./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme --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 aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:51:02,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:51:02,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:51:02,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:51:02,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:51:02,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:51:02,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:51:02,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:51:02,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:51:02,812 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:51:02,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:51:02,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:51:02,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:51:02,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:51:02,816 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:51:02,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:51:02,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:51:02,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:51:02,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:51:02,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:51:02,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:51:02,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:51:02,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:51:02,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:51:02,820 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:51:02,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:51:02,821 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:51:02,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:51:02,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:51:02,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:51:02,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:51:02,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:02,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:51:02,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:51:02,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:51:02,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:51:02,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:51:02,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:51:02,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:51:02,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:51:02,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:51:02,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:51:02,840 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_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 [2023-11-26 11:51:03,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:51:03,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:51:03,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:51:03,237 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:51:03,237 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:51:03,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-26 11:51:06,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:51:06,459 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:51:06,461 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-26 11:51:06,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/data/8f84bea1a/33482586324f408db93f6a3bbeb0430c/FLAGb88f62e11 [2023-11-26 11:51:06,496 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/data/8f84bea1a/33482586324f408db93f6a3bbeb0430c [2023-11-26 11:51:06,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:51:06,503 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:51:06,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:06,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:51:06,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:51:06,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:06,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee0b8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06, skipping insertion in model container [2023-11-26 11:51:06,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:06,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:51:06,812 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_07087cc8-f512-4e52-8295-a68e37ae55e2/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2023-11-26 11:51:06,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:06,838 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:51:06,887 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_07087cc8-f512-4e52-8295-a68e37ae55e2/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2023-11-26 11:51:06,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:06,912 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:51:06,917 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:51:06,923 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:51:06,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06 WrapperNode [2023-11-26 11:51:06,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:06,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:06,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:51:06,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:51:06,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:06,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:06,990 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 409 [2023-11-26 11:51:06,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:06,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:51:06,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:51:06,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:51:07,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,010 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,040 INFO L175 MemorySlicer]: Split 19 memory accesses to 8 slices as follows [2, 2, 2, 2, 2, 2, 2, 5]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1]. [2023-11-26 11:51:07,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,041 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:51:07,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:51:07,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:51:07,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:51:07,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (1/1) ... [2023-11-26 11:51:07,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:07,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:07,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:51:07,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07087cc8-f512-4e52-8295-a68e37ae55e2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:51:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:51:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:51:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:51:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:51:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:51:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:51:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:51:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:51:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:51:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:51:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:51:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:51:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:51:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:51:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:51:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:51:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:51:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:51:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:51:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:51:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:51:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:51:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:51:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:51:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-26 11:51:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-26 11:51:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:51:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:51:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:51:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:51:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:51:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:51:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:51:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:51:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-26 11:51:07,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-26 11:51:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-26 11:51:07,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-26 11:51:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:51:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:51:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:51:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:51:07,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:51:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:51:07,198 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:51:07,396 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:51:07,398 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:51:08,002 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:51:08,554 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:51:08,555 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-26 11:51:08,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:08 BoogieIcfgContainer [2023-11-26 11:51:08,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:51:08,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:51:08,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:51:08,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:51:08,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:51:06" (1/3) ... [2023-11-26 11:51:08,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abf7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:08, skipping insertion in model container [2023-11-26 11:51:08,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:06" (2/3) ... [2023-11-26 11:51:08,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abf7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:08, skipping insertion in model container [2023-11-26 11:51:08,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:08" (3/3) ... [2023-11-26 11:51:08,568 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-11-26 11:51:08,579 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:51:08,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:51:08,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:51:08,591 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:51:08,734 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-26 11:51:08,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 244 flow [2023-11-26 11:51:08,850 INFO L124 PetriNetUnfolderBase]: 13/71 cut-off events. [2023-11-26 11:51:08,850 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:51:08,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 71 events. 13/71 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2023-11-26 11:51:08,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 244 flow [2023-11-26 11:51:08,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 70 transitions, 188 flow [2023-11-26 11:51:08,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:51:08,883 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;@2e531f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:51:08,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-26 11:51:08,924 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:51:08,924 INFO L124 PetriNetUnfolderBase]: 13/69 cut-off events. [2023-11-26 11:51:08,925 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:51:08,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:08,925 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] [2023-11-26 11:51:08,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-26 11:51:08,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:08,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1897803774, now seen corresponding path program 1 times [2023-11-26 11:51:08,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:08,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134851722] [2023-11-26 11:51:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:08,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:09,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:09,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134851722] [2023-11-26 11:51:09,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134851722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:09,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:09,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092641731] [2023-11-26 11:51:09,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:09,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:51:09,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:09,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:51:09,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:51:09,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-26 11:51:09,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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) [2023-11-26 11:51:09,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:09,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-26 11:51:09,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:23,417 INFO L124 PetriNetUnfolderBase]: 98509/124778 cut-off events. [2023-11-26 11:51:23,418 INFO L125 PetriNetUnfolderBase]: For 9775/9775 co-relation queries the response was YES. [2023-11-26 11:51:23,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255910 conditions, 124778 events. 98509/124778 cut-off events. For 9775/9775 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 719254 event pairs, 72876 based on Foata normal form. 22461/120914 useless extension candidates. Maximal degree in co-relation 254244. Up to 119424 conditions per place. [2023-11-26 11:51:24,500 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 57 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2023-11-26 11:51:24,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 294 flow [2023-11-26 11:51:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:51:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:51:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 91 transitions. [2023-11-26 11:51:24,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489247311827957 [2023-11-26 11:51:24,515 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 91 transitions. [2023-11-26 11:51:24,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 91 transitions. [2023-11-26 11:51:24,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:24,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 91 transitions. [2023-11-26 11:51:24,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 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) [2023-11-26 11:51:24,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-11-26 11:51:24,532 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-11-26 11:51:24,535 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 188 flow. Second operand 2 states and 91 transitions. [2023-11-26 11:51:24,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 294 flow [2023-11-26 11:51:24,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-26 11:51:24,881 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 148 flow [2023-11-26 11:51:24,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2023-11-26 11:51:24,888 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -11 predicate places. [2023-11-26 11:51:24,889 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 148 flow [2023-11-26 11:51:24,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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) [2023-11-26 11:51:24,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:24,890 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] [2023-11-26 11:51:24,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:51:24,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-26 11:51:24,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash -931008466, now seen corresponding path program 1 times [2023-11-26 11:51:24,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:24,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264877748] [2023-11-26 11:51:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:24,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264877748] [2023-11-26 11:51:25,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264877748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:25,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:25,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:25,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799807574] [2023-11-26 11:51:25,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:25,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:25,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:25,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-26 11:51:25,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-11-26 11:51:25,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:25,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-26 11:51:25,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:41,428 INFO L124 PetriNetUnfolderBase]: 139941/178630 cut-off events. [2023-11-26 11:51:41,428 INFO L125 PetriNetUnfolderBase]: For 3195/3195 co-relation queries the response was YES. [2023-11-26 11:51:41,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354449 conditions, 178630 events. 139941/178630 cut-off events. For 3195/3195 co-relation queries the response was YES. Maximal size of possible extension queue 6905. Compared 1101931 event pairs, 107108 based on Foata normal form. 4214/144976 useless extension candidates. Maximal degree in co-relation 354446. Up to 119424 conditions per place. [2023-11-26 11:51:42,388 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 56 selfloop transitions, 2 changer transitions 44/111 dead transitions. [2023-11-26 11:51:42,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 456 flow [2023-11-26 11:51:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:42,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2023-11-26 11:51:42,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2023-11-26 11:51:42,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 165 transitions. [2023-11-26 11:51:42,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 165 transitions. [2023-11-26 11:51:42,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:42,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 165 transitions. [2023-11-26 11:51:42,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:42,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-26 11:51:42,401 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-26 11:51:42,402 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 148 flow. Second operand 4 states and 165 transitions. [2023-11-26 11:51:42,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 456 flow [2023-11-26 11:51:42,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:51:42,406 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 166 flow [2023-11-26 11:51:42,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2023-11-26 11:51:42,408 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2023-11-26 11:51:42,408 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 166 flow [2023-11-26 11:51:42,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-11-26 11:51:42,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:42,409 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] [2023-11-26 11:51:42,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:51:42,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-26 11:51:42,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:42,410 INFO L85 PathProgramCache]: Analyzing trace with hash -404799454, now seen corresponding path program 1 times [2023-11-26 11:51:42,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:42,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354817729] [2023-11-26 11:51:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:42,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:51:42,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:42,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354817729] [2023-11-26 11:51:42,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354817729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:42,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:42,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:51:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149358971] [2023-11-26 11:51:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:42,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:51:42,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:51:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:51:42,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-26 11:51:42,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2023-11-26 11:51:42,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:42,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-26 11:51:42,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand