./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --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 c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:15:07,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:15:07,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:15:07,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:15:07,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:15:07,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:15:07,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:15:07,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:15:07,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:15:07,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:15:07,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:15:07,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:15:07,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:15:07,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:15:07,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:15:07,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:15:07,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:15:07,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:15:07,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:15:07,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:15:07,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:15:07,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:15:07,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:15:07,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:15:07,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:15:07,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:15:07,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:15:07,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:15:07,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:15:07,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:15:07,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:15:07,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:15:07,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:15:07,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:15:07,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:15:07,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:15:07,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:15:07,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:15:07,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:15:07,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:15:07,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:15:07,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:15:07,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:15:07,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:15:07,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:15:07,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:15:07,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:15:07,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:15:07,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:15:07,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:15:07,761 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:15:07,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:15:07,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:15:07,762 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:15:07,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:15:07,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:15:07,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:15:07,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:15:07,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:15:07,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:15:07,765 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:15:07,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:15:07,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:15:07,765 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:15:07,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:15:07,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:15:07,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:15:07,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:15:07,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:15:07,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:15:07,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:15:07,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:15:07,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:15:07,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:15:07,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:15:07,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:15:07,769 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:15:07,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:15:07,770 INFO L138 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_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-11-25 17:15:08,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:15:08,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:15:08,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:15:08,081 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:15:08,081 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:15:08,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-25 17:15:11,265 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:15:11,523 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:15:11,523 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-25 17:15:11,532 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/data/2fb941125/ce04dc8bd87e41579631b5db71ba34f3/FLAG638f02ec8 [2022-11-25 17:15:11,555 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/data/2fb941125/ce04dc8bd87e41579631b5db71ba34f3 [2022-11-25 17:15:11,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:15:11,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:15:11,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:15:11,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:15:11,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:15:11,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd7cfb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11, skipping insertion in model container [2022-11-25 17:15:11,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:15:11,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:15:11,784 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-25 17:15:11,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:15:11,803 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:15:11,828 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-25 17:15:11,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:15:11,848 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:15:11,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11 WrapperNode [2022-11-25 17:15:11,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:15:11,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:15:11,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:15:11,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:15:11,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,906 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 395 [2022-11-25 17:15:11,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:15:11,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:15:11,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:15:11,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:15:11,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:15:11,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:15:11,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:15:11,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:15:11,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (1/1) ... [2022-11-25 17:15:11,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:15:11,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:11,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:15:12,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:15:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:15:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:15:12,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:15:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:15:12,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:15:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:15:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:15:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:15:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:15:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:15:12,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:15:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:15:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:15:12,036 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:15:12,151 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:15:12,153 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:15:13,015 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:15:13,051 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:15:13,051 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 17:15:13,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:15:13 BoogieIcfgContainer [2022-11-25 17:15:13,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:15:13,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:15:13,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:15:13,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:15:13,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:15:11" (1/3) ... [2022-11-25 17:15:13,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8f2764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:15:13, skipping insertion in model container [2022-11-25 17:15:13,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:11" (2/3) ... [2022-11-25 17:15:13,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8f2764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:15:13, skipping insertion in model container [2022-11-25 17:15:13,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:15:13" (3/3) ... [2022-11-25 17:15:13,068 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-11-25 17:15:13,077 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:15:13,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:15:13,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-11-25 17:15:13,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:15:13,282 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:15:13,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 583 transitions, 1182 flow [2022-11-25 17:15:13,647 INFO L130 PetriNetUnfolder]: 44/581 cut-off events. [2022-11-25 17:15:13,647 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:15:13,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 581 events. 44/581 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1853 event pairs, 0 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2022-11-25 17:15:13,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 583 transitions, 1182 flow [2022-11-25 17:15:13,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 562 transitions, 1133 flow [2022-11-25 17:15:13,698 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:15:13,728 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 526 places, 562 transitions, 1133 flow [2022-11-25 17:15:13,733 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 526 places, 562 transitions, 1133 flow [2022-11-25 17:15:13,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 526 places, 562 transitions, 1133 flow [2022-11-25 17:15:13,902 INFO L130 PetriNetUnfolder]: 43/562 cut-off events. [2022-11-25 17:15:13,902 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:15:13,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 562 events. 43/562 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1754 event pairs, 0 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2022-11-25 17:15:13,994 INFO L119 LiptonReduction]: Number of co-enabled transitions 105228 [2022-11-25 17:16:12,705 INFO L134 LiptonReduction]: Checked pairs total: 101874 [2022-11-25 17:16:12,706 INFO L136 LiptonReduction]: Total number of compositions: 802 [2022-11-25 17:16:12,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:16:12,738 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=LoopsAndPotentialCycles, 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;@1c8d5a01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:16:12,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2022-11-25 17:16:12,743 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:16:12,743 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:16:12,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:12,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:16:12,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:12,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash 82451, now seen corresponding path program 1 times [2022-11-25 17:16:12,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:12,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337333055] [2022-11-25 17:16:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:12,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:13,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:13,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337333055] [2022-11-25 17:16:13,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337333055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:13,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:13,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:16:13,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669236932] [2022-11-25 17:16:13,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:13,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:13,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:13,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:13,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 1385 [2022-11-25 17:16:13,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 552.6666666666666) internal successors, (1658), 3 states have internal predecessors, (1658), 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) [2022-11-25 17:16:13,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:13,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 1385 [2022-11-25 17:16:13,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:14,358 INFO L130 PetriNetUnfolder]: 2101/3517 cut-off events. [2022-11-25 17:16:14,358 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-25 17:16:14,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7150 conditions, 3517 events. 2101/3517 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 22857 event pairs, 1884 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 3427. Up to 1758 conditions per place. [2022-11-25 17:16:14,410 INFO L137 encePairwiseOnDemand]: 1359/1385 looper letters, 91 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2022-11-25 17:16:14,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 94 transitions, 392 flow [2022-11-25 17:16:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1795 transitions. [2022-11-25 17:16:14,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43200962695547535 [2022-11-25 17:16:14,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1795 transitions. [2022-11-25 17:16:14,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1795 transitions. [2022-11-25 17:16:14,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:14,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1795 transitions. [2022-11-25 17:16:14,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 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) [2022-11-25 17:16:14,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:14,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:14,463 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 151 flow. Second operand 3 states and 1795 transitions. [2022-11-25 17:16:14,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 94 transitions, 392 flow [2022-11-25 17:16:14,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 94 transitions, 382 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:16:14,470 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 116 flow [2022-11-25 17:16:14,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2022-11-25 17:16:14,475 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, -22 predicate places. [2022-11-25 17:16:14,476 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 116 flow [2022-11-25 17:16:14,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.6666666666666) internal successors, (1658), 3 states have internal predecessors, (1658), 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) [2022-11-25 17:16:14,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:14,477 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:16:14,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:16:14,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2559475, now seen corresponding path program 1 times [2022-11-25 17:16:14,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:14,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387515221] [2022-11-25 17:16:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:14,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:14,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387515221] [2022-11-25 17:16:14,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387515221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:14,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286943552] [2022-11-25 17:16:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:14,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:14,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:14,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:14,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:16:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:14,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:16:14,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:14,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:14,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286943552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:16:14,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:16:14,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 17:16:14,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215212527] [2022-11-25 17:16:14,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:16:14,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:16:14,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:14,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:16:14,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:16:14,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 1385 [2022-11-25 17:16:14,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 553.1428571428571) internal successors, (3872), 7 states have internal predecessors, (3872), 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) [2022-11-25 17:16:14,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:14,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 1385 [2022-11-25 17:16:14,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:17,652 INFO L130 PetriNetUnfolder]: 5254/8791 cut-off events. [2022-11-25 17:16:17,653 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-11-25 17:16:17,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17798 conditions, 8791 events. 5254/8791 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 65328 event pairs, 4710 based on Foata normal form. 0/2826 useless extension candidates. Maximal degree in co-relation 14235. Up to 1757 conditions per place. [2022-11-25 17:16:17,703 INFO L137 encePairwiseOnDemand]: 1381/1385 looper letters, 222 selfloop transitions, 9 changer transitions 0/232 dead transitions. [2022-11-25 17:16:17,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 232 transitions, 970 flow [2022-11-25 17:16:17,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:16:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:16:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4098 transitions. [2022-11-25 17:16:17,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42269210933470863 [2022-11-25 17:16:17,713 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4098 transitions. [2022-11-25 17:16:17,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4098 transitions. [2022-11-25 17:16:17,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:17,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4098 transitions. [2022-11-25 17:16:17,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 585.4285714285714) internal successors, (4098), 7 states have internal predecessors, (4098), 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) [2022-11-25 17:16:17,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1385.0) internal successors, (11080), 8 states have internal predecessors, (11080), 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) [2022-11-25 17:16:17,745 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1385.0) internal successors, (11080), 8 states have internal predecessors, (11080), 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) [2022-11-25 17:16:17,745 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 116 flow. Second operand 7 states and 4098 transitions. [2022-11-25 17:16:17,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 232 transitions, 970 flow [2022-11-25 17:16:17,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 232 transitions, 968 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:17,752 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 173 flow [2022-11-25 17:16:17,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2022-11-25 17:16:17,753 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, -14 predicate places. [2022-11-25 17:16:17,753 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 173 flow [2022-11-25 17:16:17,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 553.1428571428571) internal successors, (3872), 7 states have internal predecessors, (3872), 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) [2022-11-25 17:16:17,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:17,755 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-11-25 17:16:17,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:17,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:17,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:17,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash 79347218, now seen corresponding path program 1 times [2022-11-25 17:16:17,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:17,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562461403] [2022-11-25 17:16:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:17,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:18,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:18,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562461403] [2022-11-25 17:16:18,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562461403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:18,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015283003] [2022-11-25 17:16:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:18,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:18,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:18,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:18,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:16:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:18,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:16:18,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:18,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:16:18,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015283003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:18,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:16:18,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 17:16:18,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098653604] [2022-11-25 17:16:18,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:18,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:16:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:16:18,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:16:18,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 1385 [2022-11-25 17:16:18,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 552.8) internal successors, (2764), 5 states have internal predecessors, (2764), 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) [2022-11-25 17:16:18,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:18,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 1385 [2022-11-25 17:16:18,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:20,926 INFO L130 PetriNetUnfolder]: 5251/8787 cut-off events. [2022-11-25 17:16:20,926 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-11-25 17:16:20,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17800 conditions, 8787 events. 5251/8787 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 65386 event pairs, 4710 based on Foata normal form. 2/2829 useless extension candidates. Maximal degree in co-relation 10670. Up to 5264 conditions per place. [2022-11-25 17:16:20,965 INFO L137 encePairwiseOnDemand]: 1382/1385 looper letters, 136 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2022-11-25 17:16:20,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 140 transitions, 608 flow [2022-11-25 17:16:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:16:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:16:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2899 transitions. [2022-11-25 17:16:20,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41862815884476534 [2022-11-25 17:16:20,973 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2899 transitions. [2022-11-25 17:16:20,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2899 transitions. [2022-11-25 17:16:20,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:20,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2899 transitions. [2022-11-25 17:16:20,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 579.8) internal successors, (2899), 5 states have internal predecessors, (2899), 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) [2022-11-25 17:16:20,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1385.0) internal successors, (8310), 6 states have internal predecessors, (8310), 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) [2022-11-25 17:16:20,998 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1385.0) internal successors, (8310), 6 states have internal predecessors, (8310), 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) [2022-11-25 17:16:20,998 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 173 flow. Second operand 5 states and 2899 transitions. [2022-11-25 17:16:20,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 140 transitions, 608 flow [2022-11-25 17:16:21,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 140 transitions, 600 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:21,001 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 144 flow [2022-11-25 17:16:21,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2022-11-25 17:16:21,002 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, -13 predicate places. [2022-11-25 17:16:21,003 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 144 flow [2022-11-25 17:16:21,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 552.8) internal successors, (2764), 5 states have internal predecessors, (2764), 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) [2022-11-25 17:16:21,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:21,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:16:21,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:21,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:21,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:21,210 INFO L85 PathProgramCache]: Analyzing trace with hash 79435905, now seen corresponding path program 1 times [2022-11-25 17:16:21,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:21,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80372213] [2022-11-25 17:16:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:21,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:21,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80372213] [2022-11-25 17:16:21,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80372213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:21,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:21,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:16:21,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128333505] [2022-11-25 17:16:21,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:21,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:16:21,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:21,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:16:21,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:16:21,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 1385 [2022-11-25 17:16:21,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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) [2022-11-25 17:16:21,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:21,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 1385 [2022-11-25 17:16:21,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:24,477 INFO L130 PetriNetUnfolder]: 7364/11821 cut-off events. [2022-11-25 17:16:24,477 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 17:16:24,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23753 conditions, 11821 events. 7364/11821 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 85733 event pairs, 1395 based on Foata normal form. 0/3701 useless extension candidates. Maximal degree in co-relation 22213. Up to 5193 conditions per place. [2022-11-25 17:16:24,587 INFO L137 encePairwiseOnDemand]: 1349/1385 looper letters, 88 selfloop transitions, 53 changer transitions 0/142 dead transitions. [2022-11-25 17:16:24,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 142 transitions, 614 flow [2022-11-25 17:16:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:16:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:16:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2781 transitions. [2022-11-25 17:16:24,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4015884476534296 [2022-11-25 17:16:24,597 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2781 transitions. [2022-11-25 17:16:24,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2781 transitions. [2022-11-25 17:16:24,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:24,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2781 transitions. [2022-11-25 17:16:24,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 556.2) internal successors, (2781), 5 states have internal predecessors, (2781), 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) [2022-11-25 17:16:24,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1385.0) internal successors, (8310), 6 states have internal predecessors, (8310), 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) [2022-11-25 17:16:24,619 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1385.0) internal successors, (8310), 6 states have internal predecessors, (8310), 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) [2022-11-25 17:16:24,620 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 144 flow. Second operand 5 states and 2781 transitions. [2022-11-25 17:16:24,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 142 transitions, 614 flow [2022-11-25 17:16:24,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 142 transitions, 609 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:16:24,623 INFO L231 Difference]: Finished difference. Result has 66 places, 103 transitions, 575 flow [2022-11-25 17:16:24,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=66, PETRI_TRANSITIONS=103} [2022-11-25 17:16:24,624 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2022-11-25 17:16:24,625 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 103 transitions, 575 flow [2022-11-25 17:16:24,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 526.0) internal successors, (2104), 4 states have internal predecessors, (2104), 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) [2022-11-25 17:16:24,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:24,626 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:16:24,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:16:24,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash 79435909, now seen corresponding path program 1 times [2022-11-25 17:16:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:24,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670215975] [2022-11-25 17:16:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:24,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:24,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670215975] [2022-11-25 17:16:24,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670215975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:24,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:24,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:16:24,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620969298] [2022-11-25 17:16:24,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:24,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:24,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:24,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:24,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:24,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1385 [2022-11-25 17:16:24,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 103 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 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) [2022-11-25 17:16:24,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:24,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1385 [2022-11-25 17:16:24,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:28,811 INFO L130 PetriNetUnfolder]: 11781/19034 cut-off events. [2022-11-25 17:16:28,811 INFO L131 PetriNetUnfolder]: For 3907/3907 co-relation queries the response was YES. [2022-11-25 17:16:28,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63484 conditions, 19034 events. 11781/19034 cut-off events. For 3907/3907 co-relation queries the response was YES. Maximal size of possible extension queue 1557. Compared 146910 event pairs, 3736 based on Foata normal form. 0/9894 useless extension candidates. Maximal degree in co-relation 61329. Up to 10534 conditions per place. [2022-11-25 17:16:28,908 INFO L137 encePairwiseOnDemand]: 1373/1385 looper letters, 160 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2022-11-25 17:16:28,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 176 transitions, 1326 flow [2022-11-25 17:16:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1742 transitions. [2022-11-25 17:16:28,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41925391095066183 [2022-11-25 17:16:28,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1742 transitions. [2022-11-25 17:16:28,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1742 transitions. [2022-11-25 17:16:28,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:28,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1742 transitions. [2022-11-25 17:16:28,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 580.6666666666666) internal successors, (1742), 3 states have internal predecessors, (1742), 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) [2022-11-25 17:16:28,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:28,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:28,927 INFO L175 Difference]: Start difference. First operand has 66 places, 103 transitions, 575 flow. Second operand 3 states and 1742 transitions. [2022-11-25 17:16:28,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 176 transitions, 1326 flow [2022-11-25 17:16:28,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 176 transitions, 1326 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:16:28,981 INFO L231 Difference]: Finished difference. Result has 70 places, 115 transitions, 751 flow [2022-11-25 17:16:28,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=751, PETRI_PLACES=70, PETRI_TRANSITIONS=115} [2022-11-25 17:16:28,982 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2022-11-25 17:16:28,982 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 115 transitions, 751 flow [2022-11-25 17:16:28,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 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) [2022-11-25 17:16:28,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:28,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:16:28,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:16:28,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:28,984 INFO L85 PathProgramCache]: Analyzing trace with hash 79435736, now seen corresponding path program 1 times [2022-11-25 17:16:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:28,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144363729] [2022-11-25 17:16:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:29,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:29,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144363729] [2022-11-25 17:16:29,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144363729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:29,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:29,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:16:29,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460604925] [2022-11-25 17:16:29,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:29,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:29,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:29,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:29,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:29,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1385 [2022-11-25 17:16:29,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 115 transitions, 751 flow. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 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) [2022-11-25 17:16:29,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:29,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1385 [2022-11-25 17:16:29,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:32,281 INFO L130 PetriNetUnfolder]: 11390/18911 cut-off events. [2022-11-25 17:16:32,281 INFO L131 PetriNetUnfolder]: For 12070/12070 co-relation queries the response was YES. [2022-11-25 17:16:32,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67412 conditions, 18911 events. 11390/18911 cut-off events. For 12070/12070 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 153062 event pairs, 4005 based on Foata normal form. 216/11653 useless extension candidates. Maximal degree in co-relation 65633. Up to 10951 conditions per place. [2022-11-25 17:16:32,381 INFO L137 encePairwiseOnDemand]: 1373/1385 looper letters, 150 selfloop transitions, 17 changer transitions 0/168 dead transitions. [2022-11-25 17:16:32,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 168 transitions, 1356 flow [2022-11-25 17:16:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1738 transitions. [2022-11-25 17:16:32,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41829121540312875 [2022-11-25 17:16:32,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1738 transitions. [2022-11-25 17:16:32,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1738 transitions. [2022-11-25 17:16:32,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:32,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1738 transitions. [2022-11-25 17:16:32,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 579.3333333333334) internal successors, (1738), 3 states have internal predecessors, (1738), 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) [2022-11-25 17:16:32,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:32,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:32,400 INFO L175 Difference]: Start difference. First operand has 70 places, 115 transitions, 751 flow. Second operand 3 states and 1738 transitions. [2022-11-25 17:16:32,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 168 transitions, 1356 flow [2022-11-25 17:16:32,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 168 transitions, 1326 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:16:32,435 INFO L231 Difference]: Finished difference. Result has 71 places, 111 transitions, 748 flow [2022-11-25 17:16:32,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=71, PETRI_TRANSITIONS=111} [2022-11-25 17:16:32,438 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, -3 predicate places. [2022-11-25 17:16:32,438 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 111 transitions, 748 flow [2022-11-25 17:16:32,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 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) [2022-11-25 17:16:32,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:32,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:16:32,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:16:32,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:32,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:32,440 INFO L85 PathProgramCache]: Analyzing trace with hash 79435908, now seen corresponding path program 1 times [2022-11-25 17:16:32,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:32,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080176000] [2022-11-25 17:16:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:32,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:32,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080176000] [2022-11-25 17:16:32,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080176000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:32,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:32,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:16:32,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107544224] [2022-11-25 17:16:32,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:32,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:32,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:32,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1385 [2022-11-25 17:16:32,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 111 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 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) [2022-11-25 17:16:32,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:32,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1385 [2022-11-25 17:16:32,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:36,180 INFO L130 PetriNetUnfolder]: 9775/16624 cut-off events. [2022-11-25 17:16:36,180 INFO L131 PetriNetUnfolder]: For 13577/13577 co-relation queries the response was YES. [2022-11-25 17:16:36,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59949 conditions, 16624 events. 9775/16624 cut-off events. For 13577/13577 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 139689 event pairs, 5426 based on Foata normal form. 864/10992 useless extension candidates. Maximal degree in co-relation 58549. Up to 16424 conditions per place. [2022-11-25 17:16:36,251 INFO L137 encePairwiseOnDemand]: 1382/1385 looper letters, 99 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2022-11-25 17:16:36,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 866 flow [2022-11-25 17:16:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:36,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1700 transitions. [2022-11-25 17:16:36,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4091456077015644 [2022-11-25 17:16:36,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1700 transitions. [2022-11-25 17:16:36,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1700 transitions. [2022-11-25 17:16:36,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:36,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1700 transitions. [2022-11-25 17:16:36,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 566.6666666666666) internal successors, (1700), 3 states have internal predecessors, (1700), 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) [2022-11-25 17:16:36,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:36,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:36,269 INFO L175 Difference]: Start difference. First operand has 71 places, 111 transitions, 748 flow. Second operand 3 states and 1700 transitions. [2022-11-25 17:16:36,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 101 transitions, 866 flow [2022-11-25 17:16:36,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 101 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:36,294 INFO L231 Difference]: Finished difference. Result has 70 places, 101 transitions, 655 flow [2022-11-25 17:16:36,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=655, PETRI_PLACES=70, PETRI_TRANSITIONS=101} [2022-11-25 17:16:36,295 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2022-11-25 17:16:36,295 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 101 transitions, 655 flow [2022-11-25 17:16:36,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 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) [2022-11-25 17:16:36,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:36,296 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:16:36,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:16:36,297 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:36,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash 79435907, now seen corresponding path program 1 times [2022-11-25 17:16:36,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:36,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136941344] [2022-11-25 17:16:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:36,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:36,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:36,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136941344] [2022-11-25 17:16:36,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136941344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:36,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:36,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:16:36,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981643458] [2022-11-25 17:16:36,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:36,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:36,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:36,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:36,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:36,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1385 [2022-11-25 17:16:36,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 101 transitions, 655 flow. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 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) [2022-11-25 17:16:36,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:36,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1385 [2022-11-25 17:16:36,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:38,647 INFO L130 PetriNetUnfolder]: 8160/14365 cut-off events. [2022-11-25 17:16:38,647 INFO L131 PetriNetUnfolder]: For 10400/10400 co-relation queries the response was YES. [2022-11-25 17:16:38,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49706 conditions, 14365 events. 8160/14365 cut-off events. For 10400/10400 co-relation queries the response was YES. Maximal size of possible extension queue 1485. Compared 124215 event pairs, 4963 based on Foata normal form. 468/9535 useless extension candidates. Maximal degree in co-relation 49684. Up to 14165 conditions per place. [2022-11-25 17:16:38,707 INFO L137 encePairwiseOnDemand]: 1382/1385 looper letters, 89 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2022-11-25 17:16:38,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 757 flow [2022-11-25 17:16:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1698 transitions. [2022-11-25 17:16:38,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4086642599277978 [2022-11-25 17:16:38,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1698 transitions. [2022-11-25 17:16:38,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1698 transitions. [2022-11-25 17:16:38,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:38,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1698 transitions. [2022-11-25 17:16:38,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 566.0) internal successors, (1698), 3 states have internal predecessors, (1698), 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) [2022-11-25 17:16:38,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:38,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:38,725 INFO L175 Difference]: Start difference. First operand has 70 places, 101 transitions, 655 flow. Second operand 3 states and 1698 transitions. [2022-11-25 17:16:38,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 757 flow [2022-11-25 17:16:38,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 756 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:38,744 INFO L231 Difference]: Finished difference. Result has 69 places, 91 transitions, 578 flow [2022-11-25 17:16:38,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=578, PETRI_PLACES=69, PETRI_TRANSITIONS=91} [2022-11-25 17:16:38,745 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, -5 predicate places. [2022-11-25 17:16:38,745 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 91 transitions, 578 flow [2022-11-25 17:16:38,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 3 states have internal predecessors, (1657), 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) [2022-11-25 17:16:38,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:38,746 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:16:38,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:16:38,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1835111407, now seen corresponding path program 1 times [2022-11-25 17:16:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:38,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690308136] [2022-11-25 17:16:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:39,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:39,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690308136] [2022-11-25 17:16:39,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690308136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:39,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068209470] [2022-11-25 17:16:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:39,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:39,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:39,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:39,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:16:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:39,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 17:16:39,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:39,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:16:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:39,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 17:16:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:39,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:39,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:16:39,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-25 17:16:39,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:16:39,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 37 [2022-11-25 17:16:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:39,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068209470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:16:39,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:16:39,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-25 17:16:39,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570709048] [2022-11-25 17:16:39,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:16:39,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:16:39,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:39,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:16:39,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:16:39,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 540 out of 1385 [2022-11-25 17:16:40,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 91 transitions, 578 flow. Second operand has 11 states, 11 states have (on average 541.3636363636364) internal successors, (5955), 11 states have internal predecessors, (5955), 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) [2022-11-25 17:16:40,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:40,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 540 of 1385 [2022-11-25 17:16:40,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:43,607 INFO L130 PetriNetUnfolder]: 11224/19881 cut-off events. [2022-11-25 17:16:43,608 INFO L131 PetriNetUnfolder]: For 14263/14263 co-relation queries the response was YES. [2022-11-25 17:16:43,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68155 conditions, 19881 events. 11224/19881 cut-off events. For 14263/14263 co-relation queries the response was YES. Maximal size of possible extension queue 1997. Compared 180471 event pairs, 3067 based on Foata normal form. 0/12823 useless extension candidates. Maximal degree in co-relation 68132. Up to 9965 conditions per place. [2022-11-25 17:16:43,707 INFO L137 encePairwiseOnDemand]: 1368/1385 looper letters, 165 selfloop transitions, 34 changer transitions 1/201 dead transitions. [2022-11-25 17:16:43,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 201 transitions, 1610 flow [2022-11-25 17:16:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:16:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:16:43,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3903 transitions. [2022-11-25 17:16:43,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40257864878803507 [2022-11-25 17:16:43,718 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3903 transitions. [2022-11-25 17:16:43,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3903 transitions. [2022-11-25 17:16:43,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:43,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3903 transitions. [2022-11-25 17:16:43,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 557.5714285714286) internal successors, (3903), 7 states have internal predecessors, (3903), 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) [2022-11-25 17:16:43,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1385.0) internal successors, (11080), 8 states have internal predecessors, (11080), 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) [2022-11-25 17:16:43,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1385.0) internal successors, (11080), 8 states have internal predecessors, (11080), 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) [2022-11-25 17:16:43,743 INFO L175 Difference]: Start difference. First operand has 69 places, 91 transitions, 578 flow. Second operand 7 states and 3903 transitions. [2022-11-25 17:16:43,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 201 transitions, 1610 flow [2022-11-25 17:16:43,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 201 transitions, 1609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:43,768 INFO L231 Difference]: Finished difference. Result has 78 places, 116 transitions, 892 flow [2022-11-25 17:16:43,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=78, PETRI_TRANSITIONS=116} [2022-11-25 17:16:43,769 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2022-11-25 17:16:43,769 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 116 transitions, 892 flow [2022-11-25 17:16:43,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 541.3636363636364) internal successors, (5955), 11 states have internal predecessors, (5955), 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) [2022-11-25 17:16:43,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:43,770 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:16:43,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:43,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 17:16:43,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:43,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1835111327, now seen corresponding path program 1 times [2022-11-25 17:16:43,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:43,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069176447] [2022-11-25 17:16:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:43,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:44,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069176447] [2022-11-25 17:16:44,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069176447] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:44,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051034288] [2022-11-25 17:16:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:44,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:44,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:44,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:44,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:16:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:44,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 17:16:44,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:44,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:16:44,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:44,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 17:16:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:44,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:44,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:16:44,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-25 17:16:44,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:16:44,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2022-11-25 17:16:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:44,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051034288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:16:44,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:16:44,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-25 17:16:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047559617] [2022-11-25 17:16:44,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:16:44,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:16:44,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:44,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:16:44,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2022-11-25 17:16:45,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 527 out of 1385 [2022-11-25 17:16:45,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 116 transitions, 892 flow. Second operand has 11 states, 11 states have (on average 528.3636363636364) internal successors, (5812), 11 states have internal predecessors, (5812), 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) [2022-11-25 17:16:45,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:45,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 527 of 1385 [2022-11-25 17:16:45,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:48,997 INFO L130 PetriNetUnfolder]: 11336/20233 cut-off events. [2022-11-25 17:16:48,997 INFO L131 PetriNetUnfolder]: For 28933/28933 co-relation queries the response was YES. [2022-11-25 17:16:49,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78567 conditions, 20233 events. 11336/20233 cut-off events. For 28933/28933 co-relation queries the response was YES. Maximal size of possible extension queue 2149. Compared 186037 event pairs, 3707 based on Foata normal form. 4/13687 useless extension candidates. Maximal degree in co-relation 78539. Up to 11717 conditions per place. [2022-11-25 17:16:49,093 INFO L137 encePairwiseOnDemand]: 1369/1385 looper letters, 153 selfloop transitions, 46 changer transitions 1/201 dead transitions. [2022-11-25 17:16:49,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 201 transitions, 1785 flow [2022-11-25 17:16:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:16:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:16:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3804 transitions. [2022-11-25 17:16:49,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39236719958741617 [2022-11-25 17:16:49,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3804 transitions. [2022-11-25 17:16:49,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3804 transitions. [2022-11-25 17:16:49,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:49,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3804 transitions. [2022-11-25 17:16:49,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 543.4285714285714) internal successors, (3804), 7 states have internal predecessors, (3804), 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) [2022-11-25 17:16:49,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1385.0) internal successors, (11080), 8 states have internal predecessors, (11080), 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) [2022-11-25 17:16:49,125 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1385.0) internal successors, (11080), 8 states have internal predecessors, (11080), 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) [2022-11-25 17:16:49,126 INFO L175 Difference]: Start difference. First operand has 78 places, 116 transitions, 892 flow. Second operand 7 states and 3804 transitions. [2022-11-25 17:16:49,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 201 transitions, 1785 flow [2022-11-25 17:16:49,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 201 transitions, 1777 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:49,235 INFO L231 Difference]: Finished difference. Result has 84 places, 123 transitions, 1042 flow [2022-11-25 17:16:49,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1042, PETRI_PLACES=84, PETRI_TRANSITIONS=123} [2022-11-25 17:16:49,236 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 10 predicate places. [2022-11-25 17:16:49,236 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 123 transitions, 1042 flow [2022-11-25 17:16:49,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 528.3636363636364) internal successors, (5812), 11 states have internal predecessors, (5812), 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) [2022-11-25 17:16:49,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:49,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:16:49,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:49,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:49,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:49,444 INFO L85 PathProgramCache]: Analyzing trace with hash -971660858, now seen corresponding path program 1 times [2022-11-25 17:16:49,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:49,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172495946] [2022-11-25 17:16:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:49,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:49,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:49,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172495946] [2022-11-25 17:16:49,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172495946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:49,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:49,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:16:49,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595267230] [2022-11-25 17:16:49,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:49,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:16:49,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:49,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:16:49,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:16:49,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 1385 [2022-11-25 17:16:49,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 123 transitions, 1042 flow. Second operand has 4 states, 4 states have (on average 526.5) internal successors, (2106), 4 states have internal predecessors, (2106), 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) [2022-11-25 17:16:49,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:49,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 1385 [2022-11-25 17:16:49,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:53,686 INFO L130 PetriNetUnfolder]: 11194/20009 cut-off events. [2022-11-25 17:16:53,686 INFO L131 PetriNetUnfolder]: For 49864/49864 co-relation queries the response was YES. [2022-11-25 17:16:53,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82322 conditions, 20009 events. 11194/20009 cut-off events. For 49864/49864 co-relation queries the response was YES. Maximal size of possible extension queue 2087. Compared 185098 event pairs, 2009 based on Foata normal form. 12/14023 useless extension candidates. Maximal degree in co-relation 82292. Up to 7469 conditions per place. [2022-11-25 17:16:53,805 INFO L137 encePairwiseOnDemand]: 1353/1385 looper letters, 129 selfloop transitions, 80 changer transitions 1/211 dead transitions. [2022-11-25 17:16:53,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 211 transitions, 2227 flow [2022-11-25 17:16:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:16:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:16:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2768 transitions. [2022-11-25 17:16:53,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39971119133574007 [2022-11-25 17:16:53,813 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2768 transitions. [2022-11-25 17:16:53,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2768 transitions. [2022-11-25 17:16:53,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:53,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2768 transitions. [2022-11-25 17:16:53,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 553.6) internal successors, (2768), 5 states have internal predecessors, (2768), 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) [2022-11-25 17:16:53,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1385.0) internal successors, (8310), 6 states have internal predecessors, (8310), 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) [2022-11-25 17:16:53,829 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1385.0) internal successors, (8310), 6 states have internal predecessors, (8310), 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) [2022-11-25 17:16:53,829 INFO L175 Difference]: Start difference. First operand has 84 places, 123 transitions, 1042 flow. Second operand 5 states and 2768 transitions. [2022-11-25 17:16:53,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 211 transitions, 2227 flow [2022-11-25 17:16:53,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 211 transitions, 2180 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-11-25 17:16:53,948 INFO L231 Difference]: Finished difference. Result has 88 places, 155 transitions, 1673 flow [2022-11-25 17:16:53,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1673, PETRI_PLACES=88, PETRI_TRANSITIONS=155} [2022-11-25 17:16:53,949 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2022-11-25 17:16:53,950 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 155 transitions, 1673 flow [2022-11-25 17:16:53,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 526.5) internal successors, (2106), 4 states have internal predecessors, (2106), 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) [2022-11-25 17:16:53,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:53,950 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:16:53,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:16:53,951 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash -971660790, now seen corresponding path program 1 times [2022-11-25 17:16:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:53,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593054111] [2022-11-25 17:16:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:53,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:54,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:54,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593054111] [2022-11-25 17:16:54,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593054111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:54,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:54,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:16:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558899909] [2022-11-25 17:16:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:54,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:54,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:54,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:54,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:54,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1385 [2022-11-25 17:16:54,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 155 transitions, 1673 flow. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2022-11-25 17:16:54,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:54,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1385 [2022-11-25 17:16:54,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:57,282 INFO L130 PetriNetUnfolder]: 9630/17381 cut-off events. [2022-11-25 17:16:57,282 INFO L131 PetriNetUnfolder]: For 50234/50234 co-relation queries the response was YES. [2022-11-25 17:16:57,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81366 conditions, 17381 events. 9630/17381 cut-off events. For 50234/50234 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 156760 event pairs, 5333 based on Foata normal form. 0/12973 useless extension candidates. Maximal degree in co-relation 81334. Up to 17089 conditions per place. [2022-11-25 17:16:57,389 INFO L137 encePairwiseOnDemand]: 1382/1385 looper letters, 146 selfloop transitions, 1 changer transitions 0/148 dead transitions. [2022-11-25 17:16:57,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 1905 flow [2022-11-25 17:16:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1696 transitions. [2022-11-25 17:16:57,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4081829121540313 [2022-11-25 17:16:57,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1696 transitions. [2022-11-25 17:16:57,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1696 transitions. [2022-11-25 17:16:57,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:57,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1696 transitions. [2022-11-25 17:16:57,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 565.3333333333334) internal successors, (1696), 3 states have internal predecessors, (1696), 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) [2022-11-25 17:16:57,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:57,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:16:57,401 INFO L175 Difference]: Start difference. First operand has 88 places, 155 transitions, 1673 flow. Second operand 3 states and 1696 transitions. [2022-11-25 17:16:57,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 1905 flow [2022-11-25 17:16:57,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 148 transitions, 1897 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-25 17:16:57,823 INFO L231 Difference]: Finished difference. Result has 88 places, 148 transitions, 1605 flow [2022-11-25 17:16:57,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1605, PETRI_PLACES=88, PETRI_TRANSITIONS=148} [2022-11-25 17:16:57,824 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2022-11-25 17:16:57,824 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 148 transitions, 1605 flow [2022-11-25 17:16:57,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2022-11-25 17:16:57,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:57,825 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:16:57,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:16:57,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:16:57,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:57,826 INFO L85 PathProgramCache]: Analyzing trace with hash -971660789, now seen corresponding path program 1 times [2022-11-25 17:16:57,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:57,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748449107] [2022-11-25 17:16:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:57,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:57,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:57,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748449107] [2022-11-25 17:16:57,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748449107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:57,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:57,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:16:57,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763521731] [2022-11-25 17:16:57,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:57,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:57,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:57,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:57,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:57,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1385 [2022-11-25 17:16:57,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 148 transitions, 1605 flow. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2022-11-25 17:16:57,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:57,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1385 [2022-11-25 17:16:57,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:00,603 INFO L130 PetriNetUnfolder]: 8072/14649 cut-off events. [2022-11-25 17:17:00,603 INFO L131 PetriNetUnfolder]: For 43526/43526 co-relation queries the response was YES. [2022-11-25 17:17:00,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67746 conditions, 14649 events. 8072/14649 cut-off events. For 43526/43526 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 129354 event pairs, 4511 based on Foata normal form. 0/11303 useless extension candidates. Maximal degree in co-relation 67712. Up to 14405 conditions per place. [2022-11-25 17:17:00,702 INFO L137 encePairwiseOnDemand]: 1382/1385 looper letters, 139 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2022-11-25 17:17:00,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 141 transitions, 1823 flow [2022-11-25 17:17:00,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1694 transitions. [2022-11-25 17:17:00,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4077015643802647 [2022-11-25 17:17:00,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1694 transitions. [2022-11-25 17:17:00,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1694 transitions. [2022-11-25 17:17:00,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:00,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1694 transitions. [2022-11-25 17:17:00,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 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) [2022-11-25 17:17:00,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:17:00,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:17:00,714 INFO L175 Difference]: Start difference. First operand has 88 places, 148 transitions, 1605 flow. Second operand 3 states and 1694 transitions. [2022-11-25 17:17:00,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 141 transitions, 1823 flow [2022-11-25 17:17:01,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 141 transitions, 1822 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:01,003 INFO L231 Difference]: Finished difference. Result has 87 places, 141 transitions, 1544 flow [2022-11-25 17:17:01,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1544, PETRI_PLACES=87, PETRI_TRANSITIONS=141} [2022-11-25 17:17:01,004 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2022-11-25 17:17:01,004 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 141 transitions, 1544 flow [2022-11-25 17:17:01,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2022-11-25 17:17:01,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:01,005 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:17:01,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:17:01,005 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:17:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:01,006 INFO L85 PathProgramCache]: Analyzing trace with hash -971660937, now seen corresponding path program 1 times [2022-11-25 17:17:01,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:01,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223784390] [2022-11-25 17:17:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:01,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:01,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:01,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223784390] [2022-11-25 17:17:01,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223784390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:01,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:01,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:17:01,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85622167] [2022-11-25 17:17:01,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:01,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:01,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1385 [2022-11-25 17:17:01,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 141 transitions, 1544 flow. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2022-11-25 17:17:01,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:01,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1385 [2022-11-25 17:17:01,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:05,038 INFO L130 PetriNetUnfolder]: 11746/19837 cut-off events. [2022-11-25 17:17:05,039 INFO L131 PetriNetUnfolder]: For 60122/60122 co-relation queries the response was YES. [2022-11-25 17:17:05,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91245 conditions, 19837 events. 11746/19837 cut-off events. For 60122/60122 co-relation queries the response was YES. Maximal size of possible extension queue 1783. Compared 166064 event pairs, 2793 based on Foata normal form. 0/15105 useless extension candidates. Maximal degree in co-relation 91210. Up to 10473 conditions per place. [2022-11-25 17:17:05,151 INFO L137 encePairwiseOnDemand]: 1376/1385 looper letters, 218 selfloop transitions, 19 changer transitions 0/238 dead transitions. [2022-11-25 17:17:05,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 238 transitions, 3169 flow [2022-11-25 17:17:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:05,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1724 transitions. [2022-11-25 17:17:05,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4149217809867629 [2022-11-25 17:17:05,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1724 transitions. [2022-11-25 17:17:05,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1724 transitions. [2022-11-25 17:17:05,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:05,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1724 transitions. [2022-11-25 17:17:05,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 574.6666666666666) internal successors, (1724), 3 states have internal predecessors, (1724), 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) [2022-11-25 17:17:05,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:17:05,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:17:05,163 INFO L175 Difference]: Start difference. First operand has 87 places, 141 transitions, 1544 flow. Second operand 3 states and 1724 transitions. [2022-11-25 17:17:05,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 238 transitions, 3169 flow [2022-11-25 17:17:05,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 238 transitions, 3168 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:05,471 INFO L231 Difference]: Finished difference. Result has 90 places, 158 transitions, 1815 flow [2022-11-25 17:17:05,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1815, PETRI_PLACES=90, PETRI_TRANSITIONS=158} [2022-11-25 17:17:05,472 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2022-11-25 17:17:05,472 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 158 transitions, 1815 flow [2022-11-25 17:17:05,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2022-11-25 17:17:05,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:05,472 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:17:05,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:17:05,473 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:17:05,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:05,473 INFO L85 PathProgramCache]: Analyzing trace with hash -971660792, now seen corresponding path program 1 times [2022-11-25 17:17:05,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:05,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406256362] [2022-11-25 17:17:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:05,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:05,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:05,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406256362] [2022-11-25 17:17:05,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406256362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:05,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:05,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:17:05,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17533093] [2022-11-25 17:17:05,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:05,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:05,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:05,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:05,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:05,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1385 [2022-11-25 17:17:05,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 158 transitions, 1815 flow. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2022-11-25 17:17:05,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:05,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1385 [2022-11-25 17:17:05,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:09,453 INFO L130 PetriNetUnfolder]: 10588/18673 cut-off events. [2022-11-25 17:17:09,453 INFO L131 PetriNetUnfolder]: For 75514/75514 co-relation queries the response was YES. [2022-11-25 17:17:09,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92490 conditions, 18673 events. 10588/18673 cut-off events. For 75514/75514 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 164867 event pairs, 2379 based on Foata normal form. 774/16363 useless extension candidates. Maximal degree in co-relation 92452. Up to 11769 conditions per place. [2022-11-25 17:17:09,580 INFO L137 encePairwiseOnDemand]: 1376/1385 looper letters, 208 selfloop transitions, 16 changer transitions 3/228 dead transitions. [2022-11-25 17:17:09,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 228 transitions, 3166 flow [2022-11-25 17:17:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1722 transitions. [2022-11-25 17:17:09,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4144404332129964 [2022-11-25 17:17:09,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1722 transitions. [2022-11-25 17:17:09,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1722 transitions. [2022-11-25 17:17:09,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:09,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1722 transitions. [2022-11-25 17:17:09,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 574.0) internal successors, (1722), 3 states have internal predecessors, (1722), 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) [2022-11-25 17:17:09,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:17:09,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1385.0) internal successors, (5540), 4 states have internal predecessors, (5540), 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) [2022-11-25 17:17:09,592 INFO L175 Difference]: Start difference. First operand has 90 places, 158 transitions, 1815 flow. Second operand 3 states and 1722 transitions. [2022-11-25 17:17:09,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 228 transitions, 3166 flow [2022-11-25 17:17:09,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 228 transitions, 3064 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:17:09,852 INFO L231 Difference]: Finished difference. Result has 89 places, 145 transitions, 1638 flow [2022-11-25 17:17:09,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1638, PETRI_PLACES=89, PETRI_TRANSITIONS=145} [2022-11-25 17:17:09,853 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2022-11-25 17:17:09,853 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 145 transitions, 1638 flow [2022-11-25 17:17:09,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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) [2022-11-25 17:17:09,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:09,854 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:09,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:17:09,854 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:17:09,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:09,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1689442175, now seen corresponding path program 1 times [2022-11-25 17:17:09,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:09,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125500605] [2022-11-25 17:17:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:09,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:17:10,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:10,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125500605] [2022-11-25 17:17:10,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125500605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:10,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:10,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:17:10,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471248031] [2022-11-25 17:17:10,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:10,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:17:10,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:10,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:17:10,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:17:10,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 529 out of 1385 [2022-11-25 17:17:10,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 145 transitions, 1638 flow. Second operand has 4 states, 4 states have (on average 530.75) internal successors, (2123), 4 states have internal predecessors, (2123), 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) [2022-11-25 17:17:10,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:10,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 529 of 1385 [2022-11-25 17:17:10,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:15,035 INFO L130 PetriNetUnfolder]: 12421/21863 cut-off events. [2022-11-25 17:17:15,035 INFO L131 PetriNetUnfolder]: For 83476/83476 co-relation queries the response was YES. [2022-11-25 17:17:15,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106297 conditions, 21863 events. 12421/21863 cut-off events. For 83476/83476 co-relation queries the response was YES. Maximal size of possible extension queue 2239. Compared 197047 event pairs, 3032 based on Foata normal form. 140/18363 useless extension candidates. Maximal degree in co-relation 106260. Up to 16697 conditions per place. [2022-11-25 17:17:15,171 INFO L137 encePairwiseOnDemand]: 1374/1385 looper letters, 189 selfloop transitions, 34 changer transitions 0/224 dead transitions. [2022-11-25 17:17:15,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 224 transitions, 2855 flow [2022-11-25 17:17:15,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:17:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:17:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2195 transitions. [2022-11-25 17:17:15,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39620938628158847 [2022-11-25 17:17:15,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2195 transitions. [2022-11-25 17:17:15,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2195 transitions. [2022-11-25 17:17:15,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:15,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2195 transitions. [2022-11-25 17:17:15,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 548.75) internal successors, (2195), 4 states have internal predecessors, (2195), 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) [2022-11-25 17:17:15,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1385.0) internal successors, (6925), 5 states have internal predecessors, (6925), 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) [2022-11-25 17:17:15,185 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1385.0) internal successors, (6925), 5 states have internal predecessors, (6925), 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) [2022-11-25 17:17:15,185 INFO L175 Difference]: Start difference. First operand has 89 places, 145 transitions, 1638 flow. Second operand 4 states and 2195 transitions. [2022-11-25 17:17:15,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 224 transitions, 2855 flow [2022-11-25 17:17:15,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 224 transitions, 2853 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 17:17:15,348 INFO L231 Difference]: Finished difference. Result has 95 places, 163 transitions, 2028 flow [2022-11-25 17:17:15,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2028, PETRI_PLACES=95, PETRI_TRANSITIONS=163} [2022-11-25 17:17:15,348 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2022-11-25 17:17:15,348 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 163 transitions, 2028 flow [2022-11-25 17:17:15,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 530.75) internal successors, (2123), 4 states have internal predecessors, (2123), 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) [2022-11-25 17:17:15,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:15,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:17:15,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:17:15,349 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:17:15,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:15,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1053880581, now seen corresponding path program 1 times [2022-11-25 17:17:15,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:15,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524802487] [2022-11-25 17:17:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:15,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:15,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:15,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524802487] [2022-11-25 17:17:15,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524802487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:15,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933701945] [2022-11-25 17:17:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:15,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:15,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:15,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:15,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:17:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 17:17:15,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:15,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:17:16,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:17:16,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 17:17:16,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:17:16,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 17:17:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:16,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:17:16,132 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_294 (Array Int Int)) (v_ArrVal_293 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_293) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_294) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2022-11-25 17:17:16,147 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:17:16,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-11-25 17:17:16,157 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:17:16,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 119 [2022-11-25 17:17:16,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2022-11-25 17:17:16,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2022-11-25 17:17:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-25 17:17:16,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933701945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:17:16,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:17:16,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-11-25 17:17:16,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888353282] [2022-11-25 17:17:16,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:17:16,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:17:16,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:16,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:17:16,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=122, Unknown=2, NotChecked=22, Total=182 [2022-11-25 17:17:16,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 1385 [2022-11-25 17:17:16,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 163 transitions, 2028 flow. Second operand has 14 states, 14 states have (on average 519.2857142857143) internal successors, (7270), 14 states have internal predecessors, (7270), 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) [2022-11-25 17:17:16,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:16,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 1385 [2022-11-25 17:17:16,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:23,080 INFO L130 PetriNetUnfolder]: 14205/25099 cut-off events. [2022-11-25 17:17:23,080 INFO L131 PetriNetUnfolder]: For 123726/123726 co-relation queries the response was YES. [2022-11-25 17:17:23,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125949 conditions, 25099 events. 14205/25099 cut-off events. For 123726/123726 co-relation queries the response was YES. Maximal size of possible extension queue 2512. Compared 229558 event pairs, 4144 based on Foata normal form. 124/21511 useless extension candidates. Maximal degree in co-relation 125907. Up to 11634 conditions per place. [2022-11-25 17:17:23,334 INFO L137 encePairwiseOnDemand]: 1369/1385 looper letters, 168 selfloop transitions, 67 changer transitions 0/236 dead transitions. [2022-11-25 17:17:23,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 236 transitions, 3210 flow [2022-11-25 17:17:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:17:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:17:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3192 transitions. [2022-11-25 17:17:23,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.384115523465704 [2022-11-25 17:17:23,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3192 transitions. [2022-11-25 17:17:23,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3192 transitions. [2022-11-25 17:17:23,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:23,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3192 transitions. [2022-11-25 17:17:23,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 532.0) internal successors, (3192), 6 states have internal predecessors, (3192), 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) [2022-11-25 17:17:23,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1385.0) internal successors, (9695), 7 states have internal predecessors, (9695), 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) [2022-11-25 17:17:23,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1385.0) internal successors, (9695), 7 states have internal predecessors, (9695), 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) [2022-11-25 17:17:23,349 INFO L175 Difference]: Start difference. First operand has 95 places, 163 transitions, 2028 flow. Second operand 6 states and 3192 transitions. [2022-11-25 17:17:23,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 236 transitions, 3210 flow [2022-11-25 17:17:23,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 236 transitions, 3200 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-25 17:17:23,646 INFO L231 Difference]: Finished difference. Result has 101 places, 166 transitions, 2192 flow [2022-11-25 17:17:23,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2192, PETRI_PLACES=101, PETRI_TRANSITIONS=166} [2022-11-25 17:17:23,646 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2022-11-25 17:17:23,647 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 166 transitions, 2192 flow [2022-11-25 17:17:23,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 519.2857142857143) internal successors, (7270), 14 states have internal predecessors, (7270), 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) [2022-11-25 17:17:23,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:23,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:17:23,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:23,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 17:17:23,859 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:17:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1053880661, now seen corresponding path program 1 times [2022-11-25 17:17:23,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:23,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206899114] [2022-11-25 17:17:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:23,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:24,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:24,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206899114] [2022-11-25 17:17:24,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206899114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:24,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284249063] [2022-11-25 17:17:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:24,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:24,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:24,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:17:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 17:17:24,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:24,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:17:24,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:17:24,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 17:17:24,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:17:24,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 17:17:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:24,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:17:24,569 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:17:24,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-25 17:17:24,579 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:17:24,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 137 [2022-11-25 17:17:24,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2022-11-25 17:17:24,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-11-25 17:17:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:24,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284249063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:17:24,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:17:24,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-11-25 17:17:24,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837516676] [2022-11-25 17:17:24,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:17:24,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:17:24,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:24,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:17:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=143, Unknown=2, NotChecked=0, Total=182 [2022-11-25 17:17:24,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 1385 [2022-11-25 17:17:24,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 166 transitions, 2192 flow. Second operand has 14 states, 14 states have (on average 519.2857142857143) internal successors, (7270), 14 states have internal predecessors, (7270), 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) [2022-11-25 17:17:24,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:24,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 1385 [2022-11-25 17:17:24,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:31,497 INFO L130 PetriNetUnfolder]: 13813/24443 cut-off events. [2022-11-25 17:17:31,497 INFO L131 PetriNetUnfolder]: For 135005/135005 co-relation queries the response was YES. [2022-11-25 17:17:31,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127233 conditions, 24443 events. 13813/24443 cut-off events. For 135005/135005 co-relation queries the response was YES. Maximal size of possible extension queue 2504. Compared 223650 event pairs, 3928 based on Foata normal form. 248/21075 useless extension candidates. Maximal degree in co-relation 127188. Up to 10322 conditions per place. [2022-11-25 17:17:31,642 INFO L137 encePairwiseOnDemand]: 1368/1385 looper letters, 182 selfloop transitions, 50 changer transitions 0/233 dead transitions. [2022-11-25 17:17:31,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 233 transitions, 3304 flow [2022-11-25 17:17:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:17:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:17:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3194 transitions. [2022-11-25 17:17:31,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38435619735258725 [2022-11-25 17:17:31,648 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3194 transitions. [2022-11-25 17:17:31,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3194 transitions. [2022-11-25 17:17:31,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:31,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3194 transitions. [2022-11-25 17:17:31,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 532.3333333333334) internal successors, (3194), 6 states have internal predecessors, (3194), 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) [2022-11-25 17:17:31,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1385.0) internal successors, (9695), 7 states have internal predecessors, (9695), 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) [2022-11-25 17:17:31,662 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1385.0) internal successors, (9695), 7 states have internal predecessors, (9695), 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) [2022-11-25 17:17:31,662 INFO L175 Difference]: Start difference. First operand has 101 places, 166 transitions, 2192 flow. Second operand 6 states and 3194 transitions. [2022-11-25 17:17:31,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 233 transitions, 3304 flow [2022-11-25 17:17:31,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 233 transitions, 3293 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-25 17:17:31,959 INFO L231 Difference]: Finished difference. Result has 104 places, 163 transitions, 2243 flow [2022-11-25 17:17:31,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1385, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2243, PETRI_PLACES=104, PETRI_TRANSITIONS=163} [2022-11-25 17:17:31,960 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-11-25 17:17:31,960 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 163 transitions, 2243 flow [2022-11-25 17:17:31,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 519.2857142857143) internal successors, (7270), 14 states have internal predecessors, (7270), 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) [2022-11-25 17:17:31,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:31,962 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 17:17:31,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 17:17:32,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 17:17:32,163 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-25 17:17:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1056622061, now seen corresponding path program 2 times [2022-11-25 17:17:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:32,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534839316] [2022-11-25 17:17:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:32,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:32,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:32,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534839316] [2022-11-25 17:17:32,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534839316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:32,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093448055] [2022-11-25 17:17:32,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:17:32,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:32,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:32,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:32,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0bc51b-0b9c-4788-9556-cb31ed02f7a3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:17:32,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:17:32,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:17:32,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:17:32,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:17:32,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:17:32,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093448055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:32,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:17:32,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 17:17:32,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864748258] [2022-11-25 17:17:32,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:32,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:17:32,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 553 out of 1385 [2022-11-25 17:17:32,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 163 transitions, 2243 flow. Second operand has 3 states, 3 states have (on average 554.0) internal successors, (1662), 3 states have internal predecessors, (1662), 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) [2022-11-25 17:17:32,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:32,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 553 of 1385 [2022-11-25 17:17:32,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand