./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:33:18,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:33:18,980 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:33:18,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:33:18,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:33:19,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:33:19,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:33:19,001 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:33:19,001 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:33:19,002 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:33:19,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:33:19,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:33:19,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:33:19,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:33:19,003 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:33:19,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:33:19,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:33:19,004 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:33:19,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:33:19,004 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:33:19,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:33:19,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:33:19,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:33:19,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:33:19,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:33:19,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:33:19,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:33:19,006 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:33:19,006 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:33:19,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:33:19,007 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:33:19,007 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:33:19,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:33:19,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:33:19,008 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:33:19,008 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:33:19,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:33:19,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:33:19,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:33:19,009 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:33:19,009 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:33:19,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:33:19,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:33:19,009 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:33:19,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:33:19,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:33:19,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:33:19,269 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:33:19,270 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:33:19,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2024-02-19 14:33:20,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:33:20,567 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:33:20,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2024-02-19 14:33:20,573 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bacecc1a/516c4376650e4afe8f9ecd9403ab5914/FLAG3650d28a7 [2024-02-19 14:33:20,582 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bacecc1a/516c4376650e4afe8f9ecd9403ab5914 [2024-02-19 14:33:20,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:33:20,585 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:33:20,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:33:20,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:33:20,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:33:20,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c05efb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20, skipping insertion in model container [2024-02-19 14:33:20,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:33:20,728 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2024-02-19 14:33:20,734 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:33:20,740 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:33:20,756 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2024-02-19 14:33:20,759 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:33:20,770 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:33:20,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20 WrapperNode [2024-02-19 14:33:20,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:33:20,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:33:20,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:33:20,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:33:20,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,803 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 279 [2024-02-19 14:33:20,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:33:20,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:33:20,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:33:20,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:33:20,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,835 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 2, 2, 9, 2]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2024-02-19 14:33:20,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,857 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:33:20,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:33:20,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:33:20,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:33:20,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (1/1) ... [2024-02-19 14:33:20,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:33:20,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:20,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 14:33:20,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 14:33:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:33:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:33:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:33:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:33:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:33:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:33:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:33:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:33:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:33:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:33:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:33:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:33:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:33:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:33:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:33:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:33:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:33:20,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:33:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:33:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:33:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:33:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:33:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:33:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:33:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:33:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:33:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:33:20,974 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:33:21,118 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:33:21,120 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:33:21,479 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:33:21,480 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:33:21,755 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:33:21,755 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-19 14:33:21,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:33:21 BoogieIcfgContainer [2024-02-19 14:33:21,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:33:21,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:33:21,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:33:21,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:33:21,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:33:20" (1/3) ... [2024-02-19 14:33:21,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6371be33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:33:21, skipping insertion in model container [2024-02-19 14:33:21,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:33:20" (2/3) ... [2024-02-19 14:33:21,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6371be33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:33:21, skipping insertion in model container [2024-02-19 14:33:21,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:33:21" (3/3) ... [2024-02-19 14:33:21,763 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2024-02-19 14:33:21,777 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:33:21,777 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:33:21,777 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:33:21,823 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 14:33:21,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 33 transitions, 87 flow [2024-02-19 14:33:21,882 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-02-19 14:33:21,882 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:33:21,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 6/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-02-19 14:33:21,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 33 transitions, 87 flow [2024-02-19 14:33:21,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 29 transitions, 76 flow [2024-02-19 14:33:21,900 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:33:21,905 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@7802f8dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:33:21,906 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 14:33:21,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:33:21,918 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-02-19 14:33:21,918 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:33:21,918 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:21,919 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:33:21,919 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:21,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:21,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1558295878, now seen corresponding path program 1 times [2024-02-19 14:33:21,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:21,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218593916] [2024-02-19 14:33:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:21,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:33:22,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:22,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218593916] [2024-02-19 14:33:22,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218593916] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:33:22,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:33:22,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:33:22,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829622261] [2024-02-19 14:33:22,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:22,359 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:33:22,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:22,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:33:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:33:22,404 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:22,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-02-19 14:33:22,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:22,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:22,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:22,555 INFO L124 PetriNetUnfolderBase]: 223/335 cut-off events. [2024-02-19 14:33:22,555 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-02-19 14:33:22,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 335 events. 223/335 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 771 event pairs, 138 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 534. Up to 332 conditions per place. [2024-02-19 14:33:22,559 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 25 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2024-02-19 14:33:22,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 144 flow [2024-02-19 14:33:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:33:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:33:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-02-19 14:33:22,568 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-02-19 14:33:22,571 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-02-19 14:33:22,571 INFO L507 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 144 flow [2024-02-19 14:33:22,571 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-02-19 14:33:22,571 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:22,571 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 14:33:22,572 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:33:22,572 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:22,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:22,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1819112920, now seen corresponding path program 1 times [2024-02-19 14:33:22,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:22,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135007591] [2024-02-19 14:33:22,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:22,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:33:22,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135007591] [2024-02-19 14:33:22,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135007591] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:33:22,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:33:22,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:33:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442268208] [2024-02-19 14:33:22,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:22,764 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:33:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:33:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:33:22,765 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:22,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-02-19 14:33:22,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:22,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:22,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:22,874 INFO L124 PetriNetUnfolderBase]: 341/506 cut-off events. [2024-02-19 14:33:22,874 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-02-19 14:33:22,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 506 events. 341/506 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1386 event pairs, 138 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1167. Up to 503 conditions per place. [2024-02-19 14:33:22,878 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 41 selfloop transitions, 2 changer transitions 2/46 dead transitions. [2024-02-19 14:33:22,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 299 flow [2024-02-19 14:33:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:33:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:33:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-02-19 14:33:22,879 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-02-19 14:33:22,880 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-02-19 14:33:22,880 INFO L507 AbstractCegarLoop]: Abstraction has has 37 places, 46 transitions, 299 flow [2024-02-19 14:33:22,880 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-02-19 14:33:22,880 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:22,881 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 14:33:22,881 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:33:22,881 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:22,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1154334910, now seen corresponding path program 1 times [2024-02-19 14:33:22,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:22,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380218923] [2024-02-19 14:33:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:22,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:33:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380218923] [2024-02-19 14:33:22,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380218923] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623187295] [2024-02-19 14:33:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:22,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:22,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:23,031 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) [2024-02-19 14:33:23,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:33:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:23,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:33:23,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:33:23,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:33:23,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623187295] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:33:23,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:33:23,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-02-19 14:33:23,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184667490] [2024-02-19 14:33:23,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:33:23,226 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:33:23,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:33:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-02-19 14:33:23,227 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:23,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 46 transitions, 299 flow. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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) [2024-02-19 14:33:23,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:23,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:23,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:23,350 INFO L124 PetriNetUnfolderBase]: 341/515 cut-off events. [2024-02-19 14:33:23,351 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-02-19 14:33:23,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 515 events. 341/515 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1390 event pairs, 138 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 1548. Up to 512 conditions per place. [2024-02-19 14:33:23,354 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 15 changer transitions 2/55 dead transitions. [2024-02-19 14:33:23,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 461 flow [2024-02-19 14:33:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:33:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:33:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-02-19 14:33:23,356 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-02-19 14:33:23,357 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-02-19 14:33:23,357 INFO L507 AbstractCegarLoop]: Abstraction has has 42 places, 55 transitions, 461 flow [2024-02-19 14:33:23,357 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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) [2024-02-19 14:33:23,357 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:23,357 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:33:23,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-19 14:33:23,571 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:23,571 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:23,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash 264129716, now seen corresponding path program 2 times [2024-02-19 14:33:23,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:23,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683540708] [2024-02-19 14:33:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:23,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-19 14:33:23,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683540708] [2024-02-19 14:33:23,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683540708] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:23,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434018220] [2024-02-19 14:33:23,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:33:23,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:23,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:23,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:23,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:33:23,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-19 14:33:23,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:23,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:33:23,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-02-19 14:33:23,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:33:23,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434018220] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:33:23,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:33:23,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-02-19 14:33:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039541208] [2024-02-19 14:33:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:23,962 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:33:23,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:23,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:33:23,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-02-19 14:33:23,963 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:23,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 55 transitions, 461 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-02-19 14:33:23,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:23,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:23,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:24,153 INFO L124 PetriNetUnfolderBase]: 567/861 cut-off events. [2024-02-19 14:33:24,154 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-02-19 14:33:24,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4391 conditions, 861 events. 567/861 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2972 event pairs, 138 based on Foata normal form. 22/632 useless extension candidates. Maximal degree in co-relation 3155. Up to 857 conditions per place. [2024-02-19 14:33:24,159 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 88 selfloop transitions, 6 changer transitions 7/102 dead transitions. [2024-02-19 14:33:24,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 102 transitions, 1069 flow [2024-02-19 14:33:24,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:33:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:33:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-02-19 14:33:24,160 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-02-19 14:33:24,161 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2024-02-19 14:33:24,161 INFO L507 AbstractCegarLoop]: Abstraction has has 45 places, 102 transitions, 1069 flow [2024-02-19 14:33:24,161 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-02-19 14:33:24,161 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:24,161 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:33:24,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:24,373 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-19 14:33:24,373 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:24,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:24,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1128721192, now seen corresponding path program 3 times [2024-02-19 14:33:24,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:24,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511671073] [2024-02-19 14:33:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:24,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-19 14:33:24,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:24,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511671073] [2024-02-19 14:33:24,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511671073] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:24,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257340269] [2024-02-19 14:33:24,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:33:24,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:24,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:24,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:24,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:33:24,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-19 14:33:24,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:24,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:33:24,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-02-19 14:33:24,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:33:24,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257340269] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:33:24,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:33:24,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-02-19 14:33:24,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993549424] [2024-02-19 14:33:24,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:24,678 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:33:24,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:24,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:33:24,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-02-19 14:33:24,679 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:24,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 102 transitions, 1069 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-02-19 14:33:24,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:24,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:24,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:24,860 INFO L124 PetriNetUnfolderBase]: 625/943 cut-off events. [2024-02-19 14:33:24,860 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-02-19 14:33:24,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5747 conditions, 943 events. 625/943 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3378 event pairs, 28 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 4274. Up to 939 conditions per place. [2024-02-19 14:33:24,866 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 126 selfloop transitions, 10 changer transitions 25/162 dead transitions. [2024-02-19 14:33:24,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 162 transitions, 2015 flow [2024-02-19 14:33:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:33:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:33:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-02-19 14:33:24,867 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-02-19 14:33:24,868 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-02-19 14:33:24,868 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 162 transitions, 2015 flow [2024-02-19 14:33:24,868 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-02-19 14:33:24,868 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:24,868 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:33:24,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:25,079 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:25,080 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:25,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash -666947158, now seen corresponding path program 4 times [2024-02-19 14:33:25,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:25,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473152973] [2024-02-19 14:33:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:25,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-19 14:33:25,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:25,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473152973] [2024-02-19 14:33:25,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473152973] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:25,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824695453] [2024-02-19 14:33:25,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:33:25,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:25,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:25,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:25,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:33:25,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:33:25,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:25,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 14:33:25,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-19 14:33:25,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-19 14:33:25,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824695453] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:33:25,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:33:25,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-02-19 14:33:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920757955] [2024-02-19 14:33:25,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:33:25,514 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 14:33:25,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 14:33:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-02-19 14:33:25,515 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:25,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 162 transitions, 2015 flow. Second operand has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 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) [2024-02-19 14:33:25,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:25,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:25,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:25,714 INFO L124 PetriNetUnfolderBase]: 625/946 cut-off events. [2024-02-19 14:33:25,715 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-02-19 14:33:25,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6710 conditions, 946 events. 625/946 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3359 event pairs, 28 based on Foata normal form. 0/675 useless extension candidates. Maximal degree in co-relation 4979. Up to 942 conditions per place. [2024-02-19 14:33:25,722 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 121 selfloop transitions, 18 changer transitions 25/165 dead transitions. [2024-02-19 14:33:25,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 165 transitions, 2379 flow [2024-02-19 14:33:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:33:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:33:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-02-19 14:33:25,723 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3203463203463203 [2024-02-19 14:33:25,724 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2024-02-19 14:33:25,724 INFO L507 AbstractCegarLoop]: Abstraction has has 54 places, 165 transitions, 2379 flow [2024-02-19 14:33:25,724 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 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) [2024-02-19 14:33:25,725 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:25,725 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:33:25,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:25,937 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:25,937 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:25,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:25,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1054845318, now seen corresponding path program 5 times [2024-02-19 14:33:25,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:25,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071357511] [2024-02-19 14:33:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:25,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:26,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:26,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071357511] [2024-02-19 14:33:26,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071357511] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:26,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496224933] [2024-02-19 14:33:26,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:33:26,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:26,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:26,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:26,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-19 14:33:26,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-19 14:33:26,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:26,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:33:26,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:26,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:33:26,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496224933] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:33:26,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:33:26,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-02-19 14:33:26,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286320195] [2024-02-19 14:33:26,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:26,599 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:33:26,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:33:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:33:26,600 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:26,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 165 transitions, 2379 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-02-19 14:33:26,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:26,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:26,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:26,756 INFO L124 PetriNetUnfolderBase]: 517/780 cut-off events. [2024-02-19 14:33:26,756 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-02-19 14:33:26,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6313 conditions, 780 events. 517/780 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2666 event pairs, 28 based on Foata normal form. 0/575 useless extension candidates. Maximal degree in co-relation 5024. Up to 777 conditions per place. [2024-02-19 14:33:26,761 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 103 selfloop transitions, 12 changer transitions 23/139 dead transitions. [2024-02-19 14:33:26,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 139 transitions, 2270 flow [2024-02-19 14:33:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:33:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:33:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-02-19 14:33:26,776 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-02-19 14:33:26,777 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2024-02-19 14:33:26,777 INFO L507 AbstractCegarLoop]: Abstraction has has 57 places, 139 transitions, 2270 flow [2024-02-19 14:33:26,777 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-02-19 14:33:26,777 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:26,777 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:26,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:26,977 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:26,978 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:26,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:26,978 INFO L85 PathProgramCache]: Analyzing trace with hash 991954505, now seen corresponding path program 1 times [2024-02-19 14:33:26,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:26,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4698826] [2024-02-19 14:33:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:26,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:27,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:27,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4698826] [2024-02-19 14:33:27,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4698826] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:27,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911853446] [2024-02-19 14:33:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:27,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:27,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:27,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:27,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-19 14:33:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:27,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:33:27,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:27,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911853446] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:27,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:33:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2024-02-19 14:33:27,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632399449] [2024-02-19 14:33:27,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:27,387 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:33:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:33:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-02-19 14:33:27,388 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:27,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 139 transitions, 2270 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:27,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:27,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:27,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:27,566 INFO L124 PetriNetUnfolderBase]: 575/862 cut-off events. [2024-02-19 14:33:27,566 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-02-19 14:33:27,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7833 conditions, 862 events. 575/862 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2916 event pairs, 10 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 6277. Up to 859 conditions per place. [2024-02-19 14:33:27,572 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 145 selfloop transitions, 17 changer transitions 27/190 dead transitions. [2024-02-19 14:33:27,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 190 transitions, 3479 flow [2024-02-19 14:33:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:33:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:33:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-02-19 14:33:27,573 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.503030303030303 [2024-02-19 14:33:27,574 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-02-19 14:33:27,574 INFO L507 AbstractCegarLoop]: Abstraction has has 61 places, 190 transitions, 3479 flow [2024-02-19 14:33:27,574 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:27,574 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:27,574 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:27,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:27,786 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:27,787 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:27,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:27,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1646948597, now seen corresponding path program 2 times [2024-02-19 14:33:27,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:27,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111609269] [2024-02-19 14:33:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:27,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:27,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:27,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111609269] [2024-02-19 14:33:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111609269] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:33:27,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:33:27,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:33:27,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32221734] [2024-02-19 14:33:27,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:27,983 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:33:27,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:27,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:33:27,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:33:27,984 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:27,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 190 transitions, 3479 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:27,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:27,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:27,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:28,265 INFO L124 PetriNetUnfolderBase]: 939/1409 cut-off events. [2024-02-19 14:33:28,266 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-02-19 14:33:28,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14198 conditions, 1409 events. 939/1409 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5466 event pairs, 10 based on Foata normal form. 0/1038 useless extension candidates. Maximal degree in co-relation 11490. Up to 1405 conditions per place. [2024-02-19 14:33:28,277 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 236 selfloop transitions, 24 changer transitions 74/335 dead transitions. [2024-02-19 14:33:28,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 335 transitions, 6817 flow [2024-02-19 14:33:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:33:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:33:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-02-19 14:33:28,278 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-02-19 14:33:28,278 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2024-02-19 14:33:28,278 INFO L507 AbstractCegarLoop]: Abstraction has has 65 places, 335 transitions, 6817 flow [2024-02-19 14:33:28,279 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:28,279 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:28,279 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:28,279 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-19 14:33:28,279 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:28,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:28,280 INFO L85 PathProgramCache]: Analyzing trace with hash -868351277, now seen corresponding path program 3 times [2024-02-19 14:33:28,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:28,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438066256] [2024-02-19 14:33:28,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:28,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:28,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:28,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438066256] [2024-02-19 14:33:28,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438066256] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:33:28,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:33:28,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:33:28,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194826141] [2024-02-19 14:33:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:28,430 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:33:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:33:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:33:28,430 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:28,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 335 transitions, 6817 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:28,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:28,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:28,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:28,748 INFO L124 PetriNetUnfolderBase]: 1045/1568 cut-off events. [2024-02-19 14:33:28,748 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-02-19 14:33:28,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17362 conditions, 1568 events. 1045/1568 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6262 event pairs, 10 based on Foata normal form. 0/1153 useless extension candidates. Maximal degree in co-relation 14063. Up to 1564 conditions per place. [2024-02-19 14:33:28,762 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 249 selfloop transitions, 27 changer transitions 96/373 dead transitions. [2024-02-19 14:33:28,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 373 transitions, 8333 flow [2024-02-19 14:33:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:33:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:33:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-02-19 14:33:28,763 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-02-19 14:33:28,764 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2024-02-19 14:33:28,764 INFO L507 AbstractCegarLoop]: Abstraction has has 69 places, 373 transitions, 8333 flow [2024-02-19 14:33:28,764 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:28,764 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:28,764 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:28,765 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-19 14:33:28,765 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:28,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash -264840995, now seen corresponding path program 4 times [2024-02-19 14:33:28,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:28,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237309117] [2024-02-19 14:33:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:28,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:29,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237309117] [2024-02-19 14:33:29,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237309117] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061974405] [2024-02-19 14:33:29,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:33:29,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:29,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:29,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:29,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-19 14:33:29,180 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:33:29,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:29,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:33:29,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:29,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:29,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061974405] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:29,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:33:29,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-02-19 14:33:29,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689558112] [2024-02-19 14:33:29,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:29,269 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:33:29,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:29,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:33:29,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:33:29,269 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:29,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 373 transitions, 8333 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:29,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:29,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:29,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:29,607 INFO L124 PetriNetUnfolderBase]: 1103/1650 cut-off events. [2024-02-19 14:33:29,607 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2024-02-19 14:33:29,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19915 conditions, 1650 events. 1103/1650 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6685 event pairs, 10 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 16176. Up to 1646 conditions per place. [2024-02-19 14:33:29,619 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 265 selfloop transitions, 30 changer transitions 96/392 dead transitions. [2024-02-19 14:33:29,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 392 transitions, 9536 flow [2024-02-19 14:33:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:33:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:33:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-02-19 14:33:29,620 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-19 14:33:29,620 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 40 predicate places. [2024-02-19 14:33:29,620 INFO L507 AbstractCegarLoop]: Abstraction has has 73 places, 392 transitions, 9536 flow [2024-02-19 14:33:29,620 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:29,621 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:29,621 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:29,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:29,832 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:29,833 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:29,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:29,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1956563815, now seen corresponding path program 5 times [2024-02-19 14:33:29,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:29,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486976511] [2024-02-19 14:33:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:29,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:30,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:30,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486976511] [2024-02-19 14:33:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486976511] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:33:30,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:33:30,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:33:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156071355] [2024-02-19 14:33:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:30,021 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:33:30,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:33:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:33:30,022 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:30,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 392 transitions, 9536 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:30,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:30,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:30,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:30,390 INFO L124 PetriNetUnfolderBase]: 1089/1636 cut-off events. [2024-02-19 14:33:30,390 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-02-19 14:33:30,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21382 conditions, 1636 events. 1089/1636 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6667 event pairs, 10 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 17389. Up to 1632 conditions per place. [2024-02-19 14:33:30,401 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 253 selfloop transitions, 24 changer transitions 111/389 dead transitions. [2024-02-19 14:33:30,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 389 transitions, 10240 flow [2024-02-19 14:33:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:33:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:33:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-02-19 14:33:30,402 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.503030303030303 [2024-02-19 14:33:30,402 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2024-02-19 14:33:30,402 INFO L507 AbstractCegarLoop]: Abstraction has has 77 places, 389 transitions, 10240 flow [2024-02-19 14:33:30,403 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:30,403 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:30,403 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:30,403 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-19 14:33:30,403 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:30,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:30,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1899082699, now seen corresponding path program 6 times [2024-02-19 14:33:30,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:30,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140572504] [2024-02-19 14:33:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:30,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:30,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:30,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140572504] [2024-02-19 14:33:30,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140572504] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:30,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349888261] [2024-02-19 14:33:30,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:33:30,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:30,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:30,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:30,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-19 14:33:30,859 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 14:33:30,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:30,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:33:30,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:30,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:33:30,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349888261] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:30,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:33:30,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2024-02-19 14:33:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003254706] [2024-02-19 14:33:30,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:33:30,922 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:33:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:33:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-19 14:33:30,923 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:30,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 389 transitions, 10240 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:30,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:30,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:30,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:31,264 INFO L124 PetriNetUnfolderBase]: 1085/1625 cut-off events. [2024-02-19 14:33:31,264 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-02-19 14:33:31,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22873 conditions, 1625 events. 1085/1625 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6597 event pairs, 10 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 18722. Up to 1622 conditions per place. [2024-02-19 14:33:31,275 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 241 selfloop transitions, 32 changer transitions 111/385 dead transitions. [2024-02-19 14:33:31,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 385 transitions, 10898 flow [2024-02-19 14:33:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:33:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:33:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-02-19 14:33:31,276 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2024-02-19 14:33:31,277 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 48 predicate places. [2024-02-19 14:33:31,277 INFO L507 AbstractCegarLoop]: Abstraction has has 81 places, 385 transitions, 10898 flow [2024-02-19 14:33:31,277 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:33:31,278 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:31,278 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:31,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:31,489 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-19 14:33:31,489 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:31,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:31,490 INFO L85 PathProgramCache]: Analyzing trace with hash -812660753, now seen corresponding path program 1 times [2024-02-19 14:33:31,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:31,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30725625] [2024-02-19 14:33:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:32,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:32,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30725625] [2024-02-19 14:33:32,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30725625] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:32,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693759501] [2024-02-19 14:33:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:32,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:32,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:32,301 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:32,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-19 14:33:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:32,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:33:32,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:32,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:33:32,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-02-19 14:33:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:32,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:33,040 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-02-19 14:33:33,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-02-19 14:33:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693759501] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:33:33,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:33:33,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 28 [2024-02-19 14:33:33,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561511622] [2024-02-19 14:33:33,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:33:33,178 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-19 14:33:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-19 14:33:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-02-19 14:33:33,180 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:33,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 385 transitions, 10898 flow. Second operand has 28 states, 28 states have (on average 6.571428571428571) internal successors, (184), 28 states have internal predecessors, (184), 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) [2024-02-19 14:33:33,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:33,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:33,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:34,824 INFO L124 PetriNetUnfolderBase]: 2573/3885 cut-off events. [2024-02-19 14:33:34,824 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-02-19 14:33:34,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58567 conditions, 3885 events. 2573/3885 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 19305 event pairs, 0 based on Foata normal form. 1/2813 useless extension candidates. Maximal degree in co-relation 54570. Up to 3880 conditions per place. [2024-02-19 14:33:34,855 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 443 selfloop transitions, 133 changer transitions 266/843 dead transitions. [2024-02-19 14:33:34,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 843 transitions, 25688 flow [2024-02-19 14:33:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-19 14:33:34,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-19 14:33:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 246 transitions. [2024-02-19 14:33:34,857 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4385026737967914 [2024-02-19 14:33:34,857 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 64 predicate places. [2024-02-19 14:33:34,857 INFO L507 AbstractCegarLoop]: Abstraction has has 97 places, 843 transitions, 25688 flow [2024-02-19 14:33:34,857 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.571428571428571) internal successors, (184), 28 states have internal predecessors, (184), 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) [2024-02-19 14:33:34,858 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:34,858 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:34,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:35,069 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-19 14:33:35,070 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:35,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1203502279, now seen corresponding path program 2 times [2024-02-19 14:33:35,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:35,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511218480] [2024-02-19 14:33:35,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:35,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:35,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511218480] [2024-02-19 14:33:35,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511218480] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:35,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826270876] [2024-02-19 14:33:35,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:33:35,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:35,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:35,876 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:35,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-19 14:33:36,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:33:36,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:36,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:33:36,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:36,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:33:36,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-02-19 14:33:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:36,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:36,613 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-02-19 14:33:36,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-02-19 14:33:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:36,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826270876] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:33:36,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:33:36,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 25 [2024-02-19 14:33:36,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111285366] [2024-02-19 14:33:36,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:33:36,684 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:33:36,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:36,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:33:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:33:36,685 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:36,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 843 transitions, 25688 flow. Second operand has 25 states, 25 states have (on average 6.56) internal successors, (164), 25 states have internal predecessors, (164), 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) [2024-02-19 14:33:36,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:36,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:36,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:38,726 INFO L124 PetriNetUnfolderBase]: 2901/4365 cut-off events. [2024-02-19 14:33:38,726 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-02-19 14:33:38,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70160 conditions, 4365 events. 2901/4365 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22100 event pairs, 8 based on Foata normal form. 1/3123 useless extension candidates. Maximal degree in co-relation 65315. Up to 4360 conditions per place. [2024-02-19 14:33:38,760 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 486 selfloop transitions, 150 changer transitions 392/1029 dead transitions. [2024-02-19 14:33:38,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 1029 transitions, 33420 flow [2024-02-19 14:33:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-19 14:33:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-19 14:33:38,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 300 transitions. [2024-02-19 14:33:38,762 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-02-19 14:33:38,763 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 84 predicate places. [2024-02-19 14:33:38,763 INFO L507 AbstractCegarLoop]: Abstraction has has 117 places, 1029 transitions, 33420 flow [2024-02-19 14:33:38,764 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.56) internal successors, (164), 25 states have internal predecessors, (164), 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) [2024-02-19 14:33:38,764 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:38,764 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:38,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:38,976 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-19 14:33:38,976 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:38,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:38,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1440914243, now seen corresponding path program 3 times [2024-02-19 14:33:38,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:38,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544897326] [2024-02-19 14:33:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:38,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:39,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544897326] [2024-02-19 14:33:39,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544897326] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416685901] [2024-02-19 14:33:39,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:33:39,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:39,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:39,713 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:39,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-19 14:33:39,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 14:33:39,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:39,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 36 conjunts are in the unsatisfiable core [2024-02-19 14:33:39,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:40,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:33:40,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-02-19 14:33:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:40,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:40,641 INFO L349 Elim1Store]: treesize reduction 36, result has 70.2 percent of original size [2024-02-19 14:33:40,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 100 [2024-02-19 14:33:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:40,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416685901] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:33:40,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:33:40,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 26 [2024-02-19 14:33:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341544680] [2024-02-19 14:33:40,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:33:40,757 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 14:33:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 14:33:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2024-02-19 14:33:40,758 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:40,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 1029 transitions, 33420 flow. Second operand has 26 states, 26 states have (on average 6.461538461538462) internal successors, (168), 26 states have internal predecessors, (168), 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) [2024-02-19 14:33:40,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:40,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:40,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:43,628 INFO L124 PetriNetUnfolderBase]: 3131/4739 cut-off events. [2024-02-19 14:33:43,628 INFO L125 PetriNetUnfolderBase]: For 656/656 co-relation queries the response was YES. [2024-02-19 14:33:43,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80897 conditions, 4739 events. 3131/4739 cut-off events. For 656/656 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24535 event pairs, 22 based on Foata normal form. 2/3374 useless extension candidates. Maximal degree in co-relation 75214. Up to 4733 conditions per place. [2024-02-19 14:33:43,672 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 511 selfloop transitions, 164 changer transitions 435/1111 dead transitions. [2024-02-19 14:33:43,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 1111 transitions, 38321 flow [2024-02-19 14:33:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-02-19 14:33:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-02-19 14:33:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 336 transitions. [2024-02-19 14:33:43,674 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4072727272727273 [2024-02-19 14:33:43,674 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 108 predicate places. [2024-02-19 14:33:43,674 INFO L507 AbstractCegarLoop]: Abstraction has has 141 places, 1111 transitions, 38321 flow [2024-02-19 14:33:43,675 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.461538461538462) internal successors, (168), 26 states have internal predecessors, (168), 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) [2024-02-19 14:33:43,675 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:43,675 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:43,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-02-19 14:33:43,886 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-19 14:33:43,887 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:43,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2019128519, now seen corresponding path program 4 times [2024-02-19 14:33:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:43,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233764419] [2024-02-19 14:33:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:43,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:44,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233764419] [2024-02-19 14:33:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233764419] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463856743] [2024-02-19 14:33:44,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:33:44,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:44,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:44,631 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:44,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-19 14:33:44,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:33:44,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:44,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:33:44,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:44,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:33:44,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-02-19 14:33:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:44,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:45,287 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-02-19 14:33:45,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-02-19 14:33:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:45,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463856743] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:33:45,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:33:45,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 28 [2024-02-19 14:33:45,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111774019] [2024-02-19 14:33:45,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:33:45,371 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-19 14:33:45,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-19 14:33:45,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2024-02-19 14:33:45,373 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:45,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 1111 transitions, 38321 flow. Second operand has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 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) [2024-02-19 14:33:45,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:45,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:45,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:49,532 INFO L124 PetriNetUnfolderBase]: 3211/4865 cut-off events. [2024-02-19 14:33:49,532 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-02-19 14:33:49,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87913 conditions, 4865 events. 3211/4865 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 25321 event pairs, 10 based on Foata normal form. 2/3454 useless extension candidates. Maximal degree in co-relation 81573. Up to 4859 conditions per place. [2024-02-19 14:33:49,580 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 546 selfloop transitions, 149 changer transitions 437/1133 dead transitions. [2024-02-19 14:33:49,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 1133 transitions, 41351 flow [2024-02-19 14:33:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-19 14:33:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-19 14:33:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 227 transitions. [2024-02-19 14:33:49,589 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42992424242424243 [2024-02-19 14:33:49,589 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 123 predicate places. [2024-02-19 14:33:49,589 INFO L507 AbstractCegarLoop]: Abstraction has has 156 places, 1133 transitions, 41351 flow [2024-02-19 14:33:49,590 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 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) [2024-02-19 14:33:49,590 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:49,590 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:49,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-02-19 14:33:49,796 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-19 14:33:49,797 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:49,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:49,797 INFO L85 PathProgramCache]: Analyzing trace with hash 697156013, now seen corresponding path program 5 times [2024-02-19 14:33:49,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:49,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768992563] [2024-02-19 14:33:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:49,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:50,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768992563] [2024-02-19 14:33:50,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768992563] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105566358] [2024-02-19 14:33:50,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:33:50,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:50,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:50,607 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:50,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-19 14:33:50,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-19 14:33:50,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:50,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 36 conjunts are in the unsatisfiable core [2024-02-19 14:33:50,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:51,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:33:51,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-02-19 14:33:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:51,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:51,642 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-02-19 14:33:51,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-02-19 14:33:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:51,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105566358] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:33:51,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:33:51,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 24 [2024-02-19 14:33:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003666579] [2024-02-19 14:33:51,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:33:51,761 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:33:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:33:51,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:33:51,762 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:51,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 1133 transitions, 41351 flow. Second operand has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 24 states have internal predecessors, (155), 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) [2024-02-19 14:33:51,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:51,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:51,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:54,403 INFO L124 PetriNetUnfolderBase]: 3471/5253 cut-off events. [2024-02-19 14:33:54,403 INFO L125 PetriNetUnfolderBase]: For 764/764 co-relation queries the response was YES. [2024-02-19 14:33:54,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100177 conditions, 5253 events. 