/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/ps4-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 15:17:57,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 15:17:57,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 15:17:57,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-07 15:17:57,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 15:17:57,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 15:17:57,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 15:17:57,173 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 [2022-04-07 15:17:57,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 15:17:57,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 15:17:57,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-07 15:17:57,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-07 15:17:57,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-07 15:17:57,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-07 15:17:57,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-07 15:17:57,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-07 15:17:57,205 INFO L138 SettingsManager]: * Use SBE=true [2022-04-07 15:17:57,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 15:17:57,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-07 15:17:57,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 15:17:57,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-07 15:17:57,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 15:17:57,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 15:17:57,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 15:17:57,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 15:17:57,207 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-07 15:17:57,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 15:17:57,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 15:17:57,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 15:17:57,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 15:17:57,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 15:17:57,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 15:17:57,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 15:17:57,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 15:17:57,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-07 15:17:57,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-07 15:17:57,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-07 15:17:57,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-07 15:17:57,210 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-07 15:17:57,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-07 15:17:57,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 15:17:57,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 15:17:57,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 15:17:57,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 15:17:57,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 15:17:57,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 15:17:57,427 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 15:17:57,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound1.c [2022-04-07 15:17:57,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2fe3f3e1/9b50586baba840c9928a0290af20b673/FLAG6e6d74aaa [2022-04-07 15:17:57,790 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 15:17:57,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound1.c [2022-04-07 15:17:57,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2fe3f3e1/9b50586baba840c9928a0290af20b673/FLAG6e6d74aaa [2022-04-07 15:17:58,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2fe3f3e1/9b50586baba840c9928a0290af20b673 [2022-04-07 15:17:58,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 15:17:58,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-07 15:17:58,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 15:17:58,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 15:17:58,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 15:17:58,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab5fd39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58, skipping insertion in model container [2022-04-07 15:17:58,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 15:17:58,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 15:17:58,378 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/ps4-ll_unwindbound1.c[458,471] [2022-04-07 15:17:58,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 15:17:58,399 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 15:17:58,409 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/ps4-ll_unwindbound1.c[458,471] [2022-04-07 15:17:58,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 15:17:58,425 INFO L208 MainTranslator]: Completed translation [2022-04-07 15:17:58,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58 WrapperNode [2022-04-07 15:17:58,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 15:17:58,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 15:17:58,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 15:17:58,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 15:17:58,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 15:17:58,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 15:17:58,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 15:17:58,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 15:17:58,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58" (1/1) ... [2022-04-07 15:17:58,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 15:17:58,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 15:17:58,488 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) [2022-04-07 15:17:58,503 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 [2022-04-07 15:17:58,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 15:17:58,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 15:17:58,536 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 15:17:58,537 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-07 15:17:58,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-07 15:17:58,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 15:17:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 15:17:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 15:17:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 15:17:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 15:17:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-07 15:17:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-07 15:17:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-07 15:17:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 15:17:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 15:17:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 15:17:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 15:17:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 15:17:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 15:17:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 15:17:58,593 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 15:17:58,595 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 15:17:58,696 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 15:17:58,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 15:17:58,702 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-07 15:17:58,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 03:17:58 BoogieIcfgContainer [2022-04-07 15:17:58,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 15:17:58,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 15:17:58,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 15:17:58,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 15:17:58,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 03:17:58" (1/3) ... [2022-04-07 15:17:58,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6348610c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 03:17:58, skipping insertion in model container [2022-04-07 15:17:58,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 03:17:58" (2/3) ... [2022-04-07 15:17:58,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6348610c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 03:17:58, skipping insertion in model container [2022-04-07 15:17:58,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 03:17:58" (3/3) ... [2022-04-07 15:17:58,710 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound1.c [2022-04-07 15:17:58,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-07 15:17:58,714 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 15:17:58,749 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 15:17:58,754 INFO L340 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 [2022-04-07 15:17:58,754 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 15:17:58,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-07 15:17:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-07 15:17:58,773 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 15:17:58,773 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 15:17:58,773 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 15:17:58,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 15:17:58,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2133548928, now seen corresponding path program 1 times [2022-04-07 15:17:58,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 15:17:58,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115792129] [2022-04-07 15:17:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 15:17:58,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 15:17:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 15:17:59,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 15:17:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 15:17:59,056 INFO L290 TraceCheckUtils]: 0: Hoare triple {31#(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; {26#true} is VALID [2022-04-07 15:17:59,056 INFO L290 TraceCheckUtils]: 1: Hoare triple {26#true} assume true; {26#true} is VALID [2022-04-07 15:17:59,056 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} #57#return; {26#true} is VALID [2022-04-07 15:17:59,061 INFO L272 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {31#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-07 15:17:59,061 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#(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; {26#true} is VALID [2022-04-07 15:17:59,061 INFO L290 TraceCheckUtils]: 2: Hoare triple {26#true} assume true; {26#true} is VALID [2022-04-07 15:17:59,062 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26#true} {26#true} #57#return; {26#true} is VALID [2022-04-07 15:17:59,062 INFO L272 TraceCheckUtils]: 4: Hoare triple {26#true} call #t~ret6 := main(); {26#true} is VALID [2022-04-07 15:17:59,063 INFO L290 TraceCheckUtils]: 5: Hoare triple {26#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;~y~0 := 0;~x~0 := 0;~c~0 := 0; {26#true} is VALID [2022-04-07 15:17:59,063 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#true} assume !true; {27#false} is VALID [2022-04-07 15:17:59,063 INFO L272 TraceCheckUtils]: 7: Hoare triple {27#false} call __VERIFIER_assert((if 0 == ~k~0 * ~y~0 - ~y~0 * ~y~0 then 1 else 0)); {27#false} is VALID [2022-04-07 15:17:59,064 INFO L290 TraceCheckUtils]: 8: Hoare triple {27#false} ~cond := #in~cond; {27#false} is VALID [2022-04-07 15:17:59,064 INFO L290 TraceCheckUtils]: 9: Hoare triple {27#false} assume 0 == ~cond; {27#false} is VALID [2022-04-07 15:17:59,064 INFO L290 TraceCheckUtils]: 10: Hoare triple {27#false} assume !false; {27#false} is VALID [2022-04-07 15:17:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 15:17:59,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 15:17:59,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115792129] [2022-04-07 15:17:59,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115792129] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 15:17:59,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 15:17:59,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 15:17:59,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616113475] [2022-04-07 15:17:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 15:17:59,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-07 15:17:59,076 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 15:17:59,079 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,105 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 15:17:59,105 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 15:17:59,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 15:17:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 15:17:59,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 15:17:59,130 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 15:17:59,281 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2022-04-07 15:17:59,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 15:17:59,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-07 15:17:59,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 15:17:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-04-07 15:17:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-04-07 15:17:59,296 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 55 transitions. [2022-04-07 15:17:59,365 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 15:17:59,372 INFO L225 Difference]: With dead ends: 41 [2022-04-07 15:17:59,373 INFO L226 Difference]: Without dead ends: 19 [2022-04-07 15:17:59,375 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 15:17:59,378 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 15:17:59,379 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 15:17:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-07 15:17:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-04-07 15:17:59,402 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 15:17:59,403 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 15:17:59,403 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 15:17:59,404 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 15:17:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 15:17:59,407 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-04-07 15:17:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-04-07 15:17:59,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 15:17:59,408 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 15:17:59,408 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 19 states. [2022-04-07 15:17:59,408 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 19 states. [2022-04-07 15:17:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 15:17:59,411 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-04-07 15:17:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-04-07 15:17:59,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 15:17:59,412 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 15:17:59,412 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 15:17:59,412 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 15:17:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 15:17:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-04-07 15:17:59,418 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2022-04-07 15:17:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 15:17:59,418 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-04-07 15:17:59,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,419 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-04-07 15:17:59,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-07 15:17:59,419 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 15:17:59,419 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 15:17:59,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 15:17:59,420 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 15:17:59,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 15:17:59,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2118701623, now seen corresponding path program 1 times [2022-04-07 15:17:59,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 15:17:59,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165361428] [2022-04-07 15:17:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 15:17:59,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 15:17:59,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 15:17:59,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743614258] [2022-04-07 15:17:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 15:17:59,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 15:17:59,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 15:17:59,459 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) [2022-04-07 15:17:59,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-07 15:17:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 15:17:59,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 15:17:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 15:17:59,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 15:17:59,659 INFO L272 TraceCheckUtils]: 0: Hoare triple {155#true} call ULTIMATE.init(); {155#true} is VALID [2022-04-07 15:17:59,660 INFO L290 TraceCheckUtils]: 1: Hoare triple {155#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; {163#(<= ~counter~0 0)} is VALID [2022-04-07 15:17:59,660 INFO L290 TraceCheckUtils]: 2: Hoare triple {163#(<= ~counter~0 0)} assume true; {163#(<= ~counter~0 0)} is VALID [2022-04-07 15:17:59,661 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {163#(<= ~counter~0 0)} {155#true} #57#return; {163#(<= ~counter~0 0)} is VALID [2022-04-07 15:17:59,661 INFO L272 TraceCheckUtils]: 4: Hoare triple {163#(<= ~counter~0 0)} call #t~ret6 := main(); {163#(<= ~counter~0 0)} is VALID [2022-04-07 15:17:59,662 INFO L290 TraceCheckUtils]: 5: Hoare triple {163#(<= ~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;~y~0 := 0;~x~0 := 0;~c~0 := 0; {163#(<= ~counter~0 0)} is VALID [2022-04-07 15:17:59,662 INFO L290 TraceCheckUtils]: 6: Hoare triple {163#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {179#(<= |main_#t~post5| 0)} is VALID [2022-04-07 15:17:59,663 INFO L290 TraceCheckUtils]: 7: Hoare triple {179#(<= |main_#t~post5| 0)} assume !(#t~post5 < 1);havoc #t~post5; {156#false} is VALID [2022-04-07 15:17:59,663 INFO L272 TraceCheckUtils]: 8: Hoare triple {156#false} call __VERIFIER_assert((if 0 == ~k~0 * ~y~0 - ~y~0 * ~y~0 then 1 else 0)); {156#false} is VALID [2022-04-07 15:17:59,664 INFO L290 TraceCheckUtils]: 9: Hoare triple {156#false} ~cond := #in~cond; {156#false} is VALID [2022-04-07 15:17:59,664 INFO L290 TraceCheckUtils]: 10: Hoare triple {156#false} assume 0 == ~cond; {156#false} is VALID [2022-04-07 15:17:59,664 INFO L290 TraceCheckUtils]: 11: Hoare triple {156#false} assume !false; {156#false} is VALID [2022-04-07 15:17:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 15:17:59,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 15:17:59,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 15:17:59,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165361428] [2022-04-07 15:17:59,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 15:17:59,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743614258] [2022-04-07 15:17:59,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743614258] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 15:17:59,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 15:17:59,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 15:17:59,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163722876] [2022-04-07 15:17:59,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 15:17:59,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 15:17:59,671 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 15:17:59,671 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,682 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 15:17:59,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 15:17:59,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 15:17:59,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 15:17:59,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 15:17:59,685 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 15:17:59,737 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-04-07 15:17:59,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 15:17:59,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 15:17:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 15:17:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2022-04-07 15:17:59,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2022-04-07 15:17:59,743 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 32 transitions. [2022-04-07 15:17:59,770 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 15:17:59,772 INFO L225 Difference]: With dead ends: 28 [2022-04-07 15:17:59,772 INFO L226 Difference]: Without dead ends: 20 [2022-04-07 15:17:59,772 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 15:17:59,775 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 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 [2022-04-07 15:17:59,775 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 15:17:59,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-04-07 15:17:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-04-07 15:17:59,785 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 15:17:59,786 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 15:17:59,787 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 15:17:59,787 INFO L87 Difference]: Start difference. First operand 20 states. Second operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 15:17:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 15:17:59,790 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-04-07 15:17:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-04-07 15:17:59,791 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 15:17:59,791 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 15:17:59,792 INFO L74 IsIncluded]: Start isIncluded. First operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 20 states. [2022-04-07 15:17:59,792 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 20 states. [2022-04-07 15:17:59,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 15:17:59,797 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-04-07 15:17:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-04-07 15:17:59,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 15:17:59,798 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 15:17:59,798 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 15:17:59,798 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 15:17:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 15:17:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-04-07 15:17:59,801 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2022-04-07 15:17:59,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 15:17:59,801 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-04-07 15:17:59,802 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:17:59,802 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-04-07 15:17:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-07 15:17:59,802 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 15:17:59,803 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 15:17:59,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-07 15:18:00,019 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 15:18:00,020 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 15:18:00,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 15:18:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2116914163, now seen corresponding path program 1 times [2022-04-07 15:18:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 15:18:00,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190855281] [2022-04-07 15:18:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 15:18:00,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 15:18:00,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 15:18:00,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207744632] [2022-04-07 15:18:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 15:18:00,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 15:18:00,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 15:18:00,039 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) [2022-04-07 15:18:00,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-07 15:18:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 15:18:00,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 15:18:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 15:18:00,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 15:18:00,177 INFO L272 TraceCheckUtils]: 0: Hoare triple {305#true} call ULTIMATE.init(); {305#true} is VALID [2022-04-07 15:18:00,178 INFO L290 TraceCheckUtils]: 1: Hoare triple {305#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; {305#true} is VALID [2022-04-07 15:18:00,178 INFO L290 TraceCheckUtils]: 2: Hoare triple {305#true} assume true; {305#true} is VALID [2022-04-07 15:18:00,178 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {305#true} {305#true} #57#return; {305#true} is VALID [2022-04-07 15:18:00,178 INFO L272 TraceCheckUtils]: 4: Hoare triple {305#true} call #t~ret6 := main(); {305#true} is VALID [2022-04-07 15:18:00,179 INFO L290 TraceCheckUtils]: 5: Hoare triple {305#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;~y~0 := 0;~x~0 := 0;~c~0 := 0; {325#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 15:18:00,180 INFO L290 TraceCheckUtils]: 6: Hoare triple {325#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {325#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 15:18:00,181 INFO L290 TraceCheckUtils]: 7: Hoare triple {325#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 1);havoc #t~post5; {325#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 15:18:00,182 INFO L272 TraceCheckUtils]: 8: Hoare triple {325#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 4 * ~x~0 - ~y~0 * ~y~0 * ~y~0 * ~y~0 - 2 * ~y~0 * ~y~0 * ~y~0 - ~y~0 * ~y~0 then 1 else 0)); {335#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-07 15:18:00,184 INFO L290 TraceCheckUtils]: 9: Hoare triple {335#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {339#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 15:18:00,185 INFO L290 TraceCheckUtils]: 10: Hoare triple {339#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {306#false} is VALID [2022-04-07 15:18:00,185 INFO L290 TraceCheckUtils]: 11: Hoare triple {306#false} assume !false; {306#false} is VALID [2022-04-07 15:18:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 15:18:00,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 15:18:00,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 15:18:00,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190855281] [2022-04-07 15:18:00,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 15:18:00,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207744632] [2022-04-07 15:18:00,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207744632] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 15:18:00,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 15:18:00,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 15:18:00,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176063382] [2022-04-07 15:18:00,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 15:18:00,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 15:18:00,187 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 15:18:00,188 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:18:00,198 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 15:18:00,199 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 15:18:00,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 15:18:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 15:18:00,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-07 15:18:00,200 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:18:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 15:18:00,343 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-04-07 15:18:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 15:18:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 15:18:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 15:18:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:18:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2022-04-07 15:18:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:18:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2022-04-07 15:18:00,348 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 35 transitions. [2022-04-07 15:18:00,386 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 15:18:00,387 INFO L225 Difference]: With dead ends: 30 [2022-04-07 15:18:00,387 INFO L226 Difference]: Without dead ends: 26 [2022-04-07 15:18:00,388 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-07 15:18:00,389 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 15:18:00,389 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 15:18:00,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-07 15:18:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-04-07 15:18:00,396 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 15:18:00,396 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) [2022-04-07 15:18:00,396 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) [2022-04-07 15:18:00,397 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) [2022-04-07 15:18:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 15:18:00,399 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-07 15:18:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-07 15:18:00,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 15:18:00,399 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 15:18:00,400 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. [2022-04-07 15:18:00,400 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. [2022-04-07 15:18:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 15:18:00,402 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-07 15:18:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-07 15:18:00,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 15:18:00,402 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 15:18:00,402 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 15:18:00,403 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 15:18:00,403 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) [2022-04-07 15:18:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-04-07 15:18:00,404 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 12 [2022-04-07 15:18:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 15:18:00,405 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-04-07 15:18:00,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 15:18:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-07 15:18:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-07 15:18:00,405 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 15:18:00,406 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 15:18:00,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-07 15:18:00,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-07 15:18:00,620 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 15:18:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 15:18:00,620 INFO L85 PathProgramCache]: Analyzing trace with hash -263585780, now seen corresponding path program 1 times [2022-04-07 15:18:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 15:18:00,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165757694] [2022-04-07 15:18:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 15:18:00,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 15:18:00,636 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 15:18:00,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371169016] [2022-04-07 15:18:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 15:18:00,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 15:18:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 15:18:00,637 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) [2022-04-07 15:18:00,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-07 15:18:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 15:18:00,692 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-07 15:18:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 15:18:00,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-07 15:18:00,734 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-07 15:18:00,735 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 15:18:00,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-07 15:18:00,969 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 15:18:00,972 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-07 15:18:00,974 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-07 15:18:00,990 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-07 15:18:00,990 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-07 15:18:00,990 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-07 15:18:00,990 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-07 15:18:00,990 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-07 15:18:00,990 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-07 15:18:00,990 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-07 15:18:00,990 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L27-4 has no Hoare annotation [2022-04-07 15:18:00,991 WARN L170 areAnnotationChecker]: L27-4 has no Hoare annotation [2022-04-07 15:18:00,992 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2022-04-07 15:18:00,997 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2022-04-07 15:18:00,997 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-07 15:18:00,997 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-07 15:18:00,997 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2022-04-07 15:18:00,997 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-07 15:18:00,998 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-07 15:18:00,998 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. [2022-04-07 15:18:00,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 03:18:00 BoogieIcfgContainer [2022-04-07 15:18:00,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-07 15:18:01,001 INFO L158 Benchmark]: Toolchain (without parser) took 2783.86ms. Allocated memory was 178.3MB in the beginning and 300.9MB in the end (delta: 122.7MB). Free memory was 148.9MB in the beginning and 271.9MB in the end (delta: -123.0MB). Peak memory consumption was 112.9MB. Max. memory is 8.0GB. [2022-04-07 15:18:01,001 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 134.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 15:18:01,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.52ms. Allocated memory was 178.3MB in the beginning and 300.9MB in the end (delta: 122.7MB). Free memory was 148.7MB in the beginning and 270.5MB in the end (delta: -121.8MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. [2022-04-07 15:18:01,002 INFO L158 Benchmark]: Boogie Preprocessor took 24.96ms. Allocated memory is still 300.9MB. Free memory was 270.5MB in the beginning and 269.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-07 15:18:01,002 INFO L158 Benchmark]: RCFGBuilder took 251.59ms. Allocated memory is still 300.9MB. Free memory was 269.0MB in the beginning and 257.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-07 15:18:01,002 INFO L158 Benchmark]: TraceAbstraction took 2294.23ms. Allocated memory is still 300.9MB. Free memory was 256.9MB in the beginning and 271.9MB in the end (delta: -15.0MB). Peak memory consumption was 98.8MB. Max. memory is 8.0GB. [2022-04-07 15:18:01,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 134.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.52ms. Allocated memory was 178.3MB in the beginning and 300.9MB in the end (delta: 122.7MB). Free memory was 148.7MB in the beginning and 270.5MB in the end (delta: -121.8MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.96ms. Allocated memory is still 300.9MB. Free memory was 270.5MB in the beginning and 269.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 251.59ms. Allocated memory is still 300.9MB. Free memory was 269.0MB in the beginning and 257.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2294.23ms. Allocated memory is still 300.9MB. Free memory was 256.9MB in the beginning and 271.9MB in the end (delta: -15.0MB). Peak memory consumption was 98.8MB. 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() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [\old(counter)=0, c=0, counter=0, k=2, x=0, y=0] [L27] EXPR counter++ VAL [\old(counter)=0, c=0, counter=1, counter++=0, k=2, x=0, y=0] [L27] COND TRUE counter++<1 [L28] CALL __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 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] [L28] RET __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [\old(counter)=0, c=0, counter=1, k=2, x=0, y=0] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [\old(counter)=0, c=1, counter=1, k=2, x=1, y=1] [L27] EXPR counter++ VAL [\old(counter)=0, c=1, counter=2, counter++=1, k=2, x=1, y=1] [L27] COND FALSE !(counter++<1) [L37] CALL __VERIFIER_assert(k*y - (y*y) == 0) 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 144 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 63 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 2 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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! [2022-04-07 15:18:01,038 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...