./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d2ba6107 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f93f8af6c620ba8dc44e82cf4c30bbca874545f3e3802e43ba4e1345a3afed4 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-d2ba610-m [2023-11-21 18:02:51,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:02:51,604 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-21 18:02:51,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:02:51,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:02:51,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:02:51,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:02:51,661 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:02:51,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:02:51,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:02:51,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:02:51,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:02:51,668 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 18:02:51,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:02:51,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:02:51,670 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:02:51,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:02:51,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:02:51,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:02:51,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:02:51,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:02:51,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:02:51,671 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:02:51,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:02:51,672 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:02:51,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:02:51,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 18:02:51,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:02:51,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:02:51,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:02:51,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:02:51,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:02:51,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:02:51,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 18:02:51,675 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-21 18:02:51,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:02:51,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:02:51,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 18:02:51,675 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:02:51,675 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 18:02:51,676 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 18:02:51,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f93f8af6c620ba8dc44e82cf4c30bbca874545f3e3802e43ba4e1345a3afed4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-21 18:02:51,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:02:51,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:02:51,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:02:51,885 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:02:51,885 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:02:51,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2023-11-21 18:02:52,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:02:53,076 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:02:53,077 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2023-11-21 18:02:53,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/673179a44/6c0e7bab2f924134ba5b7ef90eb7feab/FLAG88b108749 [2023-11-21 18:02:53,099 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/673179a44/6c0e7bab2f924134ba5b7ef90eb7feab [2023-11-21 18:02:53,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:02:53,104 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:02:53,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:02:53,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:02:53,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:02:53,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2879bea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53, skipping insertion in model container [2023-11-21 18:02:53,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,131 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:02:53,243 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c[2505,2518] [2023-11-21 18:02:53,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:02:53,254 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:02:53,271 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c[2505,2518] [2023-11-21 18:02:53,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:02:53,297 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:02:53,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53 WrapperNode [2023-11-21 18:02:53,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:02:53,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:02:53,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:02:53,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:02:53,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,323 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-11-21 18:02:53,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:02:53,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:02:53,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:02:53,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:02:53,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,334 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,343 INFO L193 HeapSplitter]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2] [2023-11-21 18:02:53,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:02:53,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:02:53,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:02:53,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:02:53,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (1/1) ... [2023-11-21 18:02:53,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:02:53,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-21 18:02:53,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:02:53,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:02:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:02:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 18:02:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 18:02:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 18:02:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 18:02:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 18:02:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 18:02:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-21 18:02:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-21 18:02:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 18:02:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 18:02:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 18:02:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 18:02:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 18:02:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:02:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 18:02:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 18:02:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 18:02:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 18:02:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 18:02:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:02:53,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:02:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 18:02:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 18:02:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 18:02:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 18:02:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 18:02:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:02:53,443 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 18:02:53,557 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:02:53,574 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:02:53,781 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:02:53,959 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:02:53,959 INFO L308 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-21 18:02:53,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:02:53 BoogieIcfgContainer [2023-11-21 18:02:53,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:02:53,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:02:53,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:02:53,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:02:53,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:02:53" (1/3) ... [2023-11-21 18:02:53,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bc8402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:02:53, skipping insertion in model container [2023-11-21 18:02:53,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:02:53" (2/3) ... [2023-11-21 18:02:53,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bc8402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:02:53, skipping insertion in model container [2023-11-21 18:02:53,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:02:53" (3/3) ... [2023-11-21 18:02:53,967 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2023-11-21 18:02:53,973 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 18:02:53,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:02:53,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 18:02:53,980 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 18:02:54,013 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-21 18:02:54,042 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:02:54,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-21 18:02:54,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-21 18:02:54,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-21 18:02:54,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-21 18:02:54,082 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-21 18:02:54,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-21 18:02:54,108 INFO L357 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=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e1c7c4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:02:54,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 18:02:54,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-21 18:02:54,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:02:54,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1208008520, now seen corresponding path program 1 times [2023-11-21 18:02:54,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 18:02:54,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20008333] [2023-11-21 18:02:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:02:54,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:02:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:02:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 18:02:54,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 18:02:54,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20008333] [2023-11-21 18:02:54,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20008333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:02:54,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:02:54,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 18:02:54,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965467355] [2023-11-21 18:02:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:02:54,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 18:02:54,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 18:02:54,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 18:02:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 18:02:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:02:54,724 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 18:02:54,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:02:54,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:02:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:02:54,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 18:02:54,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-21 18:02:54,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:02:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash -441470142, now seen corresponding path program 1 times [2023-11-21 18:02:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 18:02:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197093942] [2023-11-21 18:02:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:02:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:02:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:02:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 18:02:55,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 18:02:55,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197093942] [2023-11-21 18:02:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197093942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 18:02:55,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639509201] [2023-11-21 18:02:55,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:02:55,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:02:55,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-21 18:02:55,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 18:02:55,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 18:02:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:02:59,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 18:02:59,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:03:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 3 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 18:03:03,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 18:03:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 18:03:03,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639509201] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 18:03:03,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 18:03:03,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-21 18:03:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587725749] [2023-11-21 18:03:03,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 18:03:03,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 18:03:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 18:03:03,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 18:03:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=110, Unknown=1, NotChecked=0, Total=156 [2023-11-21 18:03:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:03:03,323 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 18:03:03,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:03:03,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:03:03,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:03:10,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:03:12,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:03:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:03:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 18:03:15,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 18:03:15,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-21 18:03:15,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-21 18:03:15,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:03:15,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1966874084, now seen corresponding path program 2 times [2023-11-21 18:03:15,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 18:03:15,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187991062] [2023-11-21 18:03:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:03:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:03:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:03:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 31 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:03:15,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 18:03:15,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187991062] [2023-11-21 18:03:15,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187991062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 18:03:15,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797854229] [2023-11-21 18:03:15,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 18:03:15,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:03:15,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-21 18:03:15,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 18:03:15,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 18:03:21,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 18:03:21,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 18:03:21,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 18:03:21,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:03:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 11 refuted. 1 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 18:03:25,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 18:03:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 18:03:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797854229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 18:03:34,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 18:03:34,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2023-11-21 18:03:34,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094599596] [2023-11-21 18:03:34,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 18:03:34,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 18:03:34,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 18:03:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 18:03:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=565, Unknown=3, NotChecked=0, Total=650 [2023-11-21 18:03:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:03:34,122 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 18:03:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:03:34,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:03:34,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-21 18:03:34,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:03:43,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:03:45,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:04:19,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:04:21,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:04:33,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:04:35,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:05:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:05:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 18:05:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-21 18:05:41,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-21 18:05:41,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:05:41,362 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-21 18:05:41,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:05:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -441845903, now seen corresponding path program 3 times [2023-11-21 18:05:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 18:05:41,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463223094] [2023-11-21 18:05:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:05:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:05:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:05:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 78 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 18:05:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 18:05:42,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463223094] [2023-11-21 18:05:42,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463223094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 18:05:42,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480478058] [2023-11-21 18:05:42,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 18:05:42,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:05:42,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-21 18:05:42,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 18:05:42,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 18:05:47,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-21 18:05:47,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 18:05:47,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-21 18:05:47,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:06:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 16 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 18:06:10,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 18:06:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 42 proven. 80 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:06:54,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480478058] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 18:06:54,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 18:06:54,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 17] total 46 [2023-11-21 18:06:54,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355630018] [2023-11-21 18:06:54,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 18:06:54,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-21 18:06:54,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 18:06:54,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-21 18:06:54,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1816, Unknown=2, NotChecked=0, Total=2070 [2023-11-21 18:06:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:06:54,904 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 18:06:54,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.108695652173913) internal successors, (143), 46 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:06:54,904 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:06:54,904 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-21 18:06:54,904 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 62 states. [2023-11-21 18:06:54,904 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:07:02,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:07:09,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:07:16,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:07:25,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:07:28,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:07:32,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:07:36,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15