./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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-buffer-mult.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 e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:32:39,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:32:39,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:32:39,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:32:39,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:32:39,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:32:39,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:32:39,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:32:39,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:32:39,830 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:32:39,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:32:39,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:32:39,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:32:39,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:32:39,832 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:32:39,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:32:39,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:32:39,832 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:32:39,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:32:39,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:32:39,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:32:39,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:32:39,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:32:39,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:32:39,835 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:32:39,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:32:39,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:32:39,836 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:32:39,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:32:39,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:32:39,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:32:39,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:32:39,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:32:39,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:32:39,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:32:39,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:32:39,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:32:39,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:32:39,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:32:39,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:32:39,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:32:39,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:32:39,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:32:39,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe [2024-06-27 17:32:40,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:32:40,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:32:40,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:32:40,101 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:32:40,103 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:32:40,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-06-27 17:32:41,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:32:41,426 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:32:41,427 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-06-27 17:32:41,433 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0247939/b2598c3493df40bfbbf402545018a990/FLAG26c1d38fc [2024-06-27 17:32:41,444 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0247939/b2598c3493df40bfbbf402545018a990 [2024-06-27 17:32:41,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:32:41,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:32:41,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:32:41,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:32:41,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:32:41,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89eadca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41, skipping insertion in model container [2024-06-27 17:32:41,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,474 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:32:41,655 WARN L247 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-buffer-mult.wvr.c[4270,4283] [2024-06-27 17:32:41,681 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:32:41,688 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:32:41,725 WARN L247 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-buffer-mult.wvr.c[4270,4283] [2024-06-27 17:32:41,738 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:32:41,758 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:32:41,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41 WrapperNode [2024-06-27 17:32:41,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:32:41,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:32:41,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:32:41,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:32:41,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,811 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 296 [2024-06-27 17:32:41,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:32:41,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:32:41,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:32:41,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:32:41,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,837 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,857 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-06-27 17:32:41,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:32:41,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:32:41,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:32:41,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:32:41,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (1/1) ... [2024-06-27 17:32:41,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:32:41,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:41,978 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) [2024-06-27 17:32:42,038 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 [2024-06-27 17:32:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:32:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 17:32:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 17:32:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 17:32:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 17:32:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 17:32:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 17:32:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 17:32:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 17:32:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 17:32:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 17:32:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 17:32:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 17:32:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:32:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 17:32:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:32:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:32:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 17:32:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:32:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:32:42,069 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:32:42,155 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:32:42,157 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:32:42,499 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:32:42,500 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:32:42,760 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:32:42,760 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-27 17:32:42,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:32:42 BoogieIcfgContainer [2024-06-27 17:32:42,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:32:42,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:32:42,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:32:42,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:32:42,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:32:41" (1/3) ... [2024-06-27 17:32:42,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132ce9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:32:42, skipping insertion in model container [2024-06-27 17:32:42,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:41" (2/3) ... [2024-06-27 17:32:42,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132ce9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:32:42, skipping insertion in model container [2024-06-27 17:32:42,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:32:42" (3/3) ... [2024-06-27 17:32:42,768 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-06-27 17:32:42,776 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:32:42,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:32:42,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 17:32:42,784 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:32:42,843 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 17:32:42,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 50 transitions, 128 flow [2024-06-27 17:32:42,912 INFO L124 PetriNetUnfolderBase]: 6/46 cut-off events. [2024-06-27 17:32:42,913 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:32:42,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 6/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-06-27 17:32:42,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 50 transitions, 128 flow [2024-06-27 17:32:42,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 114 flow [2024-06-27 17:32:42,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:32:42,939 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@528e1f16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:32:42,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 17:32:42,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:32:42,964 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-06-27 17:32:42,964 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:32:42,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:42,965 INFO L208 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] [2024-06-27 17:32:42,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:42,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash -616314390, now seen corresponding path program 1 times [2024-06-27 17:32:42,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:42,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221483556] [2024-06-27 17:32:42,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:42,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:32:43,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:43,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221483556] [2024-06-27 17:32:43,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221483556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:43,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:43,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:32:43,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893709031] [2024-06-27 17:32:43,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:43,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:32:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:32:43,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:32:43,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-06-27 17:32:43,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-06-27 17:32:43,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:43,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-06-27 17:32:43,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:44,047 INFO L124 PetriNetUnfolderBase]: 2407/3722 cut-off events. [2024-06-27 17:32:44,047 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-06-27 17:32:44,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6991 conditions, 3722 events. 2407/3722 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21463 event pairs, 472 based on Foata normal form. 1/3532 useless extension candidates. Maximal degree in co-relation 6303. Up to 2067 conditions per place. [2024-06-27 17:32:44,074 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 41 selfloop transitions, 3 changer transitions 1/62 dead transitions. [2024-06-27 17:32:44,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 253 flow [2024-06-27 17:32:44,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:32:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:32:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-27 17:32:44,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2024-06-27 17:32:44,086 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 114 flow. Second operand 3 states and 109 transitions. [2024-06-27 17:32:44,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 253 flow [2024-06-27 17:32:44,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 227 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 17:32:44,098 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 117 flow [2024-06-27 17:32:44,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-06-27 17:32:44,102 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-06-27 17:32:44,102 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 117 flow [2024-06-27 17:32:44,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-06-27 17:32:44,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:44,103 INFO L208 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, 1] [2024-06-27 17:32:44,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:32:44,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:44,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1330320565, now seen corresponding path program 1 times [2024-06-27 17:32:44,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:44,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051806818] [2024-06-27 17:32:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:44,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:32:44,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:44,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051806818] [2024-06-27 17:32:44,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051806818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:44,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:44,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:32:44,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465434544] [2024-06-27 17:32:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:44,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:32:44,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:32:44,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:32:44,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-06-27 17:32:44,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-06-27 17:32:44,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:44,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-06-27 17:32:44,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:44,559 INFO L124 PetriNetUnfolderBase]: 2397/3638 cut-off events. [2024-06-27 17:32:44,560 INFO L125 PetriNetUnfolderBase]: For 617/617 co-relation queries the response was YES. [2024-06-27 17:32:44,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7569 conditions, 3638 events. 2397/3638 cut-off events. For 617/617 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 20719 event pairs, 549 based on Foata normal form. 84/3565 useless extension candidates. Maximal degree in co-relation 2645. Up to 2321 conditions per place. [2024-06-27 17:32:44,578 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 49 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-06-27 17:32:44,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 275 flow [2024-06-27 17:32:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:32:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:32:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-06-27 17:32:44,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2024-06-27 17:32:44,583 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 117 flow. Second operand 3 states and 112 transitions. [2024-06-27 17:32:44,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 275 flow [2024-06-27 17:32:44,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:44,588 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 128 flow [2024-06-27 17:32:44,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-06-27 17:32:44,589 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-06-27 17:32:44,589 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 128 flow [2024-06-27 17:32:44,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-06-27 17:32:44,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:44,590 INFO L208 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, 1] [2024-06-27 17:32:44,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:32:44,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:44,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash -74657177, now seen corresponding path program 1 times [2024-06-27 17:32:44,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:44,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887720915] [2024-06-27 17:32:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:44,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:32:44,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:44,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887720915] [2024-06-27 17:32:44,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887720915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:44,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:44,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:32:44,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906390960] [2024-06-27 17:32:44,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:44,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:32:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:32:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:32:44,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-06-27 17:32:44,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-06-27 17:32:44,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:44,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-06-27 17:32:44,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:45,005 INFO L124 PetriNetUnfolderBase]: 2362/3753 cut-off events. [2024-06-27 17:32:45,005 INFO L125 PetriNetUnfolderBase]: For 1405/1405 co-relation queries the response was YES. [2024-06-27 17:32:45,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8159 conditions, 3753 events. 2362/3753 cut-off events. For 1405/1405 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22732 event pairs, 571 based on Foata normal form. 35/3626 useless extension candidates. Maximal degree in co-relation 5968. Up to 2334 conditions per place. [2024-06-27 17:32:45,024 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 49 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-06-27 17:32:45,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 291 flow [2024-06-27 17:32:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:32:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:32:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-27 17:32:45,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-06-27 17:32:45,025 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 128 flow. Second operand 3 states and 110 transitions. [2024-06-27 17:32:45,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 291 flow [2024-06-27 17:32:45,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:45,027 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 140 flow [2024-06-27 17:32:45,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-06-27 17:32:45,028 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-06-27 17:32:45,028 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 140 flow [2024-06-27 17:32:45,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-06-27 17:32:45,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:45,029 INFO L208 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, 1, 1, 1, 1, 1] [2024-06-27 17:32:45,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:32:45,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:45,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash -145993112, now seen corresponding path program 1 times [2024-06-27 17:32:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711663091] [2024-06-27 17:32:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:32:45,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:45,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711663091] [2024-06-27 17:32:45,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711663091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:45,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:45,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:32:45,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741486776] [2024-06-27 17:32:45,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:45,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:32:45,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:45,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:32:45,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:32:45,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-06-27 17:32:45,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-06-27 17:32:45,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:45,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-06-27 17:32:45,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:45,506 INFO L124 PetriNetUnfolderBase]: 2793/4440 cut-off events. [2024-06-27 17:32:45,506 INFO L125 PetriNetUnfolderBase]: For 2274/2274 co-relation queries the response was YES. [2024-06-27 17:32:45,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10243 conditions, 4440 events. 2793/4440 cut-off events. For 2274/2274 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29367 event pairs, 2080 based on Foata normal form. 93/4057 useless extension candidates. Maximal degree in co-relation 4760. Up to 3077 conditions per place. [2024-06-27 17:32:45,523 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-06-27 17:32:45,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 331 flow [2024-06-27 17:32:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:32:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:32:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-06-27 17:32:45,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.685 [2024-06-27 17:32:45,525 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 140 flow. Second operand 4 states and 137 transitions. [2024-06-27 17:32:45,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 331 flow [2024-06-27 17:32:45,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:45,527 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 158 flow [2024-06-27 17:32:45,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-27 17:32:45,528 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-27 17:32:45,528 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 158 flow [2024-06-27 17:32:45,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-06-27 17:32:45,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:45,529 INFO L208 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, 1, 1, 1, 1, 1] [2024-06-27 17:32:45,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:32:45,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:45,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:45,530 INFO L85 PathProgramCache]: Analyzing trace with hash -745152938, now seen corresponding path program 1 times [2024-06-27 17:32:45,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:45,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095433494] [2024-06-27 17:32:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:45,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:32:45,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:45,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095433494] [2024-06-27 17:32:45,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095433494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:45,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:45,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:32:45,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068751499] [2024-06-27 17:32:45,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:45,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:32:45,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:45,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:32:45,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:32:45,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-06-27 17:32:45,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-06-27 17:32:45,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:45,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-06-27 17:32:45,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:46,038 INFO L124 PetriNetUnfolderBase]: 3453/5659 cut-off events. [2024-06-27 17:32:46,038 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2024-06-27 17:32:46,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12770 conditions, 5659 events. 3453/5659 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 40420 event pairs, 2644 based on Foata normal form. 132/5190 useless extension candidates. Maximal degree in co-relation 10432. Up to 3841 conditions per place. [2024-06-27 17:32:46,069 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 54 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-06-27 17:32:46,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 346 flow [2024-06-27 17:32:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:32:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:32:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-06-27 17:32:46,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-27 17:32:46,071 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 158 flow. Second operand 4 states and 135 transitions. [2024-06-27 17:32:46,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 346 flow [2024-06-27 17:32:46,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 342 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:46,078 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 177 flow [2024-06-27 17:32:46,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-27 17:32:46,080 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-06-27 17:32:46,080 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 177 flow [2024-06-27 17:32:46,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-06-27 17:32:46,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:46,081 INFO L208 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, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:46,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:32:46,081 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:46,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:46,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2121825037, now seen corresponding path program 1 times [2024-06-27 17:32:46,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:46,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815183700] [2024-06-27 17:32:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:46,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:46,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:46,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815183700] [2024-06-27 17:32:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815183700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:46,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:46,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:32:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242683904] [2024-06-27 17:32:46,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:46,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:32:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:46,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:32:46,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:32:46,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 17:32:46,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-06-27 17:32:46,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:46,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 17:32:46,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:47,942 INFO L124 PetriNetUnfolderBase]: 11369/16416 cut-off events. [2024-06-27 17:32:47,942 INFO L125 PetriNetUnfolderBase]: For 7768/7768 co-relation queries the response was YES. [2024-06-27 17:32:47,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38869 conditions, 16416 events. 11369/16416 cut-off events. For 7768/7768 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 108527 event pairs, 627 based on Foata normal form. 384/15859 useless extension candidates. Maximal degree in co-relation 31859. Up to 10097 conditions per place. [2024-06-27 17:32:48,001 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 117 selfloop transitions, 11 changer transitions 3/143 dead transitions. [2024-06-27 17:32:48,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 143 transitions, 731 flow [2024-06-27 17:32:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:32:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:32:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-06-27 17:32:48,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6542857142857142 [2024-06-27 17:32:48,003 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 177 flow. Second operand 7 states and 229 transitions. [2024-06-27 17:32:48,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 143 transitions, 731 flow [2024-06-27 17:32:48,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 143 transitions, 726 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:48,007 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 245 flow [2024-06-27 17:32:48,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-06-27 17:32:48,007 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-06-27 17:32:48,007 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 245 flow [2024-06-27 17:32:48,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-06-27 17:32:48,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:48,008 INFO L208 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, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:48,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:32:48,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:48,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:48,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1575763873, now seen corresponding path program 2 times [2024-06-27 17:32:48,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:48,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277551199] [2024-06-27 17:32:48,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:48,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:48,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:48,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277551199] [2024-06-27 17:32:48,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277551199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:48,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:48,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:32:48,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082894105] [2024-06-27 17:32:48,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:48,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:32:48,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:32:48,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:32:48,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 17:32:48,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 245 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 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) [2024-06-27 17:32:48,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:48,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 17:32:48,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:49,844 INFO L124 PetriNetUnfolderBase]: 11509/17260 cut-off events. [2024-06-27 17:32:49,844 INFO L125 PetriNetUnfolderBase]: For 13012/13040 co-relation queries the response was YES. [2024-06-27 17:32:49,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46879 conditions, 17260 events. 11509/17260 cut-off events. For 13012/13040 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 120463 event pairs, 1405 based on Foata normal form. 56/17168 useless extension candidates. Maximal degree in co-relation 37890. Up to 11761 conditions per place. [2024-06-27 17:32:49,988 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 85 selfloop transitions, 12 changer transitions 18/127 dead transitions. [2024-06-27 17:32:49,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 698 flow [2024-06-27 17:32:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:32:49,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:32:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-27 17:32:49,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-06-27 17:32:49,989 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 245 flow. Second operand 6 states and 194 transitions. [2024-06-27 17:32:49,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 698 flow [2024-06-27 17:32:50,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 127 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 17:32:50,008 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 312 flow [2024-06-27 17:32:50,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-06-27 17:32:50,009 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-06-27 17:32:50,009 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 312 flow [2024-06-27 17:32:50,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 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) [2024-06-27 17:32:50,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:50,010 INFO L208 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, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:50,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:32:50,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:50,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:50,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1963506172, now seen corresponding path program 1 times [2024-06-27 17:32:50,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262750420] [2024-06-27 17:32:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262750420] [2024-06-27 17:32:50,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262750420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:50,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:50,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:32:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438745424] [2024-06-27 17:32:50,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:50,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:32:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:32:50,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:32:50,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 17:32:50,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 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) [2024-06-27 17:32:50,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:50,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 17:32:50,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:51,955 INFO L124 PetriNetUnfolderBase]: 12883/19290 cut-off events. [2024-06-27 17:32:51,955 INFO L125 PetriNetUnfolderBase]: For 20825/20871 co-relation queries the response was YES. [2024-06-27 17:32:52,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54878 conditions, 19290 events. 12883/19290 cut-off events. For 20825/20871 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 133985 event pairs, 1520 based on Foata normal form. 74/19237 useless extension candidates. Maximal degree in co-relation 44514. Up to 13221 conditions per place. [2024-06-27 17:32:52,065 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 86 selfloop transitions, 12 changer transitions 20/131 dead transitions. [2024-06-27 17:32:52,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 785 flow [2024-06-27 17:32:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:32:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:32:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-06-27 17:32:52,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6533333333333333 [2024-06-27 17:32:52,067 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 312 flow. Second operand 6 states and 196 transitions. [2024-06-27 17:32:52,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 785 flow [2024-06-27 17:32:52,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 765 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 17:32:52,116 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 349 flow [2024-06-27 17:32:52,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-06-27 17:32:52,117 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-06-27 17:32:52,117 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 349 flow [2024-06-27 17:32:52,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 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) [2024-06-27 17:32:52,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:52,118 INFO L208 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, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:52,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 17:32:52,118 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:52,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash -221841110, now seen corresponding path program 2 times [2024-06-27 17:32:52,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:52,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260151233] [2024-06-27 17:32:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:32:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:52,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260151233] [2024-06-27 17:32:52,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260151233] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:32:52,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423684700] [2024-06-27 17:32:52,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:32:52,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:52,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:52,342 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) [2024-06-27 17:32:52,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 17:32:52,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:32:52,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:32:52,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 17:32:52,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:32:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:32:52,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:32:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:32:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423684700] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:32:52,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:32:52,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2024-06-27 17:32:52,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983151110] [2024-06-27 17:32:52,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:32:52,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:32:52,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:32:52,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:32:52,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 17:32:52,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 349 flow. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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) [2024-06-27 17:32:52,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:52,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 17:32:52,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:56,002 INFO L124 PetriNetUnfolderBase]: 24701/34863 cut-off events. [2024-06-27 17:32:56,002 INFO L125 PetriNetUnfolderBase]: For 40359/40839 co-relation queries the response was YES. [2024-06-27 17:32:56,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103487 conditions, 34863 events. 24701/34863 cut-off events. For 40359/40839 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 244741 event pairs, 1163 based on Foata normal form. 472/33747 useless extension candidates. Maximal degree in co-relation 82969. Up to 4858 conditions per place. [2024-06-27 17:32:56,201 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 274 selfloop transitions, 64 changer transitions 7/358 dead transitions. [2024-06-27 17:32:56,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 358 transitions, 2397 flow [2024-06-27 17:32:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 17:32:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 17:32:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 529 transitions. [2024-06-27 17:32:56,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568421052631579 [2024-06-27 17:32:56,203 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 349 flow. Second operand 19 states and 529 transitions. [2024-06-27 17:32:56,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 358 transitions, 2397 flow [2024-06-27 17:32:56,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 358 transitions, 2344 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 17:32:56,289 INFO L231 Difference]: Finished difference. Result has 106 places, 124 transitions, 817 flow [2024-06-27 17:32:56,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=817, PETRI_PLACES=106, PETRI_TRANSITIONS=124} [2024-06-27 17:32:56,290 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-06-27 17:32:56,290 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 124 transitions, 817 flow [2024-06-27 17:32:56,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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) [2024-06-27 17:32:56,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:56,291 INFO L208 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, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:56,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 17:32:56,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:56,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:32:56,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:56,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1491161504, now seen corresponding path program 3 times [2024-06-27 17:32:56,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:56,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721566159] [2024-06-27 17:32:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:56,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:56,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721566159] [2024-06-27 17:32:56,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721566159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:56,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:56,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:32:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404683886] [2024-06-27 17:32:56,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:56,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:32:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:32:56,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:32:56,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 17:32:56,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 124 transitions, 817 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-06-27 17:32:56,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:56,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 17:32:56,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:33:00,709 INFO L124 PetriNetUnfolderBase]: 30081/45217 cut-off events. [2024-06-27 17:33:00,710 INFO L125 PetriNetUnfolderBase]: For 142057/143985 co-relation queries the response was YES. [2024-06-27 17:33:01,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163049 conditions, 45217 events. 30081/45217 cut-off events. For 142057/143985 co-relation queries the response was YES. Maximal size of possible extension queue 2134. Compared 345014 event pairs, 2288 based on Foata normal form. 1521/45340 useless extension candidates. Maximal degree in co-relation 128311. Up to 31549 conditions per place. [2024-06-27 17:33:01,214 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 126 selfloop transitions, 60 changer transitions 35/253 dead transitions. [2024-06-27 17:33:01,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 253 transitions, 2261 flow [2024-06-27 17:33:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:33:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:33:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-06-27 17:33:01,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-06-27 17:33:01,216 INFO L175 Difference]: Start difference. First operand has 106 places, 124 transitions, 817 flow. Second operand 7 states and 226 transitions. [2024-06-27 17:33:01,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 253 transitions, 2261 flow [2024-06-27 17:33:02,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 253 transitions, 2261 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 17:33:02,688 INFO L231 Difference]: Finished difference. Result has 117 places, 164 transitions, 1455 flow [2024-06-27 17:33:02,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1455, PETRI_PLACES=117, PETRI_TRANSITIONS=164} [2024-06-27 17:33:02,689 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-06-27 17:33:02,689 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 164 transitions, 1455 flow [2024-06-27 17:33:02,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-06-27 17:33:02,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:33:02,689 INFO L208 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, 1, 1, 1, 1, 1, 1] [2024-06-27 17:33:02,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 17:33:02,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:33:02,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:33:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash 138827782, now seen corresponding path program 4 times [2024-06-27 17:33:02,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:33:02,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130325601] [2024-06-27 17:33:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:33:02,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:33:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:33:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:33:02,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:33:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130325601] [2024-06-27 17:33:02,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130325601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:33:02,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:33:02,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:33:02,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099058248] [2024-06-27 17:33:02,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:33:02,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:33:02,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:33:02,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:33:02,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:33:02,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 17:33:02,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 164 transitions, 1455 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-06-27 17:33:02,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:33:02,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 17:33:02,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:33:09,462 INFO L124 PetriNetUnfolderBase]: 33270/48562 cut-off events. [2024-06-27 17:33:09,463 INFO L125 PetriNetUnfolderBase]: For 189220/192560 co-relation queries the response was YES. [2024-06-27 17:33:09,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198435 conditions, 48562 events. 33270/48562 cut-off events. For 189220/192560 co-relation queries the response was YES. Maximal size of possible extension queue 2284. Compared 352132 event pairs, 3360 based on Foata normal form. 2592/49594 useless extension candidates. Maximal degree in co-relation 154523. Up to 33405 conditions per place. [2024-06-27 17:33:09,914 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 176 selfloop transitions, 101 changer transitions 12/321 dead transitions. [2024-06-27 17:33:09,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 321 transitions, 3207 flow [2024-06-27 17:33:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:33:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:33:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-06-27 17:33:09,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6488888888888888 [2024-06-27 17:33:09,919 INFO L175 Difference]: Start difference. First operand has 117 places, 164 transitions, 1455 flow. Second operand 9 states and 292 transitions. [2024-06-27 17:33:09,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 321 transitions, 3207 flow [2024-06-27 17:33:11,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 321 transitions, 3092 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 17:33:11,736 INFO L231 Difference]: Finished difference. Result has 125 places, 202 transitions, 2210 flow [2024-06-27 17:33:11,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2210, PETRI_PLACES=125, PETRI_TRANSITIONS=202} [2024-06-27 17:33:11,737 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 73 predicate places. [2024-06-27 17:33:11,737 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 202 transitions, 2210 flow [2024-06-27 17:33:11,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-06-27 17:33:11,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:33:11,737 INFO L208 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, 1, 1, 1, 1, 1, 1] [2024-06-27 17:33:11,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 17:33:11,738 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:33:11,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:33:11,738 INFO L85 PathProgramCache]: Analyzing trace with hash 65662654, now seen corresponding path program 5 times [2024-06-27 17:33:11,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:33:11,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213043893] [2024-06-27 17:33:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:33:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:33:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:33:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:33:12,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:33:12,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213043893] [2024-06-27 17:33:12,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213043893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:33:12,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:33:12,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:33:12,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102132658] [2024-06-27 17:33:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:33:12,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:33:12,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:33:12,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:33:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:33:12,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 17:33:12,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 202 transitions, 2210 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-06-27 17:33:12,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:33:12,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 17:33:12,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand