./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-max-array.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/popl20-more-max-array.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 a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 --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 15:02:16,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 15:02:16,599 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 15:02:16,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 15:02:16,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 15:02:16,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 15:02:16,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 15:02:16,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 15:02:16,631 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 15:02:16,634 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 15:02:16,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 15:02:16,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 15:02:16,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 15:02:16,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 15:02:16,637 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 15:02:16,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 15:02:16,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 15:02:16,637 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 15:02:16,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 15:02:16,638 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 15:02:16,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 15:02:16,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 15:02:16,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 15:02:16,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 15:02:16,639 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 15:02:16,640 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 15:02:16,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 15:02:16,640 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 15:02:16,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 15:02:16,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 15:02:16,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 15:02:16,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 15:02:16,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:02:16,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 15:02:16,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 15:02:16,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 15:02:16,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 15:02:16,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 15:02:16,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 15:02:16,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 15:02:16,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 15:02:16,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 15:02:16,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 15:02:16,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 15:02:16,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 15:02:16,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 15:02:16,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 15:02:16,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 15:02:16,934 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 15:02:16,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2024-02-19 15:02:18,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 15:02:18,187 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 15:02:18,188 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2024-02-19 15:02:18,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b94ecfc/622bc684cd444352bdcff35a45098e82/FLAG41e1c7c13 [2024-02-19 15:02:18,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b94ecfc/622bc684cd444352bdcff35a45098e82 [2024-02-19 15:02:18,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 15:02:18,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 15:02:18,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 15:02:18,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 15:02:18,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 15:02:18,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ab5717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18, skipping insertion in model container [2024-02-19 15:02:18,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,250 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 15:02:18,427 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/popl20-more-max-array.wvr.c[2553,2566] [2024-02-19 15:02:18,438 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:02:18,447 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 15:02:18,480 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/popl20-more-max-array.wvr.c[2553,2566] [2024-02-19 15:02:18,483 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:02:18,496 INFO L206 MainTranslator]: Completed translation [2024-02-19 15:02:18,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18 WrapperNode [2024-02-19 15:02:18,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 15:02:18,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 15:02:18,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 15:02:18,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 15:02:18,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,542 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2024-02-19 15:02:18,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 15:02:18,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 15:02:18,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 15:02:18,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 15:02:18,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,584 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 7, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-19 15:02:18,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 15:02:18,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 15:02:18,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 15:02:18,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 15:02:18,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (1/1) ... [2024-02-19 15:02:18,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:02:18,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:18,642 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 15:02:18,645 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 15:02:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 15:02:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 15:02:18,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 15:02:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 15:02:18,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 15:02:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 15:02:18,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 15:02:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 15:02:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 15:02:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 15:02:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 15:02:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 15:02:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 15:02:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 15:02:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 15:02:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 15:02:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 15:02:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 15:02:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 15:02:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 15:02:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 15:02:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 15:02:18,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 15:02:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 15:02:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 15:02:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 15:02:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 15:02:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 15:02:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 15:02:18,708 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 15:02:18,800 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 15:02:18,802 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 15:02:19,052 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 15:02:19,054 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 15:02:19,230 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 15:02:19,230 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-19 15:02:19,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:02:19 BoogieIcfgContainer [2024-02-19 15:02:19,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 15:02:19,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 15:02:19,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 15:02:19,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 15:02:19,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 03:02:18" (1/3) ... [2024-02-19 15:02:19,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb30afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:02:19, skipping insertion in model container [2024-02-19 15:02:19,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:18" (2/3) ... [2024-02-19 15:02:19,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb30afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:02:19, skipping insertion in model container [2024-02-19 15:02:19,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:02:19" (3/3) ... [2024-02-19 15:02:19,236 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2024-02-19 15:02:19,250 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 15:02:19,250 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 15:02:19,250 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 15:02:19,286 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 15:02:19,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 91 flow [2024-02-19 15:02:19,368 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-02-19 15:02:19,368 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 15:02:19,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 4/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-02-19 15:02:19,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 91 flow [2024-02-19 15:02:19,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 80 flow [2024-02-19 15:02:19,391 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 15:02:19,398 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;@7316af74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 15:02:19,398 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 15:02:19,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 15:02:19,413 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-02-19 15:02:19,413 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 15:02:19,413 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:19,414 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] [2024-02-19 15:02:19,414 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 15:02:19,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash 440371353, now seen corresponding path program 1 times [2024-02-19 15:02:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:19,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104008568] [2024-02-19 15:02:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:19,792 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 15:02:19,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:19,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104008568] [2024-02-19 15:02:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104008568] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:02:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:02:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:02:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700054531] [2024-02-19 15:02:19,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:02:19,801 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:02:19,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:19,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:02:19,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:02:19,842 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-02-19 15:02:19,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 15:02:19,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:19,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-02-19 15:02:19,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:20,056 INFO L124 PetriNetUnfolderBase]: 655/1008 cut-off events. [2024-02-19 15:02:20,056 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-02-19 15:02:20,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1008 events. 655/1008 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4385 event pairs, 93 based on Foata normal form. 1/993 useless extension candidates. Maximal degree in co-relation 1605. Up to 822 conditions per place. [2024-02-19 15:02:20,067 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 35 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2024-02-19 15:02:20,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 207 flow [2024-02-19 15:02:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:02:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:02:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-02-19 15:02:20,076 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-02-19 15:02:20,079 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-02-19 15:02:20,079 INFO L507 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 207 flow [2024-02-19 15:02:20,079 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 15:02:20,080 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:20,080 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] [2024-02-19 15:02:20,080 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 15:02:20,080 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 15:02:20,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1717670322, now seen corresponding path program 1 times [2024-02-19 15:02:20,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:20,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557454620] [2024-02-19 15:02:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:20,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:20,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:20,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557454620] [2024-02-19 15:02:20,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557454620] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:02:20,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:02:20,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:02:20,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745282044] [2024-02-19 15:02:20,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:02:20,277 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:02:20,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:02:20,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:02:20,283 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-02-19 15:02:20,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 47 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 15:02:20,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:20,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-02-19 15:02:20,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:20,397 INFO L124 PetriNetUnfolderBase]: 655/1009 cut-off events. [2024-02-19 15:02:20,397 INFO L125 PetriNetUnfolderBase]: For 192/224 co-relation queries the response was YES. [2024-02-19 15:02:20,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 1009 events. 655/1009 cut-off events. For 192/224 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4429 event pairs, 93 based on Foata normal form. 0/995 useless extension candidates. Maximal degree in co-relation 2338. Up to 903 conditions per place. [2024-02-19 15:02:20,403 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 38 selfloop transitions, 2 changer transitions 1/48 dead transitions. [2024-02-19 15:02:20,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 293 flow [2024-02-19 15:02:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:02:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:02:20,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-02-19 15:02:20,406 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-19 15:02:20,407 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-02-19 15:02:20,407 INFO L507 AbstractCegarLoop]: Abstraction has has 41 places, 48 transitions, 293 flow [2024-02-19 15:02:20,407 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 15:02:20,408 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:20,408 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] [2024-02-19 15:02:20,408 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 15:02:20,409 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 15:02:20,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:20,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1069321185, now seen corresponding path program 1 times [2024-02-19 15:02:20,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:20,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540939059] [2024-02-19 15:02:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:20,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:02:20,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:20,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540939059] [2024-02-19 15:02:20,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540939059] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:02:20,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:02:20,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 15:02:20,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705688400] [2024-02-19 15:02:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:02:20,510 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 15:02:20,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 15:02:20,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 15:02:20,525 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:02:20,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 48 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 15:02:20,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:20,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:02:20,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:20,666 INFO L124 PetriNetUnfolderBase]: 868/1257 cut-off events. [2024-02-19 15:02:20,667 INFO L125 PetriNetUnfolderBase]: For 1309/1357 co-relation queries the response was YES. [2024-02-19 15:02:20,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 1257 events. 868/1257 cut-off events. For 1309/1357 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5497 event pairs, 69 based on Foata normal form. 54/1301 useless extension candidates. Maximal degree in co-relation 3777. Up to 1061 conditions per place. [2024-02-19 15:02:20,696 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 58 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-02-19 15:02:20,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 536 flow [2024-02-19 15:02:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 15:02:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 15:02:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-02-19 15:02:20,697 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-02-19 15:02:20,698 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-02-19 15:02:20,698 INFO L507 AbstractCegarLoop]: Abstraction has has 44 places, 67 transitions, 536 flow [2024-02-19 15:02:20,698 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 15:02:20,698 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:20,699 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] [2024-02-19 15:02:20,699 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 15:02:20,699 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 15:02:20,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:20,699 INFO L85 PathProgramCache]: Analyzing trace with hash 721954181, now seen corresponding path program 1 times [2024-02-19 15:02:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740848960] [2024-02-19 15:02:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:20,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740848960] [2024-02-19 15:02:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740848960] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519199719] [2024-02-19 15:02:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:20,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:20,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:20,770 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 15:02:20,798 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 15:02:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:20,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 15:02:20,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:20,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:20,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519199719] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:20,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:02:20,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-02-19 15:02:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089812713] [2024-02-19 15:02:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:02:20,924 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 15:02:20,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 15:02:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-19 15:02:20,931 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:02:20,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 67 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 15:02:20,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:20,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:02:20,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:21,028 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [24#L70-4true, 4#L47true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,029 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2024-02-19 15:02:21,029 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:21,029 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:21,029 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:21,030 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (< v_~max2~0_48 .cse0) (= v_~max2~0_47 .cse0)) (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~max2~0_48 v_~max2~0_47) (<= .cse0 v_~max2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, ~max2~0=v_~max2~0_48, #memory_int#1=|v_#memory_int#1_45|} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, ~max2~0=v_~max2~0_47, #memory_int#1=|v_#memory_int#1_45|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~max2~0][59], [5#L94-4true, 4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,030 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,030 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,030 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,030 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,032 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (< v_~max2~0_48 .cse0) (= v_~max2~0_47 .cse0)) (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~max2~0_48 v_~max2~0_47) (<= .cse0 v_~max2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, ~max2~0=v_~max2~0_48, #memory_int#1=|v_#memory_int#1_45|} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, ~max2~0=v_~max2~0_47, #memory_int#1=|v_#memory_int#1_45|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~max2~0][59], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,032 