./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 6b4ec56b 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_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 11:20:14,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:20:14,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:20:14,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:20:14,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:20:14,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:20:14,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:20:14,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:20:14,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:20:14,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:20:14,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:20:14,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:20:14,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:20:14,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:20:14,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:20:14,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:20:14,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:20:14,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:20:14,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:20:14,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:20:14,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:20:14,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:20:14,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:20:14,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:20:14,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:20:14,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:20:14,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:20:14,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:20:14,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:20:14,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:20:14,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:20:14,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:20:14,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:20:14,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:20:14,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:20:14,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:20:14,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:20:14,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:20:14,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:20:14,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:20:14,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:20:14,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:20:14,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:20:14,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:20:14,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:20:14,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:20:14,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:20:14,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:20:14,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:20:14,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:20:14,620 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:20:14,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:20:14,620 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:20:14,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:20:14,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:20:14,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:20:14,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:20:14,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:20:14,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:20:14,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:20:14,622 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:20:14,622 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:20:14,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:20:14,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:20:14,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:20:14,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:20:14,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:20:14,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:20:14,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:20:14,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:20:14,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:20:14,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:20:14,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:20:14,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:20:14,626 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:20:14,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:20:14,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:20:14,626 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_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 [2022-11-20 11:20:14,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:20:14,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:20:14,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:20:15,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:20:15,001 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:20:15,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-11-20 11:20:18,509 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:20:18,807 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:20:18,808 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-11-20 11:20:18,823 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/data/d127998b2/90a0be2ea13e49649543867adbcbfb06/FLAGf8f845d65 [2022-11-20 11:20:18,845 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/data/d127998b2/90a0be2ea13e49649543867adbcbfb06 [2022-11-20 11:20:18,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:20:18,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:20:18,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:20:18,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:20:18,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:20:18,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:20:18" (1/1) ... [2022-11-20 11:20:18,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f298a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:18, skipping insertion in model container [2022-11-20 11:20:18,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:20:18" (1/1) ... [2022-11-20 11:20:18,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:20:18,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:20:19,222 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-11-20 11:20:19,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:20:19,233 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:20:19,257 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-11-20 11:20:19,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:20:19,275 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:20:19,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19 WrapperNode [2022-11-20 11:20:19,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:20:19,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:20:19,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:20:19,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:20:19,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,335 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-20 11:20:19,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:20:19,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:20:19,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:20:19,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:20:19,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,388 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:20:19,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:20:19,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:20:19,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:20:19,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (1/1) ... [2022-11-20 11:20:19,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:20:19,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:19,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:20:19,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:20:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:20:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:20:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:20:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:20:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:20:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:20:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:20:19,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:20:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:20:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:20:19,515 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:20:19,673 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:20:19,676 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:20:19,897 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:20:19,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:20:19,932 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:20:19,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:20:19 BoogieIcfgContainer [2022-11-20 11:20:19,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:20:19,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:20:19,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:20:19,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:20:19,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:20:18" (1/3) ... [2022-11-20 11:20:19,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12870036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:20:19, skipping insertion in model container [2022-11-20 11:20:19,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:19" (2/3) ... [2022-11-20 11:20:19,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12870036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:20:19, skipping insertion in model container [2022-11-20 11:20:19,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:20:19" (3/3) ... [2022-11-20 11:20:19,948 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-11-20 11:20:19,959 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:20:19,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:20:19,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 11:20:19,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:20:20,147 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:20:20,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 212 flow [2022-11-20 11:20:20,273 INFO L130 PetriNetUnfolder]: 6/96 cut-off events. [2022-11-20 11:20:20,278 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:20:20,287 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. [2022-11-20 11:20:20,287 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 212 flow [2022-11-20 11:20:20,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 77 transitions, 163 flow [2022-11-20 11:20:20,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:20:20,334 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;@7e1af5a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:20:20,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 11:20:20,384 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-11-20 11:20:20,384 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:20:20,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:20,385 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] [2022-11-20 11:20:20,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash -340817317, now seen corresponding path program 1 times [2022-11-20 11:20:20,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:20,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316751843] [2022-11-20 11:20:20,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:20,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:20,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:20,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316751843] [2022-11-20 11:20:20,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316751843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:20,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:20,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:20:20,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11222165] [2022-11-20 11:20:20,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:20,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:20:20,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:20:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:20:20,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 98 [2022-11-20 11:20:20,824 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) [2022-11-20 11:20:20,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:20,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 98 [2022-11-20 11:20:20,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:20,926 INFO L130 PetriNetUnfolder]: 10/100 cut-off events. [2022-11-20 11:20:20,932 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-20 11:20:20,933 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. [2022-11-20 11:20:20,938 INFO L137 encePairwiseOnDemand]: 95/98 looper letters, 7 selfloop transitions, 0 changer transitions 1/74 dead transitions. [2022-11-20 11:20:20,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 171 flow [2022-11-20 11:20:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:20:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:20:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2022-11-20 11:20:20,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9183673469387755 [2022-11-20 11:20:20,959 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2022-11-20 11:20:20,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2022-11-20 11:20:20,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:20,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2022-11-20 11:20:20,978 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) [2022-11-20 11:20:20,985 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) [2022-11-20 11:20:20,985 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) [2022-11-20 11:20:20,987 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 163 flow. Second operand 2 states and 180 transitions. [2022-11-20 11:20:20,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 171 flow [2022-11-20 11:20:20,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:20:20,995 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 150 flow [2022-11-20 11:20:20,998 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} [2022-11-20 11:20:21,003 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2022-11-20 11:20:21,003 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 150 flow [2022-11-20 11:20:21,003 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) [2022-11-20 11:20:21,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:21,004 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] [2022-11-20 11:20:21,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:20:21,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:21,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash -340817286, now seen corresponding path program 1 times [2022-11-20 11:20:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:21,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650585848] [2022-11-20 11:20:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:21,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:21,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:21,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650585848] [2022-11-20 11:20:21,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650585848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:21,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:21,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:21,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55527432] [2022-11-20 11:20:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:21,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:21,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:21,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:21,305 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) [2022-11-20 11:20:21,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:21,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:21,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:21,592 INFO L130 PetriNetUnfolder]: 75/278 cut-off events. [2022-11-20 11:20:21,593 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 11:20:21,600 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. [2022-11-20 11:20:21,604 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 32 selfloop transitions, 12 changer transitions 2/96 dead transitions. [2022-11-20 11:20:21,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 292 flow [2022-11-20 11:20:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:20:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 523 transitions. [2022-11-20 11:20:21,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7623906705539358 [2022-11-20 11:20:21,616 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 523 transitions. [2022-11-20 11:20:21,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 523 transitions. [2022-11-20 11:20:21,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:21,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 523 transitions. [2022-11-20 11:20:21,622 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) [2022-11-20 11:20:21,627 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) [2022-11-20 11:20:21,628 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) [2022-11-20 11:20:21,628 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 150 flow. Second operand 7 states and 523 transitions. [2022-11-20 11:20:21,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 292 flow [2022-11-20 11:20:21,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:20:21,635 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 209 flow [2022-11-20 11:20:21,636 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} [2022-11-20 11:20:21,637 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2022-11-20 11:20:21,638 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 209 flow [2022-11-20 11:20:21,638 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) [2022-11-20 11:20:21,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:21,640 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] [2022-11-20 11:20:21,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:20:21,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:21,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:21,643 INFO L85 PathProgramCache]: Analyzing trace with hash -340817285, now seen corresponding path program 1 times [2022-11-20 11:20:21,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:21,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864548006] [2022-11-20 11:20:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:21,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:21,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:21,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864548006] [2022-11-20 11:20:21,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864548006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:21,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:21,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:20:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750543941] [2022-11-20 11:20:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:21,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:20:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:20:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:20:21,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-20 11:20:21,834 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) [2022-11-20 11:20:21,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:21,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-20 11:20:21,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:21,929 INFO L130 PetriNetUnfolder]: 48/194 cut-off events. [2022-11-20 11:20:21,929 INFO L131 PetriNetUnfolder]: For 46/51 co-relation queries the response was YES. [2022-11-20 11:20:21,930 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. [2022-11-20 11:20:21,932 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 26 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2022-11-20 11:20:21,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 311 flow [2022-11-20 11:20:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:20:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:20:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2022-11-20 11:20:21,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8443877551020408 [2022-11-20 11:20:21,935 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2022-11-20 11:20:21,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2022-11-20 11:20:21,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:21,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2022-11-20 11:20:21,937 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) [2022-11-20 11:20:21,939 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) [2022-11-20 11:20:21,940 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) [2022-11-20 11:20:21,940 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 209 flow. Second operand 4 states and 331 transitions. [2022-11-20 11:20:21,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 311 flow [2022-11-20 11:20:21,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 298 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:20:21,944 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 231 flow [2022-11-20 11:20:21,945 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} [2022-11-20 11:20:21,946 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2022-11-20 11:20:21,946 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 231 flow [2022-11-20 11:20:21,947 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) [2022-11-20 11:20:21,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:21,947 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] [2022-11-20 11:20:21,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:20:21,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:21,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1975399980, now seen corresponding path program 1 times [2022-11-20 11:20:21,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:21,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147478777] [2022-11-20 11:20:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:21,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:22,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147478777] [2022-11-20 11:20:22,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147478777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:22,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:22,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:20:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644419403] [2022-11-20 11:20:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:20:22,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:20:22,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:20:22,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2022-11-20 11:20:22,037 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) [2022-11-20 11:20:22,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:22,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2022-11-20 11:20:22,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:22,160 INFO L130 PetriNetUnfolder]: 49/202 cut-off events. [2022-11-20 11:20:22,160 INFO L131 PetriNetUnfolder]: For 67/84 co-relation queries the response was YES. [2022-11-20 11:20:22,162 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. [2022-11-20 11:20:22,164 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 29 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2022-11-20 11:20:22,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 338 flow [2022-11-20 11:20:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:20:22,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:20:22,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2022-11-20 11:20:22,169 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8020408163265306 [2022-11-20 11:20:22,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 393 transitions. [2022-11-20 11:20:22,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 393 transitions. [2022-11-20 11:20:22,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:22,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 393 transitions. [2022-11-20 11:20:22,173 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) [2022-11-20 11:20:22,215 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) [2022-11-20 11:20:22,215 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) [2022-11-20 11:20:22,216 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 231 flow. Second operand 5 states and 393 transitions. [2022-11-20 11:20:22,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 338 flow [2022-11-20 11:20:22,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:22,221 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 234 flow [2022-11-20 11:20:22,221 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} [2022-11-20 11:20:22,222 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2022-11-20 11:20:22,222 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 234 flow [2022-11-20 11:20:22,223 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) [2022-11-20 11:20:22,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:22,223 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] [2022-11-20 11:20:22,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:20:22,224 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:22,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1107856962, now seen corresponding path program 1 times [2022-11-20 11:20:22,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:22,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793198621] [2022-11-20 11:20:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:22,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:22,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793198621] [2022-11-20 11:20:22,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793198621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:22,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:22,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592340252] [2022-11-20 11:20:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:22,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:22,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 98 [2022-11-20 11:20:22,432 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) [2022-11-20 11:20:22,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:22,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 98 [2022-11-20 11:20:22,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:22,605 INFO L130 PetriNetUnfolder]: 60/207 cut-off events. [2022-11-20 11:20:22,605 INFO L131 PetriNetUnfolder]: For 85/88 co-relation queries the response was YES. [2022-11-20 11:20:22,606 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. [2022-11-20 11:20:22,608 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 34 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2022-11-20 11:20:22,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 348 flow [2022-11-20 11:20:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:20:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:20:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2022-11-20 11:20:22,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7295918367346939 [2022-11-20 11:20:22,611 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 429 transitions. [2022-11-20 11:20:22,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 429 transitions. [2022-11-20 11:20:22,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:22,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 429 transitions. [2022-11-20 11:20:22,614 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) [2022-11-20 11:20:22,616 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) [2022-11-20 11:20:22,617 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) [2022-11-20 11:20:22,617 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 234 flow. Second operand 6 states and 429 transitions. [2022-11-20 11:20:22,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 348 flow [2022-11-20 11:20:22,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:20:22,622 INFO L231 Difference]: Finished difference. Result has 87 places, 79 transitions, 234 flow [2022-11-20 11:20:22,623 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} [2022-11-20 11:20:22,624 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2022-11-20 11:20:22,624 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 234 flow [2022-11-20 11:20:22,625 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) [2022-11-20 11:20:22,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:22,625 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] [2022-11-20 11:20:22,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:20:22,626 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:22,627 INFO L85 PathProgramCache]: Analyzing trace with hash 866190475, now seen corresponding path program 1 times [2022-11-20 11:20:22,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:22,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798559485] [2022-11-20 11:20:22,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:22,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:22,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798559485] [2022-11-20 11:20:22,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798559485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:22,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:22,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:22,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647598924] [2022-11-20 11:20:22,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:22,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:22,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:22,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:22,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:22,783 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) [2022-11-20 11:20:22,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:22,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:22,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:22,932 INFO L130 PetriNetUnfolder]: 72/225 cut-off events. [2022-11-20 11:20:22,932 INFO L131 PetriNetUnfolder]: For 173/220 co-relation queries the response was YES. [2022-11-20 11:20:22,933 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. [2022-11-20 11:20:22,936 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 29 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2022-11-20 11:20:22,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 410 flow [2022-11-20 11:20:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:22,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:20:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2022-11-20 11:20:22,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2022-11-20 11:20:22,939 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2022-11-20 11:20:22,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2022-11-20 11:20:22,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:22,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2022-11-20 11:20:22,942 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) [2022-11-20 11:20:22,944 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) [2022-11-20 11:20:22,944 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) [2022-11-20 11:20:22,945 INFO L175 Difference]: Start difference. First operand has 87 places, 79 transitions, 234 flow. Second operand 7 states and 518 transitions. [2022-11-20 11:20:22,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 410 flow [2022-11-20 11:20:22,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 394 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:20:22,956 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 335 flow [2022-11-20 11:20:22,957 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} [2022-11-20 11:20:22,960 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2022-11-20 11:20:22,960 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 335 flow [2022-11-20 11:20:22,960 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) [2022-11-20 11:20:22,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:22,961 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] [2022-11-20 11:20:22,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:20:22,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:22,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash 866190476, now seen corresponding path program 1 times [2022-11-20 11:20:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:22,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082944213] [2022-11-20 11:20:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:23,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:23,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082944213] [2022-11-20 11:20:23,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082944213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:23,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:23,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:20:23,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713623601] [2022-11-20 11:20:23,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:23,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:20:23,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:20:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:20:23,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-20 11:20:23,112 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) [2022-11-20 11:20:23,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:23,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-20 11:20:23,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:23,228 INFO L130 PetriNetUnfolder]: 56/194 cut-off events. [2022-11-20 11:20:23,229 INFO L131 PetriNetUnfolder]: For 233/329 co-relation queries the response was YES. [2022-11-20 11:20:23,230 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. [2022-11-20 11:20:23,232 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 23 selfloop transitions, 18 changer transitions 0/100 dead transitions. [2022-11-20 11:20:23,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 473 flow [2022-11-20 11:20:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:20:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:20:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 328 transitions. [2022-11-20 11:20:23,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8367346938775511 [2022-11-20 11:20:23,236 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 328 transitions. [2022-11-20 11:20:23,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 328 transitions. [2022-11-20 11:20:23,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:23,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 328 transitions. [2022-11-20 11:20:23,238 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) [2022-11-20 11:20:23,240 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) [2022-11-20 11:20:23,240 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) [2022-11-20 11:20:23,240 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 335 flow. Second operand 4 states and 328 transitions. [2022-11-20 11:20:23,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 473 flow [2022-11-20 11:20:23,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 100 transitions, 450 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:20:23,249 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 403 flow [2022-11-20 11:20:23,249 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} [2022-11-20 11:20:23,254 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-11-20 11:20:23,254 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 403 flow [2022-11-20 11:20:23,254 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) [2022-11-20 11:20:23,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:23,255 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] [2022-11-20 11:20:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:20:23,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 768446914, now seen corresponding path program 1 times [2022-11-20 11:20:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:23,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087491694] [2022-11-20 11:20:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:23,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:23,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087491694] [2022-11-20 11:20:23,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087491694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:23,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:23,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866664789] [2022-11-20 11:20:23,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:23,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:23,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:23,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:23,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2022-11-20 11:20:23,467 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) [2022-11-20 11:20:23,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:23,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2022-11-20 11:20:23,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:23,639 INFO L130 PetriNetUnfolder]: 64/228 cut-off events. [2022-11-20 11:20:23,640 INFO L131 PetriNetUnfolder]: For 332/432 co-relation queries the response was YES. [2022-11-20 11:20:23,641 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. [2022-11-20 11:20:23,644 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 32 selfloop transitions, 30 changer transitions 0/118 dead transitions. [2022-11-20 11:20:23,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 118 transitions, 675 flow [2022-11-20 11:20:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:20:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-11-20 11:20:23,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7813411078717201 [2022-11-20 11:20:23,647 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-11-20 11:20:23,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-11-20 11:20:23,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:23,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-11-20 11:20:23,650 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) [2022-11-20 11:20:23,652 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) [2022-11-20 11:20:23,653 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) [2022-11-20 11:20:23,653 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 403 flow. Second operand 7 states and 536 transitions. [2022-11-20 11:20:23,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 118 transitions, 675 flow [2022-11-20 11:20:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 118 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:23,659 INFO L231 Difference]: Finished difference. Result has 100 places, 104 transitions, 573 flow [2022-11-20 11:20:23,659 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} [2022-11-20 11:20:23,664 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2022-11-20 11:20:23,664 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 104 transitions, 573 flow [2022-11-20 11:20:23,665 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) [2022-11-20 11:20:23,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:23,665 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] [2022-11-20 11:20:23,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:20:23,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:23,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1082102260, now seen corresponding path program 1 times [2022-11-20 11:20:23,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:23,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811462389] [2022-11-20 11:20:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:23,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:23,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:23,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811462389] [2022-11-20 11:20:23,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811462389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:23,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:23,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:20:23,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979409634] [2022-11-20 11:20:23,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:23,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:20:23,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:20:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:20:23,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2022-11-20 11:20:23,762 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) [2022-11-20 11:20:23,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:23,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2022-11-20 11:20:23,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:23,860 INFO L130 PetriNetUnfolder]: 58/169 cut-off events. [2022-11-20 11:20:23,860 INFO L131 PetriNetUnfolder]: For 561/683 co-relation queries the response was YES. [2022-11-20 11:20:23,861 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. [2022-11-20 11:20:23,863 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 47 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2022-11-20 11:20:23,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 764 flow [2022-11-20 11:20:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:20:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:20:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2022-11-20 11:20:23,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2022-11-20 11:20:23,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2022-11-20 11:20:23,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2022-11-20 11:20:23,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:23,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2022-11-20 11:20:23,871 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) [2022-11-20 11:20:23,873 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) [2022-11-20 11:20:23,873 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) [2022-11-20 11:20:23,875 INFO L175 Difference]: Start difference. First operand has 100 places, 104 transitions, 573 flow. Second operand 5 states and 390 transitions. [2022-11-20 11:20:23,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 764 flow [2022-11-20 11:20:23,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:23,882 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 558 flow [2022-11-20 11:20:23,883 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} [2022-11-20 11:20:23,884 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2022-11-20 11:20:23,884 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 558 flow [2022-11-20 11:20:23,886 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) [2022-11-20 11:20:23,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:23,887 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] [2022-11-20 11:20:23,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:20:23,887 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:23,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash -814568017, now seen corresponding path program 1 times [2022-11-20 11:20:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:23,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473683704] [2022-11-20 11:20:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:23,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:23,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:23,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473683704] [2022-11-20 11:20:24,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473683704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:24,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:24,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:24,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715381998] [2022-11-20 11:20:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:24,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:24,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 98 [2022-11-20 11:20:24,013 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) [2022-11-20 11:20:24,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:24,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 98 [2022-11-20 11:20:24,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:24,157 INFO L130 PetriNetUnfolder]: 69/197 cut-off events. [2022-11-20 11:20:24,158 INFO L131 PetriNetUnfolder]: For 597/699 co-relation queries the response was YES. [2022-11-20 11:20:24,159 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. [2022-11-20 11:20:24,161 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 54 selfloop transitions, 7 changer transitions 0/112 dead transitions. [2022-11-20 11:20:24,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 112 transitions, 768 flow [2022-11-20 11:20:24,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:20:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:20:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 427 transitions. [2022-11-20 11:20:24,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2022-11-20 11:20:24,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 427 transitions. [2022-11-20 11:20:24,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 427 transitions. [2022-11-20 11:20:24,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:24,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 427 transitions. [2022-11-20 11:20:24,167 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) [2022-11-20 11:20:24,170 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) [2022-11-20 11:20:24,171 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) [2022-11-20 11:20:24,171 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 558 flow. Second operand 6 states and 427 transitions. [2022-11-20 11:20:24,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 112 transitions, 768 flow [2022-11-20 11:20:24,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 756 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:20:24,178 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 558 flow [2022-11-20 11:20:24,179 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} [2022-11-20 11:20:24,180 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2022-11-20 11:20:24,180 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 558 flow [2022-11-20 11:20:24,180 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) [2022-11-20 11:20:24,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:24,181 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] [2022-11-20 11:20:24,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:20:24,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:24,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash 881206193, now seen corresponding path program 1 times [2022-11-20 11:20:24,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:24,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143493562] [2022-11-20 11:20:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:24,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:24,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:24,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143493562] [2022-11-20 11:20:24,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143493562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:24,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:24,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:24,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174580402] [2022-11-20 11:20:24,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:24,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:24,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:24,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:24,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:24,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-20 11:20:24,345 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) [2022-11-20 11:20:24,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:24,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-20 11:20:24,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:24,570 INFO L130 PetriNetUnfolder]: 131/337 cut-off events. [2022-11-20 11:20:24,570 INFO L131 PetriNetUnfolder]: For 747/747 co-relation queries the response was YES. [2022-11-20 11:20:24,572 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. [2022-11-20 11:20:24,575 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 47 selfloop transitions, 33 changer transitions 0/128 dead transitions. [2022-11-20 11:20:24,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 128 transitions, 859 flow [2022-11-20 11:20:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-11-20 11:20:24,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7742346938775511 [2022-11-20 11:20:24,578 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-11-20 11:20:24,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-11-20 11:20:24,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:24,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-11-20 11:20:24,581 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) [2022-11-20 11:20:24,583 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) [2022-11-20 11:20:24,584 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) [2022-11-20 11:20:24,584 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 558 flow. Second operand 8 states and 607 transitions. [2022-11-20 11:20:24,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 128 transitions, 859 flow [2022-11-20 11:20:24,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 128 transitions, 839 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:20:24,592 INFO L231 Difference]: Finished difference. Result has 105 places, 108 transitions, 660 flow [2022-11-20 11:20:24,593 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} [2022-11-20 11:20:24,593 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 26 predicate places. [2022-11-20 11:20:24,593 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 108 transitions, 660 flow [2022-11-20 11:20:24,594 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) [2022-11-20 11:20:24,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:24,594 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] [2022-11-20 11:20:24,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:20:24,595 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:24,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1292247592, now seen corresponding path program 1 times [2022-11-20 11:20:24,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:24,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323898577] [2022-11-20 11:20:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:24,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:24,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:24,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323898577] [2022-11-20 11:20:24,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323898577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:24,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:24,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:20:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686902399] [2022-11-20 11:20:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:24,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:20:24,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:20:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:20:24,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-20 11:20:24,892 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) [2022-11-20 11:20:24,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:24,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-20 11:20:24,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:25,358 INFO L130 PetriNetUnfolder]: 158/416 cut-off events. [2022-11-20 11:20:25,358 INFO L131 PetriNetUnfolder]: For 1216/1218 co-relation queries the response was YES. [2022-11-20 11:20:25,360 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. [2022-11-20 11:20:25,363 INFO L137 encePairwiseOnDemand]: 84/98 looper letters, 60 selfloop transitions, 52 changer transitions 1/155 dead transitions. [2022-11-20 11:20:25,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 155 transitions, 1191 flow [2022-11-20 11:20:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:20:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:20:25,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 725 transitions. [2022-11-20 11:20:25,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6725417439703154 [2022-11-20 11:20:25,368 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 725 transitions. [2022-11-20 11:20:25,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 725 transitions. [2022-11-20 11:20:25,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:25,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 725 transitions. [2022-11-20 11:20:25,371 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) [2022-11-20 11:20:25,374 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) [2022-11-20 11:20:25,375 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) [2022-11-20 11:20:25,375 INFO L175 Difference]: Start difference. First operand has 105 places, 108 transitions, 660 flow. Second operand 11 states and 725 transitions. [2022-11-20 11:20:25,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 155 transitions, 1191 flow [2022-11-20 11:20:25,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 155 transitions, 1106 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 11:20:25,386 INFO L231 Difference]: Finished difference. Result has 113 places, 124 transitions, 893 flow [2022-11-20 11:20:25,386 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} [2022-11-20 11:20:25,387 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2022-11-20 11:20:25,387 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 124 transitions, 893 flow [2022-11-20 11:20:25,388 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) [2022-11-20 11:20:25,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:25,388 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] [2022-11-20 11:20:25,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:20:25,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1657652532, now seen corresponding path program 2 times [2022-11-20 11:20:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:25,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754471284] [2022-11-20 11:20:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754471284] [2022-11-20 11:20:25,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754471284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:25,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:25,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:20:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631944884] [2022-11-20 11:20:25,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:25,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:20:25,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:25,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:20:25,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:20:25,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-20 11:20:25,664 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) [2022-11-20 11:20:25,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:25,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-20 11:20:25,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:26,040 INFO L130 PetriNetUnfolder]: 181/493 cut-off events. [2022-11-20 11:20:26,041 INFO L131 PetriNetUnfolder]: For 1879/1891 co-relation queries the response was YES. [2022-11-20 11:20:26,043 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. [2022-11-20 11:20:26,047 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 56 selfloop transitions, 52 changer transitions 1/151 dead transitions. [2022-11-20 11:20:26,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 151 transitions, 1276 flow [2022-11-20 11:20:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:20:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:20:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 591 transitions. [2022-11-20 11:20:26,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6700680272108843 [2022-11-20 11:20:26,051 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 591 transitions. [2022-11-20 11:20:26,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 591 transitions. [2022-11-20 11:20:26,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:26,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 591 transitions. [2022-11-20 11:20:26,054 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) [2022-11-20 11:20:26,056 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) [2022-11-20 11:20:26,057 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) [2022-11-20 11:20:26,057 INFO L175 Difference]: Start difference. First operand has 113 places, 124 transitions, 893 flow. Second operand 9 states and 591 transitions. [2022-11-20 11:20:26,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 151 transitions, 1276 flow [2022-11-20 11:20:26,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 151 transitions, 1160 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-20 11:20:26,071 INFO L231 Difference]: Finished difference. Result has 117 places, 131 transitions, 1023 flow [2022-11-20 11:20:26,071 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} [2022-11-20 11:20:26,073 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2022-11-20 11:20:26,073 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 131 transitions, 1023 flow [2022-11-20 11:20:26,073 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) [2022-11-20 11:20:26,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:26,074 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] [2022-11-20 11:20:26,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:20:26,074 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:26,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:26,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1657652531, now seen corresponding path program 2 times [2022-11-20 11:20:26,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:26,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078610313] [2022-11-20 11:20:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:26,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:26,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078610313] [2022-11-20 11:20:26,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078610313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:26,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:26,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:26,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143045298] [2022-11-20 11:20:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:26,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:26,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-20 11:20:26,186 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) [2022-11-20 11:20:26,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:26,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-20 11:20:26,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:26,511 INFO L130 PetriNetUnfolder]: 184/520 cut-off events. [2022-11-20 11:20:26,511 INFO L131 PetriNetUnfolder]: For 2185/2197 co-relation queries the response was YES. [2022-11-20 11:20:26,513 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. [2022-11-20 11:20:26,517 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 65 selfloop transitions, 54 changer transitions 2/169 dead transitions. [2022-11-20 11:20:26,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 169 transitions, 1639 flow [2022-11-20 11:20:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2022-11-20 11:20:26,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-11-20 11:20:26,521 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2022-11-20 11:20:26,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2022-11-20 11:20:26,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:26,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2022-11-20 11:20:26,524 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) [2022-11-20 11:20:26,526 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) [2022-11-20 11:20:26,527 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) [2022-11-20 11:20:26,527 INFO L175 Difference]: Start difference. First operand has 117 places, 131 transitions, 1023 flow. Second operand 8 states and 609 transitions. [2022-11-20 11:20:26,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 169 transitions, 1639 flow [2022-11-20 11:20:26,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 169 transitions, 1558 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 11:20:26,552 INFO L231 Difference]: Finished difference. Result has 122 places, 144 transitions, 1334 flow [2022-11-20 11:20:26,552 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} [2022-11-20 11:20:26,553 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 43 predicate places. [2022-11-20 11:20:26,553 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 144 transitions, 1334 flow [2022-11-20 11:20:26,554 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) [2022-11-20 11:20:26,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:26,554 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] [2022-11-20 11:20:26,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:20:26,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:26,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1675123511, now seen corresponding path program 3 times [2022-11-20 11:20:26,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:26,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789571423] [2022-11-20 11:20:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:26,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:26,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789571423] [2022-11-20 11:20:26,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789571423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:26,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:26,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077131478] [2022-11-20 11:20:26,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:26,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:26,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:26,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:26,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:26,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-20 11:20:26,666 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) [2022-11-20 11:20:26,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:26,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-20 11:20:26,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:26,923 INFO L130 PetriNetUnfolder]: 181/521 cut-off events. [2022-11-20 11:20:26,923 INFO L131 PetriNetUnfolder]: For 2689/2712 co-relation queries the response was YES. [2022-11-20 11:20:26,925 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. [2022-11-20 11:20:26,930 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 63 selfloop transitions, 53 changer transitions 2/166 dead transitions. [2022-11-20 11:20:26,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 166 transitions, 1659 flow [2022-11-20 11:20:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2022-11-20 11:20:26,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-11-20 11:20:26,933 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2022-11-20 11:20:26,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2022-11-20 11:20:26,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:26,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2022-11-20 11:20:26,936 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) [2022-11-20 11:20:26,938 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) [2022-11-20 11:20:26,938 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) [2022-11-20 11:20:26,939 INFO L175 Difference]: Start difference. First operand has 122 places, 144 transitions, 1334 flow. Second operand 8 states and 609 transitions. [2022-11-20 11:20:26,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 166 transitions, 1659 flow [2022-11-20 11:20:26,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 166 transitions, 1382 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-20 11:20:26,959 INFO L231 Difference]: Finished difference. Result has 121 places, 140 transitions, 1111 flow [2022-11-20 11:20:26,959 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} [2022-11-20 11:20:26,960 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 42 predicate places. [2022-11-20 11:20:26,960 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 140 transitions, 1111 flow [2022-11-20 11:20:26,960 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) [2022-11-20 11:20:26,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:26,961 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] [2022-11-20 11:20:26,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:20:26,961 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:26,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1771894146, now seen corresponding path program 3 times [2022-11-20 11:20:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:26,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067513824] [2022-11-20 11:20:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:26,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:27,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:27,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067513824] [2022-11-20 11:20:27,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067513824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:27,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:27,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:20:27,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640346162] [2022-11-20 11:20:27,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:27,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:20:27,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:20:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:20:27,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-20 11:20:27,177 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) [2022-11-20 11:20:27,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:27,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-20 11:20:27,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:27,639 INFO L130 PetriNetUnfolder]: 193/584 cut-off events. [2022-11-20 11:20:27,640 INFO L131 PetriNetUnfolder]: For 1822/1850 co-relation queries the response was YES. [2022-11-20 11:20:27,643 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. [2022-11-20 11:20:27,649 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 76 selfloop transitions, 65 changer transitions 1/184 dead transitions. [2022-11-20 11:20:27,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 184 transitions, 1681 flow [2022-11-20 11:20:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:20:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:20:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 722 transitions. [2022-11-20 11:20:27,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6697588126159555 [2022-11-20 11:20:27,655 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 722 transitions. [2022-11-20 11:20:27,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 722 transitions. [2022-11-20 11:20:27,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:27,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 722 transitions. [2022-11-20 11:20:27,661 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) [2022-11-20 11:20:27,665 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) [2022-11-20 11:20:27,666 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) [2022-11-20 11:20:27,667 INFO L175 Difference]: Start difference. First operand has 121 places, 140 transitions, 1111 flow. Second operand 11 states and 722 transitions. [2022-11-20 11:20:27,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 184 transitions, 1681 flow [2022-11-20 11:20:27,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 184 transitions, 1605 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:20:27,686 INFO L231 Difference]: Finished difference. Result has 129 places, 142 transitions, 1215 flow [2022-11-20 11:20:27,686 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} [2022-11-20 11:20:27,687 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 50 predicate places. [2022-11-20 11:20:27,690 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 142 transitions, 1215 flow [2022-11-20 11:20:27,690 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) [2022-11-20 11:20:27,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:27,691 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] [2022-11-20 11:20:27,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:20:27,691 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1580034405, now seen corresponding path program 1 times [2022-11-20 11:20:27,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:27,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213599775] [2022-11-20 11:20:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:27,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:27,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213599775] [2022-11-20 11:20:27,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213599775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:27,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:27,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922221366] [2022-11-20 11:20:27,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:27,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:27,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:27,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-20 11:20:27,798 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) [2022-11-20 11:20:27,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:27,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-20 11:20:27,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:28,043 INFO L130 PetriNetUnfolder]: 193/587 cut-off events. [2022-11-20 11:20:28,044 INFO L131 PetriNetUnfolder]: For 2199/2234 co-relation queries the response was YES. [2022-11-20 11:20:28,046 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. [2022-11-20 11:20:28,051 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 62 selfloop transitions, 52 changer transitions 0/162 dead transitions. [2022-11-20 11:20:28,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 162 transitions, 1579 flow [2022-11-20 11:20:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:20:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:20:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2022-11-20 11:20:28,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7874149659863946 [2022-11-20 11:20:28,056 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2022-11-20 11:20:28,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2022-11-20 11:20:28,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:28,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2022-11-20 11:20:28,064 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) [2022-11-20 11:20:28,065 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) [2022-11-20 11:20:28,066 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) [2022-11-20 11:20:28,066 INFO L175 Difference]: Start difference. First operand has 129 places, 142 transitions, 1215 flow. Second operand 6 states and 463 transitions. [2022-11-20 11:20:28,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 162 transitions, 1579 flow [2022-11-20 11:20:28,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 162 transitions, 1436 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-20 11:20:28,083 INFO L231 Difference]: Finished difference. Result has 128 places, 145 transitions, 1281 flow [2022-11-20 11:20:28,083 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} [2022-11-20 11:20:28,084 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 49 predicate places. [2022-11-20 11:20:28,084 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 145 transitions, 1281 flow [2022-11-20 11:20:28,085 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) [2022-11-20 11:20:28,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:28,085 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] [2022-11-20 11:20:28,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:20:28,086 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1292267632, now seen corresponding path program 1 times [2022-11-20 11:20:28,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:28,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316765567] [2022-11-20 11:20:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:28,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:28,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316765567] [2022-11-20 11:20:28,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316765567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:28,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:28,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:20:28,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890221188] [2022-11-20 11:20:28,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:28,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:20:28,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:20:28,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:20:28,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-20 11:20:28,315 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) [2022-11-20 11:20:28,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:28,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-20 11:20:28,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:28,714 INFO L130 PetriNetUnfolder]: 193/603 cut-off events. [2022-11-20 11:20:28,714 INFO L131 PetriNetUnfolder]: For 2222/2252 co-relation queries the response was YES. [2022-11-20 11:20:28,717 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. [2022-11-20 11:20:28,722 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 71 selfloop transitions, 60 changer transitions 2/175 dead transitions. [2022-11-20 11:20:28,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 175 transitions, 1737 flow [2022-11-20 11:20:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:20:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:20:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 591 transitions. [2022-11-20 11:20:28,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6700680272108843 [2022-11-20 11:20:28,725 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 591 transitions. [2022-11-20 11:20:28,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 591 transitions. [2022-11-20 11:20:28,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:28,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 591 transitions. [2022-11-20 11:20:28,727 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) [2022-11-20 11:20:28,730 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) [2022-11-20 11:20:28,730 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) [2022-11-20 11:20:28,731 INFO L175 Difference]: Start difference. First operand has 128 places, 145 transitions, 1281 flow. Second operand 9 states and 591 transitions. [2022-11-20 11:20:28,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 175 transitions, 1737 flow [2022-11-20 11:20:28,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 175 transitions, 1709 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:28,750 INFO L231 Difference]: Finished difference. Result has 137 places, 146 transitions, 1430 flow [2022-11-20 11:20:28,751 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} [2022-11-20 11:20:28,752 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 58 predicate places. [2022-11-20 11:20:28,752 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 146 transitions, 1430 flow [2022-11-20 11:20:28,752 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) [2022-11-20 11:20:28,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:28,753 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] [2022-11-20 11:20:28,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:20:28,753 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1657632491, now seen corresponding path program 2 times [2022-11-20 11:20:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:28,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824108650] [2022-11-20 11:20:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:28,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:28,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824108650] [2022-11-20 11:20:28,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824108650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:28,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:28,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:28,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960560793] [2022-11-20 11:20:28,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:28,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:28,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:28,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:28,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-20 11:20:28,838 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) [2022-11-20 11:20:28,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:28,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-20 11:20:28,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:29,033 INFO L130 PetriNetUnfolder]: 192/599 cut-off events. [2022-11-20 11:20:29,033 INFO L131 PetriNetUnfolder]: For 2979/2999 co-relation queries the response was YES. [2022-11-20 11:20:29,036 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. [2022-11-20 11:20:29,041 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 65 selfloop transitions, 50 changer transitions 0/163 dead transitions. [2022-11-20 11:20:29,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 163 transitions, 1791 flow [2022-11-20 11:20:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:20:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:20:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 458 transitions. [2022-11-20 11:20:29,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7789115646258503 [2022-11-20 11:20:29,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 458 transitions. [2022-11-20 11:20:29,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 458 transitions. [2022-11-20 11:20:29,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:29,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 458 transitions. [2022-11-20 11:20:29,046 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) [2022-11-20 11:20:29,047 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) [2022-11-20 11:20:29,048 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) [2022-11-20 11:20:29,048 INFO L175 Difference]: Start difference. First operand has 137 places, 146 transitions, 1430 flow. Second operand 6 states and 458 transitions. [2022-11-20 11:20:29,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 163 transitions, 1791 flow [2022-11-20 11:20:29,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 163 transitions, 1696 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-20 11:20:29,068 INFO L231 Difference]: Finished difference. Result has 138 places, 147 transitions, 1499 flow [2022-11-20 11:20:29,069 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} [2022-11-20 11:20:29,069 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 59 predicate places. [2022-11-20 11:20:29,070 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 147 transitions, 1499 flow [2022-11-20 11:20:29,070 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) [2022-11-20 11:20:29,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:29,071 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] [2022-11-20 11:20:29,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:20:29,071 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1674632891, now seen corresponding path program 3 times [2022-11-20 11:20:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:29,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2818696] [2022-11-20 11:20:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:29,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:29,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2818696] [2022-11-20 11:20:29,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2818696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:29,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:29,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:29,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632484537] [2022-11-20 11:20:29,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:29,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:29,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:29,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:29,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:29,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-20 11:20:29,167 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) [2022-11-20 11:20:29,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:29,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-20 11:20:29,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:29,382 INFO L130 PetriNetUnfolder]: 191/597 cut-off events. [2022-11-20 11:20:29,382 INFO L131 PetriNetUnfolder]: For 2888/2908 co-relation queries the response was YES. [2022-11-20 11:20:29,385 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. [2022-11-20 11:20:29,389 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 62 selfloop transitions, 50 changer transitions 1/161 dead transitions. [2022-11-20 11:20:29,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 161 transitions, 1808 flow [2022-11-20 11:20:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:20:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:20:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 460 transitions. [2022-11-20 11:20:29,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.782312925170068 [2022-11-20 11:20:29,392 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 460 transitions. [2022-11-20 11:20:29,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 460 transitions. [2022-11-20 11:20:29,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:29,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 460 transitions. [2022-11-20 11:20:29,394 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) [2022-11-20 11:20:29,397 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) [2022-11-20 11:20:29,398 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) [2022-11-20 11:20:29,398 INFO L175 Difference]: Start difference. First operand has 138 places, 147 transitions, 1499 flow. Second operand 6 states and 460 transitions. [2022-11-20 11:20:29,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 161 transitions, 1808 flow [2022-11-20 11:20:29,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 161 transitions, 1554 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-20 11:20:29,417 INFO L231 Difference]: Finished difference. Result has 132 places, 144 transitions, 1305 flow [2022-11-20 11:20:29,418 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} [2022-11-20 11:20:29,419 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 53 predicate places. [2022-11-20 11:20:29,419 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 144 transitions, 1305 flow [2022-11-20 11:20:29,425 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) [2022-11-20 11:20:29,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:29,426 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] [2022-11-20 11:20:29,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:20:29,426 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1674632892, now seen corresponding path program 2 times [2022-11-20 11:20:29,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:29,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131451523] [2022-11-20 11:20:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:29,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:29,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131451523] [2022-11-20 11:20:29,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131451523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:29,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:29,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:20:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639556678] [2022-11-20 11:20:29,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:29,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:20:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:20:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:20:29,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-20 11:20:29,669 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) [2022-11-20 11:20:29,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:29,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-20 11:20:29,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:30,024 INFO L130 PetriNetUnfolder]: 189/608 cut-off events. [2022-11-20 11:20:30,025 INFO L131 PetriNetUnfolder]: For 2165/2195 co-relation queries the response was YES. [2022-11-20 11:20:30,028 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. [2022-11-20 11:20:30,032 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 73 selfloop transitions, 62 changer transitions 7/184 dead transitions. [2022-11-20 11:20:30,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 184 transitions, 1868 flow [2022-11-20 11:20:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:20:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:20:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 721 transitions. [2022-11-20 11:20:30,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6688311688311688 [2022-11-20 11:20:30,036 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 721 transitions. [2022-11-20 11:20:30,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 721 transitions. [2022-11-20 11:20:30,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:30,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 721 transitions. [2022-11-20 11:20:30,038 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) [2022-11-20 11:20:30,041 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) [2022-11-20 11:20:30,042 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) [2022-11-20 11:20:30,042 INFO L175 Difference]: Start difference. First operand has 132 places, 144 transitions, 1305 flow. Second operand 11 states and 721 transitions. [2022-11-20 11:20:30,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 184 transitions, 1868 flow [2022-11-20 11:20:30,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 184 transitions, 1790 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:20:30,058 INFO L231 Difference]: Finished difference. Result has 140 places, 143 transitions, 1356 flow [2022-11-20 11:20:30,059 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} [2022-11-20 11:20:30,060 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 61 predicate places. [2022-11-20 11:20:30,060 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 1356 flow [2022-11-20 11:20:30,060 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) [2022-11-20 11:20:30,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:30,061 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] [2022-11-20 11:20:30,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:20:30,061 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:30,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:30,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1656969402, now seen corresponding path program 3 times [2022-11-20 11:20:30,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:30,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527926255] [2022-11-20 11:20:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:30,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:30,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:30,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527926255] [2022-11-20 11:20:30,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527926255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:30,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:30,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:20:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034206842] [2022-11-20 11:20:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:30,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:20:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:20:30,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:20:30,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-20 11:20:30,277 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) [2022-11-20 11:20:30,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:30,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-20 11:20:30,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:30,670 INFO L130 PetriNetUnfolder]: 189/635 cut-off events. [2022-11-20 11:20:30,670 INFO L131 PetriNetUnfolder]: For 2480/2510 co-relation queries the response was YES. [2022-11-20 11:20:30,673 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. [2022-11-20 11:20:30,677 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 76 selfloop transitions, 63 changer transitions 3/184 dead transitions. [2022-11-20 11:20:30,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 184 transitions, 1913 flow [2022-11-20 11:20:30,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:20:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:20:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 718 transitions. [2022-11-20 11:20:30,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6660482374768089 [2022-11-20 11:20:30,680 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 718 transitions. [2022-11-20 11:20:30,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 718 transitions. [2022-11-20 11:20:30,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:30,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 718 transitions. [2022-11-20 11:20:30,683 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) [2022-11-20 11:20:30,685 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) [2022-11-20 11:20:30,686 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) [2022-11-20 11:20:30,686 INFO L175 Difference]: Start difference. First operand has 140 places, 143 transitions, 1356 flow. Second operand 11 states and 718 transitions. [2022-11-20 11:20:30,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 184 transitions, 1913 flow [2022-11-20 11:20:30,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 184 transitions, 1766 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-20 11:20:30,704 INFO L231 Difference]: Finished difference. Result has 142 places, 145 transitions, 1372 flow [2022-11-20 11:20:30,704 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} [2022-11-20 11:20:30,705 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 63 predicate places. [2022-11-20 11:20:30,705 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 145 transitions, 1372 flow [2022-11-20 11:20:30,705 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) [2022-11-20 11:20:30,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:30,706 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] [2022-11-20 11:20:30,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:20:30,706 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:30,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1451190643, now seen corresponding path program 1 times [2022-11-20 11:20:30,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:30,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587302646] [2022-11-20 11:20:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:30,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:30,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:30,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587302646] [2022-11-20 11:20:30,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587302646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:30,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:30,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:30,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311935586] [2022-11-20 11:20:30,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:30,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:30,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:30,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:30,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2022-11-20 11:20:30,803 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) [2022-11-20 11:20:30,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:30,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2022-11-20 11:20:30,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:30,954 INFO L130 PetriNetUnfolder]: 113/472 cut-off events. [2022-11-20 11:20:30,954 INFO L131 PetriNetUnfolder]: For 2274/2314 co-relation queries the response was YES. [2022-11-20 11:20:30,956 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. [2022-11-20 11:20:30,959 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 32 selfloop transitions, 56 changer transitions 0/155 dead transitions. [2022-11-20 11:20:30,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 155 transitions, 1672 flow [2022-11-20 11:20:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:20:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 525 transitions. [2022-11-20 11:20:30,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7653061224489796 [2022-11-20 11:20:30,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 525 transitions. [2022-11-20 11:20:30,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 525 transitions. [2022-11-20 11:20:30,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:30,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 525 transitions. [2022-11-20 11:20:30,964 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) [2022-11-20 11:20:30,965 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) [2022-11-20 11:20:30,966 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) [2022-11-20 11:20:30,966 INFO L175 Difference]: Start difference. First operand has 142 places, 145 transitions, 1372 flow. Second operand 7 states and 525 transitions. [2022-11-20 11:20:30,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 155 transitions, 1672 flow [2022-11-20 11:20:30,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 155 transitions, 1512 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-20 11:20:30,979 INFO L231 Difference]: Finished difference. Result has 137 places, 149 transitions, 1466 flow [2022-11-20 11:20:30,980 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} [2022-11-20 11:20:30,981 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 58 predicate places. [2022-11-20 11:20:30,981 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 149 transitions, 1466 flow [2022-11-20 11:20:30,982 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) [2022-11-20 11:20:30,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:30,982 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] [2022-11-20 11:20:30,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:20:30,982 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:30,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:30,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2102272510, now seen corresponding path program 1 times [2022-11-20 11:20:30,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:30,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380397555] [2022-11-20 11:20:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:30,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:31,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:31,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380397555] [2022-11-20 11:20:31,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380397555] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:31,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765802543] [2022-11-20 11:20:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:31,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:31,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:31,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:31,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:20:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:31,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:20:31,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:31,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:31,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765802543] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:20:31,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:20:31,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-11-20 11:20:31,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922452899] [2022-11-20 11:20:31,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:31,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:31,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:31,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:20:31,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:31,318 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) [2022-11-20 11:20:31,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:31,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:31,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:31,713 INFO L130 PetriNetUnfolder]: 208/699 cut-off events. [2022-11-20 11:20:31,714 INFO L131 PetriNetUnfolder]: For 2751/2781 co-relation queries the response was YES. [2022-11-20 11:20:31,719 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. [2022-11-20 11:20:31,724 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 116 selfloop transitions, 57 changer transitions 0/220 dead transitions. [2022-11-20 11:20:31,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 220 transitions, 2375 flow [2022-11-20 11:20:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:20:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:20:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 684 transitions. [2022-11-20 11:20:31,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7755102040816326 [2022-11-20 11:20:31,731 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 684 transitions. [2022-11-20 11:20:31,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 684 transitions. [2022-11-20 11:20:31,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:31,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 684 transitions. [2022-11-20 11:20:31,734 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) [2022-11-20 11:20:31,736 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) [2022-11-20 11:20:31,736 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) [2022-11-20 11:20:31,737 INFO L175 Difference]: Start difference. First operand has 137 places, 149 transitions, 1466 flow. Second operand 9 states and 684 transitions. [2022-11-20 11:20:31,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 220 transitions, 2375 flow [2022-11-20 11:20:31,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 220 transitions, 2325 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:31,760 INFO L231 Difference]: Finished difference. Result has 149 places, 185 transitions, 1959 flow [2022-11-20 11:20:31,761 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} [2022-11-20 11:20:31,761 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 70 predicate places. [2022-11-20 11:20:31,762 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 185 transitions, 1959 flow [2022-11-20 11:20:31,762 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) [2022-11-20 11:20:31,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:31,762 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] [2022-11-20 11:20:31,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:31,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 11:20:31,970 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash 480562596, now seen corresponding path program 1 times [2022-11-20 11:20:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:31,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634919399] [2022-11-20 11:20:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:31,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:32,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:32,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634919399] [2022-11-20 11:20:32,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634919399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:32,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:32,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:32,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773515458] [2022-11-20 11:20:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:32,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:32,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:32,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:32,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:32,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:32,038 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) [2022-11-20 11:20:32,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:32,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:32,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:32,367 INFO L130 PetriNetUnfolder]: 243/798 cut-off events. [2022-11-20 11:20:32,367 INFO L131 PetriNetUnfolder]: For 4875/4912 co-relation queries the response was YES. [2022-11-20 11:20:32,372 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. [2022-11-20 11:20:32,379 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 135 selfloop transitions, 86 changer transitions 2/270 dead transitions. [2022-11-20 11:20:32,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 270 transitions, 3263 flow [2022-11-20 11:20:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:20:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:20:32,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 682 transitions. [2022-11-20 11:20:32,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7732426303854876 [2022-11-20 11:20:32,382 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 682 transitions. [2022-11-20 11:20:32,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 682 transitions. [2022-11-20 11:20:32,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:32,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 682 transitions. [2022-11-20 11:20:32,385 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) [2022-11-20 11:20:32,387 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) [2022-11-20 11:20:32,388 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) [2022-11-20 11:20:32,388 INFO L175 Difference]: Start difference. First operand has 149 places, 185 transitions, 1959 flow. Second operand 9 states and 682 transitions. [2022-11-20 11:20:32,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 270 transitions, 3263 flow [2022-11-20 11:20:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 270 transitions, 3192 flow, removed 28 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:32,426 INFO L231 Difference]: Finished difference. Result has 161 places, 230 transitions, 2752 flow [2022-11-20 11:20:32,427 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} [2022-11-20 11:20:32,427 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 82 predicate places. [2022-11-20 11:20:32,428 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 230 transitions, 2752 flow [2022-11-20 11:20:32,428 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) [2022-11-20 11:20:32,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:32,429 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] [2022-11-20 11:20:32,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:20:32,429 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1551770848, now seen corresponding path program 2 times [2022-11-20 11:20:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:32,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128249556] [2022-11-20 11:20:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:32,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:32,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:32,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128249556] [2022-11-20 11:20:32,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128249556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:32,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:32,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:32,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037051861] [2022-11-20 11:20:32,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:32,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:32,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:32,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:32,489 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) [2022-11-20 11:20:32,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:32,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:32,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:32,825 INFO L130 PetriNetUnfolder]: 240/794 cut-off events. [2022-11-20 11:20:32,825 INFO L131 PetriNetUnfolder]: For 6492/6554 co-relation queries the response was YES. [2022-11-20 11:20:32,830 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. [2022-11-20 11:20:32,837 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 177 selfloop transitions, 40 changer transitions 10/274 dead transitions. [2022-11-20 11:20:32,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 274 transitions, 3668 flow [2022-11-20 11:20:32,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:20:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2022-11-20 11:20:32,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7842565597667639 [2022-11-20 11:20:32,840 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2022-11-20 11:20:32,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2022-11-20 11:20:32,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:32,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2022-11-20 11:20:32,843 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) [2022-11-20 11:20:32,844 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) [2022-11-20 11:20:32,845 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) [2022-11-20 11:20:32,845 INFO L175 Difference]: Start difference. First operand has 161 places, 230 transitions, 2752 flow. Second operand 7 states and 538 transitions. [2022-11-20 11:20:32,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 274 transitions, 3668 flow [2022-11-20 11:20:32,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 274 transitions, 3615 flow, removed 19 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:32,895 INFO L231 Difference]: Finished difference. Result has 168 places, 235 transitions, 2866 flow [2022-11-20 11:20:32,895 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} [2022-11-20 11:20:32,896 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 89 predicate places. [2022-11-20 11:20:32,896 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 235 transitions, 2866 flow [2022-11-20 11:20:32,897 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) [2022-11-20 11:20:32,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:32,897 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] [2022-11-20 11:20:32,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 11:20:32,898 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash -441433712, now seen corresponding path program 3 times [2022-11-20 11:20:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:32,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22669350] [2022-11-20 11:20:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:32,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:32,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:32,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22669350] [2022-11-20 11:20:32,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22669350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:32,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:32,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:32,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292708948] [2022-11-20 11:20:32,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:32,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:32,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:32,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:32,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:32,958 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) [2022-11-20 11:20:32,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:32,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:32,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:33,368 INFO L130 PetriNetUnfolder]: 252/867 cut-off events. [2022-11-20 11:20:33,370 INFO L131 PetriNetUnfolder]: For 7887/7961 co-relation queries the response was YES. [2022-11-20 11:20:33,376 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. [2022-11-20 11:20:33,393 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 189 selfloop transitions, 79 changer transitions 2/317 dead transitions. [2022-11-20 11:20:33,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 317 transitions, 4410 flow [2022-11-20 11:20:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 625 transitions. [2022-11-20 11:20:33,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971938775510204 [2022-11-20 11:20:33,397 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 625 transitions. [2022-11-20 11:20:33,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 625 transitions. [2022-11-20 11:20:33,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:33,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 625 transitions. [2022-11-20 11:20:33,401 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) [2022-11-20 11:20:33,403 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) [2022-11-20 11:20:33,404 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) [2022-11-20 11:20:33,404 INFO L175 Difference]: Start difference. First operand has 168 places, 235 transitions, 2866 flow. Second operand 8 states and 625 transitions. [2022-11-20 11:20:33,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 317 transitions, 4410 flow [2022-11-20 11:20:33,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 317 transitions, 4277 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-11-20 11:20:33,465 INFO L231 Difference]: Finished difference. Result has 176 places, 258 transitions, 3402 flow [2022-11-20 11:20:33,466 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} [2022-11-20 11:20:33,466 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 97 predicate places. [2022-11-20 11:20:33,467 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 258 transitions, 3402 flow [2022-11-20 11:20:33,468 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) [2022-11-20 11:20:33,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:33,468 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] [2022-11-20 11:20:33,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 11:20:33,469 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:33,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:33,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1631662016, now seen corresponding path program 1 times [2022-11-20 11:20:33,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:33,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282806002] [2022-11-20 11:20:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:33,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:33,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:33,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282806002] [2022-11-20 11:20:33,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282806002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:33,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:33,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:33,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629457201] [2022-11-20 11:20:33,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:33,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:33,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:33,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:33,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:33,547 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) [2022-11-20 11:20:33,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:33,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:33,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:34,024 INFO L130 PetriNetUnfolder]: 278/997 cut-off events. [2022-11-20 11:20:34,024 INFO L131 PetriNetUnfolder]: For 9393/9482 co-relation queries the response was YES. [2022-11-20 11:20:34,030 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. [2022-11-20 11:20:34,042 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 190 selfloop transitions, 92 changer transitions 2/331 dead transitions. [2022-11-20 11:20:34,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 331 transitions, 4799 flow [2022-11-20 11:20:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:34,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 627 transitions. [2022-11-20 11:20:34,044 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7997448979591837 [2022-11-20 11:20:34,044 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 627 transitions. [2022-11-20 11:20:34,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 627 transitions. [2022-11-20 11:20:34,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:34,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 627 transitions. [2022-11-20 11:20:34,047 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) [2022-11-20 11:20:34,049 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) [2022-11-20 11:20:34,050 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) [2022-11-20 11:20:34,050 INFO L175 Difference]: Start difference. First operand has 176 places, 258 transitions, 3402 flow. Second operand 8 states and 627 transitions. [2022-11-20 11:20:34,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 331 transitions, 4799 flow [2022-11-20 11:20:34,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 331 transitions, 4641 flow, removed 30 selfloop flow, removed 2 redundant places. [2022-11-20 11:20:34,117 INFO L231 Difference]: Finished difference. Result has 187 places, 276 transitions, 3870 flow [2022-11-20 11:20:34,117 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} [2022-11-20 11:20:34,122 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 108 predicate places. [2022-11-20 11:20:34,123 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 276 transitions, 3870 flow [2022-11-20 11:20:34,123 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) [2022-11-20 11:20:34,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:34,123 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] [2022-11-20 11:20:34,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 11:20:34,124 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:34,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:34,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1711036856, now seen corresponding path program 2 times [2022-11-20 11:20:34,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:34,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622388511] [2022-11-20 11:20:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:34,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:34,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622388511] [2022-11-20 11:20:34,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622388511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:34,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:34,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:34,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799883020] [2022-11-20 11:20:34,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:34,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:34,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:34,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:34,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:34,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:34,198 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) [2022-11-20 11:20:34,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:34,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:34,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:34,640 INFO L130 PetriNetUnfolder]: 272/964 cut-off events. [2022-11-20 11:20:34,640 INFO L131 PetriNetUnfolder]: For 10232/10303 co-relation queries the response was YES. [2022-11-20 11:20:34,647 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. [2022-11-20 11:20:34,654 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 197 selfloop transitions, 66 changer transitions 6/316 dead transitions. [2022-11-20 11:20:34,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 316 transitions, 4791 flow [2022-11-20 11:20:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:34,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 617 transitions. [2022-11-20 11:20:34,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7869897959183674 [2022-11-20 11:20:34,656 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 617 transitions. [2022-11-20 11:20:34,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 617 transitions. [2022-11-20 11:20:34,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:34,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 617 transitions. [2022-11-20 11:20:34,659 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) [2022-11-20 11:20:34,661 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) [2022-11-20 11:20:34,661 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) [2022-11-20 11:20:34,661 INFO L175 Difference]: Start difference. First operand has 187 places, 276 transitions, 3870 flow. Second operand 8 states and 617 transitions. [2022-11-20 11:20:34,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 316 transitions, 4791 flow [2022-11-20 11:20:34,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 316 transitions, 4770 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:34,740 INFO L231 Difference]: Finished difference. Result has 197 places, 276 transitions, 4041 flow [2022-11-20 11:20:34,741 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} [2022-11-20 11:20:34,745 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 118 predicate places. [2022-11-20 11:20:34,745 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 276 transitions, 4041 flow [2022-11-20 11:20:34,746 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) [2022-11-20 11:20:34,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:34,746 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] [2022-11-20 11:20:34,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 11:20:34,747 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:34,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1058665886, now seen corresponding path program 4 times [2022-11-20 11:20:34,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:34,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492035016] [2022-11-20 11:20:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:34,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:34,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:34,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492035016] [2022-11-20 11:20:34,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492035016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:34,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:34,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232372045] [2022-11-20 11:20:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:34,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:34,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:34,813 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) [2022-11-20 11:20:34,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:34,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:34,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:35,235 INFO L130 PetriNetUnfolder]: 256/897 cut-off events. [2022-11-20 11:20:35,236 INFO L131 PetriNetUnfolder]: For 10793/10858 co-relation queries the response was YES. [2022-11-20 11:20:35,243 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. [2022-11-20 11:20:35,249 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 194 selfloop transitions, 65 changer transitions 3/309 dead transitions. [2022-11-20 11:20:35,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 309 transitions, 4853 flow [2022-11-20 11:20:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 612 transitions. [2022-11-20 11:20:35,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7806122448979592 [2022-11-20 11:20:35,252 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 612 transitions. [2022-11-20 11:20:35,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 612 transitions. [2022-11-20 11:20:35,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:35,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 612 transitions. [2022-11-20 11:20:35,255 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) [2022-11-20 11:20:35,257 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) [2022-11-20 11:20:35,257 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) [2022-11-20 11:20:35,257 INFO L175 Difference]: Start difference. First operand has 197 places, 276 transitions, 4041 flow. Second operand 8 states and 612 transitions. [2022-11-20 11:20:35,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 309 transitions, 4853 flow [2022-11-20 11:20:35,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 309 transitions, 4790 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-20 11:20:35,387 INFO L231 Difference]: Finished difference. Result has 203 places, 272 transitions, 4113 flow [2022-11-20 11:20:35,389 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} [2022-11-20 11:20:35,390 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 124 predicate places. [2022-11-20 11:20:35,391 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 272 transitions, 4113 flow [2022-11-20 11:20:35,391 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) [2022-11-20 11:20:35,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:35,391 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] [2022-11-20 11:20:35,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 11:20:35,392 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:35,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:35,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1255129484, now seen corresponding path program 5 times [2022-11-20 11:20:35,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:35,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420021910] [2022-11-20 11:20:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:35,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:35,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420021910] [2022-11-20 11:20:35,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420021910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:35,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:35,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58511946] [2022-11-20 11:20:35,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:35,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:35,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:35,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:35,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:35,458 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) [2022-11-20 11:20:35,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:35,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:35,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:35,884 INFO L130 PetriNetUnfolder]: 241/827 cut-off events. [2022-11-20 11:20:35,885 INFO L131 PetriNetUnfolder]: For 11602/11666 co-relation queries the response was YES. [2022-11-20 11:20:35,891 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. [2022-11-20 11:20:35,898 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 165 selfloop transitions, 98 changer transitions 3/313 dead transitions. [2022-11-20 11:20:35,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 313 transitions, 5008 flow [2022-11-20 11:20:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 627 transitions. [2022-11-20 11:20:35,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7997448979591837 [2022-11-20 11:20:35,907 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 627 transitions. [2022-11-20 11:20:35,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 627 transitions. [2022-11-20 11:20:35,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:35,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 627 transitions. [2022-11-20 11:20:35,910 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) [2022-11-20 11:20:35,913 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) [2022-11-20 11:20:35,923 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) [2022-11-20 11:20:35,923 INFO L175 Difference]: Start difference. First operand has 203 places, 272 transitions, 4113 flow. Second operand 8 states and 627 transitions. [2022-11-20 11:20:35,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 313 transitions, 5008 flow [2022-11-20 11:20:36,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 313 transitions, 4908 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-20 11:20:36,016 INFO L231 Difference]: Finished difference. Result has 203 places, 266 transitions, 4174 flow [2022-11-20 11:20:36,017 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} [2022-11-20 11:20:36,018 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 124 predicate places. [2022-11-20 11:20:36,018 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 266 transitions, 4174 flow [2022-11-20 11:20:36,019 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) [2022-11-20 11:20:36,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:36,019 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] [2022-11-20 11:20:36,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 11:20:36,020 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:36,021 INFO L85 PathProgramCache]: Analyzing trace with hash 510391134, now seen corresponding path program 3 times [2022-11-20 11:20:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:36,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706740742] [2022-11-20 11:20:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:36,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:36,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:36,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706740742] [2022-11-20 11:20:36,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706740742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:36,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:36,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:36,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731771527] [2022-11-20 11:20:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:36,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:36,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:36,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:36,105 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) [2022-11-20 11:20:36,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:36,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:36,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:36,513 INFO L130 PetriNetUnfolder]: 230/796 cut-off events. [2022-11-20 11:20:36,514 INFO L131 PetriNetUnfolder]: For 12087/12136 co-relation queries the response was YES. [2022-11-20 11:20:36,519 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. [2022-11-20 11:20:36,525 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 168 selfloop transitions, 80 changer transitions 1/296 dead transitions. [2022-11-20 11:20:36,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 296 transitions, 4870 flow [2022-11-20 11:20:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 621 transitions. [2022-11-20 11:20:36,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7920918367346939 [2022-11-20 11:20:36,528 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 621 transitions. [2022-11-20 11:20:36,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 621 transitions. [2022-11-20 11:20:36,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:36,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 621 transitions. [2022-11-20 11:20:36,531 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) [2022-11-20 11:20:36,533 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) [2022-11-20 11:20:36,533 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) [2022-11-20 11:20:36,533 INFO L175 Difference]: Start difference. First operand has 203 places, 266 transitions, 4174 flow. Second operand 8 states and 621 transitions. [2022-11-20 11:20:36,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 296 transitions, 4870 flow [2022-11-20 11:20:36,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 296 transitions, 4839 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-20 11:20:36,614 INFO L231 Difference]: Finished difference. Result has 208 places, 262 transitions, 4253 flow [2022-11-20 11:20:36,615 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} [2022-11-20 11:20:36,616 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 129 predicate places. [2022-11-20 11:20:36,617 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 262 transitions, 4253 flow [2022-11-20 11:20:36,617 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) [2022-11-20 11:20:36,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:36,618 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] [2022-11-20 11:20:36,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 11:20:36,618 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:36,619 INFO L85 PathProgramCache]: Analyzing trace with hash 623223244, now seen corresponding path program 4 times [2022-11-20 11:20:36,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:36,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041037621] [2022-11-20 11:20:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:36,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:36,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041037621] [2022-11-20 11:20:36,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041037621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:36,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:36,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:36,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327840683] [2022-11-20 11:20:36,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:36,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:36,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:36,700 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) [2022-11-20 11:20:36,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:36,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:36,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:37,051 INFO L130 PetriNetUnfolder]: 228/793 cut-off events. [2022-11-20 11:20:37,051 INFO L131 PetriNetUnfolder]: For 12945/12977 co-relation queries the response was YES. [2022-11-20 11:20:37,057 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. [2022-11-20 11:20:37,063 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 189 selfloop transitions, 38 changer transitions 7/281 dead transitions. [2022-11-20 11:20:37,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 281 transitions, 4852 flow [2022-11-20 11:20:37,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:20:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 534 transitions. [2022-11-20 11:20:37,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7784256559766763 [2022-11-20 11:20:37,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 534 transitions. [2022-11-20 11:20:37,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 534 transitions. [2022-11-20 11:20:37,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:37,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 534 transitions. [2022-11-20 11:20:37,068 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) [2022-11-20 11:20:37,069 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) [2022-11-20 11:20:37,070 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) [2022-11-20 11:20:37,071 INFO L175 Difference]: Start difference. First operand has 208 places, 262 transitions, 4253 flow. Second operand 7 states and 534 transitions. [2022-11-20 11:20:37,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 281 transitions, 4852 flow [2022-11-20 11:20:37,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 281 transitions, 4754 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-20 11:20:37,156 INFO L231 Difference]: Finished difference. Result has 212 places, 257 transitions, 4118 flow [2022-11-20 11:20:37,156 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} [2022-11-20 11:20:37,157 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 133 predicate places. [2022-11-20 11:20:37,158 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 257 transitions, 4118 flow [2022-11-20 11:20:37,158 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) [2022-11-20 11:20:37,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:37,159 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] [2022-11-20 11:20:37,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 11:20:37,159 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash 966771398, now seen corresponding path program 5 times [2022-11-20 11:20:37,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:37,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13062916] [2022-11-20 11:20:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:37,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:37,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:37,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13062916] [2022-11-20 11:20:37,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13062916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:37,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:37,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975305948] [2022-11-20 11:20:37,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:37,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:37,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:37,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:37,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:37,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:37,227 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) [2022-11-20 11:20:37,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:37,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:37,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:37,647 INFO L130 PetriNetUnfolder]: 214/730 cut-off events. [2022-11-20 11:20:37,648 INFO L131 PetriNetUnfolder]: For 11692/11724 co-relation queries the response was YES. [2022-11-20 11:20:37,653 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. [2022-11-20 11:20:37,660 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 160 selfloop transitions, 53 changer transitions 2/262 dead transitions. [2022-11-20 11:20:37,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 262 transitions, 4356 flow [2022-11-20 11:20:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:20:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:20:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-11-20 11:20:37,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7742346938775511 [2022-11-20 11:20:37,664 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-11-20 11:20:37,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-11-20 11:20:37,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:37,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-11-20 11:20:37,667 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) [2022-11-20 11:20:37,669 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) [2022-11-20 11:20:37,670 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) [2022-11-20 11:20:37,670 INFO L175 Difference]: Start difference. First operand has 212 places, 257 transitions, 4118 flow. Second operand 8 states and 607 transitions. [2022-11-20 11:20:37,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 262 transitions, 4356 flow [2022-11-20 11:20:37,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 262 transitions, 4208 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-20 11:20:37,753 INFO L231 Difference]: Finished difference. Result has 211 places, 237 transitions, 3676 flow [2022-11-20 11:20:37,754 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} [2022-11-20 11:20:37,754 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 132 predicate places. [2022-11-20 11:20:37,755 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 237 transitions, 3676 flow [2022-11-20 11:20:37,755 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) [2022-11-20 11:20:37,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:37,755 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] [2022-11-20 11:20:37,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 11:20:37,756 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:37,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:37,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1619142368, now seen corresponding path program 6 times [2022-11-20 11:20:37,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:37,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699208277] [2022-11-20 11:20:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:37,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699208277] [2022-11-20 11:20:37,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699208277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:37,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:37,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:37,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778095328] [2022-11-20 11:20:37,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:37,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:37,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-20 11:20:37,830 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) [2022-11-20 11:20:37,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:37,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-20 11:20:37,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:38,145 INFO L130 PetriNetUnfolder]: 196/657 cut-off events. [2022-11-20 11:20:38,146 INFO L131 PetriNetUnfolder]: For 10407/10437 co-relation queries the response was YES. [2022-11-20 11:20:38,150 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. [2022-11-20 11:20:38,155 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 134 selfloop transitions, 52 changer transitions 3/236 dead transitions. [2022-11-20 11:20:38,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 236 transitions, 3808 flow [2022-11-20 11:20:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:38,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:20:38,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 530 transitions. [2022-11-20 11:20:38,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7725947521865889 [2022-11-20 11:20:38,168 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 530 transitions. [2022-11-20 11:20:38,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 530 transitions. [2022-11-20 11:20:38,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:38,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 530 transitions. [2022-11-20 11:20:38,173 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) [2022-11-20 11:20:38,177 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) [2022-11-20 11:20:38,177 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) [2022-11-20 11:20:38,177 INFO L175 Difference]: Start difference. First operand has 211 places, 237 transitions, 3676 flow. Second operand 7 states and 530 transitions. [2022-11-20 11:20:38,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 236 transitions, 3808 flow [2022-11-20 11:20:38,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 236 transitions, 3638 flow, removed 11 selfloop flow, removed 10 redundant places. [2022-11-20 11:20:38,234 INFO L231 Difference]: Finished difference. Result has 202 places, 217 transitions, 3206 flow [2022-11-20 11:20:38,234 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} [2022-11-20 11:20:38,235 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 123 predicate places. [2022-11-20 11:20:38,235 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 217 transitions, 3206 flow [2022-11-20 11:20:38,236 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) [2022-11-20 11:20:38,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:38,236 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] [2022-11-20 11:20:38,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 11:20:38,236 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:38,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1044760082, now seen corresponding path program 1 times [2022-11-20 11:20:38,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:38,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890471123] [2022-11-20 11:20:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:38,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:38,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890471123] [2022-11-20 11:20:38,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890471123] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:38,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929345556] [2022-11-20 11:20:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:38,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:38,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:38,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:38,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:20:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:38,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:20:38,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:38,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:39,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929345556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:20:39,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:20:39,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 11:20:39,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585222262] [2022-11-20 11:20:39,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:39,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:20:39,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:20:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:20:39,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-20 11:20:39,239 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) [2022-11-20 11:20:39,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:39,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-20 11:20:39,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:51,656 INFO L130 PetriNetUnfolder]: 2355/5411 cut-off events. [2022-11-20 11:20:51,656 INFO L131 PetriNetUnfolder]: For 68230/68230 co-relation queries the response was YES. [2022-11-20 11:20:51,686 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. [2022-11-20 11:20:51,730 INFO L137 encePairwiseOnDemand]: 81/98 looper letters, 696 selfloop transitions, 993 changer transitions 20/1747 dead transitions. [2022-11-20 11:20:51,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1747 transitions, 25220 flow [2022-11-20 11:20:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-11-20 11:20:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2022-11-20 11:20:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 13688 transitions. [2022-11-20 11:20:51,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6263384277477807 [2022-11-20 11:20:51,754 INFO L72 ComplementDD]: Start complementDD. Operand 223 states and 13688 transitions. [2022-11-20 11:20:51,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 13688 transitions. [2022-11-20 11:20:51,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:51,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 223 states and 13688 transitions. [2022-11-20 11:20:51,856 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) [2022-11-20 11:20:51,904 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) [2022-11-20 11:20:51,913 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) [2022-11-20 11:20:51,913 INFO L175 Difference]: Start difference. First operand has 202 places, 217 transitions, 3206 flow. Second operand 223 states and 13688 transitions. [2022-11-20 11:20:51,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1747 transitions, 25220 flow [2022-11-20 11:20:52,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 1747 transitions, 24160 flow, removed 16 selfloop flow, removed 12 redundant places. [2022-11-20 11:20:52,380 INFO L231 Difference]: Finished difference. Result has 446 places, 1205 transitions, 20464 flow [2022-11-20 11:20:52,381 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} [2022-11-20 11:20:52,381 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 367 predicate places. [2022-11-20 11:20:52,382 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 1205 transitions, 20464 flow [2022-11-20 11:20:52,382 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) [2022-11-20 11:20:52,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:52,383 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] [2022-11-20 11:20:52,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 11:20:52,590 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:20:52,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:52,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1061656894, now seen corresponding path program 1 times [2022-11-20 11:20:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:52,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509907837] [2022-11-20 11:20:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:52,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509907837] [2022-11-20 11:20:52,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509907837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:52,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801231972] [2022-11-20 11:20:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:52,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:52,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:52,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:52,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:20:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:52,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:20:52,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:53,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:53,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801231972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:20:53,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:20:53,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 11:20:53,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921126654] [2022-11-20 11:20:53,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:53,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:20:53,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:53,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:20:53,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:20:53,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-20 11:20:53,589 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) [2022-11-20 11:20:53,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:53,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-20 11:20:53,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:03,059 INFO L130 PetriNetUnfolder]: 2608/5908 cut-off events. [2022-11-20 11:21:03,059 INFO L131 PetriNetUnfolder]: For 83342/83342 co-relation queries the response was YES. [2022-11-20 11:21:03,093 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. [2022-11-20 11:21:03,139 INFO L137 encePairwiseOnDemand]: 82/98 looper letters, 718 selfloop transitions, 993 changer transitions 24/1773 dead transitions. [2022-11-20 11:21:03,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1773 transitions, 29440 flow [2022-11-20 11:21:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-11-20 11:21:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2022-11-20 11:21:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 9179 transitions. [2022-11-20 11:21:03,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6286125188330366 [2022-11-20 11:21:03,155 INFO L72 ComplementDD]: Start complementDD. Operand 149 states and 9179 transitions. [2022-11-20 11:21:03,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149 states and 9179 transitions. [2022-11-20 11:21:03,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:03,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 149 states and 9179 transitions. [2022-11-20 11:21:03,176 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) [2022-11-20 11:21:03,202 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) [2022-11-20 11:21:03,209 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) [2022-11-20 11:21:03,209 INFO L175 Difference]: Start difference. First operand has 446 places, 1205 transitions, 20464 flow. Second operand 149 states and 9179 transitions. [2022-11-20 11:21:03,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1773 transitions, 29440 flow [2022-11-20 11:21:04,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 1773 transitions, 28701 flow, removed 149 selfloop flow, removed 5 redundant places. [2022-11-20 11:21:04,329 INFO L231 Difference]: Finished difference. Result has 629 places, 1393 transitions, 25389 flow [2022-11-20 11:21:04,330 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} [2022-11-20 11:21:04,331 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 550 predicate places. [2022-11-20 11:21:04,331 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 1393 transitions, 25389 flow [2022-11-20 11:21:04,332 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) [2022-11-20 11:21:04,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:04,332 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, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:04,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:21:04,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 11:21:04,539 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:21:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1870779784, now seen corresponding path program 2 times [2022-11-20 11:21:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:04,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739722138] [2022-11-20 11:21:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:04,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:21:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:04,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739722138] [2022-11-20 11:21:04,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739722138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:21:04,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240375523] [2022-11-20 11:21:04,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:21:04,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:21:04,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:21:04,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:21:04,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:21:04,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:21:04,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:21:04,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:21:04,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:21:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:21:05,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:21:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:21:05,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240375523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:21:05,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:21:05,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 11:21:05,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097588682] [2022-11-20 11:21:05,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:21:05,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:21:05,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:21:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:21:05,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-20 11:21:05,616 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) [2022-11-20 11:21:05,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:05,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-20 11:21:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:22,096 INFO L130 PetriNetUnfolder]: 6225/14061 cut-off events. [2022-11-20 11:21:22,096 INFO L131 PetriNetUnfolder]: For 216420/216420 co-relation queries the response was YES. [2022-11-20 11:21:22,286 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. [2022-11-20 11:21:22,402 INFO L137 encePairwiseOnDemand]: 78/98 looper letters, 1069 selfloop transitions, 3057 changer transitions 62/4226 dead transitions. [2022-11-20 11:21:22,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 4226 transitions, 80181 flow [2022-11-20 11:21:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-11-20 11:21:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2022-11-20 11:21:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 10063 transitions. [2022-11-20 11:21:22,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6299611869287592 [2022-11-20 11:21:22,418 INFO L72 ComplementDD]: Start complementDD. Operand 163 states and 10063 transitions. [2022-11-20 11:21:22,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 10063 transitions. [2022-11-20 11:21:22,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:22,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 163 states and 10063 transitions. [2022-11-20 11:21:22,440 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) [2022-11-20 11:21:22,460 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) [2022-11-20 11:21:22,466 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) [2022-11-20 11:21:22,466 INFO L175 Difference]: Start difference. First operand has 629 places, 1393 transitions, 25389 flow. Second operand 163 states and 10063 transitions. [2022-11-20 11:21:22,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 784 places, 4226 transitions, 80181 flow [2022-11-20 11:21:26,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 4226 transitions, 77476 flow, removed 388 selfloop flow, removed 53 redundant places. [2022-11-20 11:21:26,672 INFO L231 Difference]: Finished difference. Result has 796 places, 3635 transitions, 74921 flow [2022-11-20 11:21:26,673 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} [2022-11-20 11:21:26,674 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 717 predicate places. [2022-11-20 11:21:26,674 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 3635 transitions, 74921 flow [2022-11-20 11:21:26,675 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) [2022-11-20 11:21:26,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:26,675 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] [2022-11-20 11:21:26,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:21:26,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 11:21:26,882 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:21:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash 490253768, now seen corresponding path program 2 times [2022-11-20 11:21:26,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:26,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104618270] [2022-11-20 11:21:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:26,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:21:27,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:27,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104618270] [2022-11-20 11:21:27,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104618270] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:21:27,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277579813] [2022-11-20 11:21:27,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:21:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:21:27,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:21:27,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:21:27,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:21:27,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:21:27,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:21:27,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:21:27,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:21:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:21:27,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:21:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:21:27,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277579813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:21:27,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:21:27,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 11:21:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371645330] [2022-11-20 11:21:27,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:21:27,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:21:27,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:21:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:21:27,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-20 11:21:27,800 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) [2022-11-20 11:21:27,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:27,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-20 11:21:27,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:22:08,116 INFO L130 PetriNetUnfolder]: 11525/24829 cut-off events. [2022-11-20 11:22:08,116 INFO L131 PetriNetUnfolder]: For 528013/528013 co-relation queries the response was YES. [2022-11-20 11:22:08,650 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. [2022-11-20 11:22:08,872 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 1746 selfloop transitions, 5060 changer transitions 108/6952 dead transitions. [2022-11-20 11:22:08,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 926 places, 6952 transitions, 154040 flow [2022-11-20 11:22:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-20 11:22:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2022-11-20 11:22:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 8274 transitions. [2022-11-20 11:22:08,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6348012889366272 [2022-11-20 11:22:08,888 INFO L72 ComplementDD]: Start complementDD. Operand 133 states and 8274 transitions. [2022-11-20 11:22:08,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 133 states and 8274 transitions. [2022-11-20 11:22:08,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:22:08,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 133 states and 8274 transitions. [2022-11-20 11:22:08,922 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) [2022-11-20 11:22:08,937 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) [2022-11-20 11:22:08,941 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) [2022-11-20 11:22:08,942 INFO L175 Difference]: Start difference. First operand has 796 places, 3635 transitions, 74921 flow. Second operand 133 states and 8274 transitions. [2022-11-20 11:22:08,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 926 places, 6952 transitions, 154040 flow [2022-11-20 11:22:25,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 919 places, 6952 transitions, 149431 flow, removed 372 selfloop flow, removed 7 redundant places. [2022-11-20 11:22:25,495 INFO L231 Difference]: Finished difference. Result has 989 places, 6241 transitions, 145969 flow [2022-11-20 11:22:25,498 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} [2022-11-20 11:22:25,499 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 910 predicate places. [2022-11-20 11:22:25,499 INFO L495 AbstractCegarLoop]: Abstraction has has 989 places, 6241 transitions, 145969 flow [2022-11-20 11:22:25,500 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) [2022-11-20 11:22:25,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:22:25,501 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] [2022-11-20 11:22:25,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:22:25,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:22:25,708 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:22:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash -857423534, now seen corresponding path program 3 times [2022-11-20 11:22:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:25,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216667914] [2022-11-20 11:22:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:25,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:25,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216667914] [2022-11-20 11:22:25,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216667914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:22:25,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467578855] [2022-11-20 11:22:25,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:22:25,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:22:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:22:25,922 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:22:25,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26710a95-a090-4c97-8fbc-4abb3c38b27f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:22:26,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:22:26,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:22:26,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:22:26,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:22:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:26,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:22:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:22:26,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467578855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:22:26,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:22:26,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 11:22:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875327212] [2022-11-20 11:22:26,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:22:26,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:22:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:22:26,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:22:26,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-20 11:22:26,594 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) [2022-11-20 11:22:26,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:26,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-20 11:22:26,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand