/usr/bin/java -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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/vnew1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 06:15:47,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 06:15:47,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 06:15:47,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 06:15:47,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 06:15:47,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 06:15:47,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 06:15:47,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 06:15:47,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 06:15:47,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 06:15:47,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 06:15:47,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 06:15:47,205 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 06:15:47,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 06:15:47,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 06:15:47,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 06:15:47,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 06:15:47,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 06:15:47,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 06:15:47,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 06:15:47,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 06:15:47,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-05 06:15:47,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 06:15:47,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 06:15:47,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 06:15:47,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 06:15:47,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 06:15:47,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 06:15:47,240 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 06:15:47,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 06:15:47,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 06:15:47,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 06:15:47,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 06:15:47,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 06:15:47,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 06:15:47,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 06:15:47,241 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 06:15:47,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 06:15:47,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 06:15:47,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 06:15:47,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 06:15:47,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 06:15:47,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 06:15:47,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 06:15:47,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 06:15:47,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 06:15:47,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 06:15:47,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 06:15:47,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 06:15:47,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 06:15:47,243 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 06:15:47,243 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 06:15:47,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 06:15:47,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 06:15:47,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 06:15:47,452 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 06:15:47,452 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 06:15:47,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/vnew1.c [2022-04-05 06:15:47,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a8e6384/9f3256bdc65743a295865453ae7dbb4f/FLAGa78cea4ab [2022-04-05 06:15:47,883 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 06:15:47,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/vnew1.c [2022-04-05 06:15:47,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a8e6384/9f3256bdc65743a295865453ae7dbb4f/FLAGa78cea4ab [2022-04-05 06:15:47,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a8e6384/9f3256bdc65743a295865453ae7dbb4f [2022-04-05 06:15:47,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 06:15:47,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 06:15:47,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 06:15:47,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 06:15:47,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 06:15:47,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 06:15:47" (1/1) ... [2022-04-05 06:15:47,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3b4bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:47, skipping insertion in model container [2022-04-05 06:15:47,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 06:15:47" (1/1) ... [2022-04-05 06:15:47,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 06:15:47,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 06:15:48,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/vnew1.c[403,416] [2022-04-05 06:15:48,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 06:15:48,026 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 06:15:48,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/vnew1.c[403,416] [2022-04-05 06:15:48,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 06:15:48,057 INFO L208 MainTranslator]: Completed translation [2022-04-05 06:15:48,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48 WrapperNode [2022-04-05 06:15:48,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 06:15:48,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 06:15:48,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 06:15:48,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 06:15:48,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48" (1/1) ... [2022-04-05 06:15:48,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48" (1/1) ... [2022-04-05 06:15:48,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48" (1/1) ... [2022-04-05 06:15:48,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48" (1/1) ... [2022-04-05 06:15:48,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48" (1/1) ... [2022-04-05 06:15:48,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48" (1/1) ... [2022-04-05 06:15:48,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48" (1/1) ... [2022-04-05 06:15:48,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 06:15:48,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 06:15:48,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 06:15:48,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 06:15:48,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48" (1/1) ... [2022-04-05 06:15:48,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 06:15:48,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 06:15:48,111 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) [2022-04-05 06:15:48,116 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 [2022-04-05 06:15:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 06:15:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 06:15:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 06:15:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 06:15:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 06:15:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 06:15:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 06:15:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 06:15:48,183 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 06:15:48,184 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 06:15:48,289 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 06:15:48,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 06:15:48,293 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 06:15:48,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 06:15:48 BoogieIcfgContainer [2022-04-05 06:15:48,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 06:15:48,306 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 06:15:48,306 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 06:15:48,306 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 06:15:48,308 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 06:15:48" (1/1) ... [2022-04-05 06:15:48,310 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 06:15:48,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 06:15:48 BasicIcfg [2022-04-05 06:15:48,323 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 06:15:48,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 06:15:48,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 06:15:48,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 06:15:48,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 06:15:47" (1/4) ... [2022-04-05 06:15:48,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f364f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 06:15:48, skipping insertion in model container [2022-04-05 06:15:48,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:15:48" (2/4) ... [2022-04-05 06:15:48,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f364f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 06:15:48, skipping insertion in model container [2022-04-05 06:15:48,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 06:15:48" (3/4) ... [2022-04-05 06:15:48,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f364f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 06:15:48, skipping insertion in model container [2022-04-05 06:15:48,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 06:15:48" (4/4) ... [2022-04-05 06:15:48,328 INFO L111 eAbstractionObserver]: Analyzing ICFG vnew1.cqvasr [2022-04-05 06:15:48,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 06:15:48,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 06:15:48,373 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 06:15:48,377 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 06:15:48,378 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 06:15:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 06:15:48,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-05 06:15:48,391 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 06:15:48,391 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 06:15:48,392 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 06:15:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 06:15:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash 565582179, now seen corresponding path program 1 times [2022-04-05 06:15:48,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 06:15:48,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397438682] [2022-04-05 06:15:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 06:15:48,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 06:15:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:15:48,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 06:15:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:15:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 06:15:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 06:15:48,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397438682] [2022-04-05 06:15:48,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397438682] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 06:15:48,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 06:15:48,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 06:15:48,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847910969] [2022-04-05 06:15:48,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 06:15:48,566 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 06:15:48,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 06:15:48,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 06:15:48,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 06:15:48,589 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-04-05 06:15:48,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 06:15:48,626 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-04-05 06:15:48,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 06:15:48,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 14 [2022-04-05 06:15:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 06:15:48,632 INFO L225 Difference]: With dead ends: 38 [2022-04-05 06:15:48,632 INFO L226 Difference]: Without dead ends: 18 [2022-04-05 06:15:48,634 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 [2022-04-05 06:15:48,636 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 06:15:48,636 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 25 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 06:15:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-05 06:15:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-05 06:15:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 06:15:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-04-05 06:15:48,662 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2022-04-05 06:15:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 06:15:48,663 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-04-05 06:15:48,663 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-04-05 06:15:48,663 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-04-05 06:15:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-05 06:15:48,664 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 06:15:48,664 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 06:15:48,664 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 06:15:48,664 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 06:15:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 06:15:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1453085860, now seen corresponding path program 1 times [2022-04-05 06:15:48,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 06:15:48,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799227119] [2022-04-05 06:15:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 06:15:48,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 06:15:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:15:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 06:15:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:15:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 06:15:48,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 06:15:48,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799227119] [2022-04-05 06:15:48,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799227119] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 06:15:48,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 06:15:48,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 06:15:48,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990755688] [2022-04-05 06:15:48,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 06:15:48,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 06:15:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 06:15:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 06:15:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-05 06:15:48,821 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-04-05 06:15:48,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 06:15:48,917 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-05 06:15:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 06:15:48,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 14 [2022-04-05 06:15:48,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 06:15:48,919 INFO L225 Difference]: With dead ends: 30 [2022-04-05 06:15:48,919 INFO L226 Difference]: Without dead ends: 19 [2022-04-05 06:15:48,923 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-04-05 06:15:48,924 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 06:15:48,924 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 06:15:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-05 06:15:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-05 06:15:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 06:15:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-04-05 06:15:48,928 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2022-04-05 06:15:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 06:15:48,928 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-04-05 06:15:48,928 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-04-05 06:15:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-04-05 06:15:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-05 06:15:48,929 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 06:15:48,929 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 06:15:48,929 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 06:15:48,929 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 06:15:48,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 06:15:48,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1975996661, now seen corresponding path program 1 times [2022-04-05 06:15:48,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 06:15:48,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839217799] [2022-04-05 06:15:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 06:15:48,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 06:15:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:15:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 06:15:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:15:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 06:15:49,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 06:15:49,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839217799] [2022-04-05 06:15:49,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839217799] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 06:15:49,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078365176] [2022-04-05 06:15:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 06:15:49,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 06:15:49,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 06:15:49,222 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) [2022-04-05 06:15:49,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process