/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-14 22:53:37,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-14 22:53:37,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-14 22:53:37,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-14 22:53:37,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-14 22:53:37,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-14 22:53:37,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-14 22:53:37,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-14 22:53:37,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-14 22:53:37,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-14 22:53:37,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-14 22:53:37,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-14 22:53:37,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-14 22:53:37,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-14 22:53:37,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-14 22:53:37,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-14 22:53:37,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-14 22:53:37,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-14 22:53:37,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-14 22:53:37,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-14 22:53:37,401 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-14 22:53:37,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-14 22:53:37,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-14 22:53:37,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-14 22:53:37,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-14 22:53:37,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-14 22:53:37,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-14 22:53:37,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-14 22:53:37,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-14 22:53:37,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-14 22:53:37,423 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-14 22:53:37,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-14 22:53:37,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-14 22:53:37,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-14 22:53:37,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-14 22:53:37,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-14 22:53:37,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-14 22:53:37,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-14 22:53:37,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-14 22:53:37,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 22:53:37,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-14 22:53:37,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-14 22:53:37,427 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-14 22:53:37,427 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-14 22:53:37,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-14 22:53:37,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-14 22:53:37,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-14 22:53:37,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-14 22:53:37,615 INFO L275 PluginConnector]: CDTParser initialized [2022-04-14 22:53:37,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound20.c [2022-04-14 22:53:37,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/437bfd4d7/44694e8ebc24489da0018a0876f7b9e2/FLAGa919a66f5 [2022-04-14 22:53:38,000 INFO L306 CDTParser]: Found 1 translation units. [2022-04-14 22:53:38,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound20.c [2022-04-14 22:53:38,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/437bfd4d7/44694e8ebc24489da0018a0876f7b9e2/FLAGa919a66f5 [2022-04-14 22:53:38,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/437bfd4d7/44694e8ebc24489da0018a0876f7b9e2 [2022-04-14 22:53:38,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-14 22:53:38,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-14 22:53:38,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-14 22:53:38,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-14 22:53:38,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-14 22:53:38,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b171a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38, skipping insertion in model container [2022-04-14 22:53:38,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-14 22:53:38,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-14 22:53:38,164 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/ps3-ll_unwindbound20.c[458,471] [2022-04-14 22:53:38,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 22:53:38,186 INFO L203 MainTranslator]: Completed pre-run [2022-04-14 22:53:38,193 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/ps3-ll_unwindbound20.c[458,471] [2022-04-14 22:53:38,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 22:53:38,204 INFO L208 MainTranslator]: Completed translation [2022-04-14 22:53:38,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38 WrapperNode [2022-04-14 22:53:38,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-14 22:53:38,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-14 22:53:38,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-14 22:53:38,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-14 22:53:38,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-14 22:53:38,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-14 22:53:38,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-14 22:53:38,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-14 22:53:38,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 22:53:38,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:53:38,245 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) [2022-04-14 22:53:38,247 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 [2022-04-14 22:53:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-14 22:53:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-14 22:53:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-14 22:53:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-14 22:53:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-14 22:53:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-14 22:53:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-14 22:53:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-14 22:53:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-14 22:53:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-14 22:53:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-14 22:53:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-14 22:53:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-14 22:53:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-14 22:53:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-14 22:53:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-14 22:53:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-14 22:53:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-14 22:53:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-14 22:53:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-14 22:53:38,332 INFO L234 CfgBuilder]: Building ICFG [2022-04-14 22:53:38,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-14 22:53:38,421 INFO L275 CfgBuilder]: Performing block encoding [2022-04-14 22:53:38,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-14 22:53:38,432 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-14 22:53:38,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 10:53:38 BoogieIcfgContainer [2022-04-14 22:53:38,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-14 22:53:38,434 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-14 22:53:38,434 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-14 22:53:38,435 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-14 22:53:38,437 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 10:53:38" (1/1) ... [2022-04-14 22:53:38,438 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-14 22:53:38,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 10:53:38 BasicIcfg [2022-04-14 22:53:38,451 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-14 22:53:38,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-14 22:53:38,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-14 22:53:38,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-14 22:53:38,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 10:53:38" (1/4) ... [2022-04-14 22:53:38,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e2d35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 10:53:38, skipping insertion in model container [2022-04-14 22:53:38,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 10:53:38" (2/4) ... [2022-04-14 22:53:38,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e2d35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 10:53:38, skipping insertion in model container [2022-04-14 22:53:38,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 10:53:38" (3/4) ... [2022-04-14 22:53:38,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e2d35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 10:53:38, skipping insertion in model container [2022-04-14 22:53:38,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 10:53:38" (4/4) ... [2022-04-14 22:53:38,455 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound20.cJordan [2022-04-14 22:53:38,458 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-14 22:53:38,458 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-14 22:53:38,484 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-14 22:53:38,488 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-14 22:53:38,488 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-14 22:53:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-14 22:53:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-14 22:53:38,517 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:53:38,517 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:53:38,518 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:53:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:53:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2022-04-14 22:53:38,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:53:38,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256497291] [2022-04-14 22:53:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:53:38,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:53:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 22:53:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:38,720 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {25#true} is VALID [2022-04-14 22:53:38,720 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:53:38,720 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:53:38,736 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 22:53:38,737 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {25#true} is VALID [2022-04-14 22:53:38,737 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:53:38,737 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:53:38,737 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-14 22:53:38,738 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {25#true} is VALID [2022-04-14 22:53:38,738 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} [63] L27-3-->L27-4: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-14 22:53:38,738 INFO L272 TraceCheckUtils]: 7: Hoare triple {26#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 1) (* (* (* v_main_~y~0_9 2) v_main_~y~0_9) v_main_~y~0_9)) (* (- 1) v_main_~y~0_9) (* v_main_~x~0_9 6) (* (- 1) (* v_main_~y~0_9 (* v_main_~y~0_9 3)))) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {26#false} is VALID [2022-04-14 22:53:38,739 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {26#false} is VALID [2022-04-14 22:53:38,739 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-14 22:53:38,739 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-14 22:53:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:53:38,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:53:38,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256497291] [2022-04-14 22:53:38,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256497291] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 22:53:38,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 22:53:38,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-14 22:53:38,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925852081] [2022-04-14 22:53:38,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 22:53:38,745 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 [2022-04-14 22:53:38,746 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:53:38,748 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) [2022-04-14 22:53:38,778 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:38,778 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-14 22:53:38,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:53:38,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-14 22:53:38,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-14 22:53:38,807 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2022-04-14 22:53:38,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:38,915 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-14 22:53:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-14 22:53:38,915 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 [2022-04-14 22:53:38,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:53:38,916 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) [2022-04-14 22:53:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-04-14 22:53:38,920 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) [2022-04-14 22:53:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-04-14 22:53:38,922 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 28 transitions. [2022-04-14 22:53:38,949 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:38,954 INFO L225 Difference]: With dead ends: 23 [2022-04-14 22:53:38,955 INFO L226 Difference]: Without dead ends: 18 [2022-04-14 22:53:38,956 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 [2022-04-14 22:53:38,958 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 22:53:38,959 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:53:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-14 22:53:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-04-14 22:53:38,976 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:53:38,976 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:38,977 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:38,977 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:38,980 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-14 22:53:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-14 22:53:38,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:38,980 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:38,981 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-14 22:53:38,981 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-14 22:53:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:38,983 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-14 22:53:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-14 22:53:38,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:38,983 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:38,983 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:53:38,984 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:53:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-14 22:53:38,986 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-14 22:53:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:53:38,986 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-14 22:53:38,986 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) [2022-04-14 22:53:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-14 22:53:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-14 22:53:38,987 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:53:38,987 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:53:38,987 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-14 22:53:38,987 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:53:38,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:53:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2022-04-14 22:53:38,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:53:38,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994866216] [2022-04-14 22:53:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:53:38,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:53:39,001 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 22:53:39,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613715572] [2022-04-14 22:53:39,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:53:39,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:53:39,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:53:39,003 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) [2022-04-14 22:53:39,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-14 22:53:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:39,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-14 22:53:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:39,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 22:53:39,195 INFO L272 TraceCheckUtils]: 0: Hoare triple {109#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {109#true} is VALID [2022-04-14 22:53:39,197 INFO L290 TraceCheckUtils]: 1: Hoare triple {109#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:39,197 INFO L290 TraceCheckUtils]: 2: Hoare triple {117#(<= ~counter~0 0)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:39,198 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {117#(<= ~counter~0 0)} {109#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:39,198 INFO L272 TraceCheckUtils]: 4: Hoare triple {117#(<= ~counter~0 0)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:39,198 INFO L290 TraceCheckUtils]: 5: Hoare triple {117#(<= ~counter~0 0)} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {117#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:39,200 INFO L290 TraceCheckUtils]: 6: Hoare triple {117#(<= ~counter~0 0)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {133#(<= |main_#t~post5| 0)} is VALID [2022-04-14 22:53:39,200 INFO L290 TraceCheckUtils]: 7: Hoare triple {133#(<= |main_#t~post5| 0)} [66] L27-1-->L27-4: Formula: (not (< |v_main_#t~post5_2| 20)) InVars {main_#t~post5=|v_main_#t~post5_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {110#false} is VALID [2022-04-14 22:53:39,201 INFO L272 TraceCheckUtils]: 8: Hoare triple {110#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 1) (* (* (* v_main_~y~0_9 2) v_main_~y~0_9) v_main_~y~0_9)) (* (- 1) v_main_~y~0_9) (* v_main_~x~0_9 6) (* (- 1) (* v_main_~y~0_9 (* v_main_~y~0_9 3)))) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {110#false} is VALID [2022-04-14 22:53:39,201 INFO L290 TraceCheckUtils]: 9: Hoare triple {110#false} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {110#false} is VALID [2022-04-14 22:53:39,202 INFO L290 TraceCheckUtils]: 10: Hoare triple {110#false} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {110#false} is VALID [2022-04-14 22:53:39,202 INFO L290 TraceCheckUtils]: 11: Hoare triple {110#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {110#false} is VALID [2022-04-14 22:53:39,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:53:39,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-14 22:53:39,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:53:39,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994866216] [2022-04-14 22:53:39,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 22:53:39,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613715572] [2022-04-14 22:53:39,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613715572] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 22:53:39,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 22:53:39,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 22:53:39,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610266004] [2022-04-14 22:53:39,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 22:53:39,210 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 [2022-04-14 22:53:39,210 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:53:39,211 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) [2022-04-14 22:53:39,222 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:39,222 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 22:53:39,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:53:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 22:53:39,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 22:53:39,223 INFO L87 Difference]: Start difference. First operand 17 states and 19 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) [2022-04-14 22:53:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:39,264 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-14 22:53:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 22:53:39,264 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 [2022-04-14 22:53:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:53:39,265 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) [2022-04-14 22:53:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-04-14 22:53:39,272 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) [2022-04-14 22:53:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-04-14 22:53:39,273 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 22 transitions. [2022-04-14 22:53:39,291 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:39,292 INFO L225 Difference]: With dead ends: 19 [2022-04-14 22:53:39,292 INFO L226 Difference]: Without dead ends: 19 [2022-04-14 22:53:39,292 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 [2022-04-14 22:53:39,294 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 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 [2022-04-14 22:53:39,295 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:53:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-14 22:53:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-14 22:53:39,299 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:53:39,299 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:39,300 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:39,300 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:39,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:39,302 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-14 22:53:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-14 22:53:39,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:39,303 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:39,304 INFO L74 IsIncluded]: Start isIncluded. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-14 22:53:39,304 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-14 22:53:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:39,305 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-14 22:53:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-14 22:53:39,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:39,306 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:39,307 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:53:39,329 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:53:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-14 22:53:39,330 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-14 22:53:39,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:53:39,331 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-14 22:53:39,331 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) [2022-04-14 22:53:39,331 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-14 22:53:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-14 22:53:39,331 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:53:39,332 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:53:39,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-14 22:53:39,532 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 [2022-04-14 22:53:39,532 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:53:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:53:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2022-04-14 22:53:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:53:39,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329467943] [2022-04-14 22:53:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:53:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:53:39,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 22:53:39,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581327300] [2022-04-14 22:53:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:53:39,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:53:39,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:53:39,549 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) [2022-04-14 22:53:39,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-14 22:53:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:39,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-14 22:53:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:39,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 22:53:39,699 INFO L272 TraceCheckUtils]: 0: Hoare triple {224#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-14 22:53:39,699 INFO L290 TraceCheckUtils]: 1: Hoare triple {224#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {224#true} is VALID [2022-04-14 22:53:39,700 INFO L290 TraceCheckUtils]: 2: Hoare triple {224#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-14 22:53:39,700 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {224#true} {224#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-14 22:53:39,700 INFO L272 TraceCheckUtils]: 4: Hoare triple {224#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-14 22:53:39,700 INFO L290 TraceCheckUtils]: 5: Hoare triple {224#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {244#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:53:39,701 INFO L290 TraceCheckUtils]: 6: Hoare triple {244#(and (= main_~x~0 0) (= main_~y~0 0))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {244#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:53:39,701 INFO L290 TraceCheckUtils]: 7: Hoare triple {244#(and (= main_~x~0 0) (= main_~y~0 0))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {244#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:53:39,702 INFO L272 TraceCheckUtils]: 8: Hoare triple {244#(and (= main_~x~0 0) (= main_~y~0 0))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {254#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 22:53:39,703 INFO L290 TraceCheckUtils]: 9: Hoare triple {254#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {258#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 22:53:39,704 INFO L290 TraceCheckUtils]: 10: Hoare triple {258#(<= 1 __VERIFIER_assert_~cond)} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {225#false} is VALID [2022-04-14 22:53:39,704 INFO L290 TraceCheckUtils]: 11: Hoare triple {225#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {225#false} is VALID [2022-04-14 22:53:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:53:39,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-14 22:53:39,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:53:39,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329467943] [2022-04-14 22:53:39,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 22:53:39,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581327300] [2022-04-14 22:53:39,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581327300] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 22:53:39,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 22:53:39,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-14 22:53:39,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84059399] [2022-04-14 22:53:39,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 22:53:39,706 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 [2022-04-14 22:53:39,706 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:53:39,706 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) [2022-04-14 22:53:39,716 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:39,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-14 22:53:39,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:53:39,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-14 22:53:39,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-14 22:53:39,718 INFO L87 Difference]: Start difference. First operand 19 states and 21 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) [2022-04-14 22:53:39,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:39,787 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-14 22:53:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-14 22:53:39,787 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 [2022-04-14 22:53:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:53:39,788 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) [2022-04-14 22:53:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-14 22:53:39,791 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) [2022-04-14 22:53:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-14 22:53:39,793 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 30 transitions. [2022-04-14 22:53:39,814 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:39,815 INFO L225 Difference]: With dead ends: 26 [2022-04-14 22:53:39,815 INFO L226 Difference]: Without dead ends: 25 [2022-04-14 22:53:39,815 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 [2022-04-14 22:53:39,816 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 22:53:39,816 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:53:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-14 22:53:39,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-14 22:53:39,818 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:53:39,819 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 22:53:39,819 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 22:53:39,819 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 22:53:39,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:39,820 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-14 22:53:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-14 22:53:39,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:39,821 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:39,821 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-14 22:53:39,821 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-14 22:53:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:39,822 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-14 22:53:39,822 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-14 22:53:39,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:39,822 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:39,823 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:53:39,823 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:53:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 22:53:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-14 22:53:39,824 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-14 22:53:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:53:39,824 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-14 22:53:39,824 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) [2022-04-14 22:53:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-14 22:53:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 22:53:39,825 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:53:39,825 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:53:39,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-14 22:53:40,040 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 [2022-04-14 22:53:40,040 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:53:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:53:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2022-04-14 22:53:40,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:53:40,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647139349] [2022-04-14 22:53:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:53:40,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:53:40,056 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 22:53:40,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537564230] [2022-04-14 22:53:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:53:40,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:53:40,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:53:40,057 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) [2022-04-14 22:53:40,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-14 22:53:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:40,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-14 22:53:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:40,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 22:53:40,233 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-14 22:53:40,234 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:40,235 INFO L290 TraceCheckUtils]: 2: Hoare triple {375#(<= ~counter~0 0)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:40,235 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {375#(<= ~counter~0 0)} {367#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:40,236 INFO L272 TraceCheckUtils]: 4: Hoare triple {375#(<= ~counter~0 0)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:40,237 INFO L290 TraceCheckUtils]: 5: Hoare triple {375#(<= ~counter~0 0)} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {375#(<= ~counter~0 0)} is VALID [2022-04-14 22:53:40,237 INFO L290 TraceCheckUtils]: 6: Hoare triple {375#(<= ~counter~0 0)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:53:40,238 INFO L290 TraceCheckUtils]: 7: Hoare triple {391#(<= ~counter~0 1)} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:53:40,241 INFO L272 TraceCheckUtils]: 8: Hoare triple {391#(<= ~counter~0 1)} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:53:40,241 INFO L290 TraceCheckUtils]: 9: Hoare triple {391#(<= ~counter~0 1)} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:53:40,242 INFO L290 TraceCheckUtils]: 10: Hoare triple {391#(<= ~counter~0 1)} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:53:40,242 INFO L290 TraceCheckUtils]: 11: Hoare triple {391#(<= ~counter~0 1)} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:53:40,246 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {391#(<= ~counter~0 1)} {391#(<= ~counter~0 1)} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:53:40,247 INFO L290 TraceCheckUtils]: 13: Hoare triple {391#(<= ~counter~0 1)} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (= v_main_~x~0_5 (+ v_main_~x~0_6 (* v_main_~y~0_5 v_main_~y~0_5))) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {391#(<= ~counter~0 1)} is VALID [2022-04-14 22:53:40,247 INFO L290 TraceCheckUtils]: 14: Hoare triple {391#(<= ~counter~0 1)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {416#(<= |main_#t~post5| 1)} is VALID [2022-04-14 22:53:40,248 INFO L290 TraceCheckUtils]: 15: Hoare triple {416#(<= |main_#t~post5| 1)} [66] L27-1-->L27-4: Formula: (not (< |v_main_#t~post5_2| 20)) InVars {main_#t~post5=|v_main_#t~post5_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {368#false} is VALID [2022-04-14 22:53:40,248 INFO L272 TraceCheckUtils]: 16: Hoare triple {368#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 1) (* (* (* v_main_~y~0_9 2) v_main_~y~0_9) v_main_~y~0_9)) (* (- 1) v_main_~y~0_9) (* v_main_~x~0_9 6) (* (- 1) (* v_main_~y~0_9 (* v_main_~y~0_9 3)))) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {368#false} is VALID [2022-04-14 22:53:40,248 INFO L290 TraceCheckUtils]: 17: Hoare triple {368#false} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {368#false} is VALID [2022-04-14 22:53:40,248 INFO L290 TraceCheckUtils]: 18: Hoare triple {368#false} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-14 22:53:40,248 INFO L290 TraceCheckUtils]: 19: Hoare triple {368#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-14 22:53:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:53:40,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-14 22:53:40,370 INFO L290 TraceCheckUtils]: 19: Hoare triple {368#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-14 22:53:40,371 INFO L290 TraceCheckUtils]: 18: Hoare triple {368#false} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-14 22:53:40,372 INFO L290 TraceCheckUtils]: 17: Hoare triple {368#false} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {368#false} is VALID [2022-04-14 22:53:40,372 INFO L272 TraceCheckUtils]: 16: Hoare triple {368#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 1) (* (* (* v_main_~y~0_9 2) v_main_~y~0_9) v_main_~y~0_9)) (* (- 1) v_main_~y~0_9) (* v_main_~x~0_9 6) (* (- 1) (* v_main_~y~0_9 (* v_main_~y~0_9 3)))) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {368#false} is VALID [2022-04-14 22:53:40,372 INFO L290 TraceCheckUtils]: 15: Hoare triple {444#(< |main_#t~post5| 20)} [66] L27-1-->L27-4: Formula: (not (< |v_main_#t~post5_2| 20)) InVars {main_#t~post5=|v_main_#t~post5_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {368#false} is VALID [2022-04-14 22:53:40,373 INFO L290 TraceCheckUtils]: 14: Hoare triple {448#(< ~counter~0 20)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {444#(< |main_#t~post5| 20)} is VALID [2022-04-14 22:53:40,373 INFO L290 TraceCheckUtils]: 13: Hoare triple {448#(< ~counter~0 20)} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (= v_main_~x~0_5 (+ v_main_~x~0_6 (* v_main_~y~0_5 v_main_~y~0_5))) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {448#(< ~counter~0 20)} is VALID [2022-04-14 22:53:40,374 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {367#true} {448#(< ~counter~0 20)} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {448#(< ~counter~0 20)} is VALID [2022-04-14 22:53:40,374 INFO L290 TraceCheckUtils]: 11: Hoare triple {367#true} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-14 22:53:40,374 INFO L290 TraceCheckUtils]: 10: Hoare triple {367#true} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-14 22:53:40,374 INFO L290 TraceCheckUtils]: 9: Hoare triple {367#true} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {367#true} is VALID [2022-04-14 22:53:40,374 INFO L272 TraceCheckUtils]: 8: Hoare triple {448#(< ~counter~0 20)} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {367#true} is VALID [2022-04-14 22:53:40,375 INFO L290 TraceCheckUtils]: 7: Hoare triple {448#(< ~counter~0 20)} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {448#(< ~counter~0 20)} is VALID [2022-04-14 22:53:40,375 INFO L290 TraceCheckUtils]: 6: Hoare triple {473#(< ~counter~0 19)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {448#(< ~counter~0 20)} is VALID [2022-04-14 22:53:40,376 INFO L290 TraceCheckUtils]: 5: Hoare triple {473#(< ~counter~0 19)} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {473#(< ~counter~0 19)} is VALID [2022-04-14 22:53:40,376 INFO L272 TraceCheckUtils]: 4: Hoare triple {473#(< ~counter~0 19)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {473#(< ~counter~0 19)} is VALID [2022-04-14 22:53:40,377 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {473#(< ~counter~0 19)} {367#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {473#(< ~counter~0 19)} is VALID [2022-04-14 22:53:40,377 INFO L290 TraceCheckUtils]: 2: Hoare triple {473#(< ~counter~0 19)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {473#(< ~counter~0 19)} is VALID [2022-04-14 22:53:40,378 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {473#(< ~counter~0 19)} is VALID [2022-04-14 22:53:40,378 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-14 22:53:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:53:40,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:53:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647139349] [2022-04-14 22:53:40,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 22:53:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537564230] [2022-04-14 22:53:40,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537564230] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-14 22:53:40,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-14 22:53:40,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-14 22:53:40,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143742554] [2022-04-14 22:53:40,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-14 22:53:40,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-04-14 22:53:40,380 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:53:40,380 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:53:40,405 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:40,405 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-14 22:53:40,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:53:40,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-14 22:53:40,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-14 22:53:40,406 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:53:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:40,518 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-14 22:53:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-14 22:53:40,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-04-14 22:53:40,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:53:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:53:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2022-04-14 22:53:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:53:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2022-04-14 22:53:40,523 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 10 states and 56 transitions. [2022-04-14 22:53:40,561 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:40,562 INFO L225 Difference]: With dead ends: 49 [2022-04-14 22:53:40,562 INFO L226 Difference]: Without dead ends: 49 [2022-04-14 22:53:40,562 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-14 22:53:40,563 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 22:53:40,563 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 72 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:53:40,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-14 22:53:40,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-04-14 22:53:40,566 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:53:40,566 INFO L82 GeneralOperation]: Start isEquivalent. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 22:53:40,566 INFO L74 IsIncluded]: Start isIncluded. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 22:53:40,567 INFO L87 Difference]: Start difference. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 22:53:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:40,569 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-14 22:53:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-04-14 22:53:40,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:40,569 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:40,569 INFO L74 IsIncluded]: Start isIncluded. First operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 49 states. [2022-04-14 22:53:40,570 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 49 states. [2022-04-14 22:53:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:40,571 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-14 22:53:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-04-14 22:53:40,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:40,572 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:40,572 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:53:40,572 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:53:40,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 22:53:40,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-04-14 22:53:40,573 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2022-04-14 22:53:40,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:53:40,574 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-04-14 22:53:40,574 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-14 22:53:40,574 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-04-14 22:53:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 22:53:40,574 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 22:53:40,574 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 22:53:40,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-14 22:53:40,790 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 [2022-04-14 22:53:40,790 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 22:53:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 22:53:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2022-04-14 22:53:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 22:53:40,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368806052] [2022-04-14 22:53:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:53:40,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 22:53:40,803 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 22:53:40,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974955397] [2022-04-14 22:53:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 22:53:40,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:53:40,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 22:53:40,817 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) [2022-04-14 22:53:40,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-14 22:53:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:40,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-14 22:53:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 22:53:40,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 22:53:40,945 INFO L272 TraceCheckUtils]: 0: Hoare triple {692#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:40,946 INFO L290 TraceCheckUtils]: 1: Hoare triple {692#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {692#true} is VALID [2022-04-14 22:53:40,946 INFO L290 TraceCheckUtils]: 2: Hoare triple {692#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:40,946 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {692#true} {692#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:40,946 INFO L272 TraceCheckUtils]: 4: Hoare triple {692#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:40,947 INFO L290 TraceCheckUtils]: 5: Hoare triple {692#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:53:40,947 INFO L290 TraceCheckUtils]: 6: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:53:40,947 INFO L290 TraceCheckUtils]: 7: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:53:40,948 INFO L272 TraceCheckUtils]: 8: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {692#true} is VALID [2022-04-14 22:53:40,948 INFO L290 TraceCheckUtils]: 9: Hoare triple {692#true} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {692#true} is VALID [2022-04-14 22:53:40,948 INFO L290 TraceCheckUtils]: 10: Hoare triple {692#true} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:40,948 INFO L290 TraceCheckUtils]: 11: Hoare triple {692#true} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:40,949 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {692#true} {712#(and (= main_~x~0 0) (= main_~y~0 0))} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 22:53:40,949 INFO L290 TraceCheckUtils]: 13: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (= v_main_~x~0_5 (+ v_main_~x~0_6 (* v_main_~y~0_5 v_main_~y~0_5))) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} is VALID [2022-04-14 22:53:40,950 INFO L290 TraceCheckUtils]: 14: Hoare triple {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} is VALID [2022-04-14 22:53:40,953 INFO L290 TraceCheckUtils]: 15: Hoare triple {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} is VALID [2022-04-14 22:53:40,954 INFO L272 TraceCheckUtils]: 16: Hoare triple {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {747#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 22:53:40,955 INFO L290 TraceCheckUtils]: 17: Hoare triple {747#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {751#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 22:53:40,955 INFO L290 TraceCheckUtils]: 18: Hoare triple {751#(<= 1 __VERIFIER_assert_~cond)} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-14 22:53:40,955 INFO L290 TraceCheckUtils]: 19: Hoare triple {693#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-14 22:53:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 22:53:40,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-14 22:53:41,052 INFO L290 TraceCheckUtils]: 19: Hoare triple {693#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-14 22:53:41,052 INFO L290 TraceCheckUtils]: 18: Hoare triple {751#(<= 1 __VERIFIER_assert_~cond)} [72] L10-->L11: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-14 22:53:41,053 INFO L290 TraceCheckUtils]: 17: Hoare triple {747#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {751#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 22:53:41,054 INFO L272 TraceCheckUtils]: 16: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {747#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 22:53:41,054 INFO L290 TraceCheckUtils]: 15: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-14 22:53:41,054 INFO L290 TraceCheckUtils]: 14: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-14 22:53:51,985 WARN L290 TraceCheckUtils]: 13: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (= v_main_~x~0_5 (+ v_main_~x~0_6 (* v_main_~y~0_5 v_main_~y~0_5))) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is UNKNOWN [2022-04-14 22:53:51,991 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {692#true} {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-14 22:53:51,992 INFO L290 TraceCheckUtils]: 11: Hoare triple {692#true} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:51,992 INFO L290 TraceCheckUtils]: 10: Hoare triple {692#true} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:51,992 INFO L290 TraceCheckUtils]: 9: Hoare triple {692#true} [69] __VERIFIER_assertENTRY-->L10: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {692#true} is VALID [2022-04-14 22:53:51,992 INFO L272 TraceCheckUtils]: 8: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {692#true} is VALID [2022-04-14 22:53:52,003 INFO L290 TraceCheckUtils]: 7: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-14 22:53:52,005 INFO L290 TraceCheckUtils]: 6: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-14 22:53:52,005 INFO L290 TraceCheckUtils]: 5: Hoare triple {692#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-14 22:53:52,005 INFO L272 TraceCheckUtils]: 4: Hoare triple {692#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:52,006 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {692#true} {692#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:52,006 INFO L290 TraceCheckUtils]: 2: Hoare triple {692#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:52,006 INFO L290 TraceCheckUtils]: 1: Hoare triple {692#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {692#true} is VALID [2022-04-14 22:53:52,006 INFO L272 TraceCheckUtils]: 0: Hoare triple {692#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-14 22:53:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-14 22:53:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 22:53:52,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368806052] [2022-04-14 22:53:52,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 22:53:52,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974955397] [2022-04-14 22:53:52,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974955397] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-14 22:53:52,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-14 22:53:52,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-14 22:53:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703289602] [2022-04-14 22:53:52,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 22:53:52,007 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), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-14 22:53:52,007 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 22:53:52,008 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), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:54,090 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 17 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:54,090 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-14 22:53:54,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 22:53:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-14 22:53:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-14 22:53:54,091 INFO L87 Difference]: Start difference. First operand 45 states and 51 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), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:54,149 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-04-14 22:53:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-14 22:53:54,149 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), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-14 22:53:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 22:53:54,150 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), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-04-14 22:53:54,150 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), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-04-14 22:53:54,151 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 18 transitions. [2022-04-14 22:53:56,163 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 17 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-14 22:53:56,163 INFO L225 Difference]: With dead ends: 43 [2022-04-14 22:53:56,163 INFO L226 Difference]: Without dead ends: 0 [2022-04-14 22:53:56,163 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-14 22:53:56,164 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 22:53:56,164 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 22:53:56,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-14 22:53:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-14 22:53:56,165 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 22:53:56,165 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-14 22:53:56,165 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-14 22:53:56,165 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-14 22:53:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:56,165 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-14 22:53:56,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 22:53:56,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:56,165 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:56,165 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-14 22:53:56,165 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-14 22:53:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 22:53:56,165 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-14 22:53:56,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 22:53:56,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:56,166 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 22:53:56,166 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 22:53:56,166 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 22:53:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-14 22:53:56,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-14 22:53:56,166 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-14 22:53:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 22:53:56,166 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-14 22:53:56,166 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 22:53:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 22:53:56,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 22:53:56,168 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-14 22:53:56,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-14 22:53:56,377 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 22:53:56,379 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-14 22:53:56,380 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-14 22:53:56,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 10:53:56 BasicIcfg [2022-04-14 22:53:56,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-14 22:53:56,383 INFO L158 Benchmark]: Toolchain (without parser) took 18368.85ms. Allocated memory was 195.0MB in the beginning and 254.8MB in the end (delta: 59.8MB). Free memory was 145.5MB in the beginning and 115.6MB in the end (delta: 29.9MB). Peak memory consumption was 91.1MB. Max. memory is 8.0GB. [2022-04-14 22:53:56,383 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory was 161.7MB in the beginning and 161.6MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-14 22:53:56,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.52ms. Allocated memory is still 195.0MB. Free memory was 145.4MB in the beginning and 171.4MB in the end (delta: -26.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-14 22:53:56,383 INFO L158 Benchmark]: Boogie Preprocessor took 16.77ms. Allocated memory is still 195.0MB. Free memory was 171.4MB in the beginning and 169.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-14 22:53:56,383 INFO L158 Benchmark]: RCFGBuilder took 210.66ms. Allocated memory is still 195.0MB. Free memory was 169.9MB in the beginning and 158.8MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-14 22:53:56,384 INFO L158 Benchmark]: IcfgTransformer took 16.90ms. Allocated memory is still 195.0MB. Free memory was 158.8MB in the beginning and 157.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-14 22:53:56,384 INFO L158 Benchmark]: TraceAbstraction took 17930.30ms. Allocated memory was 195.0MB in the beginning and 254.8MB in the end (delta: 59.8MB). Free memory was 157.2MB in the beginning and 115.6MB in the end (delta: 41.6MB). Peak memory consumption was 102.9MB. Max. memory is 8.0GB. [2022-04-14 22:53:56,385 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 0.09ms. Allocated memory is still 195.0MB. Free memory was 161.7MB in the beginning and 161.6MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.52ms. Allocated memory is still 195.0MB. Free memory was 145.4MB in the beginning and 171.4MB in the end (delta: -26.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.77ms. Allocated memory is still 195.0MB. Free memory was 171.4MB in the beginning and 169.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 210.66ms. Allocated memory is still 195.0MB. Free memory was 169.9MB in the beginning and 158.8MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 16.90ms. Allocated memory is still 195.0MB. Free memory was 158.8MB in the beginning and 157.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 17930.30ms. Allocated memory was 195.0MB in the beginning and 254.8MB in the end (delta: 59.8MB). Free memory was 157.2MB in the beginning and 115.6MB in the end (delta: 41.6MB). Peak memory consumption was 102.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.9s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 151 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 89 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 27, 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 5 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 11/18 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-14 22:53:56,407 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...