/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/nla-digbench/freire2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 20:21:35,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 20:21:35,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 20:21:35,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 20:21:35,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 20:21:35,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 20:21:35,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 20:21:35,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 20:21:35,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 20:21:35,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 20:21:35,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 20:21:35,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 20:21:35,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 20:21:35,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 20:21:35,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 20:21:35,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 20:21:35,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 20:21:35,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 20:21:35,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 20:21:35,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 20:21:35,311 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 20:21:35,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 20:21:35,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 20:21:35,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 20:21:35,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 20:21:35,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-17 20:21:35,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-17 20:21:35,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-17 20:21:35,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-17 20:21:35,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-17 20:21:35,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-17 20:21:35,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 20:21:35,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 20:21:35,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 20:21:35,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 20:21:35,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 20:21:35,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 20:21:35,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 20:21:35,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 20:21:35,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 20:21:35,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 20:21:35,380 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 20:21:35,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 20:21:35,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 20:21:35,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 20:21:35,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 20:21:35,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 20:21:35,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 20:21:35,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 20:21:35,382 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 20:21:35,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 20:21:35,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 20:21:35,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 20:21:35,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 20:21:35,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 20:21:35,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 20:21:35,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 20:21:35,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 20:21:35,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 20:21:35,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 20:21:35,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 20:21:35,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 20:21:35,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 20:21:35,386 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 20:21:35,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 20:21:35,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 20:21:35,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 20:21:35,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 20:21:35,593 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 20:21:35,594 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 20:21:35,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/freire2.c [2022-03-17 20:21:35,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf949f7d/182a4f30099d415d845fc18d727402f4/FLAGd5e16636a [2022-03-17 20:21:36,065 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 20:21:36,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire2.c [2022-03-17 20:21:36,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf949f7d/182a4f30099d415d845fc18d727402f4/FLAGd5e16636a [2022-03-17 20:21:36,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf949f7d/182a4f30099d415d845fc18d727402f4 [2022-03-17 20:21:36,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 20:21:36,483 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 20:21:36,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 20:21:36,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 20:21:36,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 20:21:36,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1393e86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36, skipping insertion in model container [2022-03-17 20:21:36,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 20:21:36,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 20:21:36,660 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/freire2.c[709,722] [2022-03-17 20:21:36,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 20:21:36,691 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 20:21:36,700 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/freire2.c[709,722] [2022-03-17 20:21:36,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 20:21:36,717 INFO L208 MainTranslator]: Completed translation [2022-03-17 20:21:36,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36 WrapperNode [2022-03-17 20:21:36,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 20:21:36,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 20:21:36,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 20:21:36,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 20:21:36,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 20:21:36,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 20:21:36,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 20:21:36,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 20:21:36,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36" (1/1) ... [2022-03-17 20:21:36,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 20:21:36,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 20:21:36,796 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) [2022-03-17 20:21:36,816 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 [2022-03-17 20:21:36,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 20:21:36,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 20:21:36,842 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 20:21:36,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 20:21:36,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 20:21:36,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 20:21:36,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 20:21:36,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 20:21:36,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 20:21:36,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 20:21:36,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-03-17 20:21:36,845 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 20:21:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 20:21:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 20:21:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 20:21:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 20:21:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 20:21:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 20:21:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 20:21:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 20:21:36,898 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 20:21:36,900 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 20:21:37,083 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 20:21:37,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 20:21:37,088 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 20:21:37,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 08:21:37 BoogieIcfgContainer [2022-03-17 20:21:37,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 20:21:37,091 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 20:21:37,091 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 20:21:37,092 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 20:21:37,110 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 08:21:37" (1/1) ... [2022-03-17 20:21:37,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 08:21:37 BasicIcfg [2022-03-17 20:21:37,137 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 20:21:37,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 20:21:37,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 20:21:37,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 20:21:37,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 08:21:36" (1/4) ... [2022-03-17 20:21:37,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e72f4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:21:37, skipping insertion in model container [2022-03-17 20:21:37,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:21:36" (2/4) ... [2022-03-17 20:21:37,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e72f4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:21:37, skipping insertion in model container [2022-03-17 20:21:37,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 08:21:37" (3/4) ... [2022-03-17 20:21:37,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e72f4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 08:21:37, skipping insertion in model container [2022-03-17 20:21:37,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 08:21:37" (4/4) ... [2022-03-17 20:21:37,143 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.cqvasr [2022-03-17 20:21:37,163 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 20:21:37,163 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 20:21:37,224 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 20:21:37,232 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 [2022-03-17 20:21:37,232 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 20:21:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-17 20:21:37,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-17 20:21:37,258 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 20:21:37,258 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 20:21:37,259 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 20:21:37,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 20:21:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash 637070135, now seen corresponding path program 1 times [2022-03-17 20:21:37,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 20:21:37,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909777614] [2022-03-17 20:21:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 20:21:37,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 20:21:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 20:21:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 20:21:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 20:21:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 20:21:37,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 20:21:37,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909777614] [2022-03-17 20:21:37,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909777614] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 20:21:37,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 20:21:37,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 20:21:37,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268225655] [2022-03-17 20:21:37,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 20:21:37,462 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 20:21:37,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 20:21:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 20:21:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 20:21:37,492 INFO L87 Difference]: Start difference. First operand has 25 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2022-03-17 20:21:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 20:21:37,573 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2022-03-17 20:21:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 20:21:37,576 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 [2022-03-17 20:21:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 20:21:37,581 INFO L225 Difference]: With dead ends: 44 [2022-03-17 20:21:37,581 INFO L226 Difference]: Without dead ends: 20 [2022-03-17 20:21:37,585 INFO L911 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 [2022-03-17 20:21:37,593 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 20:21:37,595 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 20:21:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-03-17 20:21:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-03-17 20:21:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-17 20:21:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-03-17 20:21:37,634 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2022-03-17 20:21:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 20:21:37,635 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-03-17 20:21:37,636 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) [2022-03-17 20:21:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-03-17 20:21:37,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-17 20:21:37,638 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 20:21:37,638 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 20:21:37,638 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 20:21:37,639 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 20:21:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 20:21:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash 638946968, now seen corresponding path program 1 times [2022-03-17 20:21:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 20:21:37,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554351734] [2022-03-17 20:21:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 20:21:37,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 20:21:37,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 20:21:37,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860102282] [2022-03-17 20:21:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 20:21:37,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 20:21:37,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 20:21:37,678 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) [2022-03-17 20:21:37,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 20:21:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 20:21:37,734 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-17 20:21:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 20:21:37,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-17 20:21:37,765 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-17 20:21:37,767 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 20:21:37,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 20:21:37,988 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 [2022-03-17 20:21:37,990 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-17 20:21:37,992 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 20:21:38,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 08:21:38 BasicIcfg [2022-03-17 20:21:38,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 20:21:38,010 INFO L158 Benchmark]: Toolchain (without parser) took 1525.98ms. Allocated memory was 199.2MB in the beginning and 272.6MB in the end (delta: 73.4MB). Free memory was 141.2MB in the beginning and 199.3MB in the end (delta: -58.1MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. [2022-03-17 20:21:38,011 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 157.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 20:21:38,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.20ms. Allocated memory was 199.2MB in the beginning and 272.6MB in the end (delta: 73.4MB). Free memory was 140.9MB in the beginning and 242.8MB in the end (delta: -101.9MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2022-03-17 20:21:38,014 INFO L158 Benchmark]: Boogie Preprocessor took 38.11ms. Allocated memory is still 272.6MB. Free memory was 242.8MB in the beginning and 241.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-17 20:21:38,014 INFO L158 Benchmark]: RCFGBuilder took 331.74ms. Allocated memory is still 272.6MB. Free memory was 241.2MB in the beginning and 230.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-17 20:21:38,015 INFO L158 Benchmark]: IcfgTransformer took 46.94ms. Allocated memory is still 272.6MB. Free memory was 230.2MB in the beginning and 229.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 20:21:38,015 INFO L158 Benchmark]: TraceAbstraction took 869.73ms. Allocated memory is still 272.6MB. Free memory was 228.7MB in the beginning and 199.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-03-17 20:21:38,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 157.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 233.20ms. Allocated memory was 199.2MB in the beginning and 272.6MB in the end (delta: 73.4MB). Free memory was 140.9MB in the beginning and 242.8MB in the end (delta: -101.9MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.11ms. Allocated memory is still 272.6MB. Free memory was 242.8MB in the beginning and 241.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 331.74ms. Allocated memory is still 272.6MB. Free memory was 241.2MB in the beginning and 230.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 46.94ms. Allocated memory is still 272.6MB. Free memory was 230.2MB in the beginning and 229.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 869.73ms. Allocated memory is still 272.6MB. Free memory was 228.7MB in the beginning and 199.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. 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 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L32] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L33] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 24 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-03-17 20:21:38,053 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...