3471/5253 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 27720 event pairs, 10 based on Foata normal form. 1/3703 useless extension candidates. Maximal degree in co-relation 92834. Up to 5247 conditions per place. [2024-02-19 14:33:54,454 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 585 selfloop transitions, 156 changer transitions 453/1195 dead transitions. [2024-02-19 14:33:54,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1195 transitions, 46013 flow [2024-02-19 14:33:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-19 14:33:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-19 14:33:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 283 transitions. [2024-02-19 14:33:54,456 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4287878787878788 [2024-02-19 14:33:54,456 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 142 predicate places. [2024-02-19 14:33:54,456 INFO L507 AbstractCegarLoop]: Abstraction has has 175 places, 1195 transitions, 46013 flow [2024-02-19 14:33:54,457 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 24 states have internal predecessors, (155), 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) [2024-02-19 14:33:54,457 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:54,457 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:54,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-19 14:33:54,672 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-19 14:33:54,672 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:33:54,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:33:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1154231093, now seen corresponding path program 6 times [2024-02-19 14:33:54,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:33:54,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009923654] [2024-02-19 14:33:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:33:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:33:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:33:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:55,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:33:55,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009923654] [2024-02-19 14:33:55,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009923654] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:33:55,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279265070] [2024-02-19 14:33:55,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:33:55,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:33:55,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:33:55,613 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:33:55,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-19 14:33:55,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 14:33:55,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:33:55,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:33:55,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:33:56,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:33:56,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-02-19 14:33:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:56,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:33:56,414 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-02-19 14:33:56,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-02-19 14:33:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:33:56,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279265070] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:33:56,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:33:56,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 26 [2024-02-19 14:33:56,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918749450] [2024-02-19 14:33:56,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:33:56,498 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 14:33:56,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:33:56,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 14:33:56,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-02-19 14:33:56,499 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:33:56,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 1195 transitions, 46013 flow. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 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) [2024-02-19 14:33:56,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:33:56,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:33:56,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:33:59,875 INFO L124 PetriNetUnfolderBase]: 4033/6092 cut-off events. [2024-02-19 14:33:59,875 INFO L125 PetriNetUnfolderBase]: For 872/872 co-relation queries the response was YES. [2024-02-19 14:33:59,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122221 conditions, 6092 events. 4033/6092 cut-off events. For 872/872 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 32959 event pairs, 30 based on Foata normal form. 1/4264 useless extension candidates. Maximal degree in co-relation 113337. Up to 6084 conditions per place. [2024-02-19 14:33:59,938 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 656 selfloop transitions, 193 changer transitions 518/1368 dead transitions. [2024-02-19 14:33:59,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 1368 transitions, 55405 flow [2024-02-19 14:33:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-19 14:33:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-19 14:33:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 332 transitions. [2024-02-19 14:33:59,940 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43741765480895917 [2024-02-19 14:33:59,940 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 164 predicate places. [2024-02-19 14:33:59,941 INFO L507 AbstractCegarLoop]: Abstraction has has 197 places, 1368 transitions, 55405 flow [2024-02-19 14:33:59,941 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 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) [2024-02-19 14:33:59,941 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:33:59,941 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:33:59,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-02-19 14:34:00,153 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:00,154 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:34:00,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:34:00,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1512782253, now seen corresponding path program 7 times [2024-02-19 14:34:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:34:00,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724223749] [2024-02-19 14:34:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:34:00,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:34:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:34:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:00,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:34:00,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724223749] [2024-02-19 14:34:00,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724223749] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:34:00,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571395906] [2024-02-19 14:34:00,980 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:34:00,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:00,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:34:00,982 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:34:01,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-19 14:34:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:34:01,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:34:01,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:34:01,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:34:01,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-02-19 14:34:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:01,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:34:01,768 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-02-19 14:34:01,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-02-19 14:34:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:01,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571395906] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:34:01,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:34:01,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 28 [2024-02-19 14:34:01,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274723155] [2024-02-19 14:34:01,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:34:01,867 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-19 14:34:01,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:34:01,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-19 14:34:01,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-02-19 14:34:01,868 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:34:01,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 1368 transitions, 55405 flow. Second operand has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 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) [2024-02-19 14:34:01,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:34:01,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:34:01,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:34:05,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 14:34:09,243 INFO L124 PetriNetUnfolderBase]: 4069/6160 cut-off events. [2024-02-19 14:34:09,243 INFO L125 PetriNetUnfolderBase]: For 873/873 co-relation queries the response was YES. [2024-02-19 14:34:09,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129745 conditions, 6160 events. 4069/6160 cut-off events. For 873/873 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 33514 event pairs, 26 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 120168. Up to 6152 conditions per place. [2024-02-19 14:34:09,326 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 706 selfloop transitions, 161 changer transitions 520/1388 dead transitions. [2024-02-19 14:34:09,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 1388 transitions, 58997 flow [2024-02-19 14:34:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-19 14:34:09,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-19 14:34:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 238 transitions. [2024-02-19 14:34:09,327 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-02-19 14:34:09,328 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 180 predicate places. [2024-02-19 14:34:09,328 INFO L507 AbstractCegarLoop]: Abstraction has has 213 places, 1388 transitions, 58997 flow [2024-02-19 14:34:09,328 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 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) [2024-02-19 14:34:09,328 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:34:09,328 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:34:09,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-02-19 14:34:09,540 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:09,540 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:34:09,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:34:09,541 INFO L85 PathProgramCache]: Analyzing trace with hash 934567977, now seen corresponding path program 8 times [2024-02-19 14:34:09,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:34:09,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240096928] [2024-02-19 14:34:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:34:09,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:34:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:34:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:34:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240096928] [2024-02-19 14:34:10,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240096928] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:34:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850766273] [2024-02-19 14:34:10,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:34:10,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:10,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:34:10,464 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:34:10,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-19 14:34:10,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:34:10,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:34:10,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 36 conjunts are in the unsatisfiable core [2024-02-19 14:34:10,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:34:10,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:34:10,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-02-19 14:34:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:10,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:34:11,322 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-02-19 14:34:11,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-02-19 14:34:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850766273] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:34:11,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:34:11,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 23 [2024-02-19 14:34:11,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205710505] [2024-02-19 14:34:11,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:34:11,431 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 14:34:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:34:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 14:34:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-02-19 14:34:11,432 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:34:11,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 1388 transitions, 58997 flow. Second operand has 23 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 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) [2024-02-19 14:34:11,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:34:11,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:34:11,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:34:14,873 INFO L124 PetriNetUnfolderBase]: 4069/6158 cut-off events. [2024-02-19 14:34:14,874 INFO L125 PetriNetUnfolderBase]: For 897/897 co-relation queries the response was YES. [2024-02-19 14:34:14,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135877 conditions, 6158 events. 4069/6158 cut-off events. For 897/897 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 33480 event pairs, 34 based on Foata normal form. 1/4308 useless extension candidates. Maximal degree in co-relation 125875. Up to 6151 conditions per place. [2024-02-19 14:34:14,941 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 693 selfloop transitions, 170 changer transitions 523/1387 dead transitions. [2024-02-19 14:34:14,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1387 transitions, 61727 flow [2024-02-19 14:34:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-19 14:34:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-19 14:34:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 262 transitions. [2024-02-19 14:34:14,942 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4178628389154705 [2024-02-19 14:34:14,943 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 198 predicate places. [2024-02-19 14:34:14,943 INFO L507 AbstractCegarLoop]: Abstraction has has 231 places, 1387 transitions, 61727 flow [2024-02-19 14:34:14,943 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 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) [2024-02-19 14:34:14,943 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:34:14,943 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:34:14,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-19 14:34:15,155 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:15,156 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:34:15,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:34:15,156 INFO L85 PathProgramCache]: Analyzing trace with hash 809958853, now seen corresponding path program 9 times [2024-02-19 14:34:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:34:15,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437644325] [2024-02-19 14:34:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:34:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:34:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:34:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:16,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:34:16,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437644325] [2024-02-19 14:34:16,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437644325] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:34:16,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980719829] [2024-02-19 14:34:16,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:34:16,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:16,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:34:16,042 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:34:16,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-19 14:34:16,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:34:16,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:34:16,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:34:16,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:34:16,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:34:16,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2024-02-19 14:34:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:16,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:34:17,161 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-02-19 14:34:17,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-02-19 14:34:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:22,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980719829] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:34:22,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:34:22,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 28 [2024-02-19 14:34:22,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323300186] [2024-02-19 14:34:22,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:34:22,556 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-19 14:34:22,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:34:22,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-19 14:34:22,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2024-02-19 14:34:22,557 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:34:22,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 1387 transitions, 61727 flow. Second operand has 28 states, 28 states have (on average 6.464285714285714) internal successors, (181), 28 states have internal predecessors, (181), 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) [2024-02-19 14:34:22,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:34:22,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:34:22,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:34:26,141 INFO L124 PetriNetUnfolderBase]: 4560/6917 cut-off events. [2024-02-19 14:34:26,141 INFO L125 PetriNetUnfolderBase]: For 1016/1016 co-relation queries the response was YES. [2024-02-19 14:34:26,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159535 conditions, 6917 events. 4560/6917 cut-off events. For 1016/1016 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 38713 event pairs, 8 based on Foata normal form. 2/4822 useless extension candidates. Maximal degree in co-relation 147173. Up to 6909 conditions per place. [2024-02-19 14:34:26,242 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 839 selfloop transitions, 154 changer transitions 568/1562 dead transitions. [2024-02-19 14:34:26,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1562 transitions, 72654 flow [2024-02-19 14:34:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-19 14:34:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-19 14:34:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 264 transitions. [2024-02-19 14:34:26,256 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-02-19 14:34:26,258 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 217 predicate places. [2024-02-19 14:34:26,258 INFO L507 AbstractCegarLoop]: Abstraction has has 250 places, 1562 transitions, 72654 flow [2024-02-19 14:34:26,259 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.464285714285714) internal successors, (181), 28 states have internal predecessors, (181), 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) [2024-02-19 14:34:26,259 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:34:26,259 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:34:26,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-19 14:34:26,472 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:26,472 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:34:26,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:34:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1721777669, now seen corresponding path program 10 times [2024-02-19 14:34:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:34:26,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826491840] [2024-02-19 14:34:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:34:26,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:34:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:34:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:27,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:34:27,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826491840] [2024-02-19 14:34:27,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826491840] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:34:27,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365708344] [2024-02-19 14:34:27,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:34:27,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:27,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:34:27,376 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:34:27,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-19 14:34:27,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:34:27,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:34:27,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:34:27,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:34:27,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:34:27,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-02-19 14:34:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:27,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:34:28,182 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-02-19 14:34:28,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-02-19 14:34:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:36,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365708344] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:34:36,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:34:36,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 27 [2024-02-19 14:34:36,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246918621] [2024-02-19 14:34:36,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:34:36,517 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-02-19 14:34:36,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:34:36,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-02-19 14:34:36,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2024-02-19 14:34:36,518 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:34:36,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 1562 transitions, 72654 flow. Second operand has 27 states, 27 states have (on average 6.444444444444445) internal successors, (174), 27 states have internal predecessors, (174), 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) [2024-02-19 14:34:36,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:34:36,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:34:36,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:34:41,494 INFO L124 PetriNetUnfolderBase]: 5566/8496 cut-off events. [2024-02-19 14:34:41,495 INFO L125 PetriNetUnfolderBase]: For 1272/1272 co-relation queries the response was YES. [2024-02-19 14:34:41,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204413 conditions, 8496 events. 5566/8496 cut-off events. For 1272/1272 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 49937 event pairs, 36 based on Foata normal form. 2/5897 useless extension candidates. Maximal degree in co-relation 187500. Up to 8484 conditions per place. [2024-02-19 14:34:41,582 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 1024 selfloop transitions, 183 changer transitions 699/1907 dead transitions. [2024-02-19 14:34:41,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1907 transitions, 92591 flow [2024-02-19 14:34:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-19 14:34:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-19 14:34:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 276 transitions. [2024-02-19 14:34:41,584 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-02-19 14:34:41,584 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 236 predicate places. [2024-02-19 14:34:41,584 INFO L507 AbstractCegarLoop]: Abstraction has has 269 places, 1907 transitions, 92591 flow [2024-02-19 14:34:41,585 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.444444444444445) internal successors, (174), 27 states have internal predecessors, (174), 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) [2024-02-19 14:34:41,585 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:34:41,585 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:34:41,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-19 14:34:41,797 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:41,797 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:34:41,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:34:41,798 INFO L85 PathProgramCache]: Analyzing trace with hash 611663369, now seen corresponding path program 11 times [2024-02-19 14:34:41,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:34:41,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160858066] [2024-02-19 14:34:41,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:34:41,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:34:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:34:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:42,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:34:42,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160858066] [2024-02-19 14:34:42,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160858066] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:34:42,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457637489] [2024-02-19 14:34:42,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:34:42,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:42,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:34:42,464 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:34:42,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-19 14:34:43,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-19 14:34:43,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:34:43,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-19 14:34:43,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:34:43,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:34:43,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2024-02-19 14:34:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:43,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:34:43,812 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-02-19 14:34:43,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-02-19 14:34:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457637489] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:34:49,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:34:49,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 9] total 30 [2024-02-19 14:34:49,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627437468] [2024-02-19 14:34:49,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:34:49,903 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-19 14:34:49,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:34:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-19 14:34:49,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2024-02-19 14:34:49,904 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:34:49,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 1907 transitions, 92591 flow. Second operand has 30 states, 30 states have (on average 6.5) internal successors, (195), 30 states have internal predecessors, (195), 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) [2024-02-19 14:34:49,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:34:49,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:34:49,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:34:55,355 INFO L124 PetriNetUnfolderBase]: 5658/8638 cut-off events. [2024-02-19 14:34:55,355 INFO L125 PetriNetUnfolderBase]: For 1292/1292 co-relation queries the response was YES. [2024-02-19 14:34:55,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216464 conditions, 8638 events. 5658/8638 cut-off events. For 1292/1292 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 50870 event pairs, 40 based on Foata normal form. 2/5987 useless extension candidates. Maximal degree in co-relation 198401. Up to 8626 conditions per place. [2024-02-19 14:34:55,470 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 1043 selfloop transitions, 184 changer transitions 722/1950 dead transitions. [2024-02-19 14:34:55,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1950 transitions, 98586 flow [2024-02-19 14:34:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-19 14:34:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-19 14:34:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 262 transitions. [2024-02-19 14:34:55,471 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-02-19 14:34:55,472 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 255 predicate places. [2024-02-19 14:34:55,472 INFO L507 AbstractCegarLoop]: Abstraction has has 288 places, 1950 transitions, 98586 flow [2024-02-19 14:34:55,472 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.5) internal successors, (195), 30 states have internal predecessors, (195), 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) [2024-02-19 14:34:55,472 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:34:55,472 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:34:55,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-02-19 14:34:55,685 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:55,685 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:34:55,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:34:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash 849075333, now seen corresponding path program 12 times [2024-02-19 14:34:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:34:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029456558] [2024-02-19 14:34:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:34:55,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:34:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:34:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:56,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:34:56,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029456558] [2024-02-19 14:34:56,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029456558] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:34:56,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923770513] [2024-02-19 14:34:56,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:34:56,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:34:56,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:34:56,506 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:34:56,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-19 14:34:56,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-02-19 14:34:56,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:34:56,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 38 conjunts are in the unsatisfiable core [2024-02-19 14:34:56,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:34:56,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:34:56,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-02-19 14:34:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:34:57,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:34:57,562 INFO L349 Elim1Store]: treesize reduction 12, result has 94.1 percent of original size [2024-02-19 14:34:57,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 208 [2024-02-19 14:35:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:02,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923770513] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:35:02,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:35:02,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 26 [2024-02-19 14:35:02,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083839708] [2024-02-19 14:35:02,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:35:02,706 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 14:35:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:35:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 14:35:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-02-19 14:35:02,707 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:35:02,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1950 transitions, 98586 flow. Second operand has 26 states, 26 states have (on average 6.461538461538462) internal successors, (168), 26 states have internal predecessors, (168), 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) [2024-02-19 14:35:02,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:35:02,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:35:02,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:35:08,806 INFO L124 PetriNetUnfolderBase]: 5892/9014 cut-off events. [2024-02-19 14:35:08,807 INFO L125 PetriNetUnfolderBase]: For 1378/1378 co-relation queries the response was YES. [2024-02-19 14:35:08,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234857 conditions, 9014 events. 5892/9014 cut-off events. For 1378/1378 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 53606 event pairs, 26 based on Foata normal form. 4/6237 useless extension candidates. Maximal degree in co-relation 214920. Up to 9000 conditions per place. [2024-02-19 14:35:08,957 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 1085 selfloop transitions, 205 changer transitions 731/2022 dead transitions. [2024-02-19 14:35:08,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 2022 transitions, 106285 flow [2024-02-19 14:35:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-19 14:35:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-19 14:35:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 289 transitions. [2024-02-19 14:35:08,960 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.380764163372859 [2024-02-19 14:35:08,960 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 277 predicate places. [2024-02-19 14:35:08,961 INFO L507 AbstractCegarLoop]: Abstraction has has 310 places, 2022 transitions, 106285 flow [2024-02-19 14:35:08,961 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.461538461538462) internal successors, (168), 26 states have internal predecessors, (168), 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) [2024-02-19 14:35:08,961 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:35:08,961 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:35:08,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-02-19 14:35:09,176 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-02-19 14:35:09,177 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:35:09,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:35:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash -918311191, now seen corresponding path program 13 times [2024-02-19 14:35:09,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:35:09,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895069367] [2024-02-19 14:35:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:35:09,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:35:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:35:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:09,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:35:09,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895069367] [2024-02-19 14:35:09,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895069367] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:35:09,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784226966] [2024-02-19 14:35:09,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:35:09,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:35:09,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:35:09,951 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:35:09,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-19 14:35:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:35:10,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:35:10,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:35:10,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:35:10,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-02-19 14:35:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:10,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:35:14,988 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-02-19 14:35:14,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-02-19 14:35:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:20,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784226966] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:35:20,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:35:20,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 27 [2024-02-19 14:35:20,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891839045] [2024-02-19 14:35:20,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:35:20,467 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-02-19 14:35:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:35:20,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-02-19 14:35:20,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=600, Unknown=1, NotChecked=0, Total=702 [2024-02-19 14:35:20,468 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:35:20,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 2022 transitions, 106285 flow. Second operand has 27 states, 27 states have (on average 6.444444444444445) internal successors, (174), 27 states have internal predecessors, (174), 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) [2024-02-19 14:35:20,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:35:20,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:35:20,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:35:27,509 INFO L124 PetriNetUnfolderBase]: 6084/9319 cut-off events. [2024-02-19 14:35:27,509 INFO L125 PetriNetUnfolderBase]: For 1439/1439 co-relation queries the response was YES. [2024-02-19 14:35:27,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252126 conditions, 9319 events. 6084/9319 cut-off events. For 1439/1439 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 55931 event pairs, 66 based on Foata normal form. 3/6431 useless extension candidates. Maximal degree in co-relation 230203. Up to 9305 conditions per place. [2024-02-19 14:35:27,609 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 1177 selfloop transitions, 160 changer transitions 738/2076 dead transitions. [2024-02-19 14:35:27,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 2076 transitions, 113288 flow [2024-02-19 14:35:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-19 14:35:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-19 14:35:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 212 transitions. [2024-02-19 14:35:27,611 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3778966131907308 [2024-02-19 14:35:27,611 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 293 predicate places. [2024-02-19 14:35:27,611 INFO L507 AbstractCegarLoop]: Abstraction has has 326 places, 2076 transitions, 113288 flow [2024-02-19 14:35:27,611 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.444444444444445) internal successors, (174), 27 states have internal predecessors, (174), 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) [2024-02-19 14:35:27,611 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:35:27,612 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:35:27,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-19 14:35:27,823 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-02-19 14:35:27,823 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:35:27,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:35:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1492179287, now seen corresponding path program 14 times [2024-02-19 14:35:27,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:35:27,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429767052] [2024-02-19 14:35:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:35:27,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:35:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:35:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:28,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:35:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429767052] [2024-02-19 14:35:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429767052] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:35:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867500633] [2024-02-19 14:35:28,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:35:28,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:35:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:35:28,439 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:35:28,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-19 14:35:28,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:35:28,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:35:28,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:35:28,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:35:28,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:35:28,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2024-02-19 14:35:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:29,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:35:29,450 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-02-19 14:35:29,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-02-19 14:35:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:35,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867500633] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:35:35,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:35:35,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 28 [2024-02-19 14:35:35,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724330498] [2024-02-19 14:35:35,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:35:35,721 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-19 14:35:35,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:35:35,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-19 14:35:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-02-19 14:35:35,722 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:35:35,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 2076 transitions, 113288 flow. Second operand has 28 states, 28 states have (on average 6.464285714285714) internal successors, (181), 28 states have internal predecessors, (181), 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) [2024-02-19 14:35:35,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:35:35,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:35:35,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:35:42,899 INFO L124 PetriNetUnfolderBase]: 6524/10035 cut-off events. [2024-02-19 14:35:42,899 INFO L125 PetriNetUnfolderBase]: For 1535/1535 co-relation queries the response was YES. [2024-02-19 14:35:42,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281550 conditions, 10035 events. 6524/10035 cut-off events. For 1535/1535 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 61404 event pairs, 10 based on Foata normal form. 2/6920 useless extension candidates. Maximal degree in co-relation 256666. Up to 10021 conditions per place. [2024-02-19 14:35:43,049 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 1230 selfloop transitions, 181 changer transitions 827/2239 dead transitions. [2024-02-19 14:35:43,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 2239 transitions, 126689 flow [2024-02-19 14:35:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-19 14:35:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-19 14:35:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 252 transitions. [2024-02-19 14:35:43,051 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-02-19 14:35:43,051 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 312 predicate places. [2024-02-19 14:35:43,051 INFO L507 AbstractCegarLoop]: Abstraction has has 345 places, 2239 transitions, 126689 flow [2024-02-19 14:35:43,052 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.464285714285714) internal successors, (181), 28 states have internal predecessors, (181), 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) [2024-02-19 14:35:43,052 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:35:43,052 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:35:43,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-19 14:35:43,269 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-19 14:35:43,270 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:35:43,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:35:43,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1427289609, now seen corresponding path program 15 times [2024-02-19 14:35:43,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:35:43,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719023677] [2024-02-19 14:35:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:35:43,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:35:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:35:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:44,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:35:44,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719023677] [2024-02-19 14:35:44,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719023677] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:35:44,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540744768] [2024-02-19 14:35:44,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:35:44,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:35:44,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:35:44,025 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:35:44,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-19 14:35:44,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:35:44,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:35:44,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:35:44,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:35:44,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:35:44,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2024-02-19 14:35:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:44,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:35:45,170 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-02-19 14:35:45,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-02-19 14:35:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540744768] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:35:50,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:35:50,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 26 [2024-02-19 14:35:50,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977143397] [2024-02-19 14:35:50,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:35:50,511 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 14:35:50,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:35:50,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 14:35:50,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2024-02-19 14:35:50,512 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:35:50,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 2239 transitions, 126689 flow. Second operand has 26 states, 26 states have (on average 6.461538461538462) internal successors, (168), 26 states have internal predecessors, (168), 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) [2024-02-19 14:35:50,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:35:50,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:35:50,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:35:58,026 INFO L124 PetriNetUnfolderBase]: 6544/10068 cut-off events. [2024-02-19 14:35:58,027 INFO L125 PetriNetUnfolderBase]: For 1558/1558 co-relation queries the response was YES. [2024-02-19 14:35:58,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292592 conditions, 10068 events. 6544/10068 cut-off events. For 1558/1558 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 61754 event pairs, 20 based on Foata normal form. 3/6942 useless extension candidates. Maximal degree in co-relation 266627. Up to 10056 conditions per place. [2024-02-19 14:35:58,160 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 1241 selfloop transitions, 175 changer transitions 830/2247 dead transitions. [2024-02-19 14:35:58,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 2247 transitions, 131638 flow [2024-02-19 14:35:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-19 14:35:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-19 14:35:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 239 transitions. [2024-02-19 14:35:58,161 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40235690235690236 [2024-02-19 14:35:58,162 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 329 predicate places. [2024-02-19 14:35:58,162 INFO L507 AbstractCegarLoop]: Abstraction has has 362 places, 2247 transitions, 131638 flow [2024-02-19 14:35:58,162 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.461538461538462) internal successors, (168), 26 states have internal predecessors, (168), 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) [2024-02-19 14:35:58,162 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:35:58,162 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:35:58,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-19 14:35:58,366 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:35:58,367 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:35:58,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:35:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1798864955, now seen corresponding path program 16 times [2024-02-19 14:35:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:35:58,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011636003] [2024-02-19 14:35:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:35:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:35:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:35:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:59,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:35:59,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011636003] [2024-02-19 14:35:59,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011636003] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:35:59,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339910593] [2024-02-19 14:35:59,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:35:59,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:35:59,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:35:59,167 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:35:59,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-19 14:35:59,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:35:59,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:35:59,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:35:59,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:35:59,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:35:59,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-02-19 14:35:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:35:59,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:35:59,997 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-02-19 14:35:59,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-02-19 14:36:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:36:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339910593] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:36:03,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:36:03,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 26 [2024-02-19 14:36:03,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882007377] [2024-02-19 14:36:03,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:36:03,905 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 14:36:03,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:36:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 14:36:03,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-02-19 14:36:03,906 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:36:03,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 2247 transitions, 131638 flow. Second operand has 26 states, 26 states have (on average 6.346153846153846) internal successors, (165), 26 states have internal predecessors, (165), 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) [2024-02-19 14:36:03,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:36:03,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:36:03,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:36:07,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 14:36:12,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-19 14:36:20,194 INFO L124 PetriNetUnfolderBase]: 6646/10284 cut-off events. [2024-02-19 14:36:20,194 INFO L125 PetriNetUnfolderBase]: For 1623/1623 co-relation queries the response was YES. [2024-02-19 14:36:20,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309162 conditions, 10284 events. 6646/10284 cut-off events. For 1623/1623 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 64034 event pairs, 24 based on Foata normal form. 2/7097 useless extension candidates. Maximal degree in co-relation 281577. Up to 10272 conditions per place. [2024-02-19 14:36:20,324 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 1241 selfloop transitions, 184 changer transitions 917/2343 dead transitions. [2024-02-19 14:36:20,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 2343 transitions, 141974 flow [2024-02-19 14:36:20,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-19 14:36:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-19 14:36:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 209 transitions. [2024-02-19 14:36:20,327 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-02-19 14:36:20,328 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 345 predicate places. [2024-02-19 14:36:20,328 INFO L507 AbstractCegarLoop]: Abstraction has has 378 places, 2343 transitions, 141974 flow [2024-02-19 14:36:20,328 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.346153846153846) internal successors, (165), 26 states have internal predecessors, (165), 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) [2024-02-19 14:36:20,328 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:36:20,328 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:36:20,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-02-19 14:36:20,541 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-02-19 14:36:20,541 INFO L432 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:36:20,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:36:20,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1765108153, now seen corresponding path program 17 times [2024-02-19 14:36:20,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:36:20,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108329912] [2024-02-19 14:36:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:36:20,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:36:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:36:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:36:21,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:36:21,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108329912] [2024-02-19 14:36:21,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108329912] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:36:21,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048214743] [2024-02-19 14:36:21,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:36:21,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:36:21,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:36:21,450 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:36:21,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-19 14:36:21,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-19 14:36:21,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:36:21,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-19 14:36:21,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:36:22,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:36:22,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2024-02-19 14:36:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:36:22,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:36:22,876 INFO L349 Elim1Store]: treesize reduction 15, result has 95.3 percent of original size [2024-02-19 14:36:22,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 325 [2024-02-19 14:37:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:37:11,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048214743] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:11,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:11,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 9] total 30 [2024-02-19 14:37:11,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111676319] [2024-02-19 14:37:11,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:11,302 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-19 14:37:11,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:11,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-19 14:37:11,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2024-02-19 14:37:11,303 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:37:11,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 2343 transitions, 141974 flow. Second operand has 30 states, 30 states have (on average 6.566666666666666) internal successors, (197), 30 states have internal predecessors, (197), 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) [2024-02-19 14:37:11,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:11,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:37:11,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:19,877 INFO L124 PetriNetUnfolderBase]: 6838/10589 cut-off events. [2024-02-19 14:37:19,878 INFO L125 PetriNetUnfolderBase]: For 1668/1668 co-relation queries the response was YES. [2024-02-19 14:37:19,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328923 conditions, 10589 events. 6838/10589 cut-off events. For 1668/1668 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 66412 event pairs, 4 based on Foata normal form. 3/7293 useless extension candidates. Maximal degree in co-relation 299020. Up to 10577 conditions per place. [2024-02-19 14:37:20,051 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 1314 selfloop transitions, 158 changer transitions 924/2397 dead transitions. [2024-02-19 14:37:20,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 2397 transitions, 150051 flow [2024-02-19 14:37:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-02-19 14:37:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-02-19 14:37:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 199 transitions. [2024-02-19 14:37:20,056 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3768939393939394 [2024-02-19 14:37:20,057 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 360 predicate places. [2024-02-19 14:37:20,057 INFO L507 AbstractCegarLoop]: Abstraction has has 393 places, 2397 transitions, 150051 flow [2024-02-19 14:37:20,057 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.566666666666666) internal successors, (197), 30 states have internal predecessors, (197), 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) [2024-02-19 14:37:20,057 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:20,057 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:37:20,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-02-19 14:37:20,269 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:20,269 INFO L432 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:37:20,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash -611658233, now seen corresponding path program 18 times [2024-02-19 14:37:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:20,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943976018] [2024-02-19 14:37:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:37:21,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:21,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943976018] [2024-02-19 14:37:21,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943976018] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:21,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840552444] [2024-02-19 14:37:21,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:37:21,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:21,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:21,189 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:37:21,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-02-19 14:37:21,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 14:37:21,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:21,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-19 14:37:21,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:21,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:37:21,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-02-19 14:37:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:37:21,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:22,405 INFO L349 Elim1Store]: treesize reduction 15, result has 95.3 percent of original size [2024-02-19 14:37:22,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 325 [2024-02-19 14:38:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:38:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840552444] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:38:07,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:38:07,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 25 [2024-02-19 14:38:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846215451] [2024-02-19 14:38:07,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:38:07,158 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:38:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:38:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:38:07,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:38:07,159 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:38:07,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 2397 transitions, 150051 flow. Second operand has 25 states, 25 states have (on average 6.56) internal successors, (164), 25 states have internal predecessors, (164), 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) [2024-02-19 14:38:07,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:38:07,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:38:07,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:38:15,882 INFO L124 PetriNetUnfolderBase]: 7004/10846 cut-off events. [2024-02-19 14:38:15,882 INFO L125 PetriNetUnfolderBase]: For 1695/1695 co-relation queries the response was YES. [2024-02-19 14:38:15,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347752 conditions, 10846 events. 7004/10846 cut-off events. For 1695/1695 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 68269 event pairs, 30 based on Foata normal form. 3/7466 useless extension candidates. Maximal degree in co-relation 316023. Up to 10834 conditions per place. [2024-02-19 14:38:16,022 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 1335 selfloop transitions, 180 changer transitions 927/2443 dead transitions. [2024-02-19 14:38:16,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 2443 transitions, 157820 flow [2024-02-19 14:38:16,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-19 14:38:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-19 14:38:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 237 transitions. [2024-02-19 14:38:16,023 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-02-19 14:38:16,023 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 377 predicate places. [2024-02-19 14:38:16,023 INFO L507 AbstractCegarLoop]: Abstraction has has 410 places, 2443 transitions, 157820 flow [2024-02-19 14:38:16,023 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.56) internal successors, (164), 25 states have internal predecessors, (164), 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) [2024-02-19 14:38:16,023 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:38:16,023 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:38:16,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-02-19 14:38:16,235 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-02-19 14:38:16,236 INFO L432 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:38:16,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:38:16,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1955991047, now seen corresponding path program 19 times [2024-02-19 14:38:16,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:38:16,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062345829] [2024-02-19 14:38:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:38:16,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:38:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:38:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:38:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:38:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062345829] [2024-02-19 14:38:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062345829] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:38:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30096276] [2024-02-19 14:38:16,910 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:38:16,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:38:16,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:38:16,911 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:38:16,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-02-19 14:38:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:38:17,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:38:17,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:38:17,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:38:17,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-02-19 14:38:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:38:17,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:38:18,024 INFO L349 Elim1Store]: treesize reduction 4, result has 98.8 percent of original size [2024-02-19 14:38:18,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 347 [2024-02-19 14:39:05,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-02-19 14:39:05,488 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-02-19 14:39:05,489 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-02-19 14:39:05,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-02-19 14:39:05,701 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:39:05,701 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:287) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:519) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:503) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:443) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:378) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:527) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 86 more [2024-02-19 14:39:05,707 INFO L158 Benchmark]: Toolchain (without parser) took 345122.69ms. Allocated memory was 62.9MB in the beginning and 4.2GB in the end (delta: 4.2GB). Free memory was 29.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2024-02-19 14:39:05,708 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory is still 25.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-19 14:39:05,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.45ms. Allocated memory is still 62.9MB. Free memory was 29.4MB in the beginning and 36.9MB in the end (delta: -7.5MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-02-19 14:39:05,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.50ms. Allocated memory is still 62.9MB. Free memory was 36.8MB in the beginning and 34.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-19 14:39:05,708 INFO L158 Benchmark]: Boogie Preprocessor took 65.01ms. Allocated memory is still 62.9MB. Free memory was 34.0MB in the beginning and 30.8MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-19 14:39:05,708 INFO L158 Benchmark]: RCFGBuilder took 882.03ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 30.6MB in the beginning and 33.2MB in the end (delta: -2.6MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2024-02-19 14:39:05,709 INFO L158 Benchmark]: TraceAbstraction took 343949.77ms. Allocated memory was 79.7MB in the beginning and 4.2GB in the end (delta: 4.2GB). Free memory was 32.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2024-02-19 14:39:05,710 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory is still 25.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.45ms. Allocated memory is still 62.9MB. Free memory was 29.4MB in the beginning and 36.9MB in the end (delta: -7.5MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.50ms. Allocated memory is still 62.9MB. Free memory was 36.8MB in the beginning and 34.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.01ms. Allocated memory is still 62.9MB. Free memory was 34.0MB in the beginning and 30.8MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 882.03ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 30.6MB in the beginning and 33.2MB in the end (delta: -2.6MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * TraceAbstraction took 343949.77ms. Allocated memory was 79.7MB in the beginning and 4.2GB in the end (delta: 4.2GB). Free memory was 32.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:39:07,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:39:08,005 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-02-19 14:39:08,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:39:08,010 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:39:08,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:39:08,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:39:08,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:39:08,037 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:39:08,040 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:39:08,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:39:08,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:39:08,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:39:08,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:39:08,041 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:39:08,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:39:08,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:39:08,042 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:39:08,042 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:39:08,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:39:08,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:39:08,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:39:08,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:39:08,043 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-02-19 14:39:08,044 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-02-19 14:39:08,044 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:39:08,044 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-02-19 14:39:08,044 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:39:08,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:39:08,044 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:39:08,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:39:08,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:39:08,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:39:08,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:39:08,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:39:08,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:39:08,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:39:08,047 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:39:08,047 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-02-19 14:39:08,047 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-02-19 14:39:08,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:39:08,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:39:08,047 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:39:08,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:39:08,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:39:08,048 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-02-19 14:39:08,048 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:39:08,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:39:08,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:39:08,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:39:08,352 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:39:08,353 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:39:08,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2024-02-19 14:39:09,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:39:09,696 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:39:09,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2024-02-19 14:39:09,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401611cce/22bade2b22d84d0987c779b1ef2bb079/FLAG2e65aaaaa [2024-02-19 14:39:09,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401611cce/22bade2b22d84d0987c779b1ef2bb079 [2024-02-19 14:39:09,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:39:09,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:39:09,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:39:09,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:39:09,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:39:09,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:39:09" (1/1) ... [2024-02-19 14:39:09,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65395fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:09, skipping insertion in model container [2024-02-19 14:39:09,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:39:09" (1/1) ... [2024-02-19 14:39:09,781 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:39:09,943 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2024-02-19 14:39:09,960 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:39:09,975 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-02-19 14:39:09,982 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:39:10,006 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2024-02-19 14:39:10,012 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:39:10,016 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:39:10,046 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2024-02-19 14:39:10,048 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:39:10,062 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:39:10,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10 WrapperNode [2024-02-19 14:39:10,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:39:10,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:39:10,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:39:10,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:39:10,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,123 INFO L138 Inliner]: procedures = 28, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 273 [2024-02-19 14:39:10,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:39:10,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:39:10,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:39:10,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:39:10,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,151 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,172 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 2, 2, 9, 2]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2024-02-19 14:39:10,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:39:10,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:39:10,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:39:10,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:39:10,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (1/1) ... [2024-02-19 14:39:10,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:39:10,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:39:10,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 14:39:10,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 14:39:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:39:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-02-19 14:39:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-02-19 14:39:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-02-19 14:39:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-02-19 14:39:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-02-19 14:39:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:39:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-02-19 14:39:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-02-19 14:39:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-02-19 14:39:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-02-19 14:39:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-02-19 14:39:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:39:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:39:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:39:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:39:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:39:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:39:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:39:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:39:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:39:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:39:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-02-19 14:39:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-02-19 14:39:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-02-19 14:39:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-02-19 14:39:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-02-19 14:39:10,297 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:39:10,389 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:39:10,390 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:39:10,821 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:39:10,821 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:39:11,222 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:39:11,223 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-19 14:39:11,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:39:11 BoogieIcfgContainer [2024-02-19 14:39:11,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:39:11,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:39:11,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:39:11,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:39:11,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:39:09" (1/3) ... [2024-02-19 14:39:11,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e26babd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:39:11, skipping insertion in model container [2024-02-19 14:39:11,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:10" (2/3) ... [2024-02-19 14:39:11,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e26babd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:39:11, skipping insertion in model container [2024-02-19 14:39:11,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:39:11" (3/3) ... [2024-02-19 14:39:11,232 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2024-02-19 14:39:11,247 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:39:11,248 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:39:11,248 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:39:11,298 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 14:39:11,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 33 transitions, 87 flow [2024-02-19 14:39:11,381 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-02-19 14:39:11,381 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:39:11,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 6/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-02-19 14:39:11,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 33 transitions, 87 flow [2024-02-19 14:39:11,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 29 transitions, 76 flow [2024-02-19 14:39:11,392 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:39:11,396 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@22f24983, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:39:11,396 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 14:39:11,404 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:39:11,404 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-02-19 14:39:11,404 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:39:11,404 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:11,405 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:39:11,405 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:11,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1016239826, now seen corresponding path program 1 times [2024-02-19 14:39:11,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:11,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259101150] [2024-02-19 14:39:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:39:11,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:11,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:11,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:11,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-02-19 14:39:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:39:11,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:39:11,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:39:11,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:39:11,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:11,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259101150] [2024-02-19 14:39:11,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259101150] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:11,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:11,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:39:11,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390929671] [2024-02-19 14:39:11,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:11,626 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:39:11,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:11,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:39:11,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:39:11,653 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:11,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-02-19 14:39:11,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:11,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:11,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:11,824 INFO L124 PetriNetUnfolderBase]: 223/335 cut-off events. [2024-02-19 14:39:11,824 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-02-19 14:39:11,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 335 events. 223/335 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 775 event pairs, 138 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 534. Up to 332 conditions per place. [2024-02-19 14:39:11,828 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 25 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2024-02-19 14:39:11,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 144 flow [2024-02-19 14:39:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:39:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:39:11,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-02-19 14:39:11,837 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-02-19 14:39:11,839 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-02-19 14:39:11,839 INFO L507 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 144 flow [2024-02-19 14:39:11,839 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-02-19 14:39:11,839 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:11,840 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-19 14:39:11,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-02-19 14:39:12,042 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:12,043 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:12,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:12,043 INFO L85 PathProgramCache]: Analyzing trace with hash 269500902, now seen corresponding path program 1 times [2024-02-19 14:39:12,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765822854] [2024-02-19 14:39:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:39:12,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:12,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:12,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-02-19 14:39:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:39:12,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 14:39:12,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:39:12,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:39:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:39:12,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:12,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765822854] [2024-02-19 14:39:12,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765822854] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:39:12,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:39:12,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-02-19 14:39:12,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027117768] [2024-02-19 14:39:12,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:39:12,210 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:39:12,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:12,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:39:12,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:39:12,211 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:12,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2024-02-19 14:39:12,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:12,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:12,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:12,495 INFO L124 PetriNetUnfolderBase]: 223/344 cut-off events. [2024-02-19 14:39:12,496 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-02-19 14:39:12,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 344 events. 223/344 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 775 event pairs, 138 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 789. Up to 341 conditions per place. [2024-02-19 14:39:12,500 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 25 selfloop transitions, 15 changer transitions 0/41 dead transitions. [2024-02-19 14:39:12,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 41 transitions, 260 flow [2024-02-19 14:39:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:39:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:39:12,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-02-19 14:39:12,531 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-02-19 14:39:12,532 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-02-19 14:39:12,546 INFO L507 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 260 flow [2024-02-19 14:39:12,546 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2024-02-19 14:39:12,546 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:12,546 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:39:12,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-02-19 14:39:12,750 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:12,750 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:12,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1796804590, now seen corresponding path program 2 times [2024-02-19 14:39:12,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:12,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328494281] [2024-02-19 14:39:12,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:39:12,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:12,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:12,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:12,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-02-19 14:39:12,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-19 14:39:12,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:12,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-19 14:39:12,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-02-19 14:39:12,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:39:12,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:12,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328494281] [2024-02-19 14:39:12,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328494281] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:12,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:12,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:39:12,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701044777] [2024-02-19 14:39:12,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:12,912 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:39:12,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:39:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:39:12,913 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:12,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-02-19 14:39:12,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:12,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:12,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:13,185 INFO L124 PetriNetUnfolderBase]: 369/569 cut-off events. [2024-02-19 14:39:13,185 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-02-19 14:39:13,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 569 events. 369/569 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1711 event pairs, 138 based on Foata normal form. 14/430 useless extension candidates. Maximal degree in co-relation 1708. Up to 565 conditions per place. [2024-02-19 14:39:13,188 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 64 selfloop transitions, 3 changer transitions 2/70 dead transitions. [2024-02-19 14:39:13,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 70 transitions, 593 flow [2024-02-19 14:39:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:39:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:39:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-02-19 14:39:13,190 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-02-19 14:39:13,190 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2024-02-19 14:39:13,190 INFO L507 AbstractCegarLoop]: Abstraction has has 43 places, 70 transitions, 593 flow [2024-02-19 14:39:13,191 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-02-19 14:39:13,191 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:13,191 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:39:13,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-02-19 14:39:13,394 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:13,394 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:13,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:13,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1899473216, now seen corresponding path program 3 times [2024-02-19 14:39:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:13,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648042395] [2024-02-19 14:39:13,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:39:13,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:13,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:13,397 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:13,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-02-19 14:39:13,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-19 14:39:13,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:13,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:39:13,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-02-19 14:39:13,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:39:13,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:13,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648042395] [2024-02-19 14:39:13,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648042395] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:13,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:13,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:39:13,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986315540] [2024-02-19 14:39:13,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:13,563 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:39:13,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:13,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:39:13,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:39:13,564 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:13,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 70 transitions, 593 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-02-19 14:39:13,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:13,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:13,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:14,122 INFO L124 PetriNetUnfolderBase]: 894/1332 cut-off events. [2024-02-19 14:39:14,122 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-02-19 14:39:14,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6784 conditions, 1332 events. 894/1332 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5106 event pairs, 138 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 4810. Up to 1326 conditions per place. [2024-02-19 14:39:14,129 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 162 selfloop transitions, 40 changer transitions 32/235 dead transitions. [2024-02-19 14:39:14,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 235 transitions, 2471 flow [2024-02-19 14:39:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:39:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:39:14,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-02-19 14:39:14,133 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5037878787878788 [2024-02-19 14:39:14,135 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2024-02-19 14:39:14,135 INFO L507 AbstractCegarLoop]: Abstraction has has 50 places, 235 transitions, 2471 flow [2024-02-19 14:39:14,135 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-02-19 14:39:14,135 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:14,136 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:39:14,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-02-19 14:39:14,352 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:14,352 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:14,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash 470759848, now seen corresponding path program 4 times [2024-02-19 14:39:14,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:14,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767867087] [2024-02-19 14:39:14,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:39:14,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:14,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:14,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:14,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-02-19 14:39:14,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:39:14,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:14,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 14:39:14,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-02-19 14:39:14,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:39:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-02-19 14:39:14,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:14,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767867087] [2024-02-19 14:39:14,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767867087] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:39:14,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:39:14,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-02-19 14:39:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125847902] [2024-02-19 14:39:14,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:39:14,633 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-19 14:39:14,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-19 14:39:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-02-19 14:39:14,635 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:14,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 235 transitions, 2471 flow. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 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) [2024-02-19 14:39:14,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:14,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:14,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:15,128 INFO L124 PetriNetUnfolderBase]: 894/1335 cut-off events. [2024-02-19 14:39:15,128 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-02-19 14:39:15,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8131 conditions, 1335 events. 894/1335 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5067 event pairs, 138 based on Foata normal form. 0/932 useless extension candidates. Maximal degree in co-relation 5760. Up to 1329 conditions per place. [2024-02-19 14:39:15,162 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 187 selfloop transitions, 18 changer transitions 32/238 dead transitions. [2024-02-19 14:39:15,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 238 transitions, 2975 flow [2024-02-19 14:39:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:39:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:39:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-02-19 14:39:15,164 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3203463203463203 [2024-02-19 14:39:15,164 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2024-02-19 14:39:15,165 INFO L507 AbstractCegarLoop]: Abstraction has has 56 places, 238 transitions, 2975 flow [2024-02-19 14:39:15,165 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 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) [2024-02-19 14:39:15,165 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:15,165 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:39:15,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-02-19 14:39:15,371 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:15,371 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:15,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:15,372 INFO L85 PathProgramCache]: Analyzing trace with hash 609899748, now seen corresponding path program 5 times [2024-02-19 14:39:15,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:15,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852628037] [2024-02-19 14:39:15,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:39:15,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:15,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:15,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:15,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-02-19 14:39:15,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-19 14:39:15,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:15,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:39:15,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:39:15,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:39:15,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:15,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852628037] [2024-02-19 14:39:15,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852628037] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:15,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:15,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:39:15,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086050862] [2024-02-19 14:39:15,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:15,702 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:39:15,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:39:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:39:15,703 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:15,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 238 transitions, 2975 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-02-19 14:39:15,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:15,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:15,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:16,076 INFO L124 PetriNetUnfolderBase]: 985/1508 cut-off events. [2024-02-19 14:39:16,076 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-02-19 14:39:16,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10692 conditions, 1508 events. 985/1508 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6203 event pairs, 138 based on Foata normal form. 4/1061 useless extension candidates. Maximal degree in co-relation 7571. Up to 1502 conditions per place. [2024-02-19 14:39:16,085 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 181 selfloop transitions, 15 changer transitions 103/300 dead transitions. [2024-02-19 14:39:16,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 300 transitions, 4359 flow [2024-02-19 14:39:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:39:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:39:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-02-19 14:39:16,086 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-02-19 14:39:16,086 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2024-02-19 14:39:16,087 INFO L507 AbstractCegarLoop]: Abstraction has has 58 places, 300 transitions, 4359 flow [2024-02-19 14:39:16,087 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-02-19 14:39:16,087 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:16,087 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:39:16,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-02-19 14:39:16,293 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:16,293 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:16,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:16,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1630809302, now seen corresponding path program 1 times [2024-02-19 14:39:16,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:16,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449887024] [2024-02-19 14:39:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:39:16,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:16,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:16,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:16,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-02-19 14:39:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:39:16,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:39:16,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:16,556 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:39:16,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:39:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-19 14:39:16,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:16,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449887024] [2024-02-19 14:39:16,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449887024] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:39:16,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:39:16,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-02-19 14:39:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022983702] [2024-02-19 14:39:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:16,580 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:39:16,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:16,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:39:16,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:39:16,581 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:16,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 300 transitions, 4359 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:39:16,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:16,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:16,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:16,985 INFO L124 PetriNetUnfolderBase]: 1051/1602 cut-off events. [2024-02-19 14:39:16,985 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2024-02-19 14:39:16,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12953 conditions, 1602 events. 1051/1602 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6561 event pairs, 48 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 9204. Up to 1596 conditions per place. [2024-02-19 14:39:17,022 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 234 selfloop transitions, 22 changer transitions 122/379 dead transitions. [2024-02-19 14:39:17,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 379 transitions, 6257 flow [2024-02-19 14:39:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:39:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:39:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-02-19 14:39:17,024 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.503030303030303 [2024-02-19 14:39:17,024 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2024-02-19 14:39:17,024 INFO L507 AbstractCegarLoop]: Abstraction has has 62 places, 379 transitions, 6257 flow [2024-02-19 14:39:17,024 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:39:17,025 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:17,025 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:39:17,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-02-19 14:39:17,231 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:17,231 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:17,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash -747419786, now seen corresponding path program 2 times [2024-02-19 14:39:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:17,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179345950] [2024-02-19 14:39:17,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:39:17,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:17,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:17,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:17,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-02-19 14:39:17,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-19 14:39:17,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:17,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-19 14:39:17,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:39:17,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:39:17,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179345950] [2024-02-19 14:39:17,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179345950] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:17,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:17,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:39:17,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527439501] [2024-02-19 14:39:17,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:17,411 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:39:17,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:39:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:39:17,412 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:17,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 379 transitions, 6257 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:39:17,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:17,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:17,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:17,961 INFO L124 PetriNetUnfolderBase]: 1423/2163 cut-off events. [2024-02-19 14:39:17,962 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2024-02-19 14:39:17,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19658 conditions, 2163 events. 1423/2163 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9531 event pairs, 6 based on Foata normal form. 2/1506 useless extension candidates. Maximal degree in co-relation 17779. Up to 2157 conditions per place. [2024-02-19 14:39:17,977 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 315 selfloop transitions, 31 changer transitions 282/629 dead transitions. [2024-02-19 14:39:17,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 629 transitions, 11627 flow [2024-02-19 14:39:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:39:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:39:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-02-19 14:39:17,985 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2024-02-19 14:39:17,986 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2024-02-19 14:39:17,986 INFO L507 AbstractCegarLoop]: Abstraction has has 67 places, 629 transitions, 11627 flow [2024-02-19 14:39:17,986 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:39:17,986 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:17,986 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:39:17,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-02-19 14:39:18,189 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:18,190 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:18,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 845691758, now seen corresponding path program 3 times [2024-02-19 14:39:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:18,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864241487] [2024-02-19 14:39:18,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:39:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:18,192 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:18,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-02-19 14:39:18,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-19 14:39:18,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:18,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-19 14:39:18,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:39:18,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:39:18,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:18,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864241487] [2024-02-19 14:39:18,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864241487] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:18,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:18,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:39:18,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013136778] [2024-02-19 14:39:18,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:18,343 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:39:18,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:18,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:39:18,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:39:18,343 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:18,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 629 transitions, 11627 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:39:18,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:18,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:18,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:18,949 INFO L124 PetriNetUnfolderBase]: 1423/2159 cut-off events. [2024-02-19 14:39:18,949 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2024-02-19 14:39:18,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21796 conditions, 2159 events. 1423/2159 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9421 event pairs, 0 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 19738. Up to 2155 conditions per place. [2024-02-19 14:39:18,965 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 280 selfloop transitions, 32 changer transitions 394/707 dead transitions. [2024-02-19 14:39:18,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 707 transitions, 14479 flow [2024-02-19 14:39:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:39:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:39:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-02-19 14:39:18,967 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-02-19 14:39:18,968 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 40 predicate places. [2024-02-19 14:39:18,968 INFO L507 AbstractCegarLoop]: Abstraction has has 73 places, 707 transitions, 14479 flow [2024-02-19 14:39:18,968 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:39:18,968 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:18,968 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:39:18,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-02-19 14:39:19,185 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:19,187 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:19,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:19,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1437912663, now seen corresponding path program 1 times [2024-02-19 14:39:19,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:19,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559540328] [2024-02-19 14:39:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:39:19,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:19,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:19,190 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:19,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-02-19 14:39:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:39:19,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:39:19,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:39:19,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:39:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:39:19,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:19,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559540328] [2024-02-19 14:39:19,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559540328] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:39:19,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:39:19,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-02-19 14:39:19,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755066928] [2024-02-19 14:39:19,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:19,525 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:39:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:19,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:39:19,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-19 14:39:19,526 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:19,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 707 transitions, 14479 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:39:19,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:19,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:19,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:20,288 INFO L124 PetriNetUnfolderBase]: 1783/2711 cut-off events. [2024-02-19 14:39:20,289 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2024-02-19 14:39:20,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30058 conditions, 2711 events. 1783/2711 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12572 event pairs, 0 based on Foata normal form. 0/1872 useless extension candidates. Maximal degree in co-relation 27177. Up to 2706 conditions per place. [2024-02-19 14:39:20,302 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 353 selfloop transitions, 45 changer transitions 525/924 dead transitions. [2024-02-19 14:39:20,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 924 transitions, 20764 flow [2024-02-19 14:39:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:39:20,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:39:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-02-19 14:39:20,304 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-02-19 14:39:20,304 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2024-02-19 14:39:20,305 INFO L507 AbstractCegarLoop]: Abstraction has has 77 places, 924 transitions, 20764 flow [2024-02-19 14:39:20,305 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:39:20,305 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:20,305 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:39:20,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-02-19 14:39:20,510 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:20,511 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:20,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash 627476235, now seen corresponding path program 2 times [2024-02-19 14:39:20,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:20,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545522355] [2024-02-19 14:39:20,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:39:20,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:20,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:20,513 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:20,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-02-19 14:39:20,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:39:20,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:20,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:39:20,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:39:20,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:39:20,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545522355] [2024-02-19 14:39:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545522355] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:20,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:20,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:39:20,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302946232] [2024-02-19 14:39:20,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:20,799 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:39:20,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:20,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:39:20,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:39:20,800 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:20,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 924 transitions, 20764 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:39:20,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:20,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:20,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:21,531 INFO L124 PetriNetUnfolderBase]: 1691/2562 cut-off events. [2024-02-19 14:39:21,531 INFO L125 PetriNetUnfolderBase]: For 404/404 co-relation queries the response was YES. [2024-02-19 14:39:21,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30975 conditions, 2562 events. 1691/2562 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11647 event pairs, 0 based on Foata normal form. 0/1787 useless extension candidates. Maximal degree in co-relation 28258. Up to 2558 conditions per place. [2024-02-19 14:39:21,546 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 313 selfloop transitions, 41 changer transitions 522/877 dead transitions. [2024-02-19 14:39:21,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 877 transitions, 21455 flow [2024-02-19 14:39:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:39:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:39:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-02-19 14:39:21,547 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-02-19 14:39:21,548 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 48 predicate places. [2024-02-19 14:39:21,548 INFO L507 AbstractCegarLoop]: Abstraction has has 81 places, 877 transitions, 21455 flow [2024-02-19 14:39:21,548 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:39:21,548 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:21,548 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:39:21,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-02-19 14:39:21,754 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:21,754 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:21,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:21,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1165331813, now seen corresponding path program 3 times [2024-02-19 14:39:21,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:21,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650400407] [2024-02-19 14:39:21,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:39:21,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:21,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:21,756 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:21,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-02-19 14:39:21,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:39:21,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:21,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:39:21,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:39:22,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:39:22,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:22,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650400407] [2024-02-19 14:39:22,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650400407] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:22,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:22,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:39:22,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103434779] [2024-02-19 14:39:22,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:22,006 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:39:22,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:39:22,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:39:22,007 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:22,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 877 transitions, 21455 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:39:22,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:22,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:22,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:22,860 INFO L124 PetriNetUnfolderBase]: 1665/2536 cut-off events. [2024-02-19 14:39:22,860 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-02-19 14:39:22,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33198 conditions, 2536 events. 1665/2536 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11627 event pairs, 0 based on Foata normal form. 0/1787 useless extension candidates. Maximal degree in co-relation 30339. Up to 2532 conditions per place. [2024-02-19 14:39:22,908 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 300 selfloop transitions, 33 changer transitions 537/871 dead transitions. [2024-02-19 14:39:22,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 871 transitions, 23051 flow [2024-02-19 14:39:22,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:39:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:39:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-02-19 14:39:22,910 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.503030303030303 [2024-02-19 14:39:22,911 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2024-02-19 14:39:22,911 INFO L507 AbstractCegarLoop]: Abstraction has has 85 places, 871 transitions, 23051 flow [2024-02-19 14:39:22,912 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:39:22,912 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:22,912 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:39:22,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-02-19 14:39:23,117 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:23,117 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:23,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:23,118 INFO L85 PathProgramCache]: Analyzing trace with hash -900057085, now seen corresponding path program 4 times [2024-02-19 14:39:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:23,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959696526] [2024-02-19 14:39:23,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:39:23,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:23,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:23,120 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:23,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-02-19 14:39:23,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:39:23,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:23,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-19 14:39:23,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:39:23,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:39:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-19 14:39:23,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:39:23,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959696526] [2024-02-19 14:39:23,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959696526] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:39:23,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:39:23,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-02-19 14:39:23,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208525074] [2024-02-19 14:39:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:23,467 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:39:23,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:39:23,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:39:23,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-02-19 14:39:23,468 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-19 14:39:23,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 871 transitions, 23051 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:39:23,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:23,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-19 14:39:23,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:24,238 INFO L124 PetriNetUnfolderBase]: 1653/2507 cut-off events. [2024-02-19 14:39:24,239 INFO L125 PetriNetUnfolderBase]: For 385/385 co-relation queries the response was YES. [2024-02-19 14:39:24,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35331 conditions, 2507 events. 1653/2507 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11471 event pairs, 0 based on Foata normal form. 0/1804 useless extension candidates. Maximal degree in co-relation 32660. Up to 2504 conditions per place. [2024-02-19 14:39:24,254 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 286 selfloop transitions, 43 changer transitions 531/861 dead transitions. [2024-02-19 14:39:24,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 861 transitions, 24493 flow [2024-02-19 14:39:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:39:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:39:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-02-19 14:39:24,255 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2024-02-19 14:39:24,256 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 56 predicate places. [2024-02-19 14:39:24,256 INFO L507 AbstractCegarLoop]: Abstraction has has 89 places, 861 transitions, 24493 flow [2024-02-19 14:39:24,256 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:39:24,257 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:24,257 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-02-19 14:39:24,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-02-19 14:39:24,462 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:24,463 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:39:24,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:24,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1686648149, now seen corresponding path program 1 times [2024-02-19 14:39:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:39:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054111880] [2024-02-19 14:39:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:39:24,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:39:24,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:39:24,465 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:39:24,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process Killed by 15