,969 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 13:32:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash 51610547, now seen corresponding path program 2 times [2022-04-15 13:32:54,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 13:32:54,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531863979] [2022-04-15 13:32:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 13:32:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 13:32:54,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 13:32:54,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244507374] [2022-04-15 13:32:54,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 13:32:54,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 13:32:54,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 13:32:55,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 13:32:55,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 13:32:55,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 13:32:55,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 13:32:55,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-15 13:32:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 13:32:55,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 13:32:55,182 INFO L272 TraceCheckUtils]: 0: Hoare triple {229#true} call ULTIMATE.init(); {229#true} is VALID [2022-04-15 13:32:55,182 INFO L290 TraceCheckUtils]: 1: Hoare triple {229#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(9, 2);call #Ultimate.allocInit(12, 3); {229#true} is VALID [2022-04-15 13:32:55,183 INFO L290 TraceCheckUtils]: 2: Hoare triple {229#true} assume true; {229#true} is VALID [2022-04-15 13:32:55,183 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {229#true} {229#true} #60#return; {229#true} is VALID [2022-04-15 13:32:55,183 INFO L272 TraceCheckUtils]: 4: Hoare triple {229#true} call #t~ret5 := main(); {229#true} is VALID [2022-04-15 13:32:55,183 INFO L290 TraceCheckUtils]: 5: Hoare triple {229#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {229#true} is VALID [2022-04-15 13:32:55,183 INFO L272 TraceCheckUtils]: 6: Hoare triple {229#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {229#true} is VALID [2022-04-15 13:32:55,184 INFO L290 TraceCheckUtils]: 7: Hoare triple {229#true} ~cond := #in~cond; {229#true} is VALID [2022-04-15 13:32:55,184 INFO L290 TraceCheckUtils]: 8: Hoare triple {229#true} assume !(0 == ~cond); {229#true} is VALID [2022-04-15 13:32:55,184 INFO L290 TraceCheckUtils]: 9: Hoare triple {229#true} assume true; {229#true} is VALID [2022-04-15 13:32:55,184 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {229#true} {229#true} #52#return; {229#true} is VALID [2022-04-15 13:32:55,185 INFO L290 TraceCheckUtils]: 11: Hoare triple {229#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {267#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 13:32:55,185 INFO L290 TraceCheckUtils]: 12: Hoare triple {267#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {267#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 13:32:55,186 INFO L272 TraceCheckUtils]: 13: Hoare triple {267#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {274#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 13:32:55,186 INFO L290 TraceCheckUtils]: 14: Hoare triple {274#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {278#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 13:32:55,187 INFO L290 TraceCheckUtils]: 15: Hoare triple {278#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {230#false} is VALID [2022-04-15 13:32:55,187 INFO L290 TraceCheckUtils]: 16: Hoare triple {230#false} assume !false; {230#false} is VALID [2022-04-15 13:32:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 13:32:55,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 13:32:55,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 13:32:55,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531863979] [2022-04-15 13:32:55,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 13:32:55,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244507374] [2022-04-15 13:32:55,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244507374] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 13:32:55,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 13:32:55,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 13:32:55,189 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 13:32:55,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [619311280] [2022-04-15 13:32:55,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [619311280] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 13:32:55,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 13:32:55,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 13:32:55,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808420819] [2022-04-15 13:32:55,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 13:32:55,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 13:32:55,191 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 13:32:55,191 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:55,202 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:32:55,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 13:32:55,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 13:32:55,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 13:32:55,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-15 13:32:55,204 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:32:55,300 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-15 13:32:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 13:32:55,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 13:32:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 13:32:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2022-04-15 13:32:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2022-04-15 13:32:55,304 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 38 transitions. [2022-04-15 13:32:55,331 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:32:55,332 INFO L225 Difference]: With dead ends: 34 [2022-04-15 13:32:55,332 INFO L226 Difference]: Without dead ends: 30 [2022-04-15 13:32:55,333 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-15 13:32:55,334 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 13:32:55,334 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 77 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 13:32:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-15 13:32:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-15 13:32:55,342 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 13:32:55,342 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-04-15 13:32:55,343 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-04-15 13:32:55,343 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-04-15 13:32:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:32:55,345 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-15 13:32:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-15 13:32:55,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:32:55,346 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:32:55,346 INFO L74 IsIncluded]: Start isIncluded. First operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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 30 states. [2022-04-15 13:32:55,346 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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 30 states. [2022-04-15 13:32:55,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:32:55,348 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-15 13:32:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-15 13:32:55,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:32:55,349 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:32:55,349 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 13:32:55,349 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 13:32:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-04-15 13:32:55,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-04-15 13:32:55,351 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 17 [2022-04-15 13:32:55,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 13:32:55,351 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-04-15 13:32:55,351 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 13:32:55,351 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 30 states and 32 transitions. [2022-04-15 13:32:55,378 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:32:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-15 13:32:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-15 13:32:55,379 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 13:32:55,379 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, 1] [2022-04-15 13:32:55,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-15 13:32:55,596 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 [2022-04-15 13:32:55,600 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 13:32:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 13:32:55,600 INFO L85 PathProgramCache]: Analyzing trace with hash 311787922, now seen corresponding path program 1 times [2022-04-15 13:32:55,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 13:32:55,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1325320428] [2022-04-15 13:42:34,852 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 13:42:34,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1454367253, now seen corresponding path program 1 times [2022-04-15 13:42:34,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 13:42:34,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554689270] [2022-04-15 13:42:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 13:42:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 13:42:34,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 13:42:34,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678580260] [2022-04-15 13:42:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 13:42:34,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 13:42:34,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 13:42:34,864 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) [2022-04-15 13:42:34,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 13:42:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-15 13:42:34,893 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-15 13:42:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-15 13:42:34,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-15 13:42:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash 311787922, now seen corresponding path program 2 times [2022-04-15 13:42:34,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 13:42:34,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891785529] [2022-04-15 13:42:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 13:42:34,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 13:42:34,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 13:42:34,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528741969] [2022-04-15 13:42:34,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 13:42:34,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 13:42:34,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 13:42:34,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 13:42:34,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-15 13:42:35,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 13:42:35,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 13:42:35,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-15 13:42:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 13:42:35,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 13:42:35,429 INFO L272 TraceCheckUtils]: 0: Hoare triple {474#true} call ULTIMATE.init(); {474#true} is VALID [2022-04-15 13:42:35,429 INFO L290 TraceCheckUtils]: 1: Hoare triple {474#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(9, 2);call #Ultimate.allocInit(12, 3); {474#true} is VALID [2022-04-15 13:42:35,429 INFO L290 TraceCheckUtils]: 2: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-15 13:42:35,429 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {474#true} {474#true} #60#return; {474#true} is VALID [2022-04-15 13:42:35,429 INFO L272 TraceCheckUtils]: 4: Hoare triple {474#true} call #t~ret5 := main(); {474#true} is VALID [2022-04-15 13:42:35,429 INFO L290 TraceCheckUtils]: 5: Hoare triple {474#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {474#true} is VALID [2022-04-15 13:42:35,430 INFO L272 TraceCheckUtils]: 6: Hoare triple {474#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {474#true} is VALID [2022-04-15 13:42:35,430 INFO L290 TraceCheckUtils]: 7: Hoare triple {474#true} ~cond := #in~cond; {474#true} is VALID [2022-04-15 13:42:35,430 INFO L290 TraceCheckUtils]: 8: Hoare triple {474#true} assume !(0 == ~cond); {474#true} is VALID [2022-04-15 13:42:35,430 INFO L290 TraceCheckUtils]: 9: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-15 13:42:35,430 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {474#true} {474#true} #52#return; {474#true} is VALID [2022-04-15 13:42:35,430 INFO L290 TraceCheckUtils]: 11: Hoare triple {474#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {512#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 13:42:35,431 INFO L290 TraceCheckUtils]: 12: Hoare triple {512#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {512#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 13:42:35,431 INFO L272 TraceCheckUtils]: 13: Hoare triple {512#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {474#true} is VALID [2022-04-15 13:42:35,431 INFO L290 TraceCheckUtils]: 14: Hoare triple {474#true} ~cond := #in~cond; {474#true} is VALID [2022-04-15 13:42:35,431 INFO L290 TraceCheckUtils]: 15: Hoare triple {474#true} assume !(0 == ~cond); {474#true} is VALID [2022-04-15 13:42:35,431 INFO L290 TraceCheckUtils]: 16: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-15 13:42:35,432 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {474#true} {512#(and (= main_~x~0 0) (= main_~y~0 0))} #54#return; {512#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 13:42:35,433 INFO L290 TraceCheckUtils]: 18: Hoare triple {512#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {534#(and (= main_~x~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0)) (= main_~y~0 1))} is VALID [2022-04-15 13:42:35,433 INFO L290 TraceCheckUtils]: 19: Hoare triple {534#(and (= main_~x~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0)) (= main_~y~0 1))} assume !false; {534#(and (= main_~x~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0)) (= main_~y~0 1))} is VALID [2022-04-15 13:42:35,434 INFO L272 TraceCheckUtils]: 20: Hoare triple {534#(and (= main_~x~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0)) (= main_~y~0 1))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {541#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 13:42:35,434 INFO L290 TraceCheckUtils]: 21: Hoare triple {541#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {545#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 13:42:35,435 INFO L290 TraceCheckUtils]: 22: Hoare triple {545#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {475#false} is VALID [2022-04-15 13:42:35,435 INFO L290 TraceCheckUtils]: 23: Hoare triple {475#false} assume !false; {475#false} is VALID [2022-04-15 13:42:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 13:42:35,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 13:42:35,550 INFO L290 TraceCheckUtils]: 23: Hoare triple {475#false} assume !false; {475#false} is VALID [2022-04-15 13:42:35,551 INFO L290 TraceCheckUtils]: 22: Hoare triple {545#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {475#false} is VALID [2022-04-15 13:42:35,551 INFO L290 TraceCheckUtils]: 21: Hoare triple {541#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {545#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 13:42:35,552 INFO L272 TraceCheckUtils]: 20: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {541#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 13:42:35,552 INFO L290 TraceCheckUtils]: 19: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} assume !false; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-15 13:42:37,313 INFO L290 TraceCheckUtils]: 18: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-15 13:42:37,314 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {474#true} {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} #54#return; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-15 13:42:37,314 INFO L290 TraceCheckUtils]: 16: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-15 13:42:37,314 INFO L290 TraceCheckUtils]: 15: Hoare triple {474#true} assume !