/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/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 06:25:38,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 06:25:39,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 06:25:39,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 06:25:39,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 06:25:39,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 06:25:39,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 06:25:39,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 06:25:39,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 06:25:39,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 06:25:39,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 06:25:39,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 06:25:39,068 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 06:25:39,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 06:25:39,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 06:25:39,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 06:25:39,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 06:25:39,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 06:25:39,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 06:25:39,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 06:25:39,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 06:25:39,090 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 06:25:39,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 06:25:39,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 06:25:39,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 06:25:39,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 06:25:39,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 06:25:39,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 06:25:39,112 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 06:25:39,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 06:25:39,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 06:25:39,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 06:25:39,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 06:25:39,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 06:25:39,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 06:25:39,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 06:25:39,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 06:25:39,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 06:25:39,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 06:25:39,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 06:25:39,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 06:25:39,115 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 06:25:39,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 06:25:39,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 06:25:39,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 06:25:39,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 06:25:39,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 06:25:39,332 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 06:25:39,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c [2022-04-05 06:25:39,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9dc96546/12552e64c3f048839e4ade03040252fd/FLAG91e910dc2 [2022-04-05 06:25:39,733 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 06:25:39,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c [2022-04-05 06:25:39,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9dc96546/12552e64c3f048839e4ade03040252fd/FLAG91e910dc2 [2022-04-05 06:25:40,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9dc96546/12552e64c3f048839e4ade03040252fd [2022-04-05 06:25:40,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 06:25:40,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 06:25:40,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 06:25:40,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 06:25:40,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 06:25:40,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acf9921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40, skipping insertion in model container [2022-04-05 06:25:40,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 06:25:40,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 06:25:40,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c[526,539] [2022-04-05 06:25:40,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 06:25:40,301 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 06:25:40,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c[526,539] [2022-04-05 06:25:40,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 06:25:40,345 INFO L208 MainTranslator]: Completed translation [2022-04-05 06:25:40,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40 WrapperNode [2022-04-05 06:25:40,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 06:25:40,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 06:25:40,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 06:25:40,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 06:25:40,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 06:25:40,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 06:25:40,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 06:25:40,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 06:25:40,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 06:25:40,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 06:25:40,409 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 06:25:40,426 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 06:25:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 06:25:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 06:25:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 06:25:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 06:25:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 06:25:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2022-04-05 06:25:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2022-04-05 06:25:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2022-04-05 06:25:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-04-05 06:25:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 06:25:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-04-05 06:25:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-04-05 06:25:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-04-05 06:25:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 06:25:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 06:25:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 06:25:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 06:25:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 06:25:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-05 06:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-04-05 06:25:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 06:25:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 06:25:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 06:25:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 06:25:40,535 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 06:25:40,536 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 06:25:40,674 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 06:25:40,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 06:25:40,680 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-04-05 06:25:40,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 06:25:40 BoogieIcfgContainer [2022-04-05 06:25:40,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 06:25:40,683 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 06:25:40,683 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 06:25:40,684 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 06:25:40,685 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 06:25:40" (1/1) ... [2022-04-05 06:25:40,687 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 06:25:40,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 06:25:40 BasicIcfg [2022-04-05 06:25:40,707 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 06:25:40,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 06:25:40,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 06:25:40,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 06:25:40,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 06:25:40" (1/4) ... [2022-04-05 06:25:40,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a752b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 06:25:40, skipping insertion in model container [2022-04-05 06:25:40,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 06:25:40" (2/4) ... [2022-04-05 06:25:40,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a752b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 06:25:40, skipping insertion in model container [2022-04-05 06:25:40,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 06:25:40" (3/4) ... [2022-04-05 06:25:40,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a752b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 06:25:40, skipping insertion in model container [2022-04-05 06:25:40,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 06:25:40" (4/4) ... [2022-04-05 06:25:40,715 INFO L111 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.cqvasr [2022-04-05 06:25:40,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 06:25:40,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 06:25:40,757 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 06:25:40,768 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 06:25:40,768 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 06:25:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 43 states have internal predecessors, (59), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 06:25:40,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 06:25:40,787 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 06:25:40,788 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 06:25:40,788 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 06:25:40,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 06:25:40,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2097281603, now seen corresponding path program 1 times [2022-04-05 06:25:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 06:25:40,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816519588] [2022-04-05 06:25:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 06:25:40,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 06:25:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 06:25:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:40,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 06:25:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:40,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 06:25:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 06:25:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 06:25:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 06:25:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 06:25:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 06:25:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-04-05 06:25:41,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 06:25:41,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816519588] [2022-04-05 06:25:41,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816519588] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 06:25:41,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 06:25:41,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 06:25:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959004045] [2022-04-05 06:25:41,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 06:25:41,044 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 06:25:41,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 06:25:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 06:25:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 06:25:41,062 INFO L87 Difference]: Start difference. First operand has 64 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 43 states have internal predecessors, (59), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 06:25:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 06:25:41,177 INFO L93 Difference]: Finished difference Result 127 states and 171 transitions. [2022-04-05 06:25:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 06:25:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-04-05 06:25:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 06:25:41,184 INFO L225 Difference]: With dead ends: 127 [2022-04-05 06:25:41,184 INFO L226 Difference]: Without dead ends: 63 [2022-04-05 06:25:41,186 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-05 06:25:41,188 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 81 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 06:25:41,188 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 59 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 06:25:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-04-05 06:25:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2022-04-05 06:25:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 06:25:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2022-04-05 06:25:41,213 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 54 [2022-04-05 06:25:41,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 06:25:41,213 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2022-04-05 06:25:41,214 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 06:25:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2022-04-05 06:25:41,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 06:25:41,215 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 06:25:41,215 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 06:25:41,215 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 06:25:41,216 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 06:25:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 06:25:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 852142075, now seen corresponding path program 1 times [2022-04-05 06:25:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 06:25:41,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626871537] [2022-04-05 06:25:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 06:25:41,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 06:25:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 06:25:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 06:25:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 06:25:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 06:25:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 06:25:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 06:25:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 06:25:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 06:25:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-04-05 06:25:41,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 06:25:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626871537] [2022-04-05 06:25:41,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626871537] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 06:25:41,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 06:25:41,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 06:25:41,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272722721] [2022-04-05 06:25:41,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 06:25:41,452 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 06:25:41,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 06:25:41,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 06:25:41,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-04-05 06:25:41,453 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 06:25:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 06:25:41,717 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2022-04-05 06:25:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 06:25:41,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-04-05 06:25:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 06:25:41,720 INFO L225 Difference]: With dead ends: 81 [2022-04-05 06:25:41,720 INFO L226 Difference]: Without dead ends: 65 [2022-04-05 06:25:41,721 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-05 06:25:41,722 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 84 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 06:25:41,723 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 55 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 06:25:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-04-05 06:25:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2022-04-05 06:25:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 06:25:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-04-05 06:25:41,738 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 54 [2022-04-05 06:25:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 06:25:41,739 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-04-05 06:25:41,739 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 06:25:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-04-05 06:25:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-05 06:25:41,740 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 06:25:41,740 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 06:25:41,740 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 06:25:41,740 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 06:25:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 06:25:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1042904707, now seen corresponding path program 1 times [2022-04-05 06:25:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 06:25:41,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337642630] [2022-04-05 06:25:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 06:25:41,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 06:25:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 06:25:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 06:25:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 06:25:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 06:25:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 06:25:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:41,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 06:25:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 06:25:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 06:25:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-05 06:25:42,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 06:25:42,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337642630] [2022-04-05 06:25:42,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337642630] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 06:25:42,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758322876] [2022-04-05 06:25:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 06:25:42,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 06:25:42,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 06:25:42,041 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 06:25:42,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 06:25:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 06:25:42,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjunts are in the unsatisfiable core [2022-04-05 06:25:42,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 06:25:42,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-04-05 06:25:42,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-04-05 06:25:42,267 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-04-05 06:25:42,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-04-05 06:25:42,281 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_51 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_51) |c_#memory_int|)) is different from true [2022-04-05 06:25:42,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-04-05 06:25:42,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-04-05 06:25:42,749 WARN L855 $PredicateComparison]: unable to prove that (exists ((downsweep_~n Int) (downsweep_~a.offset Int)) (= (store |c_old(#memory_int)| |c_downsweep_#in~a.base| (store (select |c_old(#memory_int)| |c_downsweep_#in~a.base|) (+ (* downsweep_~n 4) downsweep_~a.offset (- 4)) 0)) |c_#memory_int|)) is different from true [2022-04-05 06:25:42,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-04-05 06:25:42,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-04-05 06:25:42,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 20397 column 92: unknown constant v_arrayElimCell_6 [2022-04-05 06:25:42,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 06:25:42,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-04-05 06:25:42,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387270445] [2022-04-05 06:25:42,852 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 06:25:42,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 06:25:42,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 06:25:42,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 06:25:42,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=335, Unknown=2, NotChecked=74, Total=462 [2022-04-05 06:25:42,853 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-05 06:25:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-05 06:25:42,854 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=335, Unknown=2, NotChecked=74, Total=462 [2022-04-05 06:25:42,854 INFO L913 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1 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 [2022-04-05 06:25:42,855 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 06:25:42,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 06:25:43,063 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 06:25:43,064 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@65cfc226 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkCall(IncrementalHoareTripleChecker.java:150) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkCall(ChainingHoareTripleChecker.java:470) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkCall(ChainingHoareTripleChecker.java:115) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1082) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:961) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:853) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:770) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:470) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:421) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:412) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-05 06:25:43,067 INFO L158 Benchmark]: Toolchain (without parser) took 2923.51ms. Allocated memory was 181.4MB in the beginning and 224.4MB in the end (delta: 43.0MB). Free memory was 130.5MB in the beginning and 107.3MB in the end (delta: 23.1MB). Peak memory consumption was 67.0MB. Max. memory is 8.0GB. [2022-04-05 06:25:43,067 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory was 146.9MB in the beginning and 146.8MB in the end (delta: 72.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 06:25:43,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.80ms. Allocated memory is still 181.4MB. Free memory was 130.2MB in the beginning and 156.0MB in the end (delta: -25.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-05 06:25:43,068 INFO L158 Benchmark]: Boogie Preprocessor took 38.40ms. Allocated memory is still 181.4MB. Free memory was 156.0MB in the beginning and 153.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 06:25:43,068 INFO L158 Benchmark]: RCFGBuilder took 294.20ms. Allocated memory is still 181.4MB. Free memory was 153.9MB in the beginning and 139.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-04-05 06:25:43,068 INFO L158 Benchmark]: IcfgTransformer took 24.25ms. Allocated memory is still 181.4MB. Free memory was 139.3MB in the beginning and 137.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 06:25:43,069 INFO L158 Benchmark]: TraceAbstraction took 2357.76ms. Allocated memory was 181.4MB in the beginning and 224.4MB in the end (delta: 43.0MB). Free memory was 136.7MB in the beginning and 107.3MB in the end (delta: 29.4MB). Peak memory consumption was 72.9MB. Max. memory is 8.0GB. [2022-04-05 06:25:43,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory was 146.9MB in the beginning and 146.8MB in the end (delta: 72.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.80ms. Allocated memory is still 181.4MB. Free memory was 130.2MB in the beginning and 156.0MB in the end (delta: -25.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.40ms. Allocated memory is still 181.4MB. Free memory was 156.0MB in the beginning and 153.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 294.20ms. Allocated memory is still 181.4MB. Free memory was 153.9MB in the beginning and 139.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * IcfgTransformer took 24.25ms. Allocated memory is still 181.4MB. Free memory was 139.3MB in the beginning and 137.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 2357.76ms. Allocated memory was 181.4MB in the beginning and 224.4MB in the end (delta: 43.0MB). Free memory was 136.7MB in the beginning and 107.3MB in the end (delta: 29.4MB). Peak memory consumption was 72.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@65cfc226 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@65cfc226: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-05 06:25:43,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 1 Received shutdown request...