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-19 15:02:21,032 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:21,033 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:21,033 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:21,033 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,033 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,033 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,033 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,033 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,035 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 31#L46-4true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,035 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2024-02-19 15:02:21,035 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:21,035 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:21,036 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:21,042 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [5#L94-4true, 4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,042 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is not cut-off event [2024-02-19 15:02:21,042 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-19 15:02:21,043 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-19 15:02:21,043 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-19 15:02:21,043 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (< v_~max2~0_48 .cse0) (= v_~max2~0_47 .cse0)) (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~max2~0_48 v_~max2~0_47) (<= .cse0 v_~max2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, ~max2~0=v_~max2~0_48, #memory_int#1=|v_#memory_int#1_45|} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, ~max2~0=v_~max2~0_47, #memory_int#1=|v_#memory_int#1_45|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~max2~0][59], [24#L70-4true, 4#L47true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,043 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,043 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,044 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,044 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,044 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (< v_~max2~0_48 .cse0) (= v_~max2~0_47 .cse0)) (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~max2~0_48 v_~max2~0_47) (<= .cse0 v_~max2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, ~max2~0=v_~max2~0_48, #memory_int#1=|v_#memory_int#1_45|} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, ~max2~0=v_~max2~0_47, #memory_int#1=|v_#memory_int#1_45|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~max2~0][59], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,044 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-19 15:02:21,044 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:21,044 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:21,044 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:21,045 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:21,045 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,045 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,045 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,045 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,045 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,045 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,048 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (< v_~max2~0_48 .cse0) (= v_~max2~0_47 .cse0)) (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~max2~0_48 v_~max2~0_47) (<= .cse0 v_~max2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, ~max2~0=v_~max2~0_48, #memory_int#1=|v_#memory_int#1_45|} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, ~max2~0=v_~max2~0_47, #memory_int#1=|v_#memory_int#1_45|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~max2~0][59], [18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 47#true, 31#L46-4true, 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:21,048 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,048 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,049 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,049 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:21,103 INFO L124 PetriNetUnfolderBase]: 1130/1607 cut-off events. [2024-02-19 15:02:21,104 INFO L125 PetriNetUnfolderBase]: For 4245/4348 co-relation queries the response was YES. [2024-02-19 15:02:21,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 1607 events. 1130/1607 cut-off events. For 4245/4348 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7003 event pairs, 102 based on Foata normal form. 125/1704 useless extension candidates. Maximal degree in co-relation 6829. Up to 1276 conditions per place. [2024-02-19 15:02:21,114 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 72 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2024-02-19 15:02:21,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 84 transitions, 822 flow [2024-02-19 15:02:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 15:02:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 15:02:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-02-19 15:02:21,116 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-02-19 15:02:21,117 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-02-19 15:02:21,117 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 84 transitions, 822 flow [2024-02-19 15:02:21,117 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 15:02:21,117 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:21,117 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, 1] [2024-02-19 15:02:21,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 15:02:21,329 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:21,330 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 15:02:21,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:21,331 INFO L85 PathProgramCache]: Analyzing trace with hash 676449730, now seen corresponding path program 1 times [2024-02-19 15:02:21,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:21,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911800341] [2024-02-19 15:02:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:21,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:21,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:21,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911800341] [2024-02-19 15:02:21,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911800341] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:21,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938361380] [2024-02-19 15:02:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:21,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:21,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:21,821 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 15:02:21,848 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 15:02:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:21,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 28 conjunts are in the unsatisfiable core [2024-02-19 15:02:21,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:21,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:02:22,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-02-19 15:02:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:22,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:23,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 105 [2024-02-19 15:02:23,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:02:23,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 157 treesize of output 149 [2024-02-19 15:02:23,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 85 [2024-02-19 15:02:23,624 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-02-19 15:02:23,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 107 treesize of output 103 [2024-02-19 15:02:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:23,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938361380] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:02:23,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:02:23,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-02-19 15:02:23,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134014395] [2024-02-19 15:02:23,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:02:23,921 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 15:02:23,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:23,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 15:02:23,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-02-19 15:02:24,104 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:02:24,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 84 transitions, 822 flow. Second operand has 23 states, 23 states have (on average 10.73913043478261) internal successors, (247), 23 states have internal predecessors, (247), 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 15:02:24,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:24,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:02:24,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:25,004 INFO L124 PetriNetUnfolderBase]: 1689/2443 cut-off events. [2024-02-19 15:02:25,004 INFO L125 PetriNetUnfolderBase]: For 6943/7039 co-relation queries the response was YES. [2024-02-19 15:02:25,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12931 conditions, 2443 events. 1689/2443 cut-off events. For 6943/7039 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11265 event pairs, 115 based on Foata normal form. 25/2434 useless extension candidates. Maximal degree in co-relation 10146. Up to 1934 conditions per place. [2024-02-19 15:02:25,025 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 169 selfloop transitions, 65 changer transitions 1/242 dead transitions. [2024-02-19 15:02:25,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 242 transitions, 2902 flow [2024-02-19 15:02:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-19 15:02:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-19 15:02:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 255 transitions. [2024-02-19 15:02:25,028 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-02-19 15:02:25,028 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2024-02-19 15:02:25,028 INFO L507 AbstractCegarLoop]: Abstraction has has 62 places, 242 transitions, 2902 flow [2024-02-19 15:02:25,029 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.73913043478261) internal successors, (247), 23 states have internal predecessors, (247), 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 15:02:25,029 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:25,029 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, 1] [2024-02-19 15:02:25,044 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 15:02:25,241 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:25,241 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 15:02:25,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash -229890622, now seen corresponding path program 2 times [2024-02-19 15:02:25,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:25,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038290301] [2024-02-19 15:02:25,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:25,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:25,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:25,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038290301] [2024-02-19 15:02:25,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038290301] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145921753] [2024-02-19 15:02:25,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:02:25,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:25,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:25,700 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 15:02:25,722 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 15:02:25,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:02:25,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:02:25,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-19 15:02:25,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:25,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:02:25,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-02-19 15:02:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:25,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:26,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 61 [2024-02-19 15:02:26,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:02:26,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 79 [2024-02-19 15:02:26,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2024-02-19 15:02:26,779 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-19 15:02:26,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 1 [2024-02-19 15:02:26,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2024-02-19 15:02:26,788 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-19 15:02:26,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 1 [2024-02-19 15:02:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:26,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145921753] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:02:26,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:02:26,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 20 [2024-02-19 15:02:26,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970640564] [2024-02-19 15:02:26,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:02:26,817 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-19 15:02:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-19 15:02:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-02-19 15:02:26,932 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-19 15:02:26,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 242 transitions, 2902 flow. Second operand has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 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 15:02:26,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:26,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-19 15:02:26,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:28,219 INFO L124 PetriNetUnfolderBase]: 2287/3313 cut-off events. [2024-02-19 15:02:28,220 INFO L125 PetriNetUnfolderBase]: For 10157/10307 co-relation queries the response was YES. [2024-02-19 15:02:28,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20666 conditions, 3313 events. 2287/3313 cut-off events. For 10157/10307 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 16258 event pairs, 107 based on Foata normal form. 9/3296 useless extension candidates. Maximal degree in co-relation 15967. Up to 2648 conditions per place. [2024-02-19 15:02:28,244 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 277 selfloop transitions, 113 changer transitions 2/397 dead transitions. [2024-02-19 15:02:28,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 397 transitions, 5476 flow [2024-02-19 15:02:28,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-19 15:02:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-19 15:02:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 333 transitions. [2024-02-19 15:02:28,246 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4530612244897959 [2024-02-19 15:02:28,246 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 45 predicate places. [2024-02-19 15:02:28,246 INFO L507 AbstractCegarLoop]: Abstraction has has 82 places, 397 transitions, 5476 flow [2024-02-19 15:02:28,247 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 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 15:02:28,247 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:28,247 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, 1] [2024-02-19 15:02:28,259 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 15:02:28,458 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:28,459 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 15:02:28,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash 794514740, now seen corresponding path program 3 times [2024-02-19 15:02:28,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:28,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095915026] [2024-02-19 15:02:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:28,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:28,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095915026] [2024-02-19 15:02:28,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095915026] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77748850] [2024-02-19 15:02:28,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:02:28,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:28,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:28,882 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 15:02:28,904 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 15:02:28,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 15:02:28,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:02:28,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 28 conjunts are in the unsatisfiable core [2024-02-19 15:02:28,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:28,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:02:29,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2024-02-19 15:02:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:29,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:29,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2024-02-19 15:02:29,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2024-02-19 15:02:30,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2024-02-19 15:02:30,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2024-02-19 15:02:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77748850] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:02:30,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:02:30,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2024-02-19 15:02:30,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873103755] [2024-02-19 15:02:30,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:02:30,045 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 15:02:30,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:30,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 15:02:30,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2024-02-19 15:02:30,129 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:02:30,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 397 transitions, 5476 flow. Second operand has 26 states, 26 states have (on average 8.692307692307692) internal successors, (226), 26 states have internal predecessors, (226), 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 15:02:30,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:30,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:02:30,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:32,515 INFO L124 PetriNetUnfolderBase]: 4150/5972 cut-off events. [2024-02-19 15:02:32,515 INFO L125 PetriNetUnfolderBase]: For 19870/19972 co-relation queries the response was YES. [2024-02-19 15:02:32,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43004 conditions, 5972 events. 4150/5972 cut-off events. For 19870/19972 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 32067 event pairs, 54 based on Foata normal form. 10/5974 useless extension candidates. Maximal degree in co-relation 29698. Up to 4773 conditions per place. [2024-02-19 15:02:32,575 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 592 selfloop transitions, 271 changer transitions 4/870 dead transitions. [2024-02-19 15:02:32,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 870 transitions, 13505 flow [2024-02-19 15:02:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-19 15:02:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-19 15:02:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 503 transitions. [2024-02-19 15:02:32,578 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4226890756302521 [2024-02-19 15:02:32,579 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 78 predicate places. [2024-02-19 15:02:32,579 INFO L507 AbstractCegarLoop]: Abstraction has has 115 places, 870 transitions, 13505 flow [2024-02-19 15:02:32,580 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.692307692307692) internal successors, (226), 26 states have internal predecessors, (226), 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 15:02:32,580 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:32,580 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, 1] [2024-02-19 15:02:32,607 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 15:02:32,793 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:32,793 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 15:02:32,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1528974930, now seen corresponding path program 4 times [2024-02-19 15:02:32,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:32,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853350899] [2024-02-19 15:02:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:32,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:33,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:33,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853350899] [2024-02-19 15:02:33,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853350899] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:33,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070440633] [2024-02-19 15:02:33,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:02:33,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:33,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:33,245 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 15:02:33,259 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 15:02:33,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:02:33,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:02:33,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 15:02:33,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:33,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-02-19 15:02:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:33,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:33,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:02:33,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 49 [2024-02-19 15:02:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070440633] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:02:33,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:02:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 24 [2024-02-19 15:02:33,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291149191] [2024-02-19 15:02:33,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:02:33,791 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 15:02:33,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 15:02:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2024-02-19 15:02:33,853 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-02-19 15:02:33,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 870 transitions, 13505 flow. Second operand has 25 states, 25 states have (on average 7.96) internal successors, (199), 25 states have internal predecessors, (199), 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 15:02:33,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:33,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-02-19 15:02:33,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:36,367 INFO L124 PetriNetUnfolderBase]: 9101/13041 cut-off events. [2024-02-19 15:02:36,368 INFO L125 PetriNetUnfolderBase]: For 93135/93488 co-relation queries the response was YES. [2024-02-19 15:02:36,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98902 conditions, 13041 events. 9101/13041 cut-off events. For 93135/93488 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 72785 event pairs, 90 based on Foata normal form. 195/13178 useless extension candidates. Maximal degree in co-relation 66612. Up to 9450 conditions per place. [2024-02-19 15:02:36,642 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 1313 selfloop transitions, 357 changer transitions 6/1693 dead transitions. [2024-02-19 15:02:36,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 1693 transitions, 29300 flow [2024-02-19 15:02:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-19 15:02:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-19 15:02:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 373 transitions. [2024-02-19 15:02:36,645 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3806122448979592 [2024-02-19 15:02:36,647 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 105 predicate places. [2024-02-19 15:02:36,648 INFO L507 AbstractCegarLoop]: Abstraction has has 142 places, 1693 transitions, 29300 flow [2024-02-19 15:02:36,648 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.96) internal successors, (199), 25 states have internal predecessors, (199), 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 15:02:36,649 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:36,649 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, 1] [2024-02-19 15:02:36,663 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 15:02:36,860 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:36,861 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 15:02:36,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash 722493982, now seen corresponding path program 5 times [2024-02-19 15:02:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:36,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022246031] [2024-02-19 15:02:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:36,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:37,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:37,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022246031] [2024-02-19 15:02:37,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022246031] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:37,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552377588] [2024-02-19 15:02:37,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:02:37,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:37,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:37,267 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 15:02:37,295 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 15:02:37,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:02:37,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:02:37,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 26 conjunts are in the unsatisfiable core [2024-02-19 15:02:37,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:37,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-19 15:02:37,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:02:37,674 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 83 treesize of output 71 [2024-02-19 15:02:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:37,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:38,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2024-02-19 15:02:38,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2024-02-19 15:02:38,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2024-02-19 15:02:38,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2024-02-19 15:02:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:38,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552377588] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:02:38,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:02:38,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 29 [2024-02-19 15:02:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535362915] [2024-02-19 15:02:38,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:02:38,857 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-19 15:02:38,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-19 15:02:38,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2024-02-19 15:02:38,903 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:02:38,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 1693 transitions, 29300 flow. Second operand has 30 states, 30 states have (on average 8.366666666666667) internal successors, (251), 30 states have internal predecessors, (251), 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 15:02:38,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:38,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:02:38,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:47,663 INFO L124 PetriNetUnfolderBase]: 13979/19885 cut-off events. [2024-02-19 15:02:47,664 INFO L125 PetriNetUnfolderBase]: For 167249/167847 co-relation queries the response was YES. [2024-02-19 15:02:47,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169338 conditions, 19885 events. 13979/19885 cut-off events. For 167249/167847 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 116675 event pairs, 274 based on Foata normal form. 337/20174 useless extension candidates. Maximal degree in co-relation 113357. Up to 14675 conditions per place. [2024-02-19 15:02:47,823 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 1681 selfloop transitions, 1413 changer transitions 9/3124 dead transitions. [2024-02-19 15:02:47,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 3124 transitions, 60034 flow [2024-02-19 15:02:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-02-19 15:02:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-02-19 15:02:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 784 transitions. [2024-02-19 15:02:47,828 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-02-19 15:02:47,828 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 160 predicate places. [2024-02-19 15:02:47,828 INFO L507 AbstractCegarLoop]: Abstraction has has 197 places, 3124 transitions, 60034 flow [2024-02-19 15:02:47,829 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.366666666666667) internal successors, (251), 30 states have internal predecessors, (251), 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 15:02:47,829 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:47,829 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:02:47,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-02-19 15:02:48,040 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:48,040 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 15:02:48,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:48,041 INFO L85 PathProgramCache]: Analyzing trace with hash 388482049, now seen corresponding path program 6 times [2024-02-19 15:02:48,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:48,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427614342] [2024-02-19 15:02:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:48,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:48,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:48,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427614342] [2024-02-19 15:02:48,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427614342] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:48,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227408973] [2024-02-19 15:02:48,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:02:48,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:48,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:48,138 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 15:02:48,140 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 15:02:48,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 15:02:48,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:02:48,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:02:48,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:48,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:48,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227408973] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:02:48,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:02:48,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-02-19 15:02:48,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150618906] [2024-02-19 15:02:48,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:02:48,387 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:02:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:48,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:02:48,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:02:48,394 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:02:48,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 3124 transitions, 60034 flow. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 15:02:48,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:48,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:02:48,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:59,534 INFO L124 PetriNetUnfolderBase]: 19122/27196 cut-off events. [2024-02-19 15:02:59,534 INFO L125 PetriNetUnfolderBase]: For 185620/185620 co-relation queries the response was YES. [2024-02-19 15:02:59,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254829 conditions, 27196 events. 19122/27196 cut-off events. For 185620/185620 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 162174 event pairs, 199 based on Foata normal form. 436/27630 useless extension candidates. Maximal degree in co-relation 134817. Up to 20207 conditions per place. [2024-02-19 15:02:59,782 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 4198 selfloop transitions, 1142 changer transitions 7/5348 dead transitions. [2024-02-19 15:02:59,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 5348 transitions, 110628 flow [2024-02-19 15:02:59,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-02-19 15:02:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-02-19 15:02:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 478 transitions. [2024-02-19 15:02:59,799 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42678571428571427 [2024-02-19 15:02:59,800 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 190 predicate places. [2024-02-19 15:02:59,800 INFO L507 AbstractCegarLoop]: Abstraction has has 227 places, 5348 transitions, 110628 flow [2024-02-19 15:02:59,800 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 15:02:59,800 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:59,800 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:02:59,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-02-19 15:03:00,001 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:00,001 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 15:03:00,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:00,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1398497023, now seen corresponding path program 7 times [2024-02-19 15:03:00,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:00,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115141864] [2024-02-19 15:03:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:00,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:00,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:00,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115141864] [2024-02-19 15:03:00,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115141864] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:00,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799040041] [2024-02-19 15:03:00,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:03:00,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:00,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:00,152 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 15:03:00,164 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 15:03:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:00,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:03:00,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:00,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:00,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799040041] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:00,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:00,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-19 15:03:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926414298] [2024-02-19 15:03:00,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:00,327 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 15:03:00,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:00,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 15:03:00,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-02-19 15:03:00,343 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:03:00,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 5348 transitions, 110628 flow. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 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 15:03:00,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:00,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:03:00,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:14,354 INFO L124 PetriNetUnfolderBase]: 16639/23921 cut-off events. [2024-02-19 15:03:14,354 INFO L125 PetriNetUnfolderBase]: For 198612/198612 co-relation queries the response was YES. [2024-02-19 15:03:14,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244594 conditions, 23921 events. 16639/23921 cut-off events. For 198612/198612 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 143353 event pairs, 147 based on Foata normal form. 520/24439 useless extension candidates. Maximal degree in co-relation 125822. Up to 17973 conditions per place. [2024-02-19 15:03:14,567 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 4146 selfloop transitions, 194 changer transitions 22/4882 dead transitions. [2024-02-19 15:03:14,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 4882 transitions, 109869 flow [2024-02-19 15:03:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 15:03:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 15:03:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-02-19 15:03:14,569 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-02-19 15:03:14,569 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 195 predicate places. [2024-02-19 15:03:14,569 INFO L507 AbstractCegarLoop]: Abstraction has has 232 places, 4882 transitions, 109869 flow [2024-02-19 15:03:14,569 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 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 15:03:14,569 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:14,570 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:03:14,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-02-19 15:03:14,784 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,SelfDestructingSolverStorable10 [2024-02-19 15:03:14,785 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 15:03:14,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:14,785 INFO L85 PathProgramCache]: Analyzing trace with hash 844515521, now seen corresponding path program 8 times [2024-02-19 15:03:14,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:14,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172677576] [2024-02-19 15:03:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:14,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:14,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172677576] [2024-02-19 15:03:14,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172677576] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830507865] [2024-02-19 15:03:14,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:03:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:14,876 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 15:03:14,877 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 15:03:14,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:03:14,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:14,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 15:03:14,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:15,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830507865] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:15,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-19 15:03:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956703114] [2024-02-19 15:03:15,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:15,137 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 15:03:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 15:03:15,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-02-19 15:03:15,167 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:03:15,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 4882 transitions, 109869 flow. Second operand has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 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 15:03:15,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:15,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:03:15,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:26,015 INFO L124 PetriNetUnfolderBase]: 13516/19652 cut-off events. [2024-02-19 15:03:26,015 INFO L125 PetriNetUnfolderBase]: For 205455/205455 co-relation queries the response was YES. [2024-02-19 15:03:26,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218431 conditions, 19652 events. 13516/19652 cut-off events. For 205455/205455 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 117100 event pairs, 137 based on Foata normal form. 562/20212 useless extension candidates. Maximal degree in co-relation 135934. Up to 14520 conditions per place. [2024-02-19 15:03:26,180 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 3701 selfloop transitions, 184 changer transitions 189/4353 dead transitions. [2024-02-19 15:03:26,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 4353 transitions, 106460 flow [2024-02-19 15:03:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 15:03:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 15:03:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-02-19 15:03:26,181 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-02-19 15:03:26,182 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 194 predicate places. [2024-02-19 15:03:26,182 INFO L507 AbstractCegarLoop]: Abstraction has has 231 places, 4353 transitions, 106460 flow [2024-02-19 15:03:26,182 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 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 15:03:26,182 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:26,182 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, 1, 1, 1, 1] [2024-02-19 15:03:26,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-02-19 15:03:26,389 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:26,389 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 15:03:26,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:26,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1027018800, now seen corresponding path program 1 times [2024-02-19 15:03:26,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:26,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995934471] [2024-02-19 15:03:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:26,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:26,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995934471] [2024-02-19 15:03:26,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995934471] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:26,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799140553] [2024-02-19 15:03:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:26,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:26,494 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 15:03:26,546 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 15:03:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:26,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:03:26,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:26,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799140553] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:26,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:26,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-02-19 15:03:26,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280353608] [2024-02-19 15:03:26,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:26,705 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-19 15:03:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-19 15:03:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-02-19 15:03:26,738 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:03:26,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 4353 transitions, 106460 flow. Second operand has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 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 15:03:26,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:26,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:03:26,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:35,002 INFO L124 PetriNetUnfolderBase]: 10400/15181 cut-off events. [2024-02-19 15:03:35,003 INFO L125 PetriNetUnfolderBase]: For 170090/170090 co-relation queries the response was YES. [2024-02-19 15:03:35,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180423 conditions, 15181 events. 10400/15181 cut-off events. For 170090/170090 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 86981 event pairs, 117 based on Foata normal form. 326/15505 useless extension candidates. Maximal degree in co-relation 145760. Up to 11607 conditions per place. [2024-02-19 15:03:35,138 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 2246 selfloop transitions, 3 changer transitions 982/3688 dead transitions. [2024-02-19 15:03:35,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 3688 transitions, 96383 flow [2024-02-19 15:03:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:03:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:03:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-02-19 15:03:35,139 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-02-19 15:03:35,140 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 194 predicate places. [2024-02-19 15:03:35,140 INFO L507 AbstractCegarLoop]: Abstraction has has 231 places, 3688 transitions, 96383 flow [2024-02-19 15:03:35,140 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 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 15:03:35,140 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:35,140 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:03:35,151 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 15:03:35,350 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,SelfDestructingSolverStorable12 [2024-02-19 15:03:35,351 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 15:03:35,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:35,352 INFO L85 PathProgramCache]: Analyzing trace with hash 63646420, now seen corresponding path program 9 times [2024-02-19 15:03:35,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:35,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143091160] [2024-02-19 15:03:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:35,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:35,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:35,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143091160] [2024-02-19 15:03:35,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143091160] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:35,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256724228] [2024-02-19 15:03:35,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:03:35,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:35,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:35,448 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 15:03:35,449 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 15:03:35,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:03:35,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:35,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:03:35,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:35,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:35,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256724228] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:35,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:35,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-02-19 15:03:35,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117575266] [2024-02-19 15:03:35,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:35,724 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-19 15:03:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-19 15:03:35,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-02-19 15:03:35,767 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:03:35,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 3688 transitions, 96383 flow. Second operand has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 21 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 15:03:35,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:35,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:03:35,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:49,394 INFO L124 PetriNetUnfolderBase]: 17158/24632 cut-off events. [2024-02-19 15:03:49,399 INFO L125 PetriNetUnfolderBase]: For 307732/307732 co-relation queries the response was YES. [2024-02-19 15:03:49,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319546 conditions, 24632 events. 17158/24632 cut-off events. For 307732/307732 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 147717 event pairs, 99 based on Foata normal form. 60/24690 useless extension candidates. Maximal degree in co-relation 273420. Up to 18962 conditions per place. [2024-02-19 15:03:49,650 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 4717 selfloop transitions, 1220 changer transitions 1277/7386 dead transitions. [2024-02-19 15:03:49,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 7386 transitions, 210859 flow [2024-02-19 15:03:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-19 15:03:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-19 15:03:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 345 transitions. [2024-02-19 15:03:49,652 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-02-19 15:03:49,653 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 213 predicate places. [2024-02-19 15:03:49,653 INFO L507 AbstractCegarLoop]: Abstraction has has 250 places, 7386 transitions, 210859 flow [2024-02-19 15:03:49,653 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 21 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 15:03:49,653 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:49,653 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:03:49,664 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 15:03:49,858 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,SelfDestructingSolverStorable13 [2024-02-19 15:03:49,859 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 15:03:49,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:49,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1128968660, now seen corresponding path program 10 times [2024-02-19 15:03:49,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:49,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512027754] [2024-02-19 15:03:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:49,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:49,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512027754] [2024-02-19 15:03:49,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512027754] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:49,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375588583] [2024-02-19 15:03:49,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:03:49,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:49,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:49,978 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 15:03:49,992 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 15:03:50,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:03:50,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:50,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:03:50,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:03:50,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:03:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375588583] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:50,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-02-19 15:03:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200744991] [2024-02-19 15:03:50,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:50,236 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:03:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:03:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:03:50,269 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:03:50,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 7386 transitions, 210859 flow. Second operand has 19 states, 19 states have (on average 7.421052631578948) internal successors, (141), 19 states have internal predecessors, (141), 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 15:03:50,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:50,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:03:50,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:05:02,892 INFO L124 PetriNetUnfolderBase]: 32852/46636 cut-off events. [2024-02-19 15:05:02,893 INFO L125 PetriNetUnfolderBase]: For 525742/525742 co-relation queries the response was YES. [2024-02-19 15:05:02,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658017 conditions, 46636 events. 32852/46636 cut-off events. For 525742/525742 co-relation queries the response was YES. Maximal size of possible extension queue 1225. Compared 283039 event pairs, 63 based on Foata normal form. 60/46694 useless extension candidates. Maximal degree in co-relation 604326. Up to 36877 conditions per place. [2024-02-19 15:05:03,451 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 8338 selfloop transitions, 3348 changer transitions 1291/12978 dead transitions. [2024-02-19 15:05:03,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 12978 transitions, 389653 flow [2024-02-19 15:05:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-02-19 15:05:03,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2024-02-19 15:05:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 1685 transitions. [2024-02-19 15:05:03,455 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39787485242030696 [2024-02-19 15:05:03,456 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 333 predicate places. [2024-02-19 15:05:03,456 INFO L507 AbstractCegarLoop]: Abstraction has has 370 places, 12978 transitions, 389653 flow [2024-02-19 15:05:03,456 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.421052631578948) internal successors, (141), 19 states have internal predecessors, (141), 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 15:05:03,456 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:05:03,456 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:05:03,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-19 15:05:03,667 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,SelfDestructingSolverStorable14 [2024-02-19 15:05:03,667 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 15:05:03,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:05:03,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1587329728, now seen corresponding path program 11 times [2024-02-19 15:05:03,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:05:03,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057698211] [2024-02-19 15:05:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:05:03,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:05:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:05:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:05:03,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:05:03,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057698211] [2024-02-19 15:05:03,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057698211] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:05:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043566024] [2024-02-19 15:05:03,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:05:03,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:05:03,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:05:03,753 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 15:05:03,776 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 15:05:03,857 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:05:03,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:05:03,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:05:03,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:05:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:05:03,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:05:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:05:04,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043566024] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:05:04,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:05:04,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-02-19 15:05:04,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082266123] [2024-02-19 15:05:04,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:05:04,016 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 15:05:04,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:05:04,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 15:05:04,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-02-19 15:05:04,041 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:05:04,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 12978 transitions, 389653 flow. Second operand has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 17 states have internal predecessors, (133), 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 15:05:04,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:05:04,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:05:04,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:07:47,453 INFO L124 PetriNetUnfolderBase]: 38472/54560 cut-off events. [2024-02-19 15:07:47,454 INFO L125 PetriNetUnfolderBase]: For 628061/628061 co-relation queries the response was YES. [2024-02-19 15:07:47,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829099 conditions, 54560 events. 38472/54560 cut-off events. For 628061/628061 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 339128 event pairs, 77 based on Foata normal form. 62/54620 useless extension candidates. Maximal degree in co-relation 771509. Up to 44250 conditions per place. [2024-02-19 15:07:48,158 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 10282 selfloop transitions, 3877 changer transitions 1291/15451 dead transitions. [2024-02-19 15:07:48,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 15451 transitions, 493937 flow [2024-02-19 15:07:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-02-19 15:07:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-02-19 15:07:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 681 transitions. [2024-02-19 15:07:48,176 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39708454810495625 [2024-02-19 15:07:48,176 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 381 predicate places. [2024-02-19 15:07:48,176 INFO L507 AbstractCegarLoop]: Abstraction has has 418 places, 15451 transitions, 493937 flow [2024-02-19 15:07:48,176 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 17 states have internal predecessors, (133), 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 15:07:48,177 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:07:48,177 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:07:48,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-02-19 15:07:48,388 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,SelfDestructingSolverStorable15 [2024-02-19 15:07:48,388 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 15:07:48,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:07:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1723127380, now seen corresponding path program 12 times [2024-02-19 15:07:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:07:48,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572118885] [2024-02-19 15:07:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:07:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:07:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:07:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:07:48,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:07:48,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572118885] [2024-02-19 15:07:48,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572118885] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:07:48,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951150234] [2024-02-19 15:07:48,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:07:48,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:07:48,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:07:48,474 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 15:07:48,475 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 15:07:48,573 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 15:07:48,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:07:48,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:07:48,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:07:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:48,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:07:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:07:48,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951150234] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:07:48,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:07:48,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-02-19 15:07:48,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745428581] [2024-02-19 15:07:48,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:07:48,733 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:07:48,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:07:48,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:07:48,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:07:48,772 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:07:48,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 15451 transitions, 493937 flow. Second operand has 18 states, 18 states have (on average 7.666666666666667) internal successors, (138), 18 states have internal predecessors, (138), 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 15:07:48,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:07:48,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:07:48,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:29,537 INFO L124 PetriNetUnfolderBase]: 40590/57547 cut-off events. [2024-02-19 15:11:29,537 INFO L125 PetriNetUnfolderBase]: For 658619/658619 co-relation queries the response was YES. [2024-02-19 15:11:29,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933955 conditions, 57547 events. 40590/57547 cut-off events. For 658619/658619 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 360529 event pairs, 85 based on Foata normal form. 62/57607 useless extension candidates. Maximal degree in co-relation 872614. Up to 47040 conditions per place. [2024-02-19 15:11:30,590 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 10678 selfloop transitions, 4507 changer transitions 1291/16477 dead transitions. [2024-02-19 15:11:30,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 16477 transitions, 559385 flow [2024-02-19 15:11:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-02-19 15:11:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-02-19 15:11:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1040 transitions. [2024-02-19 15:11:30,593 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39097744360902253 [2024-02-19 15:11:30,593 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 456 predicate places. [2024-02-19 15:11:30,593 INFO L507 AbstractCegarLoop]: Abstraction has has 493 places, 16477 transitions, 559385 flow [2024-02-19 15:11:30,593 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.666666666666667) internal successors, (138), 18 states have internal predecessors, (138), 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 15:11:30,594 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:30,594 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:11:30,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-19 15:11:30,806 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:30,807 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 15:11:30,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:30,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2143014238, now seen corresponding path program 13 times [2024-02-19 15:11:30,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:30,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210765596] [2024-02-19 15:11:30,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:11:30,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:30,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210765596] [2024-02-19 15:11:30,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210765596] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:30,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491129126] [2024-02-19 15:11:30,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:11:30,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:30,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:30,894 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 15:11:30,895 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 15:11:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:30,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:11:30,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:11:31,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:11:31,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491129126] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:31,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:31,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-19 15:11:31,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532597258] [2024-02-19 15:11:31,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:31,168 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:11:31,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:11:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:11:31,200 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:11:31,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 16477 transitions, 559385 flow. Second operand has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 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 15:11:31,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:31,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:11:31,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:15:20,541 INFO L124 PetriNetUnfolderBase]: 41248/58482 cut-off events. [2024-02-19 15:15:20,541 INFO L125 PetriNetUnfolderBase]: For 724745/724745 co-relation queries the response was YES. [2024-02-19 15:15:20,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003201 conditions, 58482 events. 41248/58482 cut-off events. For 724745/724745 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 367295 event pairs, 87 based on Foata normal form. 62/58542 useless extension candidates. Maximal degree in co-relation 938289. Up to 47874 conditions per place. [2024-02-19 15:15:21,530 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 11832 selfloop transitions, 2671 changer transitions 1291/16787 dead transitions. [2024-02-19 15:15:21,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 16787 transitions, 601916 flow [2024-02-19 15:15:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-19 15:15:21,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-19 15:15:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 300 transitions. [2024-02-19 15:15:21,532 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-02-19 15:15:21,532 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 473 predicate places. [2024-02-19 15:15:21,532 INFO L507 AbstractCegarLoop]: Abstraction has has 510 places, 16787 transitions, 601916 flow [2024-02-19 15:15:21,533 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 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 15:15:21,533 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:15:21,533 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:15:21,544 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 15:15:21,743 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-19 15:15:21,744 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 15:15:21,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:15:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2016155406, now seen corresponding path program 14 times [2024-02-19 15:15:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:15:21,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588332498] [2024-02-19 15:15:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:15:21,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:15:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:15:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:15:21,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:15:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588332498] [2024-02-19 15:15:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588332498] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:15:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893543958] [2024-02-19 15:15:21,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:15:21,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:15:21,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:15:21,826 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 15:15:21,827 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 15:15:21,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:15:21,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:15:21,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:15:21,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:15:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:15:22,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:15:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:15:22,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893543958] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:15:22,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:15:22,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-19 15:15:22,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409656287] [2024-02-19 15:15:22,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:15:22,126 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-19 15:15:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:15:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-19 15:15:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-02-19 15:15:22,168 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:15:22,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 16787 transitions, 601916 flow. Second operand has 20 states, 20 states have (on average 8.35) internal successors, (167), 20 states have internal predecessors, (167), 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 15:15:22,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:15:22,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:15:22,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15