./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu --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 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:01,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:01,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:56:01,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:01,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:01,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:01,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:01,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:01,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:01,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:01,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:01,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:01,815 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:01,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:01,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:01,818 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:01,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:01,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:01,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:01,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:01,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:01,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:01,822 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:01,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:01,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:01,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:01,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:01,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:01,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:01,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:01,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:01,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:01,829 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:01,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:01,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:01,830 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:01,830 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:01,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:01,831 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:01,831 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2023-11-19 07:56:02,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:02,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:02,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:02,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:02,230 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:02,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-19 07:56:05,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:05,596 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:05,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-19 07:56:05,608 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/data/12788283a/69729dfa080e4fb4b4fd89ab97bc9566/FLAGa181010ed [2023-11-19 07:56:05,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/data/12788283a/69729dfa080e4fb4b4fd89ab97bc9566 [2023-11-19 07:56:05,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:05,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:05,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:05,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:05,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:05,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:05" (1/1) ... [2023-11-19 07:56:05,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcdecb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:05, skipping insertion in model container [2023-11-19 07:56:05,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:05" (1/1) ... [2023-11-19 07:56:05,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:06,011 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4800,4813] [2023-11-19 07:56:06,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:06,033 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:06,101 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4800,4813] [2023-11-19 07:56:06,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:06,115 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:06,115 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:06,123 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:06,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06 WrapperNode [2023-11-19 07:56:06,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:06,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:06,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:06,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:06,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,184 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 270 [2023-11-19 07:56:06,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:06,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:06,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:06,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:06,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:06,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:06,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:06,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:06,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (1/1) ... [2023-11-19 07:56:06,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:06,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:06,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:06,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce7bf00-22d4-4141-83fe-b310e0581833/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:06,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:56:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:56:06,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:56:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:56:06,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:56:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:56:06,323 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:56:06,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:56:06,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:06,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-19 07:56:06,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-19 07:56:06,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-19 07:56:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-19 07:56:06,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:56:06,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:56:06,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:06,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:06,330 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:56:06,542 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:06,547 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:06,954 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:07,034 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:07,034 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:56:07,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:07 BoogieIcfgContainer [2023-11-19 07:56:07,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:07,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:07,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:07,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:07,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:05" (1/3) ... [2023-11-19 07:56:07,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af6f3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:07, skipping insertion in model container [2023-11-19 07:56:07,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06" (2/3) ... [2023-11-19 07:56:07,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af6f3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:07, skipping insertion in model container [2023-11-19 07:56:07,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:07" (3/3) ... [2023-11-19 07:56:07,059 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-11-19 07:56:07,067 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:56:07,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:07,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:56:07,077 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:07,284 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-19 07:56:07,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 249 transitions, 564 flow [2023-11-19 07:56:07,493 INFO L124 PetriNetUnfolderBase]: 8/221 cut-off events. [2023-11-19 07:56:07,494 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:07,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 221 events. 8/221 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 260 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2023-11-19 07:56:07,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 249 transitions, 564 flow [2023-11-19 07:56:07,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 212 transitions, 472 flow [2023-11-19 07:56:07,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:07,539 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 212 transitions, 472 flow [2023-11-19 07:56:07,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 212 transitions, 472 flow [2023-11-19 07:56:07,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 212 transitions, 472 flow [2023-11-19 07:56:07,632 INFO L124 PetriNetUnfolderBase]: 8/212 cut-off events. [2023-11-19 07:56:07,632 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:07,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 212 events. 8/212 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 258 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2023-11-19 07:56:07,641 INFO L119 LiptonReduction]: Number of co-enabled transitions 8600 [2023-11-19 07:56:13,222 INFO L134 LiptonReduction]: Checked pairs total: 52354 [2023-11-19 07:56:13,222 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-11-19 07:56:13,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:13,264 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;@832283d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:13,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 07:56:13,304 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:13,304 INFO L124 PetriNetUnfolderBase]: 4/74 cut-off events. [2023-11-19 07:56:13,304 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:13,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:13,305 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, 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] [2023-11-19 07:56:13,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:56:13,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash -245079987, now seen corresponding path program 1 times [2023-11-19 07:56:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:13,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933673588] [2023-11-19 07:56:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:13,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:15,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:15,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933673588] [2023-11-19 07:56:15,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933673588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:15,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:15,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-19 07:56:15,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820504813] [2023-11-19 07:56:15,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:15,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:56:15,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:56:15,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:56:16,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 404 [2023-11-19 07:56:16,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 198 flow. Second operand has 19 states, 19 states have (on average 191.68421052631578) internal successors, (3642), 19 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:16,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:16,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 404 [2023-11-19 07:56:16,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:31,257 INFO L124 PetriNetUnfolderBase]: 81506/111204 cut-off events. [2023-11-19 07:56:31,258 INFO L125 PetriNetUnfolderBase]: For 11746/11940 co-relation queries the response was YES. [2023-11-19 07:56:31,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228673 conditions, 111204 events. 81506/111204 cut-off events. For 11746/11940 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 700305 event pairs, 27465 based on Foata normal form. 1/107753 useless extension candidates. Maximal degree in co-relation 227232. Up to 87940 conditions per place. [2023-11-19 07:56:32,002 INFO L140 encePairwiseOnDemand]: 385/404 looper letters, 310 selfloop transitions, 86 changer transitions 55/471 dead transitions. [2023-11-19 07:56:32,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 471 transitions, 2153 flow [2023-11-19 07:56:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 07:56:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-19 07:56:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5744 transitions. [2023-11-19 07:56:32,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5077793493635078 [2023-11-19 07:56:32,039 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5744 transitions. [2023-11-19 07:56:32,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5744 transitions. [2023-11-19 07:56:32,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:32,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5744 transitions. [2023-11-19 07:56:32,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 205.14285714285714) internal successors, (5744), 28 states have internal predecessors, (5744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:32,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 404.0) internal successors, (11716), 29 states have internal predecessors, (11716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:32,112 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 404.0) internal successors, (11716), 29 states have internal predecessors, (11716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:32,114 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 198 flow. Second operand 28 states and 5744 transitions. [2023-11-19 07:56:32,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 471 transitions, 2153 flow [2023-11-19 07:56:33,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 471 transitions, 1947 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-19 07:56:33,026 INFO L231 Difference]: Finished difference. Result has 121 places, 160 transitions, 646 flow [2023-11-19 07:56:33,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=646, PETRI_PLACES=121, PETRI_TRANSITIONS=160} [2023-11-19 07:56:33,033 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 31 predicate places. [2023-11-19 07:56:33,033 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 160 transitions, 646 flow [2023-11-19 07:56:33,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 191.68421052631578) internal successors, (3642), 19 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:33,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:33,036 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, 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] [2023-11-19 07:56:33,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:33,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:56:33,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:33,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1332784663, now seen corresponding path program 2 times [2023-11-19 07:56:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:33,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395455403] [2023-11-19 07:56:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:33,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:33,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395455403] [2023-11-19 07:56:33,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395455403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:33,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:33,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004882609] [2023-11-19 07:56:33,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:33,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:33,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:33,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 404 [2023-11-19 07:56:33,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 160 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:33,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:33,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 404 [2023-11-19 07:56:33,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:39,212 INFO L124 PetriNetUnfolderBase]: 31843/48890 cut-off events. [2023-11-19 07:56:39,212 INFO L125 PetriNetUnfolderBase]: For 25041/25137 co-relation queries the response was YES. [2023-11-19 07:56:39,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116146 conditions, 48890 events. 31843/48890 cut-off events. For 25041/25137 co-relation queries the response was YES. Maximal size of possible extension queue 1403. Compared 364353 event pairs, 16099 based on Foata normal form. 966/46229 useless extension candidates. Maximal degree in co-relation 114208. Up to 23949 conditions per place. [2023-11-19 07:56:39,768 INFO L140 encePairwiseOnDemand]: 401/404 looper letters, 100 selfloop transitions, 6 changer transitions 0/185 dead transitions. [2023-11-19 07:56:39,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 185 transitions, 937 flow [2023-11-19 07:56:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2023-11-19 07:56:39,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5973597359735974 [2023-11-19 07:56:39,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2023-11-19 07:56:39,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2023-11-19 07:56:39,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:39,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2023-11-19 07:56:39,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:39,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:39,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:39,795 INFO L175 Difference]: Start difference. First operand has 121 places, 160 transitions, 646 flow. Second operand 3 states and 724 transitions. [2023-11-19 07:56:39,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 185 transitions, 937 flow [2023-11-19 07:56:40,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 185 transitions, 921 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-19 07:56:40,220 INFO L231 Difference]: Finished difference. Result has 114 places, 153 transitions, 617 flow [2023-11-19 07:56:40,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=617, PETRI_PLACES=114, PETRI_TRANSITIONS=153} [2023-11-19 07:56:40,221 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 24 predicate places. [2023-11-19 07:56:40,222 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 153 transitions, 617 flow [2023-11-19 07:56:40,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:40,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:40,223 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, 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] [2023-11-19 07:56:40,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:40,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:56:40,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1554059611, now seen corresponding path program 3 times [2023-11-19 07:56:40,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:40,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891788522] [2023-11-19 07:56:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:40,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:40,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:40,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891788522] [2023-11-19 07:56:40,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891788522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:40,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:40,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:40,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923690575] [2023-11-19 07:56:40,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:40,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:40,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:40,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:40,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:40,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 404 [2023-11-19 07:56:40,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 153 transitions, 617 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:40,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:40,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 404 [2023-11-19 07:56:40,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:45,260 INFO L124 PetriNetUnfolderBase]: 27708/43073 cut-off events. [2023-11-19 07:56:45,261 INFO L125 PetriNetUnfolderBase]: For 22046/22152 co-relation queries the response was YES. [2023-11-19 07:56:45,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102261 conditions, 43073 events. 27708/43073 cut-off events. For 22046/22152 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 321854 event pairs, 13557 based on Foata normal form. 914/41188 useless extension candidates. Maximal degree in co-relation 84522. Up to 18413 conditions per place. [2023-11-19 07:56:45,665 INFO L140 encePairwiseOnDemand]: 401/404 looper letters, 94 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2023-11-19 07:56:45,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 173 transitions, 878 flow [2023-11-19 07:56:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2023-11-19 07:56:45,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.599009900990099 [2023-11-19 07:56:45,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 726 transitions. [2023-11-19 07:56:45,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 726 transitions. [2023-11-19 07:56:45,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:45,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 726 transitions. [2023-11-19 07:56:45,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:45,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:45,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:45,679 INFO L175 Difference]: Start difference. First operand has 114 places, 153 transitions, 617 flow. Second operand 3 states and 726 transitions. [2023-11-19 07:56:45,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 173 transitions, 878 flow [2023-11-19 07:56:45,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 173 transitions, 859 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:56:45,880 INFO L231 Difference]: Finished difference. Result has 111 places, 140 transitions, 565 flow [2023-11-19 07:56:45,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=565, PETRI_PLACES=111, PETRI_TRANSITIONS=140} [2023-11-19 07:56:45,882 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 21 predicate places. [2023-11-19 07:56:45,882 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 140 transitions, 565 flow [2023-11-19 07:56:45,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:45,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:45,884 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, 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] [2023-11-19 07:56:45,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:45,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-19 07:56:45,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:45,885 INFO L85 PathProgramCache]: Analyzing trace with hash 465805097, now seen corresponding path program 4 times [2023-11-19 07:56:45,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:45,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526427914] [2023-11-19 07:56:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:45,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:46,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:46,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526427914] [2023-11-19 07:56:46,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526427914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:46,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:46,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39381045] [2023-11-19 07:56:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:46,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:46,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:46,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:46,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:46,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 404 [2023-11-19 07:56:46,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 140 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:46,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:46,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 404 [2023-11-19 07:56:46,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand