/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 14:47:56,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 14:47:56,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 14:47:56,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-27 14:47:56,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 14:47:56,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 14:47:56,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 14:47:56,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-04-27 14:47:56,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 14:47:56,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 14:47:56,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-27 14:47:56,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-27 14:47:56,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-27 14:47:56,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-27 14:47:56,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-27 14:47:56,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-27 14:47:56,767 INFO L138 SettingsManager]: * Use SBE=true [2022-04-27 14:47:56,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 14:47:56,768 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 14:47:56,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 14:47:56,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 14:47:56,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 14:47:56,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 14:47:56,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 14:47:56,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 14:47:56,768 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 14:47:56,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 14:47:56,769 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 14:47:56,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 14:47:56,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 14:47:56,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 14:47:56,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 14:47:56,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 14:47:56,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 14:47:56,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-27 14:47:56,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-27 14:47:56,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 14:47:56,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-27 14:47:56,771 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-04-27 14:47:56,771 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-27 14:47:56,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-27 14:47:56,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 14:47:57,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 14:47:57,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 14:47:57,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 14:47:57,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 14:47:57,060 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 14:47:57,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound1.c [2022-04-27 14:47:57,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fba8b24/1d149e02e474470895ef5a02d6743b52/FLAG923ba3b26 [2022-04-27 14:47:57,532 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 14:47:57,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound1.c [2022-04-27 14:47:57,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fba8b24/1d149e02e474470895ef5a02d6743b52/FLAG923ba3b26 [2022-04-27 14:47:57,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fba8b24/1d149e02e474470895ef5a02d6743b52 [2022-04-27 14:47:57,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 14:47:57,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-27 14:47:57,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 14:47:57,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 14:47:57,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 14:47:57,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e65c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57, skipping insertion in model container [2022-04-27 14:47:57,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 14:47:57,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 14:47:57,771 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/ps6-ll_unwindbound1.c[458,471] [2022-04-27 14:47:57,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 14:47:57,815 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 14:47:57,830 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/ps6-ll_unwindbound1.c[458,471] [2022-04-27 14:47:57,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 14:47:57,868 INFO L208 MainTranslator]: Completed translation [2022-04-27 14:47:57,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57 WrapperNode [2022-04-27 14:47:57,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 14:47:57,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 14:47:57,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 14:47:57,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 14:47:57,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 14:47:57,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 14:47:57,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 14:47:57,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 14:47:57,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57" (1/1) ... [2022-04-27 14:47:57,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 14:47:57,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:47:57,948 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) [2022-04-27 14:47:57,974 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 [2022-04-27 14:47:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 14:47:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 14:47:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 14:47:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 14:47:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 14:47:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 14:47:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 14:47:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 14:47:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 14:47:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 14:47:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-27 14:47:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 14:47:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 14:47:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 14:47:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 14:47:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 14:47:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 14:47:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 14:47:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 14:47:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 14:47:58,056 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 14:47:58,058 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 14:47:58,185 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 14:47:58,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 14:47:58,192 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 14:47:58,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 02:47:58 BoogieIcfgContainer [2022-04-27 14:47:58,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 14:47:58,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 14:47:58,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 14:47:58,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 14:47:58,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 02:47:57" (1/3) ... [2022-04-27 14:47:58,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c740f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 02:47:58, skipping insertion in model container [2022-04-27 14:47:58,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:47:57" (2/3) ... [2022-04-27 14:47:58,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c740f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 02:47:58, skipping insertion in model container [2022-04-27 14:47:58,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 02:47:58" (3/3) ... [2022-04-27 14:47:58,219 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound1.c [2022-04-27 14:47:58,231 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-27 14:47:58,231 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 14:47:58,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 14:47:58,318 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c013e93, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5fa75858 [2022-04-27 14:47:58,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 14:47:58,326 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) [2022-04-27 14:47:58,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-27 14:47:58,333 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:47:58,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:47:58,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:47:58,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:47:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash 21872251, now seen corresponding path program 1 times [2022-04-27 14:47:58,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:47:58,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867457659] [2022-04-27 14:47:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:47:58,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:47:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:47:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 14:47:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:47:58,579 INFO L290 TraceCheckUtils]: 0: Hoare triple {41#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {32#true} is VALID [2022-04-27 14:47:58,580 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-27 14:47:58,580 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-27 14:47:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-27 14:47:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:47:58,593 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-27 14:47:58,594 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-27 14:47:58,595 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-27 14:47:58,595 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-27 14:47:58,597 INFO L272 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {41#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 14:47:58,597 INFO L290 TraceCheckUtils]: 1: Hoare triple {41#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {32#true} is VALID [2022-04-27 14:47:58,598 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-27 14:47:58,598 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-27 14:47:58,598 INFO L272 TraceCheckUtils]: 4: Hoare triple {32#true} call #t~ret6 := main(); {32#true} is VALID [2022-04-27 14:47:58,598 INFO L290 TraceCheckUtils]: 5: Hoare triple {32#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; {32#true} is VALID [2022-04-27 14:47:58,599 INFO L272 TraceCheckUtils]: 6: Hoare triple {32#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {32#true} is VALID [2022-04-27 14:47:58,599 INFO L290 TraceCheckUtils]: 7: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-27 14:47:58,599 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-27 14:47:58,600 INFO L290 TraceCheckUtils]: 9: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-27 14:47:58,600 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-27 14:47:58,600 INFO L290 TraceCheckUtils]: 11: Hoare triple {33#false} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {33#false} is VALID [2022-04-27 14:47:58,600 INFO L290 TraceCheckUtils]: 12: Hoare triple {33#false} assume !true; {33#false} is VALID [2022-04-27 14:47:58,601 INFO L272 TraceCheckUtils]: 13: Hoare triple {33#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {33#false} is VALID [2022-04-27 14:47:58,601 INFO L290 TraceCheckUtils]: 14: Hoare triple {33#false} ~cond := #in~cond; {33#false} is VALID [2022-04-27 14:47:58,601 INFO L290 TraceCheckUtils]: 15: Hoare triple {33#false} assume 0 == ~cond; {33#false} is VALID [2022-04-27 14:47:58,601 INFO L290 TraceCheckUtils]: 16: Hoare triple {33#false} assume !false; {33#false} is VALID [2022-04-27 14:47:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:47:58,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:47:58,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867457659] [2022-04-27 14:47:58,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867457659] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 14:47:58,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 14:47:58,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 14:47:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756830416] [2022-04-27 14:47:58,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:47:58,612 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 [2022-04-27 14:47:58,613 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:47:58,617 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) [2022-04-27 14:47:58,648 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:47:58,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 14:47:58,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:47:58,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 14:47:58,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 14:47:58,674 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 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) [2022-04-27 14:47:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:47:58,985 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-04-27 14:47:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 14:47:58,986 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 [2022-04-27 14:47:58,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:47:58,987 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) [2022-04-27 14:47:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-04-27 14:47:58,995 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) [2022-04-27 14:47:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-04-27 14:47:59,000 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 65 transitions. [2022-04-27 14:47:59,084 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:47:59,091 INFO L225 Difference]: With dead ends: 50 [2022-04-27 14:47:59,091 INFO L226 Difference]: Without dead ends: 25 [2022-04-27 14:47:59,094 INFO L412 NwaCegarLoop]: 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 [2022-04-27 14:47:59,097 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-27 14:47:59,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-27 14:47:59,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-27 14:47:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-04-27 14:47:59,124 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:47:59,124 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-04-27 14:47:59,125 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-04-27 14:47:59,125 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-04-27 14:47:59,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:47:59,129 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-27 14:47:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-27 14:47:59,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:47:59,130 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:47:59,131 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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 25 states. [2022-04-27 14:47:59,131 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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 25 states. [2022-04-27 14:47:59,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:47:59,134 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-27 14:47:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-27 14:47:59,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:47:59,135 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:47:59,135 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:47:59,135 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:47:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-04-27 14:47:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-04-27 14:47:59,139 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2022-04-27 14:47:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:47:59,140 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-04-27 14:47:59,141 INFO L496 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) [2022-04-27 14:47:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-27 14:47:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-27 14:47:59,141 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:47:59,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:47:59,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 14:47:59,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:47:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:47:59,143 INFO L85 PathProgramCache]: Analyzing trace with hash -119968982, now seen corresponding path program 1 times [2022-04-27 14:47:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:47:59,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022223558] [2022-04-27 14:47:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:47:59,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:47:59,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:47:59,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062164266] [2022-04-27 14:47:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:47:59,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:47:59,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:47:59,166 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) [2022-04-27 14:47:59,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-27 14:47:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:47:59,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-27 14:47:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:47:59,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 14:47:59,460 INFO L272 TraceCheckUtils]: 0: Hoare triple {196#true} call ULTIMATE.init(); {196#true} is VALID [2022-04-27 14:47:59,463 INFO L290 TraceCheckUtils]: 1: Hoare triple {196#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);~counter~0 := 0; {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,464 INFO L290 TraceCheckUtils]: 2: Hoare triple {204#(<= ~counter~0 0)} assume true; {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,465 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {204#(<= ~counter~0 0)} {196#true} #61#return; {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,465 INFO L272 TraceCheckUtils]: 4: Hoare triple {204#(<= ~counter~0 0)} call #t~ret6 := main(); {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,466 INFO L290 TraceCheckUtils]: 5: Hoare triple {204#(<= ~counter~0 0)} 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; {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,467 INFO L272 TraceCheckUtils]: 6: Hoare triple {204#(<= ~counter~0 0)} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,468 INFO L290 TraceCheckUtils]: 7: Hoare triple {204#(<= ~counter~0 0)} ~cond := #in~cond; {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,468 INFO L290 TraceCheckUtils]: 8: Hoare triple {204#(<= ~counter~0 0)} assume !(0 == ~cond); {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,469 INFO L290 TraceCheckUtils]: 9: Hoare triple {204#(<= ~counter~0 0)} assume true; {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,470 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {204#(<= ~counter~0 0)} {204#(<= ~counter~0 0)} #53#return; {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,470 INFO L290 TraceCheckUtils]: 11: Hoare triple {204#(<= ~counter~0 0)} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {204#(<= ~counter~0 0)} is VALID [2022-04-27 14:47:59,471 INFO L290 TraceCheckUtils]: 12: Hoare triple {204#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {238#(<= |main_#t~post5| 0)} is VALID [2022-04-27 14:47:59,472 INFO L290 TraceCheckUtils]: 13: Hoare triple {238#(<= |main_#t~post5| 0)} assume !(#t~post5 < 1);havoc #t~post5; {197#false} is VALID [2022-04-27 14:47:59,472 INFO L272 TraceCheckUtils]: 14: Hoare triple {197#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {197#false} is VALID [2022-04-27 14:47:59,472 INFO L290 TraceCheckUtils]: 15: Hoare triple {197#false} ~cond := #in~cond; {197#false} is VALID [2022-04-27 14:47:59,472 INFO L290 TraceCheckUtils]: 16: Hoare triple {197#false} assume 0 == ~cond; {197#false} is VALID [2022-04-27 14:47:59,472 INFO L290 TraceCheckUtils]: 17: Hoare triple {197#false} assume !false; {197#false} is VALID [2022-04-27 14:47:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:47:59,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 14:47:59,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:47:59,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022223558] [2022-04-27 14:47:59,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 14:47:59,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062164266] [2022-04-27 14:47:59,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062164266] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 14:47:59,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 14:47:59,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-27 14:47:59,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203248677] [2022-04-27 14:47:59,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:47:59,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-27 14:47:59,477 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:47:59,477 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:47:59,495 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:47:59,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-27 14:47:59,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:47:59,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-27 14:47:59,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 14:47:59,499 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:47:59,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:47:59,611 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-27 14:47:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-27 14:47:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-27 14:47:59,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:47:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:47:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-27 14:47:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:47:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-27 14:47:59,620 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 38 transitions. [2022-04-27 14:47:59,658 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:47:59,660 INFO L225 Difference]: With dead ends: 34 [2022-04-27 14:47:59,660 INFO L226 Difference]: Without dead ends: 26 [2022-04-27 14:47:59,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 14:47:59,663 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 14:47:59,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 14:47:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-27 14:47:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-04-27 14:47:59,680 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:47:59,680 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-04-27 14:47:59,681 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-04-27 14:47:59,681 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-04-27 14:47:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:47:59,684 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-27 14:47:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-27 14:47:59,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:47:59,684 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:47:59,685 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-27 14:47:59,685 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-27 14:47:59,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:47:59,687 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-27 14:47:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-27 14:47:59,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:47:59,688 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:47:59,688 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:47:59,688 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:47:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-04-27 14:47:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-04-27 14:47:59,691 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2022-04-27 14:47:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:47:59,691 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-04-27 14:47:59,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:47:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-27 14:47:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-27 14:47:59,692 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:47:59,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:47:59,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-27 14:47:59,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:47:59,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:47:59,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:47:59,904 INFO L85 PathProgramCache]: Analyzing trace with hash -118181522, now seen corresponding path program 1 times [2022-04-27 14:47:59,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:47:59,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189779260] [2022-04-27 14:47:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:47:59,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:47:59,918 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:47:59,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222731324] [2022-04-27 14:47:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:47:59,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:47:59,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:47:59,920 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) [2022-04-27 14:47:59,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-27 14:47:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:47:59,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-27 14:47:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:48:00,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 14:48:00,139 INFO L272 TraceCheckUtils]: 0: Hoare triple {392#true} call ULTIMATE.init(); {392#true} is VALID [2022-04-27 14:48:00,139 INFO L290 TraceCheckUtils]: 1: Hoare triple {392#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);~counter~0 := 0; {392#true} is VALID [2022-04-27 14:48:00,139 INFO L290 TraceCheckUtils]: 2: Hoare triple {392#true} assume true; {392#true} is VALID [2022-04-27 14:48:00,140 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {392#true} {392#true} #61#return; {392#true} is VALID [2022-04-27 14:48:00,140 INFO L272 TraceCheckUtils]: 4: Hoare triple {392#true} call #t~ret6 := main(); {392#true} is VALID [2022-04-27 14:48:00,140 INFO L290 TraceCheckUtils]: 5: Hoare triple {392#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; {392#true} is VALID [2022-04-27 14:48:00,140 INFO L272 TraceCheckUtils]: 6: Hoare triple {392#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {392#true} is VALID [2022-04-27 14:48:00,144 INFO L290 TraceCheckUtils]: 7: Hoare triple {392#true} ~cond := #in~cond; {392#true} is VALID [2022-04-27 14:48:00,144 INFO L290 TraceCheckUtils]: 8: Hoare triple {392#true} assume !(0 == ~cond); {392#true} is VALID [2022-04-27 14:48:00,145 INFO L290 TraceCheckUtils]: 9: Hoare triple {392#true} assume true; {392#true} is VALID [2022-04-27 14:48:00,145 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {392#true} {392#true} #53#return; {392#true} is VALID [2022-04-27 14:48:00,146 INFO L290 TraceCheckUtils]: 11: Hoare triple {392#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {430#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:48:00,147 INFO L290 TraceCheckUtils]: 12: Hoare triple {430#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {430#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:48:00,149 INFO L290 TraceCheckUtils]: 13: Hoare triple {430#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 1);havoc #t~post5; {430#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:48:00,151 INFO L272 TraceCheckUtils]: 14: Hoare triple {430#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {440#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 14:48:00,151 INFO L290 TraceCheckUtils]: 15: Hoare triple {440#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {444#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 14:48:00,152 INFO L290 TraceCheckUtils]: 16: Hoare triple {444#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {393#false} is VALID [2022-04-27 14:48:00,152 INFO L290 TraceCheckUtils]: 17: Hoare triple {393#false} assume !false; {393#false} is VALID [2022-04-27 14:48:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:48:00,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 14:48:00,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:48:00,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189779260] [2022-04-27 14:48:00,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 14:48:00,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222731324] [2022-04-27 14:48:00,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222731324] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 14:48:00,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 14:48:00,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-27 14:48:00,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660402480] [2022-04-27 14:48:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:48:00,154 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, (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 18 [2022-04-27 14:48:00,157 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:48:00,158 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, (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) [2022-04-27 14:48:00,174 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:48:00,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 14:48:00,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:48:00,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 14:48:00,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-27 14:48:00,176 INFO L87 Difference]: Start difference. First operand 26 states and 29 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, (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) [2022-04-27 14:48:00,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:48:00,329 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-27 14:48:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 14:48:00,330 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, (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 18 [2022-04-27 14:48:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:48:00,330 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, (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) [2022-04-27 14:48:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-27 14:48:00,333 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, (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) [2022-04-27 14:48:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-27 14:48:00,335 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 41 transitions. [2022-04-27 14:48:00,380 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:48:00,381 INFO L225 Difference]: With dead ends: 36 [2022-04-27 14:48:00,381 INFO L226 Difference]: Without dead ends: 32 [2022-04-27 14:48:00,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-27 14:48:00,383 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 14:48:00,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 87 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 14:48:00,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-27 14:48:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-27 14:48:00,391 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:48:00,392 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2022-04-27 14:48:00,392 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2022-04-27 14:48:00,392 INFO L87 Difference]: Start difference. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2022-04-27 14:48:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:48:00,395 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-27 14:48:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-27 14:48:00,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:48:00,395 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:48:00,396 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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 32 states. [2022-04-27 14:48:00,396 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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 32 states. [2022-04-27 14:48:00,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:48:00,398 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-27 14:48:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-27 14:48:00,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:48:00,399 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:48:00,399 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:48:00,399 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:48:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2022-04-27 14:48:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-04-27 14:48:00,401 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2022-04-27 14:48:00,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:48:00,401 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-04-27 14:48:00,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (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) [2022-04-27 14:48:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-27 14:48:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-27 14:48:00,402 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:48:00,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:48:00,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-27 14:48:00,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-27 14:48:00,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:48:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:48:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1364840471, now seen corresponding path program 1 times [2022-04-27 14:48:00,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:48:00,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759738276] [2022-04-27 14:48:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:48:00,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:48:00,628 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:48:00,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196858211] [2022-04-27 14:48:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:48:00,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:48:00,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:48:00,631 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) [2022-04-27 14:48:00,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-27 14:48:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:48:00,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-27 14:48:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:48:00,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 14:48:00,874 INFO L272 TraceCheckUtils]: 0: Hoare triple {614#true} call ULTIMATE.init(); {614#true} is VALID [2022-04-27 14:48:00,875 INFO L290 TraceCheckUtils]: 1: Hoare triple {614#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);~counter~0 := 0; {614#true} is VALID [2022-04-27 14:48:00,875 INFO L290 TraceCheckUtils]: 2: Hoare triple {614#true} assume true; {614#true} is VALID [2022-04-27 14:48:00,875 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {614#true} {614#true} #61#return; {614#true} is VALID [2022-04-27 14:48:00,875 INFO L272 TraceCheckUtils]: 4: Hoare triple {614#true} call #t~ret6 := main(); {614#true} is VALID [2022-04-27 14:48:00,876 INFO L290 TraceCheckUtils]: 5: Hoare triple {614#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; {614#true} is VALID [2022-04-27 14:48:00,876 INFO L272 TraceCheckUtils]: 6: Hoare triple {614#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {614#true} is VALID [2022-04-27 14:48:00,876 INFO L290 TraceCheckUtils]: 7: Hoare triple {614#true} ~cond := #in~cond; {614#true} is VALID [2022-04-27 14:48:00,877 INFO L290 TraceCheckUtils]: 8: Hoare triple {614#true} assume !(0 == ~cond); {614#true} is VALID [2022-04-27 14:48:00,877 INFO L290 TraceCheckUtils]: 9: Hoare triple {614#true} assume true; {614#true} is VALID [2022-04-27 14:48:00,877 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {614#true} {614#true} #53#return; {614#true} is VALID [2022-04-27 14:48:00,878 INFO L290 TraceCheckUtils]: 11: Hoare triple {614#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {652#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:48:00,878 INFO L290 TraceCheckUtils]: 12: Hoare triple {652#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {652#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:48:00,879 INFO L290 TraceCheckUtils]: 13: Hoare triple {652#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 1);havoc #t~post5; {652#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:48:00,879 INFO L272 TraceCheckUtils]: 14: Hoare triple {652#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {614#true} is VALID [2022-04-27 14:48:00,882 INFO L290 TraceCheckUtils]: 15: Hoare triple {614#true} ~cond := #in~cond; {614#true} is VALID [2022-04-27 14:48:00,882 INFO L290 TraceCheckUtils]: 16: Hoare triple {614#true} assume !(0 == ~cond); {614#true} is VALID [2022-04-27 14:48:00,888 INFO L290 TraceCheckUtils]: 17: Hoare triple {614#true} assume true; {614#true} is VALID [2022-04-27 14:48:00,889 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {614#true} {652#(and (= main_~x~0 0) (= main_~y~0 0))} #55#return; {652#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:48:00,890 INFO L290 TraceCheckUtils]: 19: Hoare triple {652#(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 * ~y~0 + ~x~0; {677#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 (* main_~y~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0))))} is VALID [2022-04-27 14:48:00,890 INFO L290 TraceCheckUtils]: 20: Hoare triple {677#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 (* main_~y~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0))))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {677#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 (* main_~y~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0))))} is VALID [2022-04-27 14:48:00,891 INFO L290 TraceCheckUtils]: 21: Hoare triple {677#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 (* main_~y~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0))))} assume !(#t~post5 < 1);havoc #t~post5; {677#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 (* main_~y~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0))))} is VALID [2022-04-27 14:48:00,892 INFO L272 TraceCheckUtils]: 22: Hoare triple {677#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 (* main_~y~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0))))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {687#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 14:48:00,892 INFO L290 TraceCheckUtils]: 23: Hoare triple {687#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {691#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 14:48:00,893 INFO L290 TraceCheckUtils]: 24: Hoare triple {691#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {615#false} is VALID [2022-04-27 14:48:00,893 INFO L290 TraceCheckUtils]: 25: Hoare triple {615#false} assume !false; {615#false} is VALID [2022-04-27 14:48:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:48:00,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 14:48:01,119 INFO L290 TraceCheckUtils]: 25: Hoare triple {615#false} assume !false; {615#false} is VALID [2022-04-27 14:48:01,120 INFO L290 TraceCheckUtils]: 24: Hoare triple {691#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {615#false} is VALID [2022-04-27 14:48:01,120 INFO L290 TraceCheckUtils]: 23: Hoare triple {687#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {691#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 14:48:01,122 INFO L272 TraceCheckUtils]: 22: Hoare triple {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {687#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 14:48:01,122 INFO L290 TraceCheckUtils]: 21: Hoare triple {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} assume !(#t~post5 < 1);havoc #t~post5; {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:48:01,123 INFO L290 TraceCheckUtils]: 20: Hoare triple {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:48:01,170 INFO L290 TraceCheckUtils]: 19: Hoare triple {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~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 * ~y~0 + ~x~0; {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:48:01,171 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {614#true} {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} #55#return; {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:48:01,171 INFO L290 TraceCheckUtils]: 17: Hoare triple {614#true} assume true; {614#true} is VALID [2022-04-27 14:48:01,171 INFO L290 TraceCheckUtils]: 16: Hoare triple {614#true} assume !(0 == ~cond); {614#true} is VALID [2022-04-27 14:48:01,171 INFO L290 TraceCheckUtils]: 15: Hoare triple {614#true} ~cond := #in~cond; {614#true} is VALID [2022-04-27 14:48:01,171 INFO L272 TraceCheckUtils]: 14: Hoare triple {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {614#true} is VALID [2022-04-27 14:48:01,172 INFO L290 TraceCheckUtils]: 13: Hoare triple {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} assume !!(#t~post5 < 1);havoc #t~post5; {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:48:01,172 INFO L290 TraceCheckUtils]: 12: Hoare triple {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:48:01,173 INFO L290 TraceCheckUtils]: 11: Hoare triple {614#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {707#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:48:01,173 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {614#true} {614#true} #53#return; {614#true} is VALID [2022-04-27 14:48:01,173 INFO L290 TraceCheckUtils]: 9: Hoare triple {614#true} assume true; {614#true} is VALID [2022-04-27 14:48:01,173 INFO L290 TraceCheckUtils]: 8: Hoare triple {614#true} assume !(0 == ~cond); {614#true} is VALID [2022-04-27 14:48:01,173 INFO L290 TraceCheckUtils]: 7: Hoare triple {614#true} ~cond := #in~cond; {614#true} is VALID [2022-04-27 14:48:01,174 INFO L272 TraceCheckUtils]: 6: Hoare triple {614#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {614#true} is VALID [2022-04-27 14:48:01,174 INFO L290 TraceCheckUtils]: 5: Hoare triple {614#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; {614#true} is VALID [2022-04-27 14:48:01,174 INFO L272 TraceCheckUtils]: 4: Hoare triple {614#true} call #t~ret6 := main(); {614#true} is VALID [2022-04-27 14:48:01,174 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {614#true} {614#true} #61#return; {614#true} is VALID [2022-04-27 14:48:01,174 INFO L290 TraceCheckUtils]: 2: Hoare triple {614#true} assume true; {614#true} is VALID [2022-04-27 14:48:01,174 INFO L290 TraceCheckUtils]: 1: Hoare triple {614#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);~counter~0 := 0; {614#true} is VALID [2022-04-27 14:48:01,175 INFO L272 TraceCheckUtils]: 0: Hoare triple {614#true} call ULTIMATE.init(); {614#true} is VALID [2022-04-27 14:48:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-27 14:48:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:48:01,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759738276] [2022-04-27 14:48:01,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 14:48:01,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196858211] [2022-04-27 14:48:01,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196858211] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-27 14:48:01,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-27 14:48:01,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-27 14:48:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744747365] [2022-04-27 14:48:01,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:48:01,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 26 [2022-04-27 14:48:01,177 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:48:01,177 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-04-27 14:48:01,350 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:48:01,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 14:48:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:48:01,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 14:48:01,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-27 14:48:01,351 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-04-27 14:48:01,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:48:01,494 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-04-27 14:48:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 14:48:01,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 26 [2022-04-27 14:48:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:48:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-04-27 14:48:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-27 14:48:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-04-27 14:48:01,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-27 14:48:01,498 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 32 transitions. [2022-04-27 14:48:01,664 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:48:01,666 INFO L225 Difference]: With dead ends: 38 [2022-04-27 14:48:01,666 INFO L226 Difference]: Without dead ends: 34 [2022-04-27 14:48:01,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-27 14:48:01,667 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 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 [2022-04-27 14:48:01,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 14:48:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-27 14:48:01,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-27 14:48:01,680 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:48:01,680 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-04-27 14:48:01,680 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-04-27 14:48:01,681 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-04-27 14:48:01,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:48:01,683 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-27 14:48:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-27 14:48:01,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:48:01,683 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:48:01,684 INFO L74 IsIncluded]: Start isIncluded. First operand has 34 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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 34 states. [2022-04-27 14:48:01,684 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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 34 states. [2022-04-27 14:48:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:48:01,686 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-27 14:48:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-27 14:48:01,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:48:01,687 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:48:01,687 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:48:01,687 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:48:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-04-27 14:48:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2022-04-27 14:48:01,689 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 26 [2022-04-27 14:48:01,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:48:01,689 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2022-04-27 14:48:01,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-04-27 14:48:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-27 14:48:01,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-27 14:48:01,690 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:48:01,690 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:48:01,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-27 14:48:01,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:48:01,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:48:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:48:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1589507521, now seen corresponding path program 1 times [2022-04-27 14:48:01,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:48:01,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930694761] [2022-04-27 14:48:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:48:01,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:48:01,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:48:01,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641823025] [2022-04-27 14:48:01,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:48:01,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:48:01,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:48:01,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-27 14:48:01,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-27 14:48:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 14:48:01,980 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-27 14:48:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 14:48:02,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-27 14:48:02,008 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-27 14:48:02,009 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 14:48:02,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-27 14:48:02,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:48:02,231 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-27 14:48:02,234 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 14:48:02,255 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-04-27 14:48:02,256 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 14:48:02,257 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-27 14:48:02,258 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-27 14:48:02,258 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-27 14:48:02,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 02:48:02 BoogieIcfgContainer [2022-04-27 14:48:02,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 14:48:02,260 INFO L158 Benchmark]: Toolchain (without parser) took 4701.78ms. Allocated memory was 185.6MB in the beginning and 314.6MB in the end (delta: 129.0MB). Free memory was 130.1MB in the beginning and 256.7MB in the end (delta: -126.6MB). Peak memory consumption was 3.4MB. Max. memory is 8.0GB. [2022-04-27 14:48:02,260 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 185.6MB. Free memory is still 146.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 14:48:02,261 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.69ms. Allocated memory was 185.6MB in the beginning and 314.6MB in the end (delta: 129.0MB). Free memory was 129.9MB in the beginning and 289.8MB in the end (delta: -159.9MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-04-27 14:48:02,261 INFO L158 Benchmark]: Boogie Preprocessor took 40.69ms. Allocated memory is still 314.6MB. Free memory was 289.8MB in the beginning and 288.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 14:48:02,262 INFO L158 Benchmark]: RCFGBuilder took 281.59ms. Allocated memory is still 314.6MB. Free memory was 288.3MB in the beginning and 277.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 14:48:02,262 INFO L158 Benchmark]: TraceAbstraction took 4063.68ms. Allocated memory is still 314.6MB. Free memory was 276.6MB in the beginning and 256.7MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-04-27 14:48:02,268 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 0.46ms. Allocated memory is still 185.6MB. Free memory is still 146.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.69ms. Allocated memory was 185.6MB in the beginning and 314.6MB in the end (delta: 129.0MB). Free memory was 129.9MB in the beginning and 289.8MB in the end (delta: -159.9MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.69ms. Allocated memory is still 314.6MB. Free memory was 289.8MB in the beginning and 288.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 281.59ms. Allocated memory is still 314.6MB. Free memory was 288.3MB in the beginning and 277.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4063.68ms. Allocated memory is still 314.6MB. Free memory was 276.6MB in the beginning and 256.7MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. 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 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [\old(counter)=5, counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L7] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L22] RET assume_abort_if_not(k <= 256) VAL [\old(counter)=0, counter=0, k=2] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [\old(counter)=0, c=0, counter=0, k=2, x=0, y=0] [L28] EXPR counter++ VAL [\old(counter)=0, c=0, counter=1, counter++=0, k=2, x=0, y=0] [L28] COND TRUE counter++<1 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=0, counter=1, k=2, x=0, y=0] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=1, counter=1, k=2, x=1, y=1] [L28] EXPR counter++ VAL [\old(counter)=0, c=1, counter=2, counter++=1, k=2, x=1, y=1] [L28] COND FALSE !(counter++<1) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=1, counter=2, k=2, x=1, y=1] [L40] CALL __VERIFIER_assert(k*y == y*y) VAL [\old(cond)=0, \old(counter)=0, counter=2] [L10] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] [L12] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 257 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 155 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 74 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 102 mSDtfsCounter, 74 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=4, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 459 SizeOfPredicates, 3 NumberOfNonLiveVariables, 261 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-27 14:48:02,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...