/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/lcm1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:31:18,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:31:18,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:31:18,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-09 22:31:18,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-09 22:31:18,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-09 22:31:18,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-09 22:31:18,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-09 22:31:18,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-09 22:31:18,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-09 22:31:18,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-09 22:31:18,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-09 22:31:18,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 22:31:18,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 22:31:18,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 22:31:18,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 22:31:18,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 22:31:18,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 22:31:18,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 22:31:18,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 22:31:18,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 22:31:18,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 22:31:18,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 22:31:18,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 22:31:18,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-09 22:31:18,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-09 22:31:18,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-09 22:31:18,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-09 22:31:18,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-09 22:31:18,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-09 22:31:18,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-09 22:31:18,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-09 22:31:18,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-09 22:31:18,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-09 22:31:18,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-09 22:31:18,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-09 22:31:18,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-09 22:31:18,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-09 22:31:18,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:31:18,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:31:18,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:31:18,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 22:31:18,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:31:18,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:31:18,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:31:18,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:31:18,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:31:18,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:31:18,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:31:18,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:31:18,337 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:31:18,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:31:18,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:31:18,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:31:18,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:31:18,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:31:18,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:31:18,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:31:18,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:31:18,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:31:18,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:31:18,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:31:18,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:31:18,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:31:18,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:31:18,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:31:18,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:31:18,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:31:18,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:31:18,340 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:31:18,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:31:18,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:31:18,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:31:18,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:31:18,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:31:18,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:31:18,595 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:31:18,597 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:31:18,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm1.c [2022-01-09 22:31:18,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80cd1f9da/f7651b8921ad49459249f0f9a39d89f1/FLAGa4bdcb7d0 [2022-01-09 22:31:19,038 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:31:19,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c [2022-01-09 22:31:19,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80cd1f9da/f7651b8921ad49459249f0f9a39d89f1/FLAGa4bdcb7d0 [2022-01-09 22:31:19,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80cd1f9da/f7651b8921ad49459249f0f9a39d89f1 [2022-01-09 22:31:19,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:31:19,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:31:19,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:31:19,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:31:19,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:31:19,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b73f987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19, skipping insertion in model container [2022-01-09 22:31:19,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:31:19,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:31:19,577 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/lcm1.c[552,565] [2022-01-09 22:31:19,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:31:19,612 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:31:19,622 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/lcm1.c[552,565] [2022-01-09 22:31:19,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:31:19,638 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:31:19,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19 WrapperNode [2022-01-09 22:31:19,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:31:19,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:31:19,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:31:19,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:31:19,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,663 INFO L137 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2022-01-09 22:31:19,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:31:19,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:31:19,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:31:19,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:31:19,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:31:19,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:31:19,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:31:19,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:31:19,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (1/1) ... [2022-01-09 22:31:19,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:31:19,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:31:19,732 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) [2022-01-09 22:31:19,751 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 [2022-01-09 22:31:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:31:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-09 22:31:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-09 22:31:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:31:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:31:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:31:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-09 22:31:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-09 22:31:19,815 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:31:19,816 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:31:19,962 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:31:19,967 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:31:19,967 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-09 22:31:19,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:31:19 BoogieIcfgContainer [2022-01-09 22:31:19,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:31:19,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:31:19,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:31:19,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:31:19,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:31:19" (1/3) ... [2022-01-09 22:31:19,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ed6d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:31:19, skipping insertion in model container [2022-01-09 22:31:19,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:31:19" (2/3) ... [2022-01-09 22:31:19,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ed6d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:31:19, skipping insertion in model container [2022-01-09 22:31:19,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:31:19" (3/3) ... [2022-01-09 22:31:19,984 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1.c [2022-01-09 22:31:19,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:31:19,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:31:20,091 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:31:20,101 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 22:31:20,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:31:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-09 22:31:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-09 22:31:20,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:31:20,132 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:31:20,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:31:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:31:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2110142499, now seen corresponding path program 1 times [2022-01-09 22:31:20,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:31:20,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755157572] [2022-01-09 22:31:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:20,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:31:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:31:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:20,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-09 22:31:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:20,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-09 22:31:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-09 22:31:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-09 22:31:20,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:31:20,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755157572] [2022-01-09 22:31:20,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755157572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:31:20,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:31:20,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 22:31:20,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342794028] [2022-01-09 22:31:20,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:31:20,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 22:31:20,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:31:20,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 22:31:20,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:31:20,389 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 22:31:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:31:20,417 INFO L93 Difference]: Finished difference Result 61 states and 103 transitions. [2022-01-09 22:31:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 22:31:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-01-09 22:31:20,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:31:20,425 INFO L225 Difference]: With dead ends: 61 [2022-01-09 22:31:20,425 INFO L226 Difference]: Without dead ends: 28 [2022-01-09 22:31:20,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:31:20,435 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:31:20,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:31:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-09 22:31:20,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-09 22:31:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 22:31:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2022-01-09 22:31:20,472 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 28 [2022-01-09 22:31:20,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:31:20,472 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-01-09 22:31:20,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 22:31:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2022-01-09 22:31:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-09 22:31:20,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:31:20,475 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:31:20,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 22:31:20,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:31:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:31:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash -43873629, now seen corresponding path program 1 times [2022-01-09 22:31:20,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:31:20,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393126189] [2022-01-09 22:31:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:20,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:31:20,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:31:20,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086188129] [2022-01-09 22:31:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:20,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:20,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:31:20,504 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) [2022-01-09 22:31:20,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:31:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:20,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-09 22:31:20,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:31:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-09 22:31:20,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 22:31:20,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:31:20,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393126189] [2022-01-09 22:31:20,711 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:31:20,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086188129] [2022-01-09 22:31:20,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086188129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:31:20,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:31:20,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 22:31:20,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189668335] [2022-01-09 22:31:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:31:20,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 22:31:20,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:31:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 22:31:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 22:31:20,720 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-09 22:31:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:31:20,823 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2022-01-09 22:31:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 22:31:20,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-01-09 22:31:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:31:20,825 INFO L225 Difference]: With dead ends: 45 [2022-01-09 22:31:20,825 INFO L226 Difference]: Without dead ends: 43 [2022-01-09 22:31:20,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-09 22:31:20,827 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:31:20,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 112 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:31:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-09 22:31:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-01-09 22:31:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-09 22:31:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2022-01-09 22:31:20,839 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 28 [2022-01-09 22:31:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:31:20,840 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2022-01-09 22:31:20,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-09 22:31:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2022-01-09 22:31:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-09 22:31:20,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:31:20,841 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:31:20,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:31:21,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:21,043 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:31:21,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:31:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1773444737, now seen corresponding path program 1 times [2022-01-09 22:31:21,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:31:21,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785758234] [2022-01-09 22:31:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:21,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:31:21,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:31:21,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238169591] [2022-01-09 22:31:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:21,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:21,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:31:21,067 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) [2022-01-09 22:31:21,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process