(0 == ~cond); {474#true} is VALID [2022-04-15 13:42:37,314 INFO L290 TraceCheckUtils]: 14: Hoare triple {474#true} ~cond := #in~cond; {474#true} is VALID [2022-04-15 13:42:37,314 INFO L272 TraceCheckUtils]: 13: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {474#true} is VALID [2022-04-15 13:42:37,315 INFO L290 TraceCheckUtils]: 12: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} assume !false; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-15 13:42:37,315 INFO L290 TraceCheckUtils]: 11: Hoare triple {474#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-15 13:42:37,315 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {474#true} {474#true} #52#return; {474#true} is VALID [2022-04-15 13:42:37,316 INFO L290 TraceCheckUtils]: 9: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-15 13:42:37,316 INFO L290 TraceCheckUtils]: 8: Hoare triple {474#true} assume !(0 == ~cond); {474#true} is VALID [2022-04-15 13:42:37,316 INFO L290 TraceCheckUtils]: 7: Hoare triple {474#true} ~cond := #in~cond; {474#true} is VALID [2022-04-15 13:42:37,316 INFO L272 TraceCheckUtils]: 6: Hoare triple {474#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {474#true} is VALID [2022-04-15 13:42:37,316 INFO L290 TraceCheckUtils]: 5: Hoare triple {474#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {474#true} is VALID [2022-04-15 13:42:37,316 INFO L272 TraceCheckUtils]: 4: Hoare triple {474#true} call #t~ret5 := main(); {474#true} is VALID [2022-04-15 13:42:37,316 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {474#true} {474#true} #60#return; {474#true} is VALID [2022-04-15 13:42:37,317 INFO L290 TraceCheckUtils]: 2: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-15 13:42:37,317 INFO L290 TraceCheckUtils]: 1: Hoare triple {474#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(9, 2);call #Ultimate.allocInit(12, 3); {474#true} is VALID [2022-04-15 13:42:37,317 INFO L272 TraceCheckUtils]: 0: Hoare triple {474#true} call ULTIMATE.init(); {474#true} is VALID [2022-04-15 13:42:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-15 13:42:37,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 13:42:37,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891785529] [2022-04-15 13:42:37,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 13:42:37,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528741969] [2022-04-15 13:42:37,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528741969] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-15 13:42:37,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-15 13:42:37,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-15 13:42:37,318 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 13:42:37,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1325320428] [2022-04-15 13:42:37,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1325320428] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 13:42:37,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 13:42:37,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 13:42:37,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801446754] [2022-04-15 13:42:37,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 13:42:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-15 13:42:37,319 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 13:42:37,319 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 13:42:39,584 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 22 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-15 13:42:39,584 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 13:42:39,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 13:42:39,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 13:42:39,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-15 13:42:39,587 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 13:42:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:42:39,695 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-04-15 13:42:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 13:42:39,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-15 13:42:39,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 13:42:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 13:42:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-15 13:42:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 13:42:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-15 13:42:39,698 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 30 transitions. [2022-04-15 13:42:40,283 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:42:40,284 INFO L225 Difference]: With dead ends: 36 [2022-04-15 13:42:40,285 INFO L226 Difference]: Without dead ends: 32 [2022-04-15 13:42:40,285 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-15 13:42:40,286 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 13:42:40,286 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 67 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 13:42:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-15 13:42:40,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-15 13:42:40,299 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 13:42:40,300 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 13:42:40,301 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 13:42:40,301 INFO L87 Difference]: Start difference. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 13:42:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:42:40,304 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-04-15 13:42:40,304 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-04-15 13:42:40,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:42:40,308 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:42:40,308 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 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 32 states. [2022-04-15 13:42:40,308 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 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 32 states. [2022-04-15 13:42:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 13:42:40,310 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-04-15 13:42:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-04-15 13:42:40,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 13:42:40,310 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 13:42:40,310 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 13:42:40,310 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 13:42:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 13:42:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-04-15 13:42:40,311 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 24 [2022-04-15 13:42:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 13:42:40,312 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-04-15 13:42:40,312 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 13:42:40,312 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 33 transitions. [2022-04-15 13:42:40,688 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 13:42:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-04-15 13:42:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-15 13:42:40,689 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 13:42:40,689 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 13:42:40,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-15 13:42:40,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-15 13:42:41,090 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,SelfDestructingSolverStorable3,SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 13:42:41,090 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 13:42:41,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 13:42:41,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1106328449, now seen corresponding path program 1 times [2022-04-15 13:42:41,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 13:42:41,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [134076899]