./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro --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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --- 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-8393723 [2022-11-18 19:46:39,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:46:39,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:46:39,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:46:39,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:46:39,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:46:39,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:46:39,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:46:39,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:46:39,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:46:39,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:46:39,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:46:39,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:46:39,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:46:39,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:46:39,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:46:40,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:46:40,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:46:40,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:46:40,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:46:40,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:46:40,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:46:40,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:46:40,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:46:40,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:46:40,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:46:40,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:46:40,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:46:40,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:46:40,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:46:40,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:46:40,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:46:40,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:46:40,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:46:40,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:46:40,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:46:40,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:46:40,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:46:40,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:46:40,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:46:40,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:46:40,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:46:40,086 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:46:40,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:46:40,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:46:40,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:46:40,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:46:40,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:46:40,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:46:40,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:46:40,092 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:46:40,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:46:40,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:46:40,094 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:46:40,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:46:40,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:46:40,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:46:40,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:46:40,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:46:40,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:46:40,095 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:46:40,096 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:46:40,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:46:40,096 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:46:40,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:46:40,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:46:40,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:46:40,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:46:40,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:46:40,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:46:40,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:46:40,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:46:40,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:46:40,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:46:40,101 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:46:40,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:46:40,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:46:40,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 [2022-11-18 19:46:40,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:46:40,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:46:40,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:46:40,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:46:40,428 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:46:40,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-11-18 19:46:40,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/data/3942e57f4/3e382d4b2ead4d75a999d30f83364951/FLAGf68aa62b6 [2022-11-18 19:46:41,015 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:46:41,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-11-18 19:46:41,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/data/3942e57f4/3e382d4b2ead4d75a999d30f83364951/FLAGf68aa62b6 [2022-11-18 19:46:41,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/data/3942e57f4/3e382d4b2ead4d75a999d30f83364951 [2022-11-18 19:46:41,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:46:41,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:46:41,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:46:41,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:46:41,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:46:41,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4405b5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41, skipping insertion in model container [2022-11-18 19:46:41,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:46:41,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:46:41,759 WARN L234 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_328ee909-c3ab-4801-bdd2-88f53cd40cdf/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-11-18 19:46:41,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:46:41,769 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:46:41,789 WARN L234 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_328ee909-c3ab-4801-bdd2-88f53cd40cdf/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-11-18 19:46:41,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:46:41,805 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:46:41,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41 WrapperNode [2022-11-18 19:46:41,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:46:41,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:46:41,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:46:41,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:46:41,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,867 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-18 19:46:41,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:46:41,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:46:41,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:46:41,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:46:41,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,903 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:46:41,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:46:41,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:46:41,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:46:41,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (1/1) ... [2022-11-18 19:46:41,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:46:41,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:41,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:46:41,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:46:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:46:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:46:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:46:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:46:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:46:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:46:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:46:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:46:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:46:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:46:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:46:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:46:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:46:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:46:42,013 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:46:42,108 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:46:42,110 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:46:42,304 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:46:42,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:46:42,338 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:46:42,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:46:42 BoogieIcfgContainer [2022-11-18 19:46:42,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:46:42,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:46:42,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:46:42,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:46:42,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:46:41" (1/3) ... [2022-11-18 19:46:42,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504b2b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:46:42, skipping insertion in model container [2022-11-18 19:46:42,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:41" (2/3) ... [2022-11-18 19:46:42,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504b2b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:46:42, skipping insertion in model container [2022-11-18 19:46:42,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:46:42" (3/3) ... [2022-11-18 19:46:42,351 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-11-18 19:46:42,359 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:46:42,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:46:42,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:46:42,371 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:46:42,516 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:46:42,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 212 flow [2022-11-18 19:46:42,620 INFO L130 PetriNetUnfolder]: 6/96 cut-off events. [2022-11-18 19:46:42,621 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:46:42,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 6/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2022-11-18 19:46:42,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 212 flow [2022-11-18 19:46:42,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 77 transitions, 163 flow [2022-11-18 19:46:42,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:46:42,652 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;@52d8d7cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:46:42,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 19:46:42,668 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-11-18 19:46:42,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:46:42,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:42,669 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:42,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash -340817317, now seen corresponding path program 1 times [2022-11-18 19:46:42,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:42,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269528201] [2022-11-18 19:46:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:42,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:42,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:42,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269528201] [2022-11-18 19:46:42,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269528201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:42,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:42,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:46:42,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44508456] [2022-11-18 19:46:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:42,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:46:42,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:42,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:46:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:46:42,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 98 [2022-11-18 19:46:42,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 163 flow. Second operand has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 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) [2022-11-18 19:46:42,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:42,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 98 [2022-11-18 19:46:42,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:43,096 INFO L130 PetriNetUnfolder]: 10/100 cut-off events. [2022-11-18 19:46:43,097 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-18 19:46:43,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 100 events. 10/100 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 225 event pairs, 8 based on Foata normal form. 9/92 useless extension candidates. Maximal degree in co-relation 82. Up to 24 conditions per place. [2022-11-18 19:46:43,102 INFO L137 encePairwiseOnDemand]: 95/98 looper letters, 7 selfloop transitions, 0 changer transitions 1/74 dead transitions. [2022-11-18 19:46:43,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 171 flow [2022-11-18 19:46:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:46:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:46:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2022-11-18 19:46:43,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9183673469387755 [2022-11-18 19:46:43,123 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2022-11-18 19:46:43,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2022-11-18 19:46:43,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:43,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2022-11-18 19:46:43,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 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) [2022-11-18 19:46:43,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2022-11-18 19:46:43,154 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2022-11-18 19:46:43,156 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 163 flow. Second operand 2 states and 180 transitions. [2022-11-18 19:46:43,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 171 flow [2022-11-18 19:46:43,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:43,171 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 150 flow [2022-11-18 19:46:43,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2022-11-18 19:46:43,182 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2022-11-18 19:46:43,182 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 150 flow [2022-11-18 19:46:43,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 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) [2022-11-18 19:46:43,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:43,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:43,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:46:43,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash -340817286, now seen corresponding path program 1 times [2022-11-18 19:46:43,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:43,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437581595] [2022-11-18 19:46:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:43,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:43,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:43,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437581595] [2022-11-18 19:46:43,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437581595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:43,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:43,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:43,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64663731] [2022-11-18 19:46:43,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:43,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:43,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:43,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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) [2022-11-18 19:46:43,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:43,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:43,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:43,808 INFO L130 PetriNetUnfolder]: 75/278 cut-off events. [2022-11-18 19:46:43,808 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 19:46:43,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 278 events. 75/278 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1321 event pairs, 27 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 449. Up to 55 conditions per place. [2022-11-18 19:46:43,812 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 32 selfloop transitions, 12 changer transitions 2/96 dead transitions. [2022-11-18 19:46:43,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 292 flow [2022-11-18 19:46:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:46:43,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 523 transitions. [2022-11-18 19:46:43,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7623906705539358 [2022-11-18 19:46:43,817 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 523 transitions. [2022-11-18 19:46:43,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 523 transitions. [2022-11-18 19:46:43,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:43,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 523 transitions. [2022-11-18 19:46:43,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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) [2022-11-18 19:46:43,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:43,824 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:43,824 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 150 flow. Second operand 7 states and 523 transitions. [2022-11-18 19:46:43,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 292 flow [2022-11-18 19:46:43,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:46:43,828 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 209 flow [2022-11-18 19:46:43,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=209, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2022-11-18 19:46:43,829 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2022-11-18 19:46:43,829 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 209 flow [2022-11-18 19:46:43,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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) [2022-11-18 19:46:43,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:43,830 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:43,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:46:43,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:43,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:43,832 INFO L85 PathProgramCache]: Analyzing trace with hash -340817285, now seen corresponding path program 1 times [2022-11-18 19:46:43,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:43,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031440110] [2022-11-18 19:46:43,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:43,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:43,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031440110] [2022-11-18 19:46:43,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031440110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:43,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:43,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:43,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343475211] [2022-11-18 19:46:43,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:43,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:43,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:43,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:43,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:43,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-18 19:46:43,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:43,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:43,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-18 19:46:43,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:44,107 INFO L130 PetriNetUnfolder]: 48/194 cut-off events. [2022-11-18 19:46:44,108 INFO L131 PetriNetUnfolder]: For 46/51 co-relation queries the response was YES. [2022-11-18 19:46:44,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 194 events. 48/194 cut-off events. For 46/51 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 821 event pairs, 15 based on Foata normal form. 9/172 useless extension candidates. Maximal degree in co-relation 391. Up to 44 conditions per place. [2022-11-18 19:46:44,111 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 26 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2022-11-18 19:46:44,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 311 flow [2022-11-18 19:46:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:46:44,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:46:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2022-11-18 19:46:44,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8443877551020408 [2022-11-18 19:46:44,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2022-11-18 19:46:44,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2022-11-18 19:46:44,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:44,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2022-11-18 19:46:44,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2022-11-18 19:46:44,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 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) [2022-11-18 19:46:44,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 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) [2022-11-18 19:46:44,118 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 209 flow. Second operand 4 states and 331 transitions. [2022-11-18 19:46:44,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 311 flow [2022-11-18 19:46:44,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 298 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:46:44,123 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 231 flow [2022-11-18 19:46:44,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2022-11-18 19:46:44,124 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2022-11-18 19:46:44,124 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 231 flow [2022-11-18 19:46:44,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:44,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:44,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:44,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:46:44,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1975399980, now seen corresponding path program 1 times [2022-11-18 19:46:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:44,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292036226] [2022-11-18 19:46:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:44,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:44,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292036226] [2022-11-18 19:46:44,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292036226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:44,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:44,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:44,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762297899] [2022-11-18 19:46:44,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:44,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:44,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:44,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:44,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2022-11-18 19:46:44,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2022-11-18 19:46:44,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:44,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2022-11-18 19:46:44,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:44,284 INFO L130 PetriNetUnfolder]: 49/202 cut-off events. [2022-11-18 19:46:44,285 INFO L131 PetriNetUnfolder]: For 67/84 co-relation queries the response was YES. [2022-11-18 19:46:44,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 202 events. 49/202 cut-off events. For 67/84 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 920 event pairs, 21 based on Foata normal form. 3/178 useless extension candidates. Maximal degree in co-relation 435. Up to 58 conditions per place. [2022-11-18 19:46:44,289 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 29 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2022-11-18 19:46:44,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 338 flow [2022-11-18 19:46:44,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:44,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:46:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2022-11-18 19:46:44,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8020408163265306 [2022-11-18 19:46:44,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 393 transitions. [2022-11-18 19:46:44,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 393 transitions. [2022-11-18 19:46:44,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:44,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 393 transitions. [2022-11-18 19:46:44,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 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) [2022-11-18 19:46:44,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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) [2022-11-18 19:46:44,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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) [2022-11-18 19:46:44,301 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 231 flow. Second operand 5 states and 393 transitions. [2022-11-18 19:46:44,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 338 flow [2022-11-18 19:46:44,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:44,312 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 234 flow [2022-11-18 19:46:44,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2022-11-18 19:46:44,322 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2022-11-18 19:46:44,322 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 234 flow [2022-11-18 19:46:44,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2022-11-18 19:46:44,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:44,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:46:44,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1107856962, now seen corresponding path program 1 times [2022-11-18 19:46:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:44,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463043689] [2022-11-18 19:46:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:44,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:44,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:44,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463043689] [2022-11-18 19:46:44,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463043689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:44,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:44,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:44,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550767106] [2022-11-18 19:46:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:44,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:44,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:44,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:44,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 98 [2022-11-18 19:46:44,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 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) [2022-11-18 19:46:44,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:44,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 98 [2022-11-18 19:46:44,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:44,626 INFO L130 PetriNetUnfolder]: 60/207 cut-off events. [2022-11-18 19:46:44,627 INFO L131 PetriNetUnfolder]: For 85/88 co-relation queries the response was YES. [2022-11-18 19:46:44,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 207 events. 60/207 cut-off events. For 85/88 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 928 event pairs, 25 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 485. Up to 74 conditions per place. [2022-11-18 19:46:44,629 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 34 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2022-11-18 19:46:44,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 348 flow [2022-11-18 19:46:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:46:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:46:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2022-11-18 19:46:44,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7295918367346939 [2022-11-18 19:46:44,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 429 transitions. [2022-11-18 19:46:44,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 429 transitions. [2022-11-18 19:46:44,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:44,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 429 transitions. [2022-11-18 19:46:44,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2022-11-18 19:46:44,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:44,636 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:44,636 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 234 flow. Second operand 6 states and 429 transitions. [2022-11-18 19:46:44,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 348 flow [2022-11-18 19:46:44,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:46:44,640 INFO L231 Difference]: Finished difference. Result has 87 places, 79 transitions, 234 flow [2022-11-18 19:46:44,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2022-11-18 19:46:44,641 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2022-11-18 19:46:44,641 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 234 flow [2022-11-18 19:46:44,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 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) [2022-11-18 19:46:44,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:44,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:44,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:46:44,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:44,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:44,643 INFO L85 PathProgramCache]: Analyzing trace with hash 866190475, now seen corresponding path program 1 times [2022-11-18 19:46:44,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:44,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070159835] [2022-11-18 19:46:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:44,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:44,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070159835] [2022-11-18 19:46:44,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070159835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:44,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:44,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:44,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081203643] [2022-11-18 19:46:44,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:44,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:44,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:44,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:44,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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) [2022-11-18 19:46:44,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:44,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:44,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:44,879 INFO L130 PetriNetUnfolder]: 72/225 cut-off events. [2022-11-18 19:46:44,879 INFO L131 PetriNetUnfolder]: For 173/220 co-relation queries the response was YES. [2022-11-18 19:46:44,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 225 events. 72/225 cut-off events. For 173/220 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 915 event pairs, 18 based on Foata normal form. 11/200 useless extension candidates. Maximal degree in co-relation 513. Up to 65 conditions per place. [2022-11-18 19:46:44,881 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 29 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2022-11-18 19:46:44,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 410 flow [2022-11-18 19:46:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:46:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2022-11-18 19:46:44,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2022-11-18 19:46:44,884 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2022-11-18 19:46:44,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2022-11-18 19:46:44,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:44,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2022-11-18 19:46:44,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-11-18 19:46:44,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:44,889 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:44,889 INFO L175 Difference]: Start difference. First operand has 87 places, 79 transitions, 234 flow. Second operand 7 states and 518 transitions. [2022-11-18 19:46:44,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 410 flow [2022-11-18 19:46:44,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 394 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:46:44,893 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 335 flow [2022-11-18 19:46:44,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2022-11-18 19:46:44,894 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2022-11-18 19:46:44,895 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 335 flow [2022-11-18 19:46:44,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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) [2022-11-18 19:46:44,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:44,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:44,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:46:44,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:44,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:44,896 INFO L85 PathProgramCache]: Analyzing trace with hash 866190476, now seen corresponding path program 1 times [2022-11-18 19:46:44,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:44,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297031342] [2022-11-18 19:46:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:44,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:44,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:44,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297031342] [2022-11-18 19:46:44,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297031342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:44,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:44,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:44,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696616081] [2022-11-18 19:46:44,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:44,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:44,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:44,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-18 19:46:44,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2022-11-18 19:46:44,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:44,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-18 19:46:44,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:45,066 INFO L130 PetriNetUnfolder]: 56/194 cut-off events. [2022-11-18 19:46:45,067 INFO L131 PetriNetUnfolder]: For 233/329 co-relation queries the response was YES. [2022-11-18 19:46:45,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 194 events. 56/194 cut-off events. For 233/329 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 756 event pairs, 13 based on Foata normal form. 28/204 useless extension candidates. Maximal degree in co-relation 489. Up to 65 conditions per place. [2022-11-18 19:46:45,069 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 23 selfloop transitions, 18 changer transitions 0/100 dead transitions. [2022-11-18 19:46:45,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 473 flow [2022-11-18 19:46:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:46:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:46:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 328 transitions. [2022-11-18 19:46:45,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8367346938775511 [2022-11-18 19:46:45,073 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 328 transitions. [2022-11-18 19:46:45,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 328 transitions. [2022-11-18 19:46:45,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:45,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 328 transitions. [2022-11-18 19:46:45,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-11-18 19:46:45,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 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) [2022-11-18 19:46:45,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 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) [2022-11-18 19:46:45,077 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 335 flow. Second operand 4 states and 328 transitions. [2022-11-18 19:46:45,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 473 flow [2022-11-18 19:46:45,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 100 transitions, 450 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:46:45,084 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 403 flow [2022-11-18 19:46:45,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=403, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2022-11-18 19:46:45,085 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-11-18 19:46:45,086 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 403 flow [2022-11-18 19:46:45,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2022-11-18 19:46:45,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:45,088 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:45,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:46:45,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:45,089 INFO L85 PathProgramCache]: Analyzing trace with hash 768446914, now seen corresponding path program 1 times [2022-11-18 19:46:45,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:45,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386180403] [2022-11-18 19:46:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:45,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:45,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:45,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386180403] [2022-11-18 19:46:45,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386180403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:45,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:45,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:45,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289598626] [2022-11-18 19:46:45,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:45,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:45,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:45,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:45,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:45,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2022-11-18 19:46:45,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 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) [2022-11-18 19:46:45,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:45,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2022-11-18 19:46:45,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:45,420 INFO L130 PetriNetUnfolder]: 64/228 cut-off events. [2022-11-18 19:46:45,420 INFO L131 PetriNetUnfolder]: For 332/432 co-relation queries the response was YES. [2022-11-18 19:46:45,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 228 events. 64/228 cut-off events. For 332/432 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 958 event pairs, 13 based on Foata normal form. 35/240 useless extension candidates. Maximal degree in co-relation 643. Up to 56 conditions per place. [2022-11-18 19:46:45,424 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 32 selfloop transitions, 30 changer transitions 0/118 dead transitions. [2022-11-18 19:46:45,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 118 transitions, 675 flow [2022-11-18 19:46:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:46:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-11-18 19:46:45,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7813411078717201 [2022-11-18 19:46:45,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-11-18 19:46:45,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-11-18 19:46:45,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:45,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-11-18 19:46:45,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2022-11-18 19:46:45,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:45,435 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:45,436 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 403 flow. Second operand 7 states and 536 transitions. [2022-11-18 19:46:45,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 118 transitions, 675 flow [2022-11-18 19:46:45,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 118 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:45,441 INFO L231 Difference]: Finished difference. Result has 100 places, 104 transitions, 573 flow [2022-11-18 19:46:45,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=100, PETRI_TRANSITIONS=104} [2022-11-18 19:46:45,445 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2022-11-18 19:46:45,445 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 104 transitions, 573 flow [2022-11-18 19:46:45,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 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) [2022-11-18 19:46:45,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:45,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:46:45,447 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:45,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1082102260, now seen corresponding path program 1 times [2022-11-18 19:46:45,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:45,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371476957] [2022-11-18 19:46:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:45,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:45,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371476957] [2022-11-18 19:46:45,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371476957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:45,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:45,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:45,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9318785] [2022-11-18 19:46:45,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:45,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:45,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:45,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:45,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:45,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2022-11-18 19:46:45,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 104 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2022-11-18 19:46:45,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:45,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2022-11-18 19:46:45,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:45,616 INFO L130 PetriNetUnfolder]: 58/169 cut-off events. [2022-11-18 19:46:45,616 INFO L131 PetriNetUnfolder]: For 561/683 co-relation queries the response was YES. [2022-11-18 19:46:45,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 169 events. 58/169 cut-off events. For 561/683 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 567 event pairs, 7 based on Foata normal form. 23/185 useless extension candidates. Maximal degree in co-relation 595. Up to 61 conditions per place. [2022-11-18 19:46:45,619 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 47 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2022-11-18 19:46:45,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 764 flow [2022-11-18 19:46:45,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:46:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2022-11-18 19:46:45,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2022-11-18 19:46:45,622 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2022-11-18 19:46:45,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2022-11-18 19:46:45,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:45,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2022-11-18 19:46:45,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2022-11-18 19:46:45,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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) [2022-11-18 19:46:45,637 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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) [2022-11-18 19:46:45,638 INFO L175 Difference]: Start difference. First operand has 100 places, 104 transitions, 573 flow. Second operand 5 states and 390 transitions. [2022-11-18 19:46:45,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 764 flow [2022-11-18 19:46:45,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:45,644 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 558 flow [2022-11-18 19:46:45,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2022-11-18 19:46:45,646 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2022-11-18 19:46:45,646 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 558 flow [2022-11-18 19:46:45,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2022-11-18 19:46:45,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:45,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:45,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:46:45,648 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:45,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash -814568017, now seen corresponding path program 1 times [2022-11-18 19:46:45,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:45,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371018078] [2022-11-18 19:46:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:45,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:45,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:45,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371018078] [2022-11-18 19:46:45,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371018078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:45,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:45,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160346432] [2022-11-18 19:46:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:45,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 98 [2022-11-18 19:46:45,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 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) [2022-11-18 19:46:45,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:45,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 98 [2022-11-18 19:46:45,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:45,898 INFO L130 PetriNetUnfolder]: 69/197 cut-off events. [2022-11-18 19:46:45,898 INFO L131 PetriNetUnfolder]: For 597/699 co-relation queries the response was YES. [2022-11-18 19:46:45,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 197 events. 69/197 cut-off events. For 597/699 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 700 event pairs, 5 based on Foata normal form. 36/226 useless extension candidates. Maximal degree in co-relation 670. Up to 67 conditions per place. [2022-11-18 19:46:45,901 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 54 selfloop transitions, 7 changer transitions 0/112 dead transitions. [2022-11-18 19:46:45,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 112 transitions, 768 flow [2022-11-18 19:46:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:46:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:46:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 427 transitions. [2022-11-18 19:46:45,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2022-11-18 19:46:45,904 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 427 transitions. [2022-11-18 19:46:45,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 427 transitions. [2022-11-18 19:46:45,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:45,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 427 transitions. [2022-11-18 19:46:45,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2022-11-18 19:46:45,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:45,910 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:45,910 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 558 flow. Second operand 6 states and 427 transitions. [2022-11-18 19:46:45,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 112 transitions, 768 flow [2022-11-18 19:46:45,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 756 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:46:45,916 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 558 flow [2022-11-18 19:46:45,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=102, PETRI_TRANSITIONS=102} [2022-11-18 19:46:45,918 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2022-11-18 19:46:45,918 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 558 flow [2022-11-18 19:46:45,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 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) [2022-11-18 19:46:45,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:45,919 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:45,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:46:45,919 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash 881206193, now seen corresponding path program 1 times [2022-11-18 19:46:45,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:45,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107205130] [2022-11-18 19:46:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:46,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:46,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107205130] [2022-11-18 19:46:46,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107205130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:46,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:46,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:46,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961352322] [2022-11-18 19:46:46,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:46,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:46,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:46,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:46,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:46,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-18 19:46:46,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:46,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:46,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-18 19:46:46,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:46,201 INFO L130 PetriNetUnfolder]: 131/337 cut-off events. [2022-11-18 19:46:46,201 INFO L131 PetriNetUnfolder]: For 747/747 co-relation queries the response was YES. [2022-11-18 19:46:46,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 337 events. 131/337 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1412 event pairs, 44 based on Foata normal form. 2/330 useless extension candidates. Maximal degree in co-relation 1130. Up to 110 conditions per place. [2022-11-18 19:46:46,219 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 47 selfloop transitions, 33 changer transitions 0/128 dead transitions. [2022-11-18 19:46:46,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 128 transitions, 859 flow [2022-11-18 19:46:46,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-11-18 19:46:46,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7742346938775511 [2022-11-18 19:46:46,222 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-11-18 19:46:46,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-11-18 19:46:46,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:46,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-11-18 19:46:46,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 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) [2022-11-18 19:46:46,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:46,228 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:46,228 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 558 flow. Second operand 8 states and 607 transitions. [2022-11-18 19:46:46,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 128 transitions, 859 flow [2022-11-18 19:46:46,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 128 transitions, 839 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:46:46,234 INFO L231 Difference]: Finished difference. Result has 105 places, 108 transitions, 660 flow [2022-11-18 19:46:46,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=660, PETRI_PLACES=105, PETRI_TRANSITIONS=108} [2022-11-18 19:46:46,236 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 26 predicate places. [2022-11-18 19:46:46,236 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 108 transitions, 660 flow [2022-11-18 19:46:46,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:46,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:46,237 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:46,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:46:46,237 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:46,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1292247592, now seen corresponding path program 1 times [2022-11-18 19:46:46,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:46,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33216372] [2022-11-18 19:46:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:46,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:46,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:46,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33216372] [2022-11-18 19:46:46,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33216372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:46,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:46,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:46:46,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017339587] [2022-11-18 19:46:46,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:46,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:46:46,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:46,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:46:46,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:46:46,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-18 19:46:46,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 108 transitions, 660 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:46,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:46,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-18 19:46:46,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:46,827 INFO L130 PetriNetUnfolder]: 158/416 cut-off events. [2022-11-18 19:46:46,828 INFO L131 PetriNetUnfolder]: For 1216/1218 co-relation queries the response was YES. [2022-11-18 19:46:46,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 416 events. 158/416 cut-off events. For 1216/1218 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1998 event pairs, 31 based on Foata normal form. 6/409 useless extension candidates. Maximal degree in co-relation 1433. Up to 80 conditions per place. [2022-11-18 19:46:46,833 INFO L137 encePairwiseOnDemand]: 84/98 looper letters, 60 selfloop transitions, 52 changer transitions 1/155 dead transitions. [2022-11-18 19:46:46,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 155 transitions, 1191 flow [2022-11-18 19:46:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:46:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:46:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 725 transitions. [2022-11-18 19:46:46,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6725417439703154 [2022-11-18 19:46:46,836 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 725 transitions. [2022-11-18 19:46:46,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 725 transitions. [2022-11-18 19:46:46,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:46,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 725 transitions. [2022-11-18 19:46:46,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.9090909090909) internal successors, (725), 11 states have internal predecessors, (725), 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) [2022-11-18 19:46:46,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-11-18 19:46:46,843 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-11-18 19:46:46,843 INFO L175 Difference]: Start difference. First operand has 105 places, 108 transitions, 660 flow. Second operand 11 states and 725 transitions. [2022-11-18 19:46:46,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 155 transitions, 1191 flow [2022-11-18 19:46:46,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 155 transitions, 1106 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-18 19:46:46,853 INFO L231 Difference]: Finished difference. Result has 113 places, 124 transitions, 893 flow [2022-11-18 19:46:46,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=893, PETRI_PLACES=113, PETRI_TRANSITIONS=124} [2022-11-18 19:46:46,854 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2022-11-18 19:46:46,854 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 124 transitions, 893 flow [2022-11-18 19:46:46,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:46,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:46,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:46,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:46:46,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:46,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:46,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1657652532, now seen corresponding path program 2 times [2022-11-18 19:46:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:46,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661694261] [2022-11-18 19:46:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:46,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:47,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:47,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661694261] [2022-11-18 19:46:47,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661694261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:47,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:47,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:46:47,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011206640] [2022-11-18 19:46:47,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:47,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:46:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:46:47,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:46:47,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-18 19:46:47,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 124 transitions, 893 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:47,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:47,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-18 19:46:47,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:47,366 INFO L130 PetriNetUnfolder]: 181/493 cut-off events. [2022-11-18 19:46:47,366 INFO L131 PetriNetUnfolder]: For 1879/1891 co-relation queries the response was YES. [2022-11-18 19:46:47,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1708 conditions, 493 events. 181/493 cut-off events. For 1879/1891 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2598 event pairs, 42 based on Foata normal form. 10/488 useless extension candidates. Maximal degree in co-relation 1691. Up to 101 conditions per place. [2022-11-18 19:46:47,372 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 56 selfloop transitions, 52 changer transitions 1/151 dead transitions. [2022-11-18 19:46:47,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 151 transitions, 1276 flow [2022-11-18 19:46:47,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:46:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:46:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 591 transitions. [2022-11-18 19:46:47,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6700680272108843 [2022-11-18 19:46:47,375 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 591 transitions. [2022-11-18 19:46:47,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 591 transitions. [2022-11-18 19:46:47,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:47,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 591 transitions. [2022-11-18 19:46:47,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.66666666666667) internal successors, (591), 9 states have internal predecessors, (591), 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) [2022-11-18 19:46:47,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:47,381 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:47,381 INFO L175 Difference]: Start difference. First operand has 113 places, 124 transitions, 893 flow. Second operand 9 states and 591 transitions. [2022-11-18 19:46:47,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 151 transitions, 1276 flow [2022-11-18 19:46:47,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 151 transitions, 1160 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-18 19:46:47,393 INFO L231 Difference]: Finished difference. Result has 117 places, 131 transitions, 1023 flow [2022-11-18 19:46:47,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=117, PETRI_TRANSITIONS=131} [2022-11-18 19:46:47,394 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2022-11-18 19:46:47,394 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 131 transitions, 1023 flow [2022-11-18 19:46:47,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:47,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:47,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:47,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:46:47,396 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:47,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1657652531, now seen corresponding path program 2 times [2022-11-18 19:46:47,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:47,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797923717] [2022-11-18 19:46:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:47,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:47,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:47,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797923717] [2022-11-18 19:46:47,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797923717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:47,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:47,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:47,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635996347] [2022-11-18 19:46:47,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:47,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:47,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:47,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:47,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-18 19:46:47,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 131 transitions, 1023 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:47,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:47,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-18 19:46:47,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:47,754 INFO L130 PetriNetUnfolder]: 184/520 cut-off events. [2022-11-18 19:46:47,754 INFO L131 PetriNetUnfolder]: For 2185/2197 co-relation queries the response was YES. [2022-11-18 19:46:47,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 520 events. 184/520 cut-off events. For 2185/2197 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2809 event pairs, 55 based on Foata normal form. 14/519 useless extension candidates. Maximal degree in co-relation 1883. Up to 158 conditions per place. [2022-11-18 19:46:47,760 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 65 selfloop transitions, 54 changer transitions 2/169 dead transitions. [2022-11-18 19:46:47,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 169 transitions, 1639 flow [2022-11-18 19:46:47,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2022-11-18 19:46:47,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-11-18 19:46:47,763 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2022-11-18 19:46:47,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2022-11-18 19:46:47,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:47,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2022-11-18 19:46:47,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 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) [2022-11-18 19:46:47,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:47,768 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:47,768 INFO L175 Difference]: Start difference. First operand has 117 places, 131 transitions, 1023 flow. Second operand 8 states and 609 transitions. [2022-11-18 19:46:47,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 169 transitions, 1639 flow [2022-11-18 19:46:47,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 169 transitions, 1558 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-18 19:46:47,789 INFO L231 Difference]: Finished difference. Result has 122 places, 144 transitions, 1334 flow [2022-11-18 19:46:47,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1334, PETRI_PLACES=122, PETRI_TRANSITIONS=144} [2022-11-18 19:46:47,791 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 43 predicate places. [2022-11-18 19:46:47,791 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 144 transitions, 1334 flow [2022-11-18 19:46:47,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:47,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:47,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:47,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:46:47,792 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:47,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:47,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1675123511, now seen corresponding path program 3 times [2022-11-18 19:46:47,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:47,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172041161] [2022-11-18 19:46:47,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:47,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:47,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:47,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172041161] [2022-11-18 19:46:47,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172041161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:47,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:47,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:47,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249510550] [2022-11-18 19:46:47,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:47,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:47,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:47,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:47,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:47,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-18 19:46:47,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 144 transitions, 1334 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:47,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:47,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-18 19:46:47,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:48,106 INFO L130 PetriNetUnfolder]: 181/521 cut-off events. [2022-11-18 19:46:48,106 INFO L131 PetriNetUnfolder]: For 2689/2712 co-relation queries the response was YES. [2022-11-18 19:46:48,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1961 conditions, 521 events. 181/521 cut-off events. For 2689/2712 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2822 event pairs, 50 based on Foata normal form. 21/530 useless extension candidates. Maximal degree in co-relation 1939. Up to 154 conditions per place. [2022-11-18 19:46:48,112 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 63 selfloop transitions, 53 changer transitions 2/166 dead transitions. [2022-11-18 19:46:48,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 166 transitions, 1659 flow [2022-11-18 19:46:48,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2022-11-18 19:46:48,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-11-18 19:46:48,115 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2022-11-18 19:46:48,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2022-11-18 19:46:48,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:48,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2022-11-18 19:46:48,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 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) [2022-11-18 19:46:48,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:48,120 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:48,120 INFO L175 Difference]: Start difference. First operand has 122 places, 144 transitions, 1334 flow. Second operand 8 states and 609 transitions. [2022-11-18 19:46:48,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 166 transitions, 1659 flow [2022-11-18 19:46:48,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 166 transitions, 1382 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-18 19:46:48,161 INFO L231 Difference]: Finished difference. Result has 121 places, 140 transitions, 1111 flow [2022-11-18 19:46:48,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1111, PETRI_PLACES=121, PETRI_TRANSITIONS=140} [2022-11-18 19:46:48,162 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 42 predicate places. [2022-11-18 19:46:48,162 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 140 transitions, 1111 flow [2022-11-18 19:46:48,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:48,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:48,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:48,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:46:48,163 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:48,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1771894146, now seen corresponding path program 3 times [2022-11-18 19:46:48,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:48,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755997758] [2022-11-18 19:46:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:48,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:48,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:48,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755997758] [2022-11-18 19:46:48,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755997758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:48,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:48,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:46:48,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929157520] [2022-11-18 19:46:48,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:48,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:46:48,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:48,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:46:48,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:46:48,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-18 19:46:48,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 140 transitions, 1111 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:48,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:48,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-18 19:46:48,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:48,664 INFO L130 PetriNetUnfolder]: 193/584 cut-off events. [2022-11-18 19:46:48,664 INFO L131 PetriNetUnfolder]: For 1822/1850 co-relation queries the response was YES. [2022-11-18 19:46:48,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 584 events. 193/584 cut-off events. For 1822/1850 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3291 event pairs, 28 based on Foata normal form. 26/597 useless extension candidates. Maximal degree in co-relation 2092. Up to 86 conditions per place. [2022-11-18 19:46:48,671 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 76 selfloop transitions, 65 changer transitions 1/184 dead transitions. [2022-11-18 19:46:48,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 184 transitions, 1681 flow [2022-11-18 19:46:48,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:46:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:46:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 722 transitions. [2022-11-18 19:46:48,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6697588126159555 [2022-11-18 19:46:48,674 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 722 transitions. [2022-11-18 19:46:48,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 722 transitions. [2022-11-18 19:46:48,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:48,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 722 transitions. [2022-11-18 19:46:48,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 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) [2022-11-18 19:46:48,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-11-18 19:46:48,681 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-11-18 19:46:48,681 INFO L175 Difference]: Start difference. First operand has 121 places, 140 transitions, 1111 flow. Second operand 11 states and 722 transitions. [2022-11-18 19:46:48,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 184 transitions, 1681 flow [2022-11-18 19:46:48,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 184 transitions, 1605 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:46:48,694 INFO L231 Difference]: Finished difference. Result has 129 places, 142 transitions, 1215 flow [2022-11-18 19:46:48,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1215, PETRI_PLACES=129, PETRI_TRANSITIONS=142} [2022-11-18 19:46:48,695 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 50 predicate places. [2022-11-18 19:46:48,695 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 142 transitions, 1215 flow [2022-11-18 19:46:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:48,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:48,696 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:48,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:46:48,696 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:48,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1580034405, now seen corresponding path program 1 times [2022-11-18 19:46:48,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:48,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762519746] [2022-11-18 19:46:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:48,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:48,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:48,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762519746] [2022-11-18 19:46:48,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762519746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:48,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:48,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:48,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529859815] [2022-11-18 19:46:48,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:48,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:48,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:48,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:48,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-18 19:46:48,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 142 transitions, 1215 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:48,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:48,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-18 19:46:48,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:48,980 INFO L130 PetriNetUnfolder]: 193/587 cut-off events. [2022-11-18 19:46:48,980 INFO L131 PetriNetUnfolder]: For 2199/2234 co-relation queries the response was YES. [2022-11-18 19:46:48,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 587 events. 193/587 cut-off events. For 2199/2234 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3370 event pairs, 64 based on Foata normal form. 25/598 useless extension candidates. Maximal degree in co-relation 2223. Up to 166 conditions per place. [2022-11-18 19:46:48,987 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 62 selfloop transitions, 52 changer transitions 0/162 dead transitions. [2022-11-18 19:46:48,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 162 transitions, 1579 flow [2022-11-18 19:46:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:46:48,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:46:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2022-11-18 19:46:48,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7874149659863946 [2022-11-18 19:46:48,989 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2022-11-18 19:46:48,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2022-11-18 19:46:48,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:48,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2022-11-18 19:46:48,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 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) [2022-11-18 19:46:48,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:48,993 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:48,993 INFO L175 Difference]: Start difference. First operand has 129 places, 142 transitions, 1215 flow. Second operand 6 states and 463 transitions. [2022-11-18 19:46:48,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 162 transitions, 1579 flow [2022-11-18 19:46:49,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 162 transitions, 1436 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-18 19:46:49,005 INFO L231 Difference]: Finished difference. Result has 128 places, 145 transitions, 1281 flow [2022-11-18 19:46:49,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1281, PETRI_PLACES=128, PETRI_TRANSITIONS=145} [2022-11-18 19:46:49,006 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 49 predicate places. [2022-11-18 19:46:49,006 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 145 transitions, 1281 flow [2022-11-18 19:46:49,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:49,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:49,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:49,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:46:49,007 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1292267632, now seen corresponding path program 1 times [2022-11-18 19:46:49,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:49,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94962808] [2022-11-18 19:46:49,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:49,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:49,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:49,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94962808] [2022-11-18 19:46:49,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94962808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:49,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:49,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:46:49,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402119527] [2022-11-18 19:46:49,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:49,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:46:49,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:49,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:46:49,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:46:49,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-18 19:46:49,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 145 transitions, 1281 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:49,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:49,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-18 19:46:49,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:49,530 INFO L130 PetriNetUnfolder]: 193/603 cut-off events. [2022-11-18 19:46:49,530 INFO L131 PetriNetUnfolder]: For 2222/2252 co-relation queries the response was YES. [2022-11-18 19:46:49,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 603 events. 193/603 cut-off events. For 2222/2252 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3562 event pairs, 34 based on Foata normal form. 28/618 useless extension candidates. Maximal degree in co-relation 2234. Up to 165 conditions per place. [2022-11-18 19:46:49,536 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 71 selfloop transitions, 60 changer transitions 2/175 dead transitions. [2022-11-18 19:46:49,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 175 transitions, 1737 flow [2022-11-18 19:46:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:46:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:46:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 591 transitions. [2022-11-18 19:46:49,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6700680272108843 [2022-11-18 19:46:49,539 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 591 transitions. [2022-11-18 19:46:49,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 591 transitions. [2022-11-18 19:46:49,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:49,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 591 transitions. [2022-11-18 19:46:49,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.66666666666667) internal successors, (591), 9 states have internal predecessors, (591), 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) [2022-11-18 19:46:49,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:49,543 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:49,543 INFO L175 Difference]: Start difference. First operand has 128 places, 145 transitions, 1281 flow. Second operand 9 states and 591 transitions. [2022-11-18 19:46:49,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 175 transitions, 1737 flow [2022-11-18 19:46:49,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 175 transitions, 1709 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:49,557 INFO L231 Difference]: Finished difference. Result has 137 places, 146 transitions, 1430 flow [2022-11-18 19:46:49,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=137, PETRI_TRANSITIONS=146} [2022-11-18 19:46:49,558 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 58 predicate places. [2022-11-18 19:46:49,558 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 146 transitions, 1430 flow [2022-11-18 19:46:49,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:49,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:49,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:49,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:46:49,559 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:49,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:49,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1657632491, now seen corresponding path program 2 times [2022-11-18 19:46:49,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:49,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743657497] [2022-11-18 19:46:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:49,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743657497] [2022-11-18 19:46:49,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743657497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:49,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:49,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68448497] [2022-11-18 19:46:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:49,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:49,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:49,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-18 19:46:49,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 146 transitions, 1430 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:49,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:49,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-18 19:46:49,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:49,802 INFO L130 PetriNetUnfolder]: 192/599 cut-off events. [2022-11-18 19:46:49,802 INFO L131 PetriNetUnfolder]: For 2979/2999 co-relation queries the response was YES. [2022-11-18 19:46:49,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 599 events. 192/599 cut-off events. For 2979/2999 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3501 event pairs, 58 based on Foata normal form. 18/602 useless extension candidates. Maximal degree in co-relation 2336. Up to 158 conditions per place. [2022-11-18 19:46:49,809 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 65 selfloop transitions, 50 changer transitions 0/163 dead transitions. [2022-11-18 19:46:49,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 163 transitions, 1791 flow [2022-11-18 19:46:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:46:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:46:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 458 transitions. [2022-11-18 19:46:49,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7789115646258503 [2022-11-18 19:46:49,811 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 458 transitions. [2022-11-18 19:46:49,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 458 transitions. [2022-11-18 19:46:49,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:49,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 458 transitions. [2022-11-18 19:46:49,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2022-11-18 19:46:49,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:49,815 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:49,815 INFO L175 Difference]: Start difference. First operand has 137 places, 146 transitions, 1430 flow. Second operand 6 states and 458 transitions. [2022-11-18 19:46:49,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 163 transitions, 1791 flow [2022-11-18 19:46:49,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 163 transitions, 1696 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-18 19:46:49,833 INFO L231 Difference]: Finished difference. Result has 138 places, 147 transitions, 1499 flow [2022-11-18 19:46:49,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1499, PETRI_PLACES=138, PETRI_TRANSITIONS=147} [2022-11-18 19:46:49,834 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 59 predicate places. [2022-11-18 19:46:49,834 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 147 transitions, 1499 flow [2022-11-18 19:46:49,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:49,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:49,835 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:49,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:46:49,835 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:49,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:49,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1674632891, now seen corresponding path program 3 times [2022-11-18 19:46:49,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:49,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434959727] [2022-11-18 19:46:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:49,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:49,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:49,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434959727] [2022-11-18 19:46:49,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434959727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:49,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:49,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:49,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55432505] [2022-11-18 19:46:49,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:49,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:49,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:49,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:49,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:49,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-18 19:46:49,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 147 transitions, 1499 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:49,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:49,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-18 19:46:49,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:50,100 INFO L130 PetriNetUnfolder]: 191/597 cut-off events. [2022-11-18 19:46:50,101 INFO L131 PetriNetUnfolder]: For 2888/2908 co-relation queries the response was YES. [2022-11-18 19:46:50,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 597 events. 191/597 cut-off events. For 2888/2908 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3484 event pairs, 58 based on Foata normal form. 18/600 useless extension candidates. Maximal degree in co-relation 2362. Up to 164 conditions per place. [2022-11-18 19:46:50,108 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 62 selfloop transitions, 50 changer transitions 1/161 dead transitions. [2022-11-18 19:46:50,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 161 transitions, 1808 flow [2022-11-18 19:46:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:46:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:46:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 460 transitions. [2022-11-18 19:46:50,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.782312925170068 [2022-11-18 19:46:50,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 460 transitions. [2022-11-18 19:46:50,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 460 transitions. [2022-11-18 19:46:50,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:50,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 460 transitions. [2022-11-18 19:46:50,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:50,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:50,114 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2022-11-18 19:46:50,114 INFO L175 Difference]: Start difference. First operand has 138 places, 147 transitions, 1499 flow. Second operand 6 states and 460 transitions. [2022-11-18 19:46:50,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 161 transitions, 1808 flow [2022-11-18 19:46:50,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 161 transitions, 1554 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-18 19:46:50,132 INFO L231 Difference]: Finished difference. Result has 132 places, 144 transitions, 1305 flow [2022-11-18 19:46:50,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1305, PETRI_PLACES=132, PETRI_TRANSITIONS=144} [2022-11-18 19:46:50,133 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 53 predicate places. [2022-11-18 19:46:50,133 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 144 transitions, 1305 flow [2022-11-18 19:46:50,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2022-11-18 19:46:50,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:50,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:50,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:46:50,134 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:50,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:50,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1674632892, now seen corresponding path program 2 times [2022-11-18 19:46:50,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:50,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314794936] [2022-11-18 19:46:50,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:50,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:50,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:50,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314794936] [2022-11-18 19:46:50,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314794936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:50,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:50,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:46:50,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828394170] [2022-11-18 19:46:50,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:50,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:46:50,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:50,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:46:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:46:50,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-18 19:46:50,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 144 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 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) [2022-11-18 19:46:50,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:50,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-18 19:46:50,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:50,700 INFO L130 PetriNetUnfolder]: 189/608 cut-off events. [2022-11-18 19:46:50,700 INFO L131 PetriNetUnfolder]: For 2165/2195 co-relation queries the response was YES. [2022-11-18 19:46:50,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 608 events. 189/608 cut-off events. For 2165/2195 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3638 event pairs, 25 based on Foata normal form. 29/624 useless extension candidates. Maximal degree in co-relation 2241. Up to 168 conditions per place. [2022-11-18 19:46:50,707 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 73 selfloop transitions, 62 changer transitions 7/184 dead transitions. [2022-11-18 19:46:50,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 184 transitions, 1868 flow [2022-11-18 19:46:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:46:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:46:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 721 transitions. [2022-11-18 19:46:50,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6688311688311688 [2022-11-18 19:46:50,709 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 721 transitions. [2022-11-18 19:46:50,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 721 transitions. [2022-11-18 19:46:50,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:50,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 721 transitions. [2022-11-18 19:46:50,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.54545454545455) internal successors, (721), 11 states have internal predecessors, (721), 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) [2022-11-18 19:46:50,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-11-18 19:46:50,714 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-11-18 19:46:50,715 INFO L175 Difference]: Start difference. First operand has 132 places, 144 transitions, 1305 flow. Second operand 11 states and 721 transitions. [2022-11-18 19:46:50,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 184 transitions, 1868 flow [2022-11-18 19:46:50,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 184 transitions, 1790 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:50,729 INFO L231 Difference]: Finished difference. Result has 140 places, 143 transitions, 1356 flow [2022-11-18 19:46:50,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1356, PETRI_PLACES=140, PETRI_TRANSITIONS=143} [2022-11-18 19:46:50,730 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 61 predicate places. [2022-11-18 19:46:50,730 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 1356 flow [2022-11-18 19:46:50,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 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) [2022-11-18 19:46:50,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:50,731 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:50,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:46:50,731 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1656969402, now seen corresponding path program 3 times [2022-11-18 19:46:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:50,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217985320] [2022-11-18 19:46:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:50,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:50,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:50,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217985320] [2022-11-18 19:46:50,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217985320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:50,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:50,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:46:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549972436] [2022-11-18 19:46:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:50,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:46:50,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:50,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:46:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:46:50,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-18 19:46:50,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 143 transitions, 1356 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:50,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:50,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-18 19:46:50,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:51,220 INFO L130 PetriNetUnfolder]: 189/635 cut-off events. [2022-11-18 19:46:51,221 INFO L131 PetriNetUnfolder]: For 2480/2510 co-relation queries the response was YES. [2022-11-18 19:46:51,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 635 events. 189/635 cut-off events. For 2480/2510 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3928 event pairs, 32 based on Foata normal form. 29/650 useless extension candidates. Maximal degree in co-relation 2403. Up to 152 conditions per place. [2022-11-18 19:46:51,227 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 76 selfloop transitions, 63 changer transitions 3/184 dead transitions. [2022-11-18 19:46:51,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 184 transitions, 1913 flow [2022-11-18 19:46:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:46:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:46:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 718 transitions. [2022-11-18 19:46:51,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6660482374768089 [2022-11-18 19:46:51,230 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 718 transitions. [2022-11-18 19:46:51,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 718 transitions. [2022-11-18 19:46:51,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:51,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 718 transitions. [2022-11-18 19:46:51,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 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) [2022-11-18 19:46:51,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-11-18 19:46:51,235 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-11-18 19:46:51,236 INFO L175 Difference]: Start difference. First operand has 140 places, 143 transitions, 1356 flow. Second operand 11 states and 718 transitions. [2022-11-18 19:46:51,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 184 transitions, 1913 flow [2022-11-18 19:46:51,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 184 transitions, 1766 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-18 19:46:51,250 INFO L231 Difference]: Finished difference. Result has 142 places, 145 transitions, 1372 flow [2022-11-18 19:46:51,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1372, PETRI_PLACES=142, PETRI_TRANSITIONS=145} [2022-11-18 19:46:51,251 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 63 predicate places. [2022-11-18 19:46:51,252 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 145 transitions, 1372 flow [2022-11-18 19:46:51,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 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) [2022-11-18 19:46:51,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:51,252 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:51,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:46:51,253 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1451190643, now seen corresponding path program 1 times [2022-11-18 19:46:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:51,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417832101] [2022-11-18 19:46:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:51,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:51,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:51,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417832101] [2022-11-18 19:46:51,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417832101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:51,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:51,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099664596] [2022-11-18 19:46:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:51,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:51,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:51,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:51,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:51,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2022-11-18 19:46:51,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 145 transitions, 1372 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2022-11-18 19:46:51,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:51,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2022-11-18 19:46:51,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:51,474 INFO L130 PetriNetUnfolder]: 113/472 cut-off events. [2022-11-18 19:46:51,474 INFO L131 PetriNetUnfolder]: For 2274/2314 co-relation queries the response was YES. [2022-11-18 19:46:51,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 472 events. 113/472 cut-off events. For 2274/2314 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2984 event pairs, 19 based on Foata normal form. 23/488 useless extension candidates. Maximal degree in co-relation 1696. Up to 193 conditions per place. [2022-11-18 19:46:51,479 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 32 selfloop transitions, 56 changer transitions 0/155 dead transitions. [2022-11-18 19:46:51,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 155 transitions, 1672 flow [2022-11-18 19:46:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:46:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 525 transitions. [2022-11-18 19:46:51,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7653061224489796 [2022-11-18 19:46:51,481 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 525 transitions. [2022-11-18 19:46:51,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 525 transitions. [2022-11-18 19:46:51,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:51,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 525 transitions. [2022-11-18 19:46:51,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-11-18 19:46:51,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:51,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:51,485 INFO L175 Difference]: Start difference. First operand has 142 places, 145 transitions, 1372 flow. Second operand 7 states and 525 transitions. [2022-11-18 19:46:51,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 155 transitions, 1672 flow [2022-11-18 19:46:51,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 155 transitions, 1512 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-18 19:46:51,497 INFO L231 Difference]: Finished difference. Result has 137 places, 149 transitions, 1466 flow [2022-11-18 19:46:51,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1466, PETRI_PLACES=137, PETRI_TRANSITIONS=149} [2022-11-18 19:46:51,498 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 58 predicate places. [2022-11-18 19:46:51,498 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 149 transitions, 1466 flow [2022-11-18 19:46:51,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2022-11-18 19:46:51,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:51,499 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:51,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:46:51,499 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:51,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:51,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2102272510, now seen corresponding path program 1 times [2022-11-18 19:46:51,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:51,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114381524] [2022-11-18 19:46:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:51,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:51,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:51,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114381524] [2022-11-18 19:46:51,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114381524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:51,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876753852] [2022-11-18 19:46:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:51,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:51,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:51,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:51,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:46:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:51,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:46:51,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:51,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:51,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876753852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:51,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:51,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-11-18 19:46:51,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126721706] [2022-11-18 19:46:51,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:51,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:51,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:51,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:51,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:51,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 149 transitions, 1466 flow. Second operand has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 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) [2022-11-18 19:46:51,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:51,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:51,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:52,155 INFO L130 PetriNetUnfolder]: 208/699 cut-off events. [2022-11-18 19:46:52,155 INFO L131 PetriNetUnfolder]: For 2751/2781 co-relation queries the response was YES. [2022-11-18 19:46:52,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 699 events. 208/699 cut-off events. For 2751/2781 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4535 event pairs, 22 based on Foata normal form. 22/712 useless extension candidates. Maximal degree in co-relation 2637. Up to 103 conditions per place. [2022-11-18 19:46:52,165 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 116 selfloop transitions, 57 changer transitions 0/220 dead transitions. [2022-11-18 19:46:52,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 220 transitions, 2375 flow [2022-11-18 19:46:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:46:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:46:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 684 transitions. [2022-11-18 19:46:52,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7755102040816326 [2022-11-18 19:46:52,167 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 684 transitions. [2022-11-18 19:46:52,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 684 transitions. [2022-11-18 19:46:52,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:52,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 684 transitions. [2022-11-18 19:46:52,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.0) internal successors, (684), 9 states have internal predecessors, (684), 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) [2022-11-18 19:46:52,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:52,172 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:52,172 INFO L175 Difference]: Start difference. First operand has 137 places, 149 transitions, 1466 flow. Second operand 9 states and 684 transitions. [2022-11-18 19:46:52,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 220 transitions, 2375 flow [2022-11-18 19:46:52,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 220 transitions, 2325 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:52,193 INFO L231 Difference]: Finished difference. Result has 149 places, 185 transitions, 1959 flow [2022-11-18 19:46:52,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1959, PETRI_PLACES=149, PETRI_TRANSITIONS=185} [2022-11-18 19:46:52,194 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 70 predicate places. [2022-11-18 19:46:52,195 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 185 transitions, 1959 flow [2022-11-18 19:46:52,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 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) [2022-11-18 19:46:52,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:52,195 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:52,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:46:52,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:52,402 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:52,402 INFO L85 PathProgramCache]: Analyzing trace with hash 480562596, now seen corresponding path program 1 times [2022-11-18 19:46:52,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:52,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425241688] [2022-11-18 19:46:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:52,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:52,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:52,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425241688] [2022-11-18 19:46:52,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425241688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:52,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:52,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:52,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540912934] [2022-11-18 19:46:52,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:52,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:52,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:52,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:52,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:52,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:52,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 185 transitions, 1959 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:52,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:52,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:52,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:52,790 INFO L130 PetriNetUnfolder]: 243/798 cut-off events. [2022-11-18 19:46:52,790 INFO L131 PetriNetUnfolder]: For 4875/4912 co-relation queries the response was YES. [2022-11-18 19:46:52,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 798 events. 243/798 cut-off events. For 4875/4912 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5238 event pairs, 23 based on Foata normal form. 24/807 useless extension candidates. Maximal degree in co-relation 3372. Up to 125 conditions per place. [2022-11-18 19:46:52,801 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 135 selfloop transitions, 86 changer transitions 2/270 dead transitions. [2022-11-18 19:46:52,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 270 transitions, 3263 flow [2022-11-18 19:46:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:46:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:46:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 682 transitions. [2022-11-18 19:46:52,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7732426303854876 [2022-11-18 19:46:52,805 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 682 transitions. [2022-11-18 19:46:52,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 682 transitions. [2022-11-18 19:46:52,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:52,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 682 transitions. [2022-11-18 19:46:52,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.77777777777777) internal successors, (682), 9 states have internal predecessors, (682), 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) [2022-11-18 19:46:52,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:52,819 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:52,821 INFO L175 Difference]: Start difference. First operand has 149 places, 185 transitions, 1959 flow. Second operand 9 states and 682 transitions. [2022-11-18 19:46:52,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 270 transitions, 3263 flow [2022-11-18 19:46:52,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 270 transitions, 3192 flow, removed 28 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:52,860 INFO L231 Difference]: Finished difference. Result has 161 places, 230 transitions, 2752 flow [2022-11-18 19:46:52,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2752, PETRI_PLACES=161, PETRI_TRANSITIONS=230} [2022-11-18 19:46:52,863 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 82 predicate places. [2022-11-18 19:46:52,863 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 230 transitions, 2752 flow [2022-11-18 19:46:52,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:52,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:52,865 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:52,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 19:46:52,865 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:52,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1551770848, now seen corresponding path program 2 times [2022-11-18 19:46:52,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:52,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763798688] [2022-11-18 19:46:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:52,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:52,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:52,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763798688] [2022-11-18 19:46:52,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763798688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:52,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:52,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:52,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880760896] [2022-11-18 19:46:52,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:52,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:52,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:52,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:52,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 230 transitions, 2752 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:52,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:52,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:52,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:53,202 INFO L130 PetriNetUnfolder]: 240/794 cut-off events. [2022-11-18 19:46:53,203 INFO L131 PetriNetUnfolder]: For 6492/6554 co-relation queries the response was YES. [2022-11-18 19:46:53,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3718 conditions, 794 events. 240/794 cut-off events. For 6492/6554 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5211 event pairs, 42 based on Foata normal form. 29/813 useless extension candidates. Maximal degree in co-relation 3679. Up to 179 conditions per place. [2022-11-18 19:46:53,213 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 177 selfloop transitions, 40 changer transitions 10/274 dead transitions. [2022-11-18 19:46:53,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 274 transitions, 3668 flow [2022-11-18 19:46:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:46:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2022-11-18 19:46:53,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7842565597667639 [2022-11-18 19:46:53,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2022-11-18 19:46:53,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2022-11-18 19:46:53,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:53,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2022-11-18 19:46:53,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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) [2022-11-18 19:46:53,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:53,219 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:53,219 INFO L175 Difference]: Start difference. First operand has 161 places, 230 transitions, 2752 flow. Second operand 7 states and 538 transitions. [2022-11-18 19:46:53,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 274 transitions, 3668 flow [2022-11-18 19:46:53,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 274 transitions, 3615 flow, removed 19 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:53,298 INFO L231 Difference]: Finished difference. Result has 168 places, 235 transitions, 2866 flow [2022-11-18 19:46:53,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=2691, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2866, PETRI_PLACES=168, PETRI_TRANSITIONS=235} [2022-11-18 19:46:53,299 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 89 predicate places. [2022-11-18 19:46:53,299 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 235 transitions, 2866 flow [2022-11-18 19:46:53,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:53,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:53,300 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:53,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 19:46:53,301 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash -441433712, now seen corresponding path program 3 times [2022-11-18 19:46:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:53,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663365636] [2022-11-18 19:46:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:53,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:53,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663365636] [2022-11-18 19:46:53,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663365636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:53,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:53,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:53,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050960886] [2022-11-18 19:46:53,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:53,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:53,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:53,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:53,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 235 transitions, 2866 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:53,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:53,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:53,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:53,668 INFO L130 PetriNetUnfolder]: 252/867 cut-off events. [2022-11-18 19:46:53,668 INFO L131 PetriNetUnfolder]: For 7887/7961 co-relation queries the response was YES. [2022-11-18 19:46:53,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 867 events. 252/867 cut-off events. For 7887/7961 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5905 event pairs, 44 based on Foata normal form. 46/904 useless extension candidates. Maximal degree in co-relation 4076. Up to 211 conditions per place. [2022-11-18 19:46:53,687 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 189 selfloop transitions, 79 changer transitions 2/317 dead transitions. [2022-11-18 19:46:53,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 317 transitions, 4410 flow [2022-11-18 19:46:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:53,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 625 transitions. [2022-11-18 19:46:53,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971938775510204 [2022-11-18 19:46:53,690 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 625 transitions. [2022-11-18 19:46:53,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 625 transitions. [2022-11-18 19:46:53,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:53,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 625 transitions. [2022-11-18 19:46:53,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.125) internal successors, (625), 8 states have internal predecessors, (625), 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) [2022-11-18 19:46:53,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:53,695 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:53,695 INFO L175 Difference]: Start difference. First operand has 168 places, 235 transitions, 2866 flow. Second operand 8 states and 625 transitions. [2022-11-18 19:46:53,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 317 transitions, 4410 flow [2022-11-18 19:46:53,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 317 transitions, 4277 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:53,742 INFO L231 Difference]: Finished difference. Result has 176 places, 258 transitions, 3402 flow [2022-11-18 19:46:53,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3402, PETRI_PLACES=176, PETRI_TRANSITIONS=258} [2022-11-18 19:46:53,743 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 97 predicate places. [2022-11-18 19:46:53,743 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 258 transitions, 3402 flow [2022-11-18 19:46:53,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:53,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:53,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:53,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 19:46:53,745 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:53,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1631662016, now seen corresponding path program 1 times [2022-11-18 19:46:53,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:53,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807192064] [2022-11-18 19:46:53,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:53,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:53,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:53,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807192064] [2022-11-18 19:46:53,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807192064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:53,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:53,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31804905] [2022-11-18 19:46:53,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:53,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:53,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:53,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:53,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:53,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:53,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 258 transitions, 3402 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:53,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:53,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:53,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:54,181 INFO L130 PetriNetUnfolder]: 278/997 cut-off events. [2022-11-18 19:46:54,182 INFO L131 PetriNetUnfolder]: For 9393/9482 co-relation queries the response was YES. [2022-11-18 19:46:54,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4781 conditions, 997 events. 278/997 cut-off events. For 9393/9482 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7281 event pairs, 37 based on Foata normal form. 41/1027 useless extension candidates. Maximal degree in co-relation 4737. Up to 205 conditions per place. [2022-11-18 19:46:54,194 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 190 selfloop transitions, 92 changer transitions 2/331 dead transitions. [2022-11-18 19:46:54,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 331 transitions, 4799 flow [2022-11-18 19:46:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 627 transitions. [2022-11-18 19:46:54,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7997448979591837 [2022-11-18 19:46:54,197 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 627 transitions. [2022-11-18 19:46:54,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 627 transitions. [2022-11-18 19:46:54,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:54,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 627 transitions. [2022-11-18 19:46:54,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 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) [2022-11-18 19:46:54,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:54,202 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:54,203 INFO L175 Difference]: Start difference. First operand has 176 places, 258 transitions, 3402 flow. Second operand 8 states and 627 transitions. [2022-11-18 19:46:54,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 331 transitions, 4799 flow [2022-11-18 19:46:54,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 331 transitions, 4641 flow, removed 30 selfloop flow, removed 2 redundant places. [2022-11-18 19:46:54,259 INFO L231 Difference]: Finished difference. Result has 187 places, 276 transitions, 3870 flow [2022-11-18 19:46:54,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3870, PETRI_PLACES=187, PETRI_TRANSITIONS=276} [2022-11-18 19:46:54,264 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 108 predicate places. [2022-11-18 19:46:54,265 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 276 transitions, 3870 flow [2022-11-18 19:46:54,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:54,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:54,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:54,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 19:46:54,266 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:54,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:54,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1711036856, now seen corresponding path program 2 times [2022-11-18 19:46:54,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:54,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423358956] [2022-11-18 19:46:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:54,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:54,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423358956] [2022-11-18 19:46:54,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423358956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:54,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:54,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:54,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773154092] [2022-11-18 19:46:54,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:54,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:54,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:54,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:54,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:54,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:54,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 276 transitions, 3870 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:54,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:54,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:54,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:54,690 INFO L130 PetriNetUnfolder]: 272/964 cut-off events. [2022-11-18 19:46:54,690 INFO L131 PetriNetUnfolder]: For 10232/10303 co-relation queries the response was YES. [2022-11-18 19:46:54,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4826 conditions, 964 events. 272/964 cut-off events. For 10232/10303 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6958 event pairs, 44 based on Foata normal form. 35/988 useless extension candidates. Maximal degree in co-relation 4778. Up to 184 conditions per place. [2022-11-18 19:46:54,706 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 197 selfloop transitions, 66 changer transitions 6/316 dead transitions. [2022-11-18 19:46:54,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 316 transitions, 4791 flow [2022-11-18 19:46:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 617 transitions. [2022-11-18 19:46:54,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7869897959183674 [2022-11-18 19:46:54,709 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 617 transitions. [2022-11-18 19:46:54,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 617 transitions. [2022-11-18 19:46:54,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:54,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 617 transitions. [2022-11-18 19:46:54,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.125) internal successors, (617), 8 states have internal predecessors, (617), 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) [2022-11-18 19:46:54,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:54,713 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:54,713 INFO L175 Difference]: Start difference. First operand has 187 places, 276 transitions, 3870 flow. Second operand 8 states and 617 transitions. [2022-11-18 19:46:54,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 316 transitions, 4791 flow [2022-11-18 19:46:54,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 316 transitions, 4770 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:54,776 INFO L231 Difference]: Finished difference. Result has 197 places, 276 transitions, 4041 flow [2022-11-18 19:46:54,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4041, PETRI_PLACES=197, PETRI_TRANSITIONS=276} [2022-11-18 19:46:54,779 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 118 predicate places. [2022-11-18 19:46:54,780 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 276 transitions, 4041 flow [2022-11-18 19:46:54,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:54,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:54,780 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:54,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 19:46:54,781 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1058665886, now seen corresponding path program 4 times [2022-11-18 19:46:54,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:54,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45533101] [2022-11-18 19:46:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:54,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:54,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45533101] [2022-11-18 19:46:54,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45533101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:54,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:54,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:54,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539707773] [2022-11-18 19:46:54,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:54,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:54,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:54,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:54,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:54,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 276 transitions, 4041 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:54,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:54,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:54,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:55,204 INFO L130 PetriNetUnfolder]: 256/897 cut-off events. [2022-11-18 19:46:55,204 INFO L131 PetriNetUnfolder]: For 10793/10858 co-relation queries the response was YES. [2022-11-18 19:46:55,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4641 conditions, 897 events. 256/897 cut-off events. For 10793/10858 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6218 event pairs, 40 based on Foata normal form. 22/909 useless extension candidates. Maximal degree in co-relation 4589. Up to 221 conditions per place. [2022-11-18 19:46:55,215 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 194 selfloop transitions, 65 changer transitions 3/309 dead transitions. [2022-11-18 19:46:55,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 309 transitions, 4853 flow [2022-11-18 19:46:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 612 transitions. [2022-11-18 19:46:55,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7806122448979592 [2022-11-18 19:46:55,218 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 612 transitions. [2022-11-18 19:46:55,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 612 transitions. [2022-11-18 19:46:55,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:55,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 612 transitions. [2022-11-18 19:46:55,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2022-11-18 19:46:55,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:55,223 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:55,223 INFO L175 Difference]: Start difference. First operand has 197 places, 276 transitions, 4041 flow. Second operand 8 states and 612 transitions. [2022-11-18 19:46:55,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 309 transitions, 4853 flow [2022-11-18 19:46:55,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 309 transitions, 4790 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-18 19:46:55,289 INFO L231 Difference]: Finished difference. Result has 203 places, 272 transitions, 4113 flow [2022-11-18 19:46:55,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3841, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4113, PETRI_PLACES=203, PETRI_TRANSITIONS=272} [2022-11-18 19:46:55,291 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 124 predicate places. [2022-11-18 19:46:55,291 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 272 transitions, 4113 flow [2022-11-18 19:46:55,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:55,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:55,292 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:55,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 19:46:55,293 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1255129484, now seen corresponding path program 5 times [2022-11-18 19:46:55,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:55,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197615036] [2022-11-18 19:46:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:55,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:55,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:55,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197615036] [2022-11-18 19:46:55,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197615036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:55,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:55,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:55,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461915335] [2022-11-18 19:46:55,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:55,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:55,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:55,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:55,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:55,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 272 transitions, 4113 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:55,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:55,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:55,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:55,731 INFO L130 PetriNetUnfolder]: 241/827 cut-off events. [2022-11-18 19:46:55,731 INFO L131 PetriNetUnfolder]: For 11602/11666 co-relation queries the response was YES. [2022-11-18 19:46:55,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4473 conditions, 827 events. 241/827 cut-off events. For 11602/11666 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5463 event pairs, 35 based on Foata normal form. 38/854 useless extension candidates. Maximal degree in co-relation 4420. Up to 167 conditions per place. [2022-11-18 19:46:55,744 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 165 selfloop transitions, 98 changer transitions 3/313 dead transitions. [2022-11-18 19:46:55,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 313 transitions, 5008 flow [2022-11-18 19:46:55,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:55,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 627 transitions. [2022-11-18 19:46:55,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7997448979591837 [2022-11-18 19:46:55,752 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 627 transitions. [2022-11-18 19:46:55,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 627 transitions. [2022-11-18 19:46:55,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:55,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 627 transitions. [2022-11-18 19:46:55,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 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) [2022-11-18 19:46:55,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:55,760 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:55,761 INFO L175 Difference]: Start difference. First operand has 203 places, 272 transitions, 4113 flow. Second operand 8 states and 627 transitions. [2022-11-18 19:46:55,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 313 transitions, 5008 flow [2022-11-18 19:46:55,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 313 transitions, 4908 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-18 19:46:55,831 INFO L231 Difference]: Finished difference. Result has 203 places, 266 transitions, 4174 flow [2022-11-18 19:46:55,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3900, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4174, PETRI_PLACES=203, PETRI_TRANSITIONS=266} [2022-11-18 19:46:55,832 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 124 predicate places. [2022-11-18 19:46:55,832 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 266 transitions, 4174 flow [2022-11-18 19:46:55,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:55,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:55,833 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:55,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 19:46:55,833 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:55,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash 510391134, now seen corresponding path program 3 times [2022-11-18 19:46:55,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:55,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069482606] [2022-11-18 19:46:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:55,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:55,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:55,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069482606] [2022-11-18 19:46:55,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069482606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:55,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:55,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:55,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785458654] [2022-11-18 19:46:55,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:55,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:55,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:55,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 266 transitions, 4174 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:55,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:55,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:55,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:56,245 INFO L130 PetriNetUnfolder]: 230/796 cut-off events. [2022-11-18 19:46:56,245 INFO L131 PetriNetUnfolder]: For 12087/12136 co-relation queries the response was YES. [2022-11-18 19:46:56,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 796 events. 230/796 cut-off events. For 12087/12136 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5213 event pairs, 35 based on Foata normal form. 24/808 useless extension candidates. Maximal degree in co-relation 4328. Up to 232 conditions per place. [2022-11-18 19:46:56,255 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 168 selfloop transitions, 80 changer transitions 1/296 dead transitions. [2022-11-18 19:46:56,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 296 transitions, 4870 flow [2022-11-18 19:46:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 621 transitions. [2022-11-18 19:46:56,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7920918367346939 [2022-11-18 19:46:56,260 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 621 transitions. [2022-11-18 19:46:56,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 621 transitions. [2022-11-18 19:46:56,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:56,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 621 transitions. [2022-11-18 19:46:56,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.625) internal successors, (621), 8 states have internal predecessors, (621), 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) [2022-11-18 19:46:56,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:56,264 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:56,265 INFO L175 Difference]: Start difference. First operand has 203 places, 266 transitions, 4174 flow. Second operand 8 states and 621 transitions. [2022-11-18 19:46:56,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 296 transitions, 4870 flow [2022-11-18 19:46:56,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 296 transitions, 4839 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:56,329 INFO L231 Difference]: Finished difference. Result has 208 places, 262 transitions, 4253 flow [2022-11-18 19:46:56,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3964, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4253, PETRI_PLACES=208, PETRI_TRANSITIONS=262} [2022-11-18 19:46:56,331 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 129 predicate places. [2022-11-18 19:46:56,331 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 262 transitions, 4253 flow [2022-11-18 19:46:56,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:56,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:56,332 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:56,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 19:46:56,332 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:56,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash 623223244, now seen corresponding path program 4 times [2022-11-18 19:46:56,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:56,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98572609] [2022-11-18 19:46:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:56,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:56,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:56,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98572609] [2022-11-18 19:46:56,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98572609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:56,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:56,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:56,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016971769] [2022-11-18 19:46:56,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:56,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:56,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:56,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:56,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 262 transitions, 4253 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:56,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:56,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:56,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:56,715 INFO L130 PetriNetUnfolder]: 228/793 cut-off events. [2022-11-18 19:46:56,715 INFO L131 PetriNetUnfolder]: For 12945/12977 co-relation queries the response was YES. [2022-11-18 19:46:56,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4501 conditions, 793 events. 228/793 cut-off events. For 12945/12977 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5236 event pairs, 45 based on Foata normal form. 8/789 useless extension candidates. Maximal degree in co-relation 4451. Up to 196 conditions per place. [2022-11-18 19:46:56,726 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 189 selfloop transitions, 38 changer transitions 7/281 dead transitions. [2022-11-18 19:46:56,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 281 transitions, 4852 flow [2022-11-18 19:46:56,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:46:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 534 transitions. [2022-11-18 19:46:56,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7784256559766763 [2022-11-18 19:46:56,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 534 transitions. [2022-11-18 19:46:56,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 534 transitions. [2022-11-18 19:46:56,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:56,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 534 transitions. [2022-11-18 19:46:56,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 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) [2022-11-18 19:46:56,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:56,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:56,733 INFO L175 Difference]: Start difference. First operand has 208 places, 262 transitions, 4253 flow. Second operand 7 states and 534 transitions. [2022-11-18 19:46:56,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 281 transitions, 4852 flow [2022-11-18 19:46:56,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 281 transitions, 4754 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:56,802 INFO L231 Difference]: Finished difference. Result has 212 places, 257 transitions, 4118 flow [2022-11-18 19:46:56,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=4129, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4118, PETRI_PLACES=212, PETRI_TRANSITIONS=257} [2022-11-18 19:46:56,803 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 133 predicate places. [2022-11-18 19:46:56,804 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 257 transitions, 4118 flow [2022-11-18 19:46:56,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:56,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:56,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:56,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 19:46:56,805 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash 966771398, now seen corresponding path program 5 times [2022-11-18 19:46:56,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:56,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584061284] [2022-11-18 19:46:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:56,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:56,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:56,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584061284] [2022-11-18 19:46:56,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584061284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:56,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:56,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:56,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685026514] [2022-11-18 19:46:56,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:56,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:56,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:56,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:56,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 257 transitions, 4118 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:56,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:56,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:56,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:57,181 INFO L130 PetriNetUnfolder]: 214/730 cut-off events. [2022-11-18 19:46:57,182 INFO L131 PetriNetUnfolder]: For 11692/11724 co-relation queries the response was YES. [2022-11-18 19:46:57,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 730 events. 214/730 cut-off events. For 11692/11724 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4616 event pairs, 37 based on Foata normal form. 11/731 useless extension candidates. Maximal degree in co-relation 4020. Up to 196 conditions per place. [2022-11-18 19:46:57,191 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 160 selfloop transitions, 53 changer transitions 2/262 dead transitions. [2022-11-18 19:46:57,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 262 transitions, 4356 flow [2022-11-18 19:46:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-11-18 19:46:57,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7742346938775511 [2022-11-18 19:46:57,193 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-11-18 19:46:57,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-11-18 19:46:57,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:57,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-11-18 19:46:57,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 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) [2022-11-18 19:46:57,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:57,197 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 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) [2022-11-18 19:46:57,197 INFO L175 Difference]: Start difference. First operand has 212 places, 257 transitions, 4118 flow. Second operand 8 states and 607 transitions. [2022-11-18 19:46:57,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 262 transitions, 4356 flow [2022-11-18 19:46:57,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 262 transitions, 4208 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-18 19:46:57,255 INFO L231 Difference]: Finished difference. Result has 211 places, 237 transitions, 3676 flow [2022-11-18 19:46:57,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3676, PETRI_PLACES=211, PETRI_TRANSITIONS=237} [2022-11-18 19:46:57,256 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 132 predicate places. [2022-11-18 19:46:57,256 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 237 transitions, 3676 flow [2022-11-18 19:46:57,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:57,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:57,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:57,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 19:46:57,257 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:57,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1619142368, now seen corresponding path program 6 times [2022-11-18 19:46:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:57,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843059489] [2022-11-18 19:46:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:57,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:57,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843059489] [2022-11-18 19:46:57,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843059489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:57,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:57,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:57,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993234415] [2022-11-18 19:46:57,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:57,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:57,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:46:57,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 237 transitions, 3676 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:57,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:57,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:46:57,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:57,569 INFO L130 PetriNetUnfolder]: 196/657 cut-off events. [2022-11-18 19:46:57,569 INFO L131 PetriNetUnfolder]: For 10407/10437 co-relation queries the response was YES. [2022-11-18 19:46:57,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 657 events. 196/657 cut-off events. For 10407/10437 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3894 event pairs, 38 based on Foata normal form. 8/654 useless extension candidates. Maximal degree in co-relation 3608. Up to 186 conditions per place. [2022-11-18 19:46:57,578 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 134 selfloop transitions, 52 changer transitions 3/236 dead transitions. [2022-11-18 19:46:57,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 236 transitions, 3808 flow [2022-11-18 19:46:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:46:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 530 transitions. [2022-11-18 19:46:57,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7725947521865889 [2022-11-18 19:46:57,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 530 transitions. [2022-11-18 19:46:57,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 530 transitions. [2022-11-18 19:46:57,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:57,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 530 transitions. [2022-11-18 19:46:57,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 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) [2022-11-18 19:46:57,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:57,589 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-11-18 19:46:57,589 INFO L175 Difference]: Start difference. First operand has 211 places, 237 transitions, 3676 flow. Second operand 7 states and 530 transitions. [2022-11-18 19:46:57,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 236 transitions, 3808 flow [2022-11-18 19:46:57,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 236 transitions, 3638 flow, removed 11 selfloop flow, removed 10 redundant places. [2022-11-18 19:46:57,636 INFO L231 Difference]: Finished difference. Result has 202 places, 217 transitions, 3206 flow [2022-11-18 19:46:57,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3141, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3206, PETRI_PLACES=202, PETRI_TRANSITIONS=217} [2022-11-18 19:46:57,637 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 123 predicate places. [2022-11-18 19:46:57,638 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 217 transitions, 3206 flow [2022-11-18 19:46:57,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2022-11-18 19:46:57,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:57,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:57,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 19:46:57,639 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:46:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1044760082, now seen corresponding path program 1 times [2022-11-18 19:46:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:57,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055686653] [2022-11-18 19:46:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:57,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:57,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055686653] [2022-11-18 19:46:57,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055686653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:57,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714111282] [2022-11-18 19:46:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:57,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:57,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:57,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:57,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:46:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:46:57,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:58,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:58,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714111282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:58,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:58,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-18 19:46:58,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2266537] [2022-11-18 19:46:58,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:58,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:46:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:46:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:46:58,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-18 19:46:58,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 217 transitions, 3206 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 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) [2022-11-18 19:46:58,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:58,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-18 19:46:58,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:08,941 INFO L130 PetriNetUnfolder]: 2355/5411 cut-off events. [2022-11-18 19:47:08,942 INFO L131 PetriNetUnfolder]: For 68230/68230 co-relation queries the response was YES. [2022-11-18 19:47:08,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28722 conditions, 5411 events. 2355/5411 cut-off events. For 68230/68230 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 41647 event pairs, 108 based on Foata normal form. 30/5428 useless extension candidates. Maximal degree in co-relation 28682. Up to 549 conditions per place. [2022-11-18 19:47:09,018 INFO L137 encePairwiseOnDemand]: 81/98 looper letters, 696 selfloop transitions, 993 changer transitions 20/1747 dead transitions. [2022-11-18 19:47:09,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1747 transitions, 25220 flow [2022-11-18 19:47:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-11-18 19:47:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2022-11-18 19:47:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 13688 transitions. [2022-11-18 19:47:09,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6263384277477807 [2022-11-18 19:47:09,049 INFO L72 ComplementDD]: Start complementDD. Operand 223 states and 13688 transitions. [2022-11-18 19:47:09,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 13688 transitions. [2022-11-18 19:47:09,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:09,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 223 states and 13688 transitions. [2022-11-18 19:47:09,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 224 states, 223 states have (on average 61.38116591928251) internal successors, (13688), 223 states have internal predecessors, (13688), 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) [2022-11-18 19:47:09,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 224 states, 224 states have (on average 98.0) internal successors, (21952), 224 states have internal predecessors, (21952), 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) [2022-11-18 19:47:09,127 INFO L81 ComplementDD]: Finished complementDD. Result has 224 states, 224 states have (on average 98.0) internal successors, (21952), 224 states have internal predecessors, (21952), 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) [2022-11-18 19:47:09,127 INFO L175 Difference]: Start difference. First operand has 202 places, 217 transitions, 3206 flow. Second operand 223 states and 13688 transitions. [2022-11-18 19:47:09,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1747 transitions, 25220 flow [2022-11-18 19:47:09,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 1747 transitions, 24160 flow, removed 16 selfloop flow, removed 12 redundant places. [2022-11-18 19:47:09,651 INFO L231 Difference]: Finished difference. Result has 446 places, 1205 transitions, 20464 flow [2022-11-18 19:47:09,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=223, PETRI_FLOW=20464, PETRI_PLACES=446, PETRI_TRANSITIONS=1205} [2022-11-18 19:47:09,652 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 367 predicate places. [2022-11-18 19:47:09,653 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 1205 transitions, 20464 flow [2022-11-18 19:47:09,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 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) [2022-11-18 19:47:09,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:09,654 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:09,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:09,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 19:47:09,860 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:47:09,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1061656894, now seen corresponding path program 1 times [2022-11-18 19:47:09,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:09,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401678255] [2022-11-18 19:47:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:10,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:10,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401678255] [2022-11-18 19:47:10,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401678255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:10,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916582479] [2022-11-18 19:47:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:10,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:10,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:10,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:10,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:47:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:47:10,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:10,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:10,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916582479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:10,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:10,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-18 19:47:10,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131067600] [2022-11-18 19:47:10,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:47:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:47:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:47:10,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-18 19:47:10,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1205 transitions, 20464 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 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) [2022-11-18 19:47:10,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:10,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-18 19:47:10,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:18,870 INFO L130 PetriNetUnfolder]: 2608/5908 cut-off events. [2022-11-18 19:47:18,871 INFO L131 PetriNetUnfolder]: For 83342/83342 co-relation queries the response was YES. [2022-11-18 19:47:18,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34764 conditions, 5908 events. 2608/5908 cut-off events. For 83342/83342 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 46250 event pairs, 241 based on Foata normal form. 9/5897 useless extension candidates. Maximal degree in co-relation 34688. Up to 612 conditions per place. [2022-11-18 19:47:19,060 INFO L137 encePairwiseOnDemand]: 82/98 looper letters, 718 selfloop transitions, 993 changer transitions 24/1773 dead transitions. [2022-11-18 19:47:19,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1773 transitions, 29440 flow [2022-11-18 19:47:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-11-18 19:47:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2022-11-18 19:47:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 9179 transitions. [2022-11-18 19:47:19,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6286125188330366 [2022-11-18 19:47:19,073 INFO L72 ComplementDD]: Start complementDD. Operand 149 states and 9179 transitions. [2022-11-18 19:47:19,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149 states and 9179 transitions. [2022-11-18 19:47:19,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:19,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 149 states and 9179 transitions. [2022-11-18 19:47:19,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 150 states, 149 states have (on average 61.604026845637584) internal successors, (9179), 149 states have internal predecessors, (9179), 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) [2022-11-18 19:47:19,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 150 states, 150 states have (on average 98.0) internal successors, (14700), 150 states have internal predecessors, (14700), 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) [2022-11-18 19:47:19,121 INFO L81 ComplementDD]: Finished complementDD. Result has 150 states, 150 states have (on average 98.0) internal successors, (14700), 150 states have internal predecessors, (14700), 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) [2022-11-18 19:47:19,121 INFO L175 Difference]: Start difference. First operand has 446 places, 1205 transitions, 20464 flow. Second operand 149 states and 9179 transitions. [2022-11-18 19:47:19,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1773 transitions, 29440 flow [2022-11-18 19:47:19,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 1773 transitions, 28701 flow, removed 149 selfloop flow, removed 5 redundant places. [2022-11-18 19:47:19,947 INFO L231 Difference]: Finished difference. Result has 629 places, 1393 transitions, 25389 flow [2022-11-18 19:47:19,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=19870, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=795, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=149, PETRI_FLOW=25389, PETRI_PLACES=629, PETRI_TRANSITIONS=1393} [2022-11-18 19:47:19,948 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 550 predicate places. [2022-11-18 19:47:19,948 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 1393 transitions, 25389 flow [2022-11-18 19:47:19,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 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) [2022-11-18 19:47:19,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:19,949 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:19,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:20,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:20,150 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:47:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1870779784, now seen corresponding path program 2 times [2022-11-18 19:47:20,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:20,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603683428] [2022-11-18 19:47:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:20,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:20,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:20,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603683428] [2022-11-18 19:47:20,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603683428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:20,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373473618] [2022-11-18 19:47:20,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:47:20,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:20,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:20,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:20,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:47:20,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:47:20,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:20,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:47:20,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:20,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:20,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373473618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:20,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:20,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-18 19:47:20,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045188390] [2022-11-18 19:47:20,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:20,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:47:20,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:20,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:47:20,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:47:20,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-18 19:47:20,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 1393 transitions, 25389 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 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) [2022-11-18 19:47:20,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:20,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-18 19:47:20,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:35,378 INFO L130 PetriNetUnfolder]: 6225/14061 cut-off events. [2022-11-18 19:47:35,378 INFO L131 PetriNetUnfolder]: For 216420/216420 co-relation queries the response was YES. [2022-11-18 19:47:35,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90064 conditions, 14061 events. 6225/14061 cut-off events. For 216420/216420 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 129320 event pairs, 352 based on Foata normal form. 40/14066 useless extension candidates. Maximal degree in co-relation 89948. Up to 1606 conditions per place. [2022-11-18 19:47:35,655 INFO L137 encePairwiseOnDemand]: 78/98 looper letters, 1069 selfloop transitions, 3057 changer transitions 62/4226 dead transitions. [2022-11-18 19:47:35,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 4226 transitions, 80181 flow [2022-11-18 19:47:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-11-18 19:47:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2022-11-18 19:47:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 10063 transitions. [2022-11-18 19:47:35,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6299611869287592 [2022-11-18 19:47:35,670 INFO L72 ComplementDD]: Start complementDD. Operand 163 states and 10063 transitions. [2022-11-18 19:47:35,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 10063 transitions. [2022-11-18 19:47:35,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:35,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 163 states and 10063 transitions. [2022-11-18 19:47:35,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 164 states, 163 states have (on average 61.736196319018404) internal successors, (10063), 163 states have internal predecessors, (10063), 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) [2022-11-18 19:47:35,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 164 states, 164 states have (on average 98.0) internal successors, (16072), 164 states have internal predecessors, (16072), 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) [2022-11-18 19:47:35,716 INFO L81 ComplementDD]: Finished complementDD. Result has 164 states, 164 states have (on average 98.0) internal successors, (16072), 164 states have internal predecessors, (16072), 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) [2022-11-18 19:47:35,716 INFO L175 Difference]: Start difference. First operand has 629 places, 1393 transitions, 25389 flow. Second operand 163 states and 10063 transitions. [2022-11-18 19:47:35,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 784 places, 4226 transitions, 80181 flow [2022-11-18 19:47:39,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 4226 transitions, 77476 flow, removed 388 selfloop flow, removed 53 redundant places. [2022-11-18 19:47:39,250 INFO L231 Difference]: Finished difference. Result has 796 places, 3635 transitions, 74921 flow [2022-11-18 19:47:39,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=24487, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1020, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=163, PETRI_FLOW=74921, PETRI_PLACES=796, PETRI_TRANSITIONS=3635} [2022-11-18 19:47:39,251 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 717 predicate places. [2022-11-18 19:47:39,252 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 3635 transitions, 74921 flow [2022-11-18 19:47:39,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 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) [2022-11-18 19:47:39,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:39,252 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:39,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:39,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 19:47:39,458 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:47:39,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:39,459 INFO L85 PathProgramCache]: Analyzing trace with hash 490253768, now seen corresponding path program 2 times [2022-11-18 19:47:39,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:39,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850095567] [2022-11-18 19:47:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:39,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:39,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:39,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850095567] [2022-11-18 19:47:39,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850095567] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:39,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89858848] [2022-11-18 19:47:39,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:47:39,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:39,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:39,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:39,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:47:39,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:47:39,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:39,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:47:39,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:39,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:40,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89858848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:40,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:40,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-18 19:47:40,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051461179] [2022-11-18 19:47:40,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:40,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:47:40,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:40,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:47:40,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:47:40,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-18 19:47:40,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 3635 transitions, 74921 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 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) [2022-11-18 19:47:40,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:40,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-18 19:47:40,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:18,179 INFO L130 PetriNetUnfolder]: 11525/24829 cut-off events. [2022-11-18 19:48:18,179 INFO L131 PetriNetUnfolder]: For 528013/528013 co-relation queries the response was YES. [2022-11-18 19:48:18,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180012 conditions, 24829 events. 11525/24829 cut-off events. For 528013/528013 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 240356 event pairs, 860 based on Foata normal form. 25/24769 useless extension candidates. Maximal degree in co-relation 179840. Up to 3331 conditions per place. [2022-11-18 19:48:18,915 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 1746 selfloop transitions, 5060 changer transitions 108/6952 dead transitions. [2022-11-18 19:48:18,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 926 places, 6952 transitions, 154040 flow [2022-11-18 19:48:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-18 19:48:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2022-11-18 19:48:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 8274 transitions. [2022-11-18 19:48:18,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6348012889366272 [2022-11-18 19:48:18,931 INFO L72 ComplementDD]: Start complementDD. Operand 133 states and 8274 transitions. [2022-11-18 19:48:18,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 133 states and 8274 transitions. [2022-11-18 19:48:18,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:18,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 133 states and 8274 transitions. [2022-11-18 19:48:18,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 134 states, 133 states have (on average 62.21052631578947) internal successors, (8274), 133 states have internal predecessors, (8274), 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) [2022-11-18 19:48:18,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 134 states, 134 states have (on average 98.0) internal successors, (13132), 134 states have internal predecessors, (13132), 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) [2022-11-18 19:48:18,978 INFO L81 ComplementDD]: Finished complementDD. Result has 134 states, 134 states have (on average 98.0) internal successors, (13132), 134 states have internal predecessors, (13132), 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) [2022-11-18 19:48:18,978 INFO L175 Difference]: Start difference. First operand has 796 places, 3635 transitions, 74921 flow. Second operand 133 states and 8274 transitions. [2022-11-18 19:48:18,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 926 places, 6952 transitions, 154040 flow [2022-11-18 19:48:33,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 919 places, 6952 transitions, 149431 flow, removed 372 selfloop flow, removed 7 redundant places. [2022-11-18 19:48:33,608 INFO L231 Difference]: Finished difference. Result has 989 places, 6241 transitions, 145969 flow [2022-11-18 19:48:33,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=72337, PETRI_DIFFERENCE_MINUEND_PLACES=787, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2678, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=133, PETRI_FLOW=145969, PETRI_PLACES=989, PETRI_TRANSITIONS=6241} [2022-11-18 19:48:33,612 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 910 predicate places. [2022-11-18 19:48:33,612 INFO L495 AbstractCegarLoop]: Abstraction has has 989 places, 6241 transitions, 145969 flow [2022-11-18 19:48:33,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 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) [2022-11-18 19:48:33,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:33,613 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:33,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:33,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 19:48:33,820 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 19:48:33,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:33,820 INFO L85 PathProgramCache]: Analyzing trace with hash -857423534, now seen corresponding path program 3 times [2022-11-18 19:48:33,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:33,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625555747] [2022-11-18 19:48:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:33,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:33,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:33,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625555747] [2022-11-18 19:48:33,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625555747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:33,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151446931] [2022-11-18 19:48:33,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:48:33,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:33,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:33,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:34,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328ee909-c3ab-4801-bdd2-88f53cd40cdf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:48:34,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:48:34,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:48:34,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:48:34,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:34,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:48:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:34,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151446931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:48:34,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:48:34,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-18 19:48:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228431785] [2022-11-18 19:48:34,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:48:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:48:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:48:34,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-18 19:48:34,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 989 places, 6241 transitions, 145969 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 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) [2022-11-18 19:48:34,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:34,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-18 19:48:34,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand