./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:21:36,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:21:36,957 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:21:36,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:21:36,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:21:37,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:21:37,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:21:37,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:21:37,003 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:21:37,009 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:21:37,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:21:37,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:21:37,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:21:37,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:21:37,013 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:21:37,013 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:21:37,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:21:37,014 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:21:37,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:21:37,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:21:37,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:21:37,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:21:37,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:21:37,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:21:37,016 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:21:37,016 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:21:37,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:21:37,017 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:21:37,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:21:37,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:21:37,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:21:37,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:21:37,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:21:37,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:21:37,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:21:37,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:21:37,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:21:37,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:21:37,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:21:37,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:21:37,021 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:21:37,021 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:21:37,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:21:37,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab [2024-01-27 15:21:37,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:21:37,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:21:37,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:21:37,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:21:37,240 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:21:37,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2024-01-27 15:21:38,342 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:21:38,509 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:21:38,510 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2024-01-27 15:21:38,517 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46cd257e7/8c1fb8cc95414ca5bc9969ceb21af85e/FLAG757e67300 [2024-01-27 15:21:38,527 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46cd257e7/8c1fb8cc95414ca5bc9969ceb21af85e [2024-01-27 15:21:38,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:21:38,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:21:38,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:21:38,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:21:38,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:21:38,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e337459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38, skipping insertion in model container [2024-01-27 15:21:38,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:21:38,681 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c[3520,3533] [2024-01-27 15:21:38,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:21:38,696 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:21:38,720 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c[3520,3533] [2024-01-27 15:21:38,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:21:38,740 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:21:38,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38 WrapperNode [2024-01-27 15:21:38,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:21:38,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:21:38,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:21:38,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:21:38,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,803 INFO L138 Inliner]: procedures = 23, calls = 45, calls flagged for inlining = 17, calls inlined = 39, statements flattened = 363 [2024-01-27 15:21:38,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:21:38,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:21:38,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:21:38,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:21:38,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,852 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 15:21:38,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:21:38,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:21:38,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:21:38,896 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:21:38,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (1/1) ... [2024-01-27 15:21:38,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:21:38,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:21:38,929 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) [2024-01-27 15:21:38,947 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 [2024-01-27 15:21:38,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:21:38,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:21:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:21:38,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:21:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:21:38,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:21:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:21:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:21:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:21:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:21:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:21:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:21:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:21:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:21:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:21:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:21:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:21:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:21:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:21:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:21:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:21:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:21:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:21:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:21:38,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:21:38,990 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:21:39,153 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:21:39,155 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:21:39,540 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:21:39,540 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:21:39,951 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:21:39,951 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:21:39,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:21:39 BoogieIcfgContainer [2024-01-27 15:21:39,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:21:39,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:21:39,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:21:39,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:21:39,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:21:38" (1/3) ... [2024-01-27 15:21:39,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dab7a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:21:39, skipping insertion in model container [2024-01-27 15:21:39,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:38" (2/3) ... [2024-01-27 15:21:39,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dab7a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:21:39, skipping insertion in model container [2024-01-27 15:21:39,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:21:39" (3/3) ... [2024-01-27 15:21:39,960 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2024-01-27 15:21:39,967 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:21:39,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:21:39,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:21:39,975 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:21:40,047 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:21:40,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 27 transitions, 75 flow [2024-01-27 15:21:40,113 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2024-01-27 15:21:40,113 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:21:40,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 0/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-27 15:21:40,115 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 27 transitions, 75 flow [2024-01-27 15:21:40,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 23 transitions, 64 flow [2024-01-27 15:21:40,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:21:40,137 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;@4bed3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:21:40,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:21:40,153 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:21:40,153 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-01-27 15:21:40,153 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:21:40,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:21:40,154 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] [2024-01-27 15:21:40,154 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 1 more)] === [2024-01-27 15:21:40,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:21:40,158 INFO L85 PathProgramCache]: Analyzing trace with hash -638376441, now seen corresponding path program 1 times [2024-01-27 15:21:40,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:21:40,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330358675] [2024-01-27 15:21:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:21:40,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:21:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:21:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:21:42,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:21:42,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330358675] [2024-01-27 15:21:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330358675] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:21:42,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:21:42,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:21:42,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896256689] [2024-01-27 15:21:42,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:21:42,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:21:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:21:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:21:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:21:42,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:21:42,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:42,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:21:42,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:21:42,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:21:43,118 INFO L124 PetriNetUnfolderBase]: 202/379 cut-off events. [2024-01-27 15:21:43,119 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-01-27 15:21:43,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 379 events. 202/379 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1455 event pairs, 12 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 708. Up to 128 conditions per place. [2024-01-27 15:21:43,124 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 40 selfloop transitions, 6 changer transitions 10/60 dead transitions. [2024-01-27 15:21:43,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 60 transitions, 280 flow [2024-01-27 15:21:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:21:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:21:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-01-27 15:21:43,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-01-27 15:21:43,134 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 64 flow. Second operand 6 states and 99 transitions. [2024-01-27 15:21:43,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 60 transitions, 280 flow [2024-01-27 15:21:43,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 60 transitions, 248 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:21:43,139 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 85 flow [2024-01-27 15:21:43,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-01-27 15:21:43,142 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-01-27 15:21:43,142 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 85 flow [2024-01-27 15:21:43,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:43,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:21:43,143 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] [2024-01-27 15:21:43,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:21:43,143 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 1 more)] === [2024-01-27 15:21:43,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:21:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1631131833, now seen corresponding path program 2 times [2024-01-27 15:21:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:21:43,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759687399] [2024-01-27 15:21:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:21:43,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:21:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:21:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:21:44,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:21:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759687399] [2024-01-27 15:21:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759687399] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:21:44,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:21:44,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:21:44,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627813415] [2024-01-27 15:21:44,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:21:44,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:21:44,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:21:44,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:21:44,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:21:44,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:21:44,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:44,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:21:44,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:21:44,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:21:44,973 INFO L124 PetriNetUnfolderBase]: 222/421 cut-off events. [2024-01-27 15:21:44,973 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-01-27 15:21:44,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 421 events. 222/421 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1751 event pairs, 36 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 977. Up to 174 conditions per place. [2024-01-27 15:21:44,976 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 37 selfloop transitions, 6 changer transitions 14/61 dead transitions. [2024-01-27 15:21:44,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 286 flow [2024-01-27 15:21:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:21:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:21:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-01-27 15:21:44,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-01-27 15:21:44,978 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 85 flow. Second operand 6 states and 99 transitions. [2024-01-27 15:21:44,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 286 flow [2024-01-27 15:21:44,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 61 transitions, 282 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:21:44,980 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 96 flow [2024-01-27 15:21:44,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2024-01-27 15:21:44,980 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-01-27 15:21:44,981 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 96 flow [2024-01-27 15:21:44,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:44,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:21:44,981 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] [2024-01-27 15:21:44,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:21:44,981 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 1 more)] === [2024-01-27 15:21:44,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:21:44,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1938156565, now seen corresponding path program 3 times [2024-01-27 15:21:44,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:21:44,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490383567] [2024-01-27 15:21:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:21:44,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:21:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:21:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:21:46,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:21:46,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490383567] [2024-01-27 15:21:46,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490383567] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:21:46,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:21:46,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:21:46,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783890188] [2024-01-27 15:21:46,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:21:46,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:21:46,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:21:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:21:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:21:46,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:21:46,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:46,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:21:46,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:21:46,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:21:46,382 INFO L124 PetriNetUnfolderBase]: 220/432 cut-off events. [2024-01-27 15:21:46,382 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-01-27 15:21:46,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 432 events. 220/432 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1823 event pairs, 20 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 1056. Up to 222 conditions per place. [2024-01-27 15:21:46,385 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 35 selfloop transitions, 5 changer transitions 13/57 dead transitions. [2024-01-27 15:21:46,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 285 flow [2024-01-27 15:21:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:21:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:21:46,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-01-27 15:21:46,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-01-27 15:21:46,387 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 96 flow. Second operand 6 states and 96 transitions. [2024-01-27 15:21:46,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 285 flow [2024-01-27 15:21:46,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 261 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-27 15:21:46,389 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 96 flow [2024-01-27 15:21:46,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2024-01-27 15:21:46,390 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-01-27 15:21:46,390 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 96 flow [2024-01-27 15:21:46,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:46,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:21:46,390 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] [2024-01-27 15:21:46,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:21:46,391 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 1 more)] === [2024-01-27 15:21:46,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:21:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash -626748799, now seen corresponding path program 4 times [2024-01-27 15:21:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:21:46,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677713804] [2024-01-27 15:21:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:21:46,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:21:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:21:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:21:47,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:21:47,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677713804] [2024-01-27 15:21:47,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677713804] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:21:47,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:21:47,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:21:47,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576440480] [2024-01-27 15:21:47,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:21:47,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:21:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:21:47,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:21:47,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:21:47,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:21:47,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:47,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:21:47,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:21:47,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:21:47,846 INFO L124 PetriNetUnfolderBase]: 160/315 cut-off events. [2024-01-27 15:21:47,847 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-01-27 15:21:47,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 315 events. 160/315 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1194 event pairs, 10 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 774. Up to 108 conditions per place. [2024-01-27 15:21:47,848 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 35 selfloop transitions, 5 changer transitions 12/56 dead transitions. [2024-01-27 15:21:47,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 276 flow [2024-01-27 15:21:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:21:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:21:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-01-27 15:21:47,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-01-27 15:21:47,850 INFO L175 Difference]: Start difference. First operand has 42 places, 26 transitions, 96 flow. Second operand 6 states and 95 transitions. [2024-01-27 15:21:47,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 276 flow [2024-01-27 15:21:47,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 261 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-27 15:21:47,851 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 100 flow [2024-01-27 15:21:47,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2024-01-27 15:21:47,852 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-01-27 15:21:47,852 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 100 flow [2024-01-27 15:21:47,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:47,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:21:47,853 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] [2024-01-27 15:21:47,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:21:47,853 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 1 more)] === [2024-01-27 15:21:47,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:21:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1801567071, now seen corresponding path program 5 times [2024-01-27 15:21:47,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:21:47,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062061828] [2024-01-27 15:21:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:21:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:21:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:21:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:21:48,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:21:48,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062061828] [2024-01-27 15:21:48,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062061828] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:21:48,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:21:48,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:21:48,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116898219] [2024-01-27 15:21:48,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:21:48,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:21:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:21:48,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:21:48,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:21:48,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:21:48,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:48,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:21:48,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:21:48,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:21:49,083 INFO L124 PetriNetUnfolderBase]: 120/244 cut-off events. [2024-01-27 15:21:49,083 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-01-27 15:21:49,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 244 events. 120/244 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 846 event pairs, 24 based on Foata normal form. 1/244 useless extension candidates. Maximal degree in co-relation 630. Up to 126 conditions per place. [2024-01-27 15:21:49,084 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 22 selfloop transitions, 3 changer transitions 18/47 dead transitions. [2024-01-27 15:21:49,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 240 flow [2024-01-27 15:21:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:21:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:21:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-01-27 15:21:49,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-01-27 15:21:49,085 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 100 flow. Second operand 6 states and 86 transitions. [2024-01-27 15:21:49,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 240 flow [2024-01-27 15:21:49,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 235 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:21:49,086 INFO L231 Difference]: Finished difference. Result has 46 places, 23 transitions, 81 flow [2024-01-27 15:21:49,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2024-01-27 15:21:49,087 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2024-01-27 15:21:49,087 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 23 transitions, 81 flow [2024-01-27 15:21:49,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:49,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:21:49,087 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] [2024-01-27 15:21:49,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:21:49,088 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 1 more)] === [2024-01-27 15:21:49,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:21:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash -432646607, now seen corresponding path program 6 times [2024-01-27 15:21:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:21:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428962792] [2024-01-27 15:21:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:21:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:21:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:21:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:21:50,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:21:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428962792] [2024-01-27 15:21:50,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428962792] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:21:50,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:21:50,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:21:50,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824087822] [2024-01-27 15:21:50,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:21:50,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:21:50,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:21:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:21:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:21:50,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:21:50,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 23 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:50,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:21:50,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:21:50,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:21:50,519 INFO L124 PetriNetUnfolderBase]: 50/105 cut-off events. [2024-01-27 15:21:50,519 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-01-27 15:21:50,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 105 events. 50/105 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 228 event pairs, 0 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 280. Up to 67 conditions per place. [2024-01-27 15:21:50,521 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-01-27 15:21:50,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 29 transitions, 144 flow [2024-01-27 15:21:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:21:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:21:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-01-27 15:21:50,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-01-27 15:21:50,522 INFO L175 Difference]: Start difference. First operand has 46 places, 23 transitions, 81 flow. Second operand 6 states and 69 transitions. [2024-01-27 15:21:50,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 29 transitions, 144 flow [2024-01-27 15:21:50,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 127 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-01-27 15:21:50,524 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-01-27 15:21:50,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-01-27 15:21:50,527 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-01-27 15:21:50,527 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-01-27 15:21:50,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:21:50,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:21:50,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:21:50,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:21:50,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:21:50,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:21:50,533 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-01-27 15:21:50,535 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:21:50,535 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:21:50,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:21:50 BasicIcfg [2024-01-27 15:21:50,543 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:21:50,543 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:21:50,543 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:21:50,543 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:21:50,544 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:21:39" (3/4) ... [2024-01-27 15:21:50,545 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:21:50,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:21:50,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:21:50,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:21:50,552 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 105 nodes and edges [2024-01-27 15:21:50,552 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-01-27 15:21:50,552 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-01-27 15:21:50,552 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-01-27 15:21:50,627 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:21:50,627 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:21:50,627 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:21:50,628 INFO L158 Benchmark]: Toolchain (without parser) took 12098.09ms. Allocated memory was 142.6MB in the beginning and 847.2MB in the end (delta: 704.6MB). Free memory was 86.1MB in the beginning and 346.4MB in the end (delta: -260.3MB). Peak memory consumption was 446.1MB. Max. memory is 16.1GB. [2024-01-27 15:21:50,628 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:21:50,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.64ms. Allocated memory is still 142.6MB. Free memory was 86.1MB in the beginning and 73.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:21:50,629 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.58ms. Allocated memory is still 142.6MB. Free memory was 73.5MB in the beginning and 70.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:21:50,629 INFO L158 Benchmark]: Boogie Preprocessor took 87.06ms. Allocated memory is still 142.6MB. Free memory was 70.4MB in the beginning and 66.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:21:50,629 INFO L158 Benchmark]: RCFGBuilder took 1056.67ms. Allocated memory was 142.6MB in the beginning and 216.0MB in the end (delta: 73.4MB). Free memory was 66.9MB in the beginning and 165.7MB in the end (delta: -98.8MB). Peak memory consumption was 86.7MB. Max. memory is 16.1GB. [2024-01-27 15:21:50,629 INFO L158 Benchmark]: TraceAbstraction took 10588.30ms. Allocated memory was 216.0MB in the beginning and 847.2MB in the end (delta: 631.2MB). Free memory was 165.7MB in the beginning and 351.6MB in the end (delta: -185.9MB). Peak memory consumption was 445.3MB. Max. memory is 16.1GB. [2024-01-27 15:21:50,629 INFO L158 Benchmark]: Witness Printer took 84.45ms. Allocated memory is still 847.2MB. Free memory was 351.6MB in the beginning and 346.4MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-01-27 15:21:50,631 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.64ms. Allocated memory is still 142.6MB. Free memory was 86.1MB in the beginning and 73.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.58ms. Allocated memory is still 142.6MB. Free memory was 73.5MB in the beginning and 70.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.06ms. Allocated memory is still 142.6MB. Free memory was 70.4MB in the beginning and 66.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1056.67ms. Allocated memory was 142.6MB in the beginning and 216.0MB in the end (delta: 73.4MB). Free memory was 66.9MB in the beginning and 165.7MB in the end (delta: -98.8MB). Peak memory consumption was 86.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10588.30ms. Allocated memory was 216.0MB in the beginning and 847.2MB in the end (delta: 631.2MB). Free memory was 165.7MB in the beginning and 351.6MB in the end (delta: -185.9MB). Peak memory consumption was 445.3MB. Max. memory is 16.1GB. * Witness Printer took 84.45ms. Allocated memory is still 847.2MB. Free memory was 351.6MB in the beginning and 346.4MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 100]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 43 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 584 IncrementalHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 584 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 4092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:21:50,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE