./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/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_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:22,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:22,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:47:22,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:22,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:22,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:22,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:22,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:22,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:22,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:22,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:22,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:22,839 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:22,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:22,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:22,841 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:22,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:22,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:22,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:22,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:22,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:22,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:22,846 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:47:22,847 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:22,848 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:22,848 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:22,849 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:22,850 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:22,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:22,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:22,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:22,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:22,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:22,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:22,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:22,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:22,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:22,855 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:22,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:22,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:22,856 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:22,856 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_ab63deca-9999-4087-8432-be89dbcb3ac2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2023-11-19 07:47:23,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:23,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:23,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:23,208 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:23,208 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:23,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2023-11-19 07:47:26,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:26,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:26,742 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2023-11-19 07:47:26,752 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/data/6ef319561/3c8120720bd64f7bb735a218f71e5e03/FLAG58c1d1bef [2023-11-19 07:47:26,768 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/data/6ef319561/3c8120720bd64f7bb735a218f71e5e03 [2023-11-19 07:47:26,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:26,773 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:26,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:26,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:26,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:26,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:26" (1/1) ... [2023-11-19 07:47:26,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ed7fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26, skipping insertion in model container [2023-11-19 07:47:26,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:26" (1/1) ... [2023-11-19 07:47:26,826 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:27,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:27,060 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:27,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:27,093 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:27,094 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:27,102 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:27,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27 WrapperNode [2023-11-19 07:47:27,103 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:27,104 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:27,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:27,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:27,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,151 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2023-11-19 07:47:27,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:27,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:27,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:27,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:27,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,182 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:27,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:27,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:27,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:27,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (1/1) ... [2023-11-19 07:47:27,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:27,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:27,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:27,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:47:27,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:47:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:47:27,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:47:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:47:27,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:47:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:47:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:47:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:27,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:27,305 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 07:47:27,423 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:27,426 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:27,840 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:28,049 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:28,050 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:47:28,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:28 BoogieIcfgContainer [2023-11-19 07:47:28,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:28,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:28,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:28,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:28,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:26" (1/3) ... [2023-11-19 07:47:28,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b6e6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:28, skipping insertion in model container [2023-11-19 07:47:28,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:27" (2/3) ... [2023-11-19 07:47:28,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b6e6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:28, skipping insertion in model container [2023-11-19 07:47:28,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:28" (3/3) ... [2023-11-19 07:47:28,063 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2023-11-19 07:47:28,070 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:47:28,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:28,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:47:28,080 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:47:28,162 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:47:28,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 132 transitions, 285 flow [2023-11-19 07:47:28,272 INFO L124 PetriNetUnfolderBase]: 7/129 cut-off events. [2023-11-19 07:47:28,272 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:47:28,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 7/129 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 179 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-11-19 07:47:28,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 132 transitions, 285 flow [2023-11-19 07:47:28,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 110 transitions, 232 flow [2023-11-19 07:47:28,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:28,301 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 110 transitions, 232 flow [2023-11-19 07:47:28,304 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 110 transitions, 232 flow [2023-11-19 07:47:28,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 110 transitions, 232 flow [2023-11-19 07:47:28,370 INFO L124 PetriNetUnfolderBase]: 7/110 cut-off events. [2023-11-19 07:47:28,371 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:47:28,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 110 events. 7/110 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 181 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-11-19 07:47:28,376 INFO L119 LiptonReduction]: Number of co-enabled transitions 2716 [2023-11-19 07:47:33,743 INFO L134 LiptonReduction]: Checked pairs total: 3693 [2023-11-19 07:47:33,743 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-11-19 07:47:33,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:33,782 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;@4b8ac8c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:33,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-19 07:47:33,789 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:33,789 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:47:33,789 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:33,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:33,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:47:33,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:33,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:33,797 INFO L85 PathProgramCache]: Analyzing trace with hash 19247712, now seen corresponding path program 1 times [2023-11-19 07:47:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:33,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366468534] [2023-11-19 07:47:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:34,243 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 07:47:34,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:34,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366468534] [2023-11-19 07:47:34,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366468534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:34,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:34,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033056270] [2023-11-19 07:47:34,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:34,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:34,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:34,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:34,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 245 [2023-11-19 07:47:34,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 07:47:34,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:34,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 245 [2023-11-19 07:47:34,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:34,956 INFO L124 PetriNetUnfolderBase]: 1932/3041 cut-off events. [2023-11-19 07:47:34,956 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2023-11-19 07:47:34,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6386 conditions, 3041 events. 1932/3041 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 17851 event pairs, 635 based on Foata normal form. 0/1557 useless extension candidates. Maximal degree in co-relation 5907. Up to 1939 conditions per place. [2023-11-19 07:47:34,996 INFO L140 encePairwiseOnDemand]: 236/245 looper letters, 50 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-19 07:47:34,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 233 flow [2023-11-19 07:47:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2023-11-19 07:47:35,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49115646258503404 [2023-11-19 07:47:35,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2023-11-19 07:47:35,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2023-11-19 07:47:35,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:35,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2023-11-19 07:47:35,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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 07:47:35,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:35,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:35,044 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 80 flow. Second operand 3 states and 361 transitions. [2023-11-19 07:47:35,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 233 flow [2023-11-19 07:47:35,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 223 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:47:35,058 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 90 flow [2023-11-19 07:47:35,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-11-19 07:47:35,065 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-19 07:47:35,065 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 90 flow [2023-11-19 07:47:35,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 07:47:35,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:35,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:47:35,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:35,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:35,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash 19247705, now seen corresponding path program 1 times [2023-11-19 07:47:35,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:35,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818934221] [2023-11-19 07:47:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:35,218 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 07:47:35,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:35,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818934221] [2023-11-19 07:47:35,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818934221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:35,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:35,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:35,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714936992] [2023-11-19 07:47:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:35,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:35,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:35,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:35,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 245 [2023-11-19 07:47:35,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 07:47:35,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:35,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 245 [2023-11-19 07:47:35,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:35,732 INFO L124 PetriNetUnfolderBase]: 2061/3138 cut-off events. [2023-11-19 07:47:35,732 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-11-19 07:47:35,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7072 conditions, 3138 events. 2061/3138 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 18278 event pairs, 567 based on Foata normal form. 0/1718 useless extension candidates. Maximal degree in co-relation 5804. Up to 2879 conditions per place. [2023-11-19 07:47:35,766 INFO L140 encePairwiseOnDemand]: 233/245 looper letters, 42 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-19 07:47:35,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 228 flow [2023-11-19 07:47:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-11-19 07:47:35,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48027210884353744 [2023-11-19 07:47:35,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-11-19 07:47:35,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-11-19 07:47:35,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:35,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-11-19 07:47:35,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 07:47:35,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:35,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:35,784 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 90 flow. Second operand 3 states and 353 transitions. [2023-11-19 07:47:35,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 228 flow [2023-11-19 07:47:35,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:35,790 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 140 flow [2023-11-19 07:47:35,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-19 07:47:35,797 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-11-19 07:47:35,797 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 140 flow [2023-11-19 07:47:35,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 07:47:35,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:35,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:47:35,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:35,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:35,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1317199460, now seen corresponding path program 1 times [2023-11-19 07:47:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:35,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196694817] [2023-11-19 07:47:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:36,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:36,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196694817] [2023-11-19 07:47:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196694817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:36,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142809830] [2023-11-19 07:47:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:36,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:36,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:36,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:36,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:36,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:36,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:36,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:36,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142809830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:36,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:36,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-19 07:47:36,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292985683] [2023-11-19 07:47:36,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:36,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:36,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-11-19 07:47:36,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 140 flow. Second operand has 8 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 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 07:47:36,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:36,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-11-19 07:47:36,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:37,957 INFO L124 PetriNetUnfolderBase]: 4947/7706 cut-off events. [2023-11-19 07:47:37,958 INFO L125 PetriNetUnfolderBase]: For 860/860 co-relation queries the response was YES. [2023-11-19 07:47:37,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19968 conditions, 7706 events. 4947/7706 cut-off events. For 860/860 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 47825 event pairs, 423 based on Foata normal form. 0/4748 useless extension candidates. Maximal degree in co-relation 18226. Up to 2679 conditions per place. [2023-11-19 07:47:38,035 INFO L140 encePairwiseOnDemand]: 230/245 looper letters, 150 selfloop transitions, 33 changer transitions 0/185 dead transitions. [2023-11-19 07:47:38,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 185 transitions, 982 flow [2023-11-19 07:47:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:47:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1072 transitions. [2023-11-19 07:47:38,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48616780045351476 [2023-11-19 07:47:38,041 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1072 transitions. [2023-11-19 07:47:38,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1072 transitions. [2023-11-19 07:47:38,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:38,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1072 transitions. [2023-11-19 07:47:38,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 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 07:47:38,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 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 07:47:38,053 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 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 07:47:38,054 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 140 flow. Second operand 9 states and 1072 transitions. [2023-11-19 07:47:38,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 185 transitions, 982 flow [2023-11-19 07:47:38,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 185 transitions, 976 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:38,060 INFO L231 Difference]: Finished difference. Result has 53 places, 63 transitions, 401 flow [2023-11-19 07:47:38,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=401, PETRI_PLACES=53, PETRI_TRANSITIONS=63} [2023-11-19 07:47:38,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-11-19 07:47:38,062 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 63 transitions, 401 flow [2023-11-19 07:47:38,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 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 07:47:38,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:38,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:47:38,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:38,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:47:38,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:38,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:38,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1317199468, now seen corresponding path program 1 times [2023-11-19 07:47:38,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:38,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270779868] [2023-11-19 07:47:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:38,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:38,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270779868] [2023-11-19 07:47:38,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270779868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:38,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769449384] [2023-11-19 07:47:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:38,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:38,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:38,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:38,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:38,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:38,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:38,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:38,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769449384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:38,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:38,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-19 07:47:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392441939] [2023-11-19 07:47:38,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:38,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:38,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:38,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:38,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:38,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 245 [2023-11-19 07:47:38,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 63 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 07:47:38,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:38,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 245 [2023-11-19 07:47:38,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:39,369 INFO L124 PetriNetUnfolderBase]: 2949/4507 cut-off events. [2023-11-19 07:47:39,370 INFO L125 PetriNetUnfolderBase]: For 8333/8389 co-relation queries the response was YES. [2023-11-19 07:47:39,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14301 conditions, 4507 events. 2949/4507 cut-off events. For 8333/8389 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 26637 event pairs, 2335 based on Foata normal form. 499/4485 useless extension candidates. Maximal degree in co-relation 9974. Up to 4400 conditions per place. [2023-11-19 07:47:39,411 INFO L140 encePairwiseOnDemand]: 240/245 looper letters, 44 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-19 07:47:39,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 360 flow [2023-11-19 07:47:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-11-19 07:47:39,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2023-11-19 07:47:39,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-11-19 07:47:39,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-11-19 07:47:39,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:39,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-11-19 07:47:39,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 07:47:39,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:39,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:39,420 INFO L175 Difference]: Start difference. First operand has 53 places, 63 transitions, 401 flow. Second operand 3 states and 330 transitions. [2023-11-19 07:47:39,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 360 flow [2023-11-19 07:47:39,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 343 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:47:39,443 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 255 flow [2023-11-19 07:47:39,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-11-19 07:47:39,445 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-19 07:47:39,445 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 255 flow [2023-11-19 07:47:39,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 07:47:39,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:39,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:47:39,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:39,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:39,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:39,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1317199467, now seen corresponding path program 1 times [2023-11-19 07:47:39,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:39,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943061997] [2023-11-19 07:47:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:39,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943061997] [2023-11-19 07:47:39,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943061997] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:39,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381646174] [2023-11-19 07:47:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:39,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:39,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:39,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:39,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:39,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:39,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:39,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:40,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381646174] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:40,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:40,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-19 07:47:40,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462446085] [2023-11-19 07:47:40,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:40,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:40,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:40,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:40,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:40,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-11-19 07:47:40,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 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 07:47:40,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:40,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-11-19 07:47:40,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:41,908 INFO L124 PetriNetUnfolderBase]: 6443/10034 cut-off events. [2023-11-19 07:47:41,908 INFO L125 PetriNetUnfolderBase]: For 13784/13784 co-relation queries the response was YES. [2023-11-19 07:47:41,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31799 conditions, 10034 events. 6443/10034 cut-off events. For 13784/13784 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 65054 event pairs, 375 based on Foata normal form. 710/9496 useless extension candidates. Maximal degree in co-relation 31785. Up to 3399 conditions per place. [2023-11-19 07:47:41,992 INFO L140 encePairwiseOnDemand]: 232/245 looper letters, 115 selfloop transitions, 72 changer transitions 0/189 dead transitions. [2023-11-19 07:47:41,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 189 transitions, 1305 flow [2023-11-19 07:47:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:47:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1041 transitions. [2023-11-19 07:47:41,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47210884353741495 [2023-11-19 07:47:41,997 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1041 transitions. [2023-11-19 07:47:41,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1041 transitions. [2023-11-19 07:47:41,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:41,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1041 transitions. [2023-11-19 07:47:42,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.66666666666667) internal successors, (1041), 9 states have internal predecessors, (1041), 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 07:47:42,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 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 07:47:42,009 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 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 07:47:42,010 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 255 flow. Second operand 9 states and 1041 transitions. [2023-11-19 07:47:42,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 189 transitions, 1305 flow [2023-11-19 07:47:42,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 189 transitions, 1304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:42,027 INFO L231 Difference]: Finished difference. Result has 62 places, 106 transitions, 1031 flow [2023-11-19 07:47:42,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1031, PETRI_PLACES=62, PETRI_TRANSITIONS=106} [2023-11-19 07:47:42,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-11-19 07:47:42,030 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 106 transitions, 1031 flow [2023-11-19 07:47:42,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 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 07:47:42,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:42,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:47:42,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:42,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:42,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:42,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:42,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1318231187, now seen corresponding path program 1 times [2023-11-19 07:47:42,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:42,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224052738] [2023-11-19 07:47:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:42,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:42,327 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 07:47:42,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:42,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224052738] [2023-11-19 07:47:42,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224052738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:42,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:42,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467916040] [2023-11-19 07:47:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:42,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:42,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:42,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:42,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 245 [2023-11-19 07:47:42,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 106 transitions, 1031 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 07:47:42,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:42,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 245 [2023-11-19 07:47:42,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:44,155 INFO L124 PetriNetUnfolderBase]: 6423/10030 cut-off events. [2023-11-19 07:47:44,155 INFO L125 PetriNetUnfolderBase]: For 43730/43730 co-relation queries the response was YES. [2023-11-19 07:47:44,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41859 conditions, 10030 events. 6423/10030 cut-off events. For 43730/43730 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 67833 event pairs, 1493 based on Foata normal form. 206/9415 useless extension candidates. Maximal degree in co-relation 41837. Up to 7647 conditions per place. [2023-11-19 07:47:44,265 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 131 selfloop transitions, 10 changer transitions 0/143 dead transitions. [2023-11-19 07:47:44,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 143 transitions, 1644 flow [2023-11-19 07:47:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-11-19 07:47:44,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47210884353741495 [2023-11-19 07:47:44,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-11-19 07:47:44,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-11-19 07:47:44,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:44,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-11-19 07:47:44,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 07:47:44,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:44,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:44,273 INFO L175 Difference]: Start difference. First operand has 62 places, 106 transitions, 1031 flow. Second operand 3 states and 347 transitions. [2023-11-19 07:47:44,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 143 transitions, 1644 flow [2023-11-19 07:47:44,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 143 transitions, 1553 flow, removed 44 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:44,464 INFO L231 Difference]: Finished difference. Result has 62 places, 105 transitions, 1035 flow [2023-11-19 07:47:44,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1035, PETRI_PLACES=62, PETRI_TRANSITIONS=105} [2023-11-19 07:47:44,466 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-11-19 07:47:44,466 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 105 transitions, 1035 flow [2023-11-19 07:47:44,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 07:47:44,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:44,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:44,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:47:44,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:44,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:44,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1202338823, now seen corresponding path program 1 times [2023-11-19 07:47:44,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:44,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148170751] [2023-11-19 07:47:44,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:44,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:44,570 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 07:47:44,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:44,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148170751] [2023-11-19 07:47:44,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148170751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:44,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:44,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:44,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314369375] [2023-11-19 07:47:44,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:44,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:44,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:44,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:44,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 245 [2023-11-19 07:47:44,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 105 transitions, 1035 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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 07:47:44,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:44,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 245 [2023-11-19 07:47:44,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:46,326 INFO L124 PetriNetUnfolderBase]: 6583/10464 cut-off events. [2023-11-19 07:47:46,327 INFO L125 PetriNetUnfolderBase]: For 42927/42927 co-relation queries the response was YES. [2023-11-19 07:47:46,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43812 conditions, 10464 events. 6583/10464 cut-off events. For 42927/42927 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 71608 event pairs, 609 based on Foata normal form. 100/9724 useless extension candidates. Maximal degree in co-relation 43789. Up to 8573 conditions per place. [2023-11-19 07:47:46,418 INFO L140 encePairwiseOnDemand]: 234/245 looper letters, 126 selfloop transitions, 24 changer transitions 0/152 dead transitions. [2023-11-19 07:47:46,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 152 transitions, 1660 flow [2023-11-19 07:47:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:47:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 460 transitions. [2023-11-19 07:47:46,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2023-11-19 07:47:46,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 460 transitions. [2023-11-19 07:47:46,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 460 transitions. [2023-11-19 07:47:46,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:46,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 460 transitions. [2023-11-19 07:47:46,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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 07:47:46,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 07:47:46,427 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 07:47:46,427 INFO L175 Difference]: Start difference. First operand has 62 places, 105 transitions, 1035 flow. Second operand 4 states and 460 transitions. [2023-11-19 07:47:46,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 152 transitions, 1660 flow [2023-11-19 07:47:46,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 152 transitions, 1649 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:46,618 INFO L231 Difference]: Finished difference. Result has 66 places, 124 transitions, 1389 flow [2023-11-19 07:47:46,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1389, PETRI_PLACES=66, PETRI_TRANSITIONS=124} [2023-11-19 07:47:46,619 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-11-19 07:47:46,620 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 124 transitions, 1389 flow [2023-11-19 07:47:46,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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 07:47:46,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:46,620 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 07:47:46,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:47:46,621 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:46,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:46,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1186646157, now seen corresponding path program 1 times [2023-11-19 07:47:46,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:46,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697369533] [2023-11-19 07:47:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:46,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:46,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697369533] [2023-11-19 07:47:46,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697369533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:46,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:46,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:46,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556145622] [2023-11-19 07:47:46,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:46,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:46,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:46,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:46,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 245 [2023-11-19 07:47:46,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 124 transitions, 1389 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 07:47:46,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:46,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 245 [2023-11-19 07:47:46,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:48,327 INFO L124 PetriNetUnfolderBase]: 5951/9493 cut-off events. [2023-11-19 07:47:48,328 INFO L125 PetriNetUnfolderBase]: For 58598/58598 co-relation queries the response was YES. [2023-11-19 07:47:48,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42204 conditions, 9493 events. 5951/9493 cut-off events. For 58598/58598 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 66792 event pairs, 4015 based on Foata normal form. 436/9248 useless extension candidates. Maximal degree in co-relation 42178. Up to 9026 conditions per place. [2023-11-19 07:47:48,422 INFO L140 encePairwiseOnDemand]: 243/245 looper letters, 104 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2023-11-19 07:47:48,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 1401 flow [2023-11-19 07:47:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-11-19 07:47:48,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435374149659864 [2023-11-19 07:47:48,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-11-19 07:47:48,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-11-19 07:47:48,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:48,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-11-19 07:47:48,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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 07:47:48,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:48,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:48,430 INFO L175 Difference]: Start difference. First operand has 66 places, 124 transitions, 1389 flow. Second operand 3 states and 326 transitions. [2023-11-19 07:47:48,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 1401 flow [2023-11-19 07:47:48,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 107 transitions, 1329 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-19 07:47:48,764 INFO L231 Difference]: Finished difference. Result has 62 places, 107 transitions, 1121 flow [2023-11-19 07:47:48,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1121, PETRI_PLACES=62, PETRI_TRANSITIONS=107} [2023-11-19 07:47:48,768 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-11-19 07:47:48,768 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 107 transitions, 1121 flow [2023-11-19 07:47:48,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 07:47:48,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:48,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 07:47:48,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:47:48,772 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:48,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1186646158, now seen corresponding path program 1 times [2023-11-19 07:47:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:48,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814263953] [2023-11-19 07:47:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:48,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:48,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814263953] [2023-11-19 07:47:48,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814263953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:48,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156942670] [2023-11-19 07:47:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:48,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:48,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:48,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:48,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:49,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:47:49,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:49,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156942670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:49,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:49,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-19 07:47:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606508020] [2023-11-19 07:47:49,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:49,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:47:49,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:49,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:47:49,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:49,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-11-19 07:47:49,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 107 transitions, 1121 flow. Second operand has 9 states, 9 states have (on average 99.55555555555556) internal successors, (896), 9 states have internal predecessors, (896), 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 07:47:49,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:49,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-11-19 07:47:49,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:52,102 INFO L124 PetriNetUnfolderBase]: 6775/11302 cut-off events. [2023-11-19 07:47:52,102 INFO L125 PetriNetUnfolderBase]: For 61256/61256 co-relation queries the response was YES. [2023-11-19 07:47:52,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46274 conditions, 11302 events. 6775/11302 cut-off events. For 61256/61256 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 81791 event pairs, 257 based on Foata normal form. 726/11360 useless extension candidates. Maximal degree in co-relation 46249. Up to 5089 conditions per place. [2023-11-19 07:47:52,211 INFO L140 encePairwiseOnDemand]: 233/245 looper letters, 171 selfloop transitions, 114 changer transitions 0/287 dead transitions. [2023-11-19 07:47:52,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 287 transitions, 2887 flow [2023-11-19 07:47:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:47:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:47:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1366 transitions. [2023-11-19 07:47:52,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46462585034013604 [2023-11-19 07:47:52,219 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1366 transitions. [2023-11-19 07:47:52,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1366 transitions. [2023-11-19 07:47:52,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:52,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1366 transitions. [2023-11-19 07:47:52,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.83333333333333) internal successors, (1366), 12 states have internal predecessors, (1366), 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 07:47:52,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 245.0) internal successors, (3185), 13 states have internal predecessors, (3185), 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 07:47:52,236 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 245.0) internal successors, (3185), 13 states have internal predecessors, (3185), 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 07:47:52,236 INFO L175 Difference]: Start difference. First operand has 62 places, 107 transitions, 1121 flow. Second operand 12 states and 1366 transitions. [2023-11-19 07:47:52,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 287 transitions, 2887 flow [2023-11-19 07:47:52,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 287 transitions, 2886 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:52,356 INFO L231 Difference]: Finished difference. Result has 79 places, 180 transitions, 2504 flow [2023-11-19 07:47:52,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2504, PETRI_PLACES=79, PETRI_TRANSITIONS=180} [2023-11-19 07:47:52,358 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-11-19 07:47:52,358 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 180 transitions, 2504 flow [2023-11-19 07:47:52,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 99.55555555555556) internal successors, (896), 9 states have internal predecessors, (896), 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 07:47:52,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:52,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:52,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:52,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:52,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:52,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash -195142361, now seen corresponding path program 1 times [2023-11-19 07:47:52,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:52,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542337753] [2023-11-19 07:47:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:52,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:52,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542337753] [2023-11-19 07:47:52,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542337753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89189214] [2023-11-19 07:47:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:52,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:52,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:52,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:52,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:47:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:52,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:52,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:52,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:53,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89189214] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:53,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:53,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-19 07:47:53,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500752022] [2023-11-19 07:47:53,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:53,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:53,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:53,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:53,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:53,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-11-19 07:47:53,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 180 transitions, 2504 flow. Second operand has 8 states, 8 states have (on average 100.625) internal successors, (805), 8 states have internal predecessors, (805), 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 07:47:53,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:53,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-11-19 07:47:53,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:55,745 INFO L124 PetriNetUnfolderBase]: 9323/15676 cut-off events. [2023-11-19 07:47:55,746 INFO L125 PetriNetUnfolderBase]: For 164837/164837 co-relation queries the response was YES. [2023-11-19 07:47:55,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74826 conditions, 15676 events. 9323/15676 cut-off events. For 164837/164837 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 120928 event pairs, 471 based on Foata normal form. 944/16354 useless extension candidates. Maximal degree in co-relation 74793. Up to 4163 conditions per place. [2023-11-19 07:47:55,907 INFO L140 encePairwiseOnDemand]: 235/245 looper letters, 337 selfloop transitions, 107 changer transitions 0/446 dead transitions. [2023-11-19 07:47:55,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 446 transitions, 6574 flow [2023-11-19 07:47:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:47:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1022 transitions. [2023-11-19 07:47:55,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2023-11-19 07:47:55,912 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1022 transitions. [2023-11-19 07:47:55,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1022 transitions. [2023-11-19 07:47:55,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:55,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1022 transitions. [2023-11-19 07:47:55,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.55555555555556) internal successors, (1022), 9 states have internal predecessors, (1022), 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 07:47:55,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 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 07:47:55,928 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 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 07:47:55,928 INFO L175 Difference]: Start difference. First operand has 79 places, 180 transitions, 2504 flow. Second operand 9 states and 1022 transitions. [2023-11-19 07:47:55,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 446 transitions, 6574 flow [2023-11-19 07:47:56,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 446 transitions, 5848 flow, removed 242 selfloop flow, removed 6 redundant places. [2023-11-19 07:47:56,559 INFO L231 Difference]: Finished difference. Result has 85 places, 221 transitions, 3237 flow [2023-11-19 07:47:56,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3237, PETRI_PLACES=85, PETRI_TRANSITIONS=221} [2023-11-19 07:47:56,560 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2023-11-19 07:47:56,561 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 221 transitions, 3237 flow [2023-11-19 07:47:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 100.625) internal successors, (805), 8 states have internal predecessors, (805), 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 07:47:56,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:56,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:56,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:47:56,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:47:56,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1446791357, now seen corresponding path program 1 times [2023-11-19 07:47:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122697028] [2023-11-19 07:47:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:56,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:56,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122697028] [2023-11-19 07:47:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122697028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:56,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134950542] [2023-11-19 07:47:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:56,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:56,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:56,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:47:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:57,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:57,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:57,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:57,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134950542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:57,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:57,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 07:47:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772836962] [2023-11-19 07:47:57,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:57,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:57,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:57,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:57,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:57,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 245 [2023-11-19 07:47:57,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 221 transitions, 3237 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 07:47:57,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:57,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 245 [2023-11-19 07:47:57,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:59,586 INFO L124 PetriNetUnfolderBase]: 7893/13328 cut-off events. [2023-11-19 07:47:59,586 INFO L125 PetriNetUnfolderBase]: For 151342/151342 co-relation queries the response was YES. [2023-11-19 07:47:59,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62400 conditions, 13328 events. 7893/13328 cut-off events. For 151342/151342 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 103900 event pairs, 5635 based on Foata normal form. 894/14123 useless extension candidates. Maximal degree in co-relation 62365. Up to 12380 conditions per place. [2023-11-19 07:47:59,713 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 187 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2023-11-19 07:47:59,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 190 transitions, 3131 flow [2023-11-19 07:47:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-11-19 07:47:59,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2023-11-19 07:47:59,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-11-19 07:47:59,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-11-19 07:47:59,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:59,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-11-19 07:47:59,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 07:47:59,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:59,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 07:47:59,721 INFO L175 Difference]: Start difference. First operand has 85 places, 221 transitions, 3237 flow. Second operand 3 states and 325 transitions. [2023-11-19 07:47:59,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 190 transitions, 3131 flow [2023-11-19 07:48:00,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 190 transitions, 3061 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-11-19 07:48:00,212 INFO L231 Difference]: Finished difference. Result has 78 places, 190 transitions, 2687 flow [2023-11-19 07:48:00,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2687, PETRI_PLACES=78, PETRI_TRANSITIONS=190} [2023-11-19 07:48:00,213 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-11-19 07:48:00,213 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 190 transitions, 2687 flow [2023-11-19 07:48:00,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 07:48:00,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:00,214 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:00,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:00,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:00,414 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:48:00,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:00,415 INFO L85 PathProgramCache]: Analyzing trace with hash -333283989, now seen corresponding path program 1 times [2023-11-19 07:48:00,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:00,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457126113] [2023-11-19 07:48:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:00,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457126113] [2023-11-19 07:48:00,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457126113] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:00,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719995043] [2023-11-19 07:48:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:00,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:00,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:00,815 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:00,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:48:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:00,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:48:00,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:01,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:02,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719995043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:02,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:48:02,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-11-19 07:48:02,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280033378] [2023-11-19 07:48:02,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:02,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:48:02,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:02,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:48:02,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:48:02,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 245 [2023-11-19 07:48:02,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 190 transitions, 2687 flow. Second operand has 15 states, 15 states have (on average 97.86666666666666) internal successors, (1468), 15 states have internal predecessors, (1468), 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 07:48:02,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:02,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 245 [2023-11-19 07:48:02,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:07,649 INFO L124 PetriNetUnfolderBase]: 13595/22246 cut-off events. [2023-11-19 07:48:07,649 INFO L125 PetriNetUnfolderBase]: For 271334/271334 co-relation queries the response was YES. [2023-11-19 07:48:07,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108414 conditions, 22246 events. 13595/22246 cut-off events. For 271334/271334 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 172427 event pairs, 343 based on Foata normal form. 1200/23446 useless extension candidates. Maximal degree in co-relation 108381. Up to 5407 conditions per place. [2023-11-19 07:48:07,837 INFO L140 encePairwiseOnDemand]: 235/245 looper letters, 289 selfloop transitions, 264 changer transitions 0/555 dead transitions. [2023-11-19 07:48:07,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 555 transitions, 7169 flow [2023-11-19 07:48:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:48:07,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-19 07:48:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2529 transitions. [2023-11-19 07:48:07,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488021295474712 [2023-11-19 07:48:07,848 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2529 transitions. [2023-11-19 07:48:07,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2529 transitions. [2023-11-19 07:48:07,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:07,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2529 transitions. [2023-11-19 07:48:07,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 109.95652173913044) internal successors, (2529), 23 states have internal predecessors, (2529), 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 07:48:07,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 245.0) internal successors, (5880), 24 states have internal predecessors, (5880), 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 07:48:07,872 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 245.0) internal successors, (5880), 24 states have internal predecessors, (5880), 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 07:48:07,872 INFO L175 Difference]: Start difference. First operand has 78 places, 190 transitions, 2687 flow. Second operand 23 states and 2529 transitions. [2023-11-19 07:48:07,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 555 transitions, 7169 flow [2023-11-19 07:48:08,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 555 transitions, 7168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:08,410 INFO L231 Difference]: Finished difference. Result has 111 places, 355 transitions, 6344 flow [2023-11-19 07:48:08,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6344, PETRI_PLACES=111, PETRI_TRANSITIONS=355} [2023-11-19 07:48:08,412 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2023-11-19 07:48:08,412 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 355 transitions, 6344 flow [2023-11-19 07:48:08,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.86666666666666) internal successors, (1468), 15 states have internal predecessors, (1468), 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 07:48:08,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:08,413 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:08,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:08,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:08,613 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:48:08,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:08,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1355797086, now seen corresponding path program 1 times [2023-11-19 07:48:08,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:08,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556920742] [2023-11-19 07:48:08,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:08,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:08,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556920742] [2023-11-19 07:48:08,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556920742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181451751] [2023-11-19 07:48:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:08,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:08,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:08,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:08,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab63deca-9999-4087-8432-be89dbcb3ac2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:48:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:08,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:48:08,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:09,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:10,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181451751] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:10,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:48:10,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-11-19 07:48:10,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849649616] [2023-11-19 07:48:10,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:10,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:48:10,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:10,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:48:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:48:10,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 245 [2023-11-19 07:48:10,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 355 transitions, 6344 flow. Second operand has 13 states, 13 states have (on average 97.84615384615384) internal successors, (1272), 13 states have internal predecessors, (1272), 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 07:48:10,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:10,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 245 [2023-11-19 07:48:10,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand