./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/fibonacci.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_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/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_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/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_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/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 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --- 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 10:41:42,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:41:42,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:41:42,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:41:42,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:41:42,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:41:42,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:41:42,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:41:42,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:41:42,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:41:42,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:41:42,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:41:42,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:41:42,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:41:42,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:41:42,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:41:42,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:41:42,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:41:42,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:41:42,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:41:42,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:41:42,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:41:42,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:41:42,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:41:42,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:41:42,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:41:42,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:41:42,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:41:42,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:41:42,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:41:42,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:41:42,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:41:42,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:41:42,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:41:42,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:41:42,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:41:42,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:41:42,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:41:42,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:41:42,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:41:42,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:41:42,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:41:42,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:41:42,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:41:42,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:41:42,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:41:42,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:41:42,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:41:42,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:41:42,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:41:42,791 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:41:42,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:41:42,793 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:41:42,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:41:42,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:41:42,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:41:42,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:41:42,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:41:42,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:41:42,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:41:42,796 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:41:42,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:41:42,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:41:42,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:41:42,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:41:42,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:41:42,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:41:42,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:41:42,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:41:42,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:41:42,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:41:42,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:41:42,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:41:42,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:41:42,801 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:41:42,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:41:42,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:41:42,802 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_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e [2022-11-20 10:41:43,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:41:43,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:41:43,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:41:43,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:41:43,220 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:41:43,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-20 10:41:46,448 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:41:46,793 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:41:46,794 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-20 10:41:46,803 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/data/fffc446b3/cf29f69cb4fb4ac39e6275b9f5c39183/FLAGcb5b6242e [2022-11-20 10:41:46,821 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/data/fffc446b3/cf29f69cb4fb4ac39e6275b9f5c39183 [2022-11-20 10:41:46,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:41:46,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:41:46,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:41:46,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:41:46,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:41:46,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:41:46" (1/1) ... [2022-11-20 10:41:46,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6e6ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:46, skipping insertion in model container [2022-11-20 10:41:46,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:41:46" (1/1) ... [2022-11-20 10:41:46,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:41:46,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:41:47,124 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_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-20 10:41:47,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:41:47,152 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:41:47,210 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_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-20 10:41:47,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:41:47,237 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:41:47,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47 WrapperNode [2022-11-20 10:41:47,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:41:47,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:41:47,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:41:47,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:41:47,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,327 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 222 [2022-11-20 10:41:47,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:41:47,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:41:47,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:41:47,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:41:47,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,391 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:41:47,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:41:47,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:41:47,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:41:47,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (1/1) ... [2022-11-20 10:41:47,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:41:47,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:41:47,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:41:47,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811ebf8-c666-4f96-ab3d-ee15d8d33fa1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:41:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:41:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:41:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:41:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:41:47,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:41:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:41:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:41:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:41:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:41:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:41:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:41:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:41:47,515 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 10:41:47,646 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:41:47,649 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:41:48,374 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:41:48,389 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:41:48,389 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:41:48,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:41:48 BoogieIcfgContainer [2022-11-20 10:41:48,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:41:48,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:41:48,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:41:48,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:41:48,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:41:46" (1/3) ... [2022-11-20 10:41:48,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@880f817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:41:48, skipping insertion in model container [2022-11-20 10:41:48,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:47" (2/3) ... [2022-11-20 10:41:48,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@880f817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:41:48, skipping insertion in model container [2022-11-20 10:41:48,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:41:48" (3/3) ... [2022-11-20 10:41:48,405 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2022-11-20 10:41:48,417 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:41:48,431 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:41:48,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-20 10:41:48,432 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:41:48,586 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:41:48,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 315 transitions, 646 flow [2022-11-20 10:41:48,798 INFO L130 PetriNetUnfolder]: 22/313 cut-off events. [2022-11-20 10:41:48,799 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:41:48,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 313 events. 22/313 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 597 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2022-11-20 10:41:48,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 315 transitions, 646 flow [2022-11-20 10:41:48,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 294 transitions, 597 flow [2022-11-20 10:41:48,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:41:48,844 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;@269a13be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:41:48,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-11-20 10:41:48,868 INFO L130 PetriNetUnfolder]: 3/88 cut-off events. [2022-11-20 10:41:48,868 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:41:48,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:41:48,870 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:48,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:41:48,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1624898739, now seen corresponding path program 1 times [2022-11-20 10:41:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:48,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416921456] [2022-11-20 10:41:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:49,561 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 10:41:49,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:49,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416921456] [2022-11-20 10:41:49,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416921456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:49,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:49,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:41:49,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249040525] [2022-11-20 10:41:49,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:49,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:41:49,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:49,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:41:49,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:41:49,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-20 10:41:49,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 294 transitions, 597 flow. Second operand has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states 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 10:41:49,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:41:49,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-20 10:41:49,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:41:50,361 INFO L130 PetriNetUnfolder]: 80/945 cut-off events. [2022-11-20 10:41:50,361 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-20 10:41:50,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 945 events. 80/945 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3915 event pairs, 1 based on Foata normal form. 240/1015 useless extension candidates. Maximal degree in co-relation 1133. Up to 54 conditions per place. [2022-11-20 10:41:50,450 INFO L137 encePairwiseOnDemand]: 294/315 looper letters, 60 selfloop transitions, 10 changer transitions 1/322 dead transitions. [2022-11-20 10:41:50,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 322 transitions, 817 flow [2022-11-20 10:41:50,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:41:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:41:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2277 transitions. [2022-11-20 10:41:50,476 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9035714285714286 [2022-11-20 10:41:50,477 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2277 transitions. [2022-11-20 10:41:50,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2277 transitions. [2022-11-20 10:41:50,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:41:50,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2277 transitions. [2022-11-20 10:41:50,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 284.625) internal successors, (2277), 8 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states 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 10:41:50,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:41:50,517 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:41:50,519 INFO L175 Difference]: Start difference. First operand has 280 places, 294 transitions, 597 flow. Second operand 8 states and 2277 transitions. [2022-11-20 10:41:50,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 322 transitions, 817 flow [2022-11-20 10:41:50,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 322 transitions, 801 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:41:50,538 INFO L231 Difference]: Finished difference. Result has 290 places, 289 transitions, 636 flow [2022-11-20 10:41:50,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=290, PETRI_TRANSITIONS=289} [2022-11-20 10:41:50,547 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 10 predicate places. [2022-11-20 10:41:50,547 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 289 transitions, 636 flow [2022-11-20 10:41:50,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states 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 10:41:50,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:41:50,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:50,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:41:50,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:41:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1167745870, now seen corresponding path program 1 times [2022-11-20 10:41:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:50,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931618782] [2022-11-20 10:41:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:50,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:50,704 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 10:41:50,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:50,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931618782] [2022-11-20 10:41:50,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931618782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:50,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:50,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:41:50,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856263412] [2022-11-20 10:41:50,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:50,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:41:50,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:41:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:41:50,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-20 10:41:50,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 289 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 10:41:50,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:41:50,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-20 10:41:50,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:41:51,317 INFO L130 PetriNetUnfolder]: 102/1224 cut-off events. [2022-11-20 10:41:51,317 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-20 10:41:51,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 1224 events. 102/1224 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5936 event pairs, 30 based on Foata normal form. 8/1024 useless extension candidates. Maximal degree in co-relation 1524. Up to 105 conditions per place. [2022-11-20 10:41:51,344 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 36 selfloop transitions, 6 changer transitions 0/301 dead transitions. [2022-11-20 10:41:51,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 301 transitions, 749 flow [2022-11-20 10:41:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:41:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:41:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-20 10:41:51,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-20 10:41:51,349 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-20 10:41:51,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-20 10:41:51,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:41:51,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-20 10:41:51,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 10:41:51,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:41:51,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:41:51,359 INFO L175 Difference]: Start difference. First operand has 290 places, 289 transitions, 636 flow. Second operand 4 states and 1140 transitions. [2022-11-20 10:41:51,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 301 transitions, 749 flow [2022-11-20 10:41:51,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 301 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:41:51,371 INFO L231 Difference]: Finished difference. Result has 293 places, 291 transitions, 674 flow [2022-11-20 10:41:51,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=674, PETRI_PLACES=293, PETRI_TRANSITIONS=291} [2022-11-20 10:41:51,373 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 13 predicate places. [2022-11-20 10:41:51,374 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 291 transitions, 674 flow [2022-11-20 10:41:51,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 10:41:51,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:41:51,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:51,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:41:51,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:41:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1355556881, now seen corresponding path program 1 times [2022-11-20 10:41:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:51,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774780892] [2022-11-20 10:41:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:51,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:51,613 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 10:41:51,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:51,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774780892] [2022-11-20 10:41:51,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774780892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:51,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:51,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:41:51,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953212051] [2022-11-20 10:41:51,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:51,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:41:51,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:51,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:41:51,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:41:51,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-20 10:41:51,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 291 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 10:41:51,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:41:51,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-20 10:41:51,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:41:53,066 INFO L130 PetriNetUnfolder]: 382/2951 cut-off events. [2022-11-20 10:41:53,066 INFO L131 PetriNetUnfolder]: For 328/333 co-relation queries the response was YES. [2022-11-20 10:41:53,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 2951 events. 382/2951 cut-off events. For 328/333 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 27695 event pairs, 0 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 3620. Up to 294 conditions per place. [2022-11-20 10:41:53,131 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 57 selfloop transitions, 10 changer transitions 0/327 dead transitions. [2022-11-20 10:41:53,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 327 transitions, 885 flow [2022-11-20 10:41:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:41:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:41:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2228 transitions. [2022-11-20 10:41:53,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841269841269841 [2022-11-20 10:41:53,138 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2228 transitions. [2022-11-20 10:41:53,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2228 transitions. [2022-11-20 10:41:53,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:41:53,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2228 transitions. [2022-11-20 10:41:53,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 278.5) internal successors, (2228), 8 states have internal predecessors, (2228), 0 states have call successors, (0), 0 states 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 10:41:53,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:41:53,157 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:41:53,157 INFO L175 Difference]: Start difference. First operand has 293 places, 291 transitions, 674 flow. Second operand 8 states and 2228 transitions. [2022-11-20 10:41:53,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 327 transitions, 885 flow [2022-11-20 10:41:53,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 327 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:41:53,167 INFO L231 Difference]: Finished difference. Result has 306 places, 298 transitions, 742 flow [2022-11-20 10:41:53,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=306, PETRI_TRANSITIONS=298} [2022-11-20 10:41:53,168 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 26 predicate places. [2022-11-20 10:41:53,169 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 298 transitions, 742 flow [2022-11-20 10:41:53,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 10:41:53,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:41:53,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:53,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:41:53,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:41:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash -927408762, now seen corresponding path program 1 times [2022-11-20 10:41:53,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:53,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652872976] [2022-11-20 10:41:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:53,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:53,309 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 10:41:53,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:53,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652872976] [2022-11-20 10:41:53,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652872976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:53,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:53,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:41:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814995112] [2022-11-20 10:41:53,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:41:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:41:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:41:53,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-20 10:41:53,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 298 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 10:41:53,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:41:53,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-20 10:41:53,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:41:55,139 INFO L130 PetriNetUnfolder]: 514/4334 cut-off events. [2022-11-20 10:41:55,140 INFO L131 PetriNetUnfolder]: For 624/629 co-relation queries the response was YES. [2022-11-20 10:41:55,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5513 conditions, 4334 events. 514/4334 cut-off events. For 624/629 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41832 event pairs, 180 based on Foata normal form. 28/3321 useless extension candidates. Maximal degree in co-relation 5424. Up to 427 conditions per place. [2022-11-20 10:41:55,242 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 35 selfloop transitions, 6 changer transitions 0/309 dead transitions. [2022-11-20 10:41:55,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 309 transitions, 848 flow [2022-11-20 10:41:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:41:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:41:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2022-11-20 10:41:55,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.903968253968254 [2022-11-20 10:41:55,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2022-11-20 10:41:55,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2022-11-20 10:41:55,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:41:55,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2022-11-20 10:41:55,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 10:41:55,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:41:55,259 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:41:55,259 INFO L175 Difference]: Start difference. First operand has 306 places, 298 transitions, 742 flow. Second operand 4 states and 1139 transitions. [2022-11-20 10:41:55,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 309 transitions, 848 flow [2022-11-20 10:41:55,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 309 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:41:55,273 INFO L231 Difference]: Finished difference. Result has 310 places, 300 transitions, 780 flow [2022-11-20 10:41:55,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=780, PETRI_PLACES=310, PETRI_TRANSITIONS=300} [2022-11-20 10:41:55,275 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 30 predicate places. [2022-11-20 10:41:55,275 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 300 transitions, 780 flow [2022-11-20 10:41:55,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 10:41:55,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:41:55,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:55,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:41:55,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:41:55,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1934126745, now seen corresponding path program 1 times [2022-11-20 10:41:55,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:55,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056647882] [2022-11-20 10:41:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:55,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:55,374 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 10:41:55,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:55,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056647882] [2022-11-20 10:41:55,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056647882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:55,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:55,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:41:55,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045533270] [2022-11-20 10:41:55,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:55,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:41:55,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:41:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:41:55,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-20 10:41:55,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 300 transitions, 780 flow. Second operand has 4 states, 4 states have (on average 277.25) internal successors, (1109), 4 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states 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 10:41:55,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:41:55,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-20 10:41:55,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:41:56,291 INFO L130 PetriNetUnfolder]: 110/1602 cut-off events. [2022-11-20 10:41:56,292 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-11-20 10:41:56,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 1602 events. 110/1602 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9018 event pairs, 24 based on Foata normal form. 4/1334 useless extension candidates. Maximal degree in co-relation 2004. Up to 95 conditions per place. [2022-11-20 10:41:56,380 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 37 selfloop transitions, 5 changer transitions 0/310 dead transitions. [2022-11-20 10:41:56,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 310 transitions, 889 flow [2022-11-20 10:41:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:41:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:41:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1138 transitions. [2022-11-20 10:41:56,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9031746031746032 [2022-11-20 10:41:56,385 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1138 transitions. [2022-11-20 10:41:56,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1138 transitions. [2022-11-20 10:41:56,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:41:56,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1138 transitions. [2022-11-20 10:41:56,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states 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 10:41:56,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:41:56,393 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:41:56,394 INFO L175 Difference]: Start difference. First operand has 310 places, 300 transitions, 780 flow. Second operand 4 states and 1138 transitions. [2022-11-20 10:41:56,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 310 transitions, 889 flow [2022-11-20 10:41:56,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 310 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:41:56,406 INFO L231 Difference]: Finished difference. Result has 313 places, 300 transitions, 791 flow [2022-11-20 10:41:56,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=791, PETRI_PLACES=313, PETRI_TRANSITIONS=300} [2022-11-20 10:41:56,411 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 33 predicate places. [2022-11-20 10:41:56,411 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 300 transitions, 791 flow [2022-11-20 10:41:56,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.25) internal successors, (1109), 4 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states 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 10:41:56,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:41:56,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:56,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:41:56,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:41:56,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:56,415 INFO L85 PathProgramCache]: Analyzing trace with hash -171612259, now seen corresponding path program 1 times [2022-11-20 10:41:56,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:56,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017987417] [2022-11-20 10:41:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:56,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:56,588 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 10:41:56,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:56,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017987417] [2022-11-20 10:41:56,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017987417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:56,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:56,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:41:56,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044055896] [2022-11-20 10:41:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:56,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:41:56,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:41:56,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:41:56,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-20 10:41:56,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 300 transitions, 791 flow. Second operand has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states 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 10:41:56,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:41:56,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-20 10:41:56,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:41:57,547 INFO L130 PetriNetUnfolder]: 113/1609 cut-off events. [2022-11-20 10:41:57,548 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-11-20 10:41:57,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 1609 events. 113/1609 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9152 event pairs, 0 based on Foata normal form. 0/1339 useless extension candidates. Maximal degree in co-relation 1832. Up to 120 conditions per place. [2022-11-20 10:41:57,626 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 50 selfloop transitions, 11 changer transitions 0/322 dead transitions. [2022-11-20 10:41:57,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 322 transitions, 987 flow [2022-11-20 10:41:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:41:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:41:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2219 transitions. [2022-11-20 10:41:57,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8805555555555555 [2022-11-20 10:41:57,634 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2219 transitions. [2022-11-20 10:41:57,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2219 transitions. [2022-11-20 10:41:57,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:41:57,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2219 transitions. [2022-11-20 10:41:57,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.375) internal successors, (2219), 8 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 10:41:57,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:41:57,651 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:41:57,651 INFO L175 Difference]: Start difference. First operand has 313 places, 300 transitions, 791 flow. Second operand 8 states and 2219 transitions. [2022-11-20 10:41:57,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 322 transitions, 987 flow [2022-11-20 10:41:57,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 322 transitions, 975 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:41:57,662 INFO L231 Difference]: Finished difference. Result has 321 places, 302 transitions, 838 flow [2022-11-20 10:41:57,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=321, PETRI_TRANSITIONS=302} [2022-11-20 10:41:57,666 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 41 predicate places. [2022-11-20 10:41:57,666 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 302 transitions, 838 flow [2022-11-20 10:41:57,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states 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 10:41:57,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:41:57,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:57,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:41:57,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:41:57,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash -835270080, now seen corresponding path program 1 times [2022-11-20 10:41:57,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:57,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485141078] [2022-11-20 10:41:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:57,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:57,781 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 10:41:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:57,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485141078] [2022-11-20 10:41:57,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485141078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:57,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:57,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:41:57,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853189454] [2022-11-20 10:41:57,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:57,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:41:57,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:57,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:41:57,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:41:57,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 315 [2022-11-20 10:41:57,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 302 transitions, 838 flow. Second operand has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 10:41:57,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:41:57,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 315 [2022-11-20 10:41:57,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:41:58,856 INFO L130 PetriNetUnfolder]: 125/1627 cut-off events. [2022-11-20 10:41:58,856 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-11-20 10:41:58,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1627 events. 125/1627 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9356 event pairs, 37 based on Foata normal form. 0/1361 useless extension candidates. Maximal degree in co-relation 2126. Up to 128 conditions per place. [2022-11-20 10:41:58,954 INFO L137 encePairwiseOnDemand]: 307/315 looper letters, 44 selfloop transitions, 9 changer transitions 0/317 dead transitions. [2022-11-20 10:41:58,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 317 transitions, 973 flow [2022-11-20 10:41:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:41:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:41:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1674 transitions. [2022-11-20 10:41:58,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-20 10:41:58,961 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1674 transitions. [2022-11-20 10:41:58,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1674 transitions. [2022-11-20 10:41:58,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:41:58,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1674 transitions. [2022-11-20 10:41:58,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states 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 10:41:58,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 10:41:58,973 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 10:41:58,974 INFO L175 Difference]: Start difference. First operand has 321 places, 302 transitions, 838 flow. Second operand 6 states and 1674 transitions. [2022-11-20 10:41:58,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 317 transitions, 973 flow [2022-11-20 10:41:58,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 317 transitions, 949 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-20 10:41:58,988 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 847 flow [2022-11-20 10:41:58,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=847, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2022-11-20 10:41:58,990 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 41 predicate places. [2022-11-20 10:41:58,990 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 847 flow [2022-11-20 10:41:58,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 10:41:58,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:41:58,991 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, 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 10:41:58,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:41:58,992 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:41:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -52923283, now seen corresponding path program 1 times [2022-11-20 10:41:58,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:58,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19609536] [2022-11-20 10:41:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:58,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:59,103 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 10:41:59,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:59,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19609536] [2022-11-20 10:41:59,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19609536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:59,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:59,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:41:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445033472] [2022-11-20 10:41:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:59,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:41:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:41:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:41:59,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-20 10:41:59,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 847 flow. Second operand has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states 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 10:41:59,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:41:59,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-20 10:41:59,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:00,774 INFO L130 PetriNetUnfolder]: 498/4323 cut-off events. [2022-11-20 10:42:00,774 INFO L131 PetriNetUnfolder]: For 935/940 co-relation queries the response was YES. [2022-11-20 10:42:00,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 4323 events. 498/4323 cut-off events. For 935/940 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41792 event pairs, 144 based on Foata normal form. 14/3315 useless extension candidates. Maximal degree in co-relation 5614. Up to 397 conditions per place. [2022-11-20 10:42:00,861 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 36 selfloop transitions, 5 changer transitions 0/313 dead transitions. [2022-11-20 10:42:00,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 313 transitions, 949 flow [2022-11-20 10:42:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:42:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:42:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1137 transitions. [2022-11-20 10:42:00,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023809523809524 [2022-11-20 10:42:00,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1137 transitions. [2022-11-20 10:42:00,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1137 transitions. [2022-11-20 10:42:00,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:00,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1137 transitions. [2022-11-20 10:42:00,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states 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 10:42:00,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:42:00,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:42:00,899 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 847 flow. Second operand 4 states and 1137 transitions. [2022-11-20 10:42:00,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 313 transitions, 949 flow [2022-11-20 10:42:00,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 313 transitions, 933 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-20 10:42:00,911 INFO L231 Difference]: Finished difference. Result has 322 places, 304 transitions, 846 flow [2022-11-20 10:42:00,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=846, PETRI_PLACES=322, PETRI_TRANSITIONS=304} [2022-11-20 10:42:00,916 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 42 predicate places. [2022-11-20 10:42:00,916 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 304 transitions, 846 flow [2022-11-20 10:42:00,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states 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 10:42:00,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:00,917 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, 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 10:42:00,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:42:00,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1640620869, now seen corresponding path program 1 times [2022-11-20 10:42:00,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:00,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831637955] [2022-11-20 10:42:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:00,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:01,055 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 10:42:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:01,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831637955] [2022-11-20 10:42:01,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831637955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:01,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:01,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:42:01,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552292881] [2022-11-20 10:42:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:01,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:42:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:01,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:42:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:42:01,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-20 10:42:01,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 304 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 10:42:01,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:01,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-20 10:42:01,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:02,845 INFO L130 PetriNetUnfolder]: 516/4357 cut-off events. [2022-11-20 10:42:02,845 INFO L131 PetriNetUnfolder]: For 1134/1139 co-relation queries the response was YES. [2022-11-20 10:42:02,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5887 conditions, 4357 events. 516/4357 cut-off events. For 1134/1139 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 44995 event pairs, 0 based on Foata normal form. 0/3338 useless extension candidates. Maximal degree in co-relation 5783. Up to 497 conditions per place. [2022-11-20 10:42:02,931 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 48 selfloop transitions, 11 changer transitions 0/324 dead transitions. [2022-11-20 10:42:02,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 324 transitions, 1027 flow [2022-11-20 10:42:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:42:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:42:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2217 transitions. [2022-11-20 10:42:02,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2022-11-20 10:42:02,937 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2217 transitions. [2022-11-20 10:42:02,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2217 transitions. [2022-11-20 10:42:02,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:02,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2217 transitions. [2022-11-20 10:42:02,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states 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 10:42:02,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:42:02,952 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:42:02,952 INFO L175 Difference]: Start difference. First operand has 322 places, 304 transitions, 846 flow. Second operand 8 states and 2217 transitions. [2022-11-20 10:42:02,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 324 transitions, 1027 flow [2022-11-20 10:42:02,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 324 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:42:02,964 INFO L231 Difference]: Finished difference. Result has 330 places, 306 transitions, 893 flow [2022-11-20 10:42:02,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=893, PETRI_PLACES=330, PETRI_TRANSITIONS=306} [2022-11-20 10:42:02,966 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 50 predicate places. [2022-11-20 10:42:02,966 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 306 transitions, 893 flow [2022-11-20 10:42:02,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 10:42:02,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:02,967 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, 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 10:42:02,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:42:02,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2044668126, now seen corresponding path program 1 times [2022-11-20 10:42:02,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:02,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694967320] [2022-11-20 10:42:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:02,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:03,138 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 10:42:03,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:03,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694967320] [2022-11-20 10:42:03,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694967320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:03,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:03,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:42:03,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589488598] [2022-11-20 10:42:03,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:03,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:42:03,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:03,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:42:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:42:03,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-20 10:42:03,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 306 transitions, 893 flow. Second operand has 8 states, 8 states have (on average 266.125) internal successors, (2129), 8 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states 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 10:42:03,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:03,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-20 10:42:03,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:04,491 INFO L130 PetriNetUnfolder]: 150/2135 cut-off events. [2022-11-20 10:42:04,492 INFO L131 PetriNetUnfolder]: For 426/426 co-relation queries the response was YES. [2022-11-20 10:42:04,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 2135 events. 150/2135 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13838 event pairs, 2 based on Foata normal form. 0/1787 useless extension candidates. Maximal degree in co-relation 2294. Up to 91 conditions per place. [2022-11-20 10:42:04,571 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 66 selfloop transitions, 21 changer transitions 0/345 dead transitions. [2022-11-20 10:42:04,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 345 transitions, 1191 flow [2022-11-20 10:42:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:42:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:42:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3247 transitions. [2022-11-20 10:42:04,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858994708994709 [2022-11-20 10:42:04,583 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3247 transitions. [2022-11-20 10:42:04,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3247 transitions. [2022-11-20 10:42:04,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:04,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3247 transitions. [2022-11-20 10:42:04,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states 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 10:42:04,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 10:42:04,608 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 10:42:04,608 INFO L175 Difference]: Start difference. First operand has 330 places, 306 transitions, 893 flow. Second operand 12 states and 3247 transitions. [2022-11-20 10:42:04,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 345 transitions, 1191 flow [2022-11-20 10:42:04,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 345 transitions, 1179 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:42:04,622 INFO L231 Difference]: Finished difference. Result has 341 places, 316 transitions, 1001 flow [2022-11-20 10:42:04,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1001, PETRI_PLACES=341, PETRI_TRANSITIONS=316} [2022-11-20 10:42:04,625 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 61 predicate places. [2022-11-20 10:42:04,625 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 316 transitions, 1001 flow [2022-11-20 10:42:04,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.125) internal successors, (2129), 8 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states 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 10:42:04,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:04,627 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, 1, 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 10:42:04,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:42:04,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1039798336, now seen corresponding path program 1 times [2022-11-20 10:42:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:04,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296280143] [2022-11-20 10:42:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:04,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:04,813 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 10:42:04,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:04,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296280143] [2022-11-20 10:42:04,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296280143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:04,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:04,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:42:04,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014543530] [2022-11-20 10:42:04,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:04,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:42:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:04,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:42:04,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:42:04,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-20 10:42:04,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 316 transitions, 1001 flow. Second operand has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 10:42:04,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:04,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-20 10:42:04,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:06,070 INFO L130 PetriNetUnfolder]: 128/1634 cut-off events. [2022-11-20 10:42:06,070 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2022-11-20 10:42:06,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 1634 events. 128/1634 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9444 event pairs, 1 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 2115. Up to 84 conditions per place. [2022-11-20 10:42:06,140 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 65 selfloop transitions, 20 changer transitions 0/349 dead transitions. [2022-11-20 10:42:06,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 349 transitions, 1278 flow [2022-11-20 10:42:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:42:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:42:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3249 transitions. [2022-11-20 10:42:06,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-20 10:42:06,149 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3249 transitions. [2022-11-20 10:42:06,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3249 transitions. [2022-11-20 10:42:06,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:06,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3249 transitions. [2022-11-20 10:42:06,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.75) internal successors, (3249), 12 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states 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 10:42:06,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 10:42:06,169 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 10:42:06,169 INFO L175 Difference]: Start difference. First operand has 341 places, 316 transitions, 1001 flow. Second operand 12 states and 3249 transitions. [2022-11-20 10:42:06,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 349 transitions, 1278 flow [2022-11-20 10:42:06,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 349 transitions, 1262 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 10:42:06,181 INFO L231 Difference]: Finished difference. Result has 352 places, 323 transitions, 1086 flow [2022-11-20 10:42:06,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1086, PETRI_PLACES=352, PETRI_TRANSITIONS=323} [2022-11-20 10:42:06,183 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 72 predicate places. [2022-11-20 10:42:06,183 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 323 transitions, 1086 flow [2022-11-20 10:42:06,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 10:42:06,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:06,184 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, 1, 1, 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 10:42:06,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:42:06,185 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:06,185 INFO L85 PathProgramCache]: Analyzing trace with hash 491699742, now seen corresponding path program 1 times [2022-11-20 10:42:06,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:06,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806769601] [2022-11-20 10:42:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:06,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:06,257 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 10:42:06,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806769601] [2022-11-20 10:42:06,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806769601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:06,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:06,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:42:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498972849] [2022-11-20 10:42:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:42:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:42:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:42:06,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-20 10:42:06,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 323 transitions, 1086 flow. Second operand has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 10:42:06,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:06,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-20 10:42:06,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:08,088 INFO L130 PetriNetUnfolder]: 578/4955 cut-off events. [2022-11-20 10:42:08,088 INFO L131 PetriNetUnfolder]: For 1598/1603 co-relation queries the response was YES. [2022-11-20 10:42:08,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6780 conditions, 4955 events. 578/4955 cut-off events. For 1598/1603 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 51579 event pairs, 222 based on Foata normal form. 14/3804 useless extension candidates. Maximal degree in co-relation 6664. Up to 525 conditions per place. [2022-11-20 10:42:08,168 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 36 selfloop transitions, 5 changer transitions 0/331 dead transitions. [2022-11-20 10:42:08,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 331 transitions, 1188 flow [2022-11-20 10:42:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:42:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:42:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1135 transitions. [2022-11-20 10:42:08,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9007936507936508 [2022-11-20 10:42:08,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1135 transitions. [2022-11-20 10:42:08,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1135 transitions. [2022-11-20 10:42:08,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:08,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1135 transitions. [2022-11-20 10:42:08,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 10:42:08,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:42:08,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:42:08,180 INFO L175 Difference]: Start difference. First operand has 352 places, 323 transitions, 1086 flow. Second operand 4 states and 1135 transitions. [2022-11-20 10:42:08,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 331 transitions, 1188 flow [2022-11-20 10:42:08,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 331 transitions, 1162 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-20 10:42:08,196 INFO L231 Difference]: Finished difference. Result has 349 places, 323 transitions, 1082 flow [2022-11-20 10:42:08,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1082, PETRI_PLACES=349, PETRI_TRANSITIONS=323} [2022-11-20 10:42:08,197 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 69 predicate places. [2022-11-20 10:42:08,198 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 323 transitions, 1082 flow [2022-11-20 10:42:08,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 10:42:08,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:08,199 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, 1, 1, 1, 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 10:42:08,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:42:08,199 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:08,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1708205948, now seen corresponding path program 1 times [2022-11-20 10:42:08,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:08,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330020590] [2022-11-20 10:42:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:08,340 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 10:42:08,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:08,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330020590] [2022-11-20 10:42:08,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330020590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:08,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:08,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:42:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493621502] [2022-11-20 10:42:08,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:08,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:42:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:08,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:42:08,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:42:08,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-20 10:42:08,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 323 transitions, 1082 flow. Second operand has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states 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 10:42:08,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:08,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-20 10:42:08,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:09,312 INFO L130 PetriNetUnfolder]: 206/1781 cut-off events. [2022-11-20 10:42:09,313 INFO L131 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2022-11-20 10:42:09,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 1781 events. 206/1781 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11028 event pairs, 61 based on Foata normal form. 4/1533 useless extension candidates. Maximal degree in co-relation 2904. Up to 226 conditions per place. [2022-11-20 10:42:09,383 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 65 selfloop transitions, 14 changer transitions 0/334 dead transitions. [2022-11-20 10:42:09,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 334 transitions, 1272 flow [2022-11-20 10:42:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:42:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:42:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1844 transitions. [2022-11-20 10:42:09,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836281179138322 [2022-11-20 10:42:09,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1844 transitions. [2022-11-20 10:42:09,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1844 transitions. [2022-11-20 10:42:09,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:09,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1844 transitions. [2022-11-20 10:42:09,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.42857142857144) internal successors, (1844), 7 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states 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 10:42:09,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 10:42:09,419 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 10:42:09,420 INFO L175 Difference]: Start difference. First operand has 349 places, 323 transitions, 1082 flow. Second operand 7 states and 1844 transitions. [2022-11-20 10:42:09,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 334 transitions, 1272 flow [2022-11-20 10:42:09,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 334 transitions, 1268 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:42:09,433 INFO L231 Difference]: Finished difference. Result has 359 places, 327 transitions, 1151 flow [2022-11-20 10:42:09,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1151, PETRI_PLACES=359, PETRI_TRANSITIONS=327} [2022-11-20 10:42:09,434 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 79 predicate places. [2022-11-20 10:42:09,434 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 327 transitions, 1151 flow [2022-11-20 10:42:09,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states 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 10:42:09,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:09,436 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, 1, 1, 1, 1, 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 10:42:09,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:42:09,436 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash -687745817, now seen corresponding path program 1 times [2022-11-20 10:42:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:09,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612916257] [2022-11-20 10:42:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:09,626 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 10:42:09,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:09,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612916257] [2022-11-20 10:42:09,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612916257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:09,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:09,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:42:09,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214521566] [2022-11-20 10:42:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:09,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:42:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:42:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:42:09,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-20 10:42:09,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 327 transitions, 1151 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states 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 10:42:09,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:09,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-20 10:42:09,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:10,639 INFO L130 PetriNetUnfolder]: 200/1771 cut-off events. [2022-11-20 10:42:10,639 INFO L131 PetriNetUnfolder]: For 797/797 co-relation queries the response was YES. [2022-11-20 10:42:10,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 1771 events. 200/1771 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10979 event pairs, 50 based on Foata normal form. 4/1543 useless extension candidates. Maximal degree in co-relation 2976. Up to 245 conditions per place. [2022-11-20 10:42:10,722 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 73 selfloop transitions, 16 changer transitions 0/347 dead transitions. [2022-11-20 10:42:10,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 347 transitions, 1413 flow [2022-11-20 10:42:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:42:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:42:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1852 transitions. [2022-11-20 10:42:10,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8399092970521542 [2022-11-20 10:42:10,728 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1852 transitions. [2022-11-20 10:42:10,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1852 transitions. [2022-11-20 10:42:10,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:10,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1852 transitions. [2022-11-20 10:42:10,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.57142857142856) internal successors, (1852), 7 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states 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 10:42:10,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 10:42:10,741 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 10:42:10,741 INFO L175 Difference]: Start difference. First operand has 359 places, 327 transitions, 1151 flow. Second operand 7 states and 1852 transitions. [2022-11-20 10:42:10,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 347 transitions, 1413 flow [2022-11-20 10:42:10,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 347 transitions, 1403 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:42:10,758 INFO L231 Difference]: Finished difference. Result has 369 places, 334 transitions, 1248 flow [2022-11-20 10:42:10,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1248, PETRI_PLACES=369, PETRI_TRANSITIONS=334} [2022-11-20 10:42:10,759 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 89 predicate places. [2022-11-20 10:42:10,760 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 334 transitions, 1248 flow [2022-11-20 10:42:10,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states 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 10:42:10,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:10,761 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, 1, 1, 1, 1, 1, 1, 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 10:42:10,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:42:10,761 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash -562743168, now seen corresponding path program 1 times [2022-11-20 10:42:10,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:10,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973641096] [2022-11-20 10:42:10,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:10,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:10,903 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 10:42:10,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973641096] [2022-11-20 10:42:10,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973641096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:10,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:10,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:42:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486363412] [2022-11-20 10:42:10,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:10,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:42:10,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:10,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:42:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:42:10,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-20 10:42:10,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 334 transitions, 1248 flow. Second operand has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 10:42:10,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:10,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-20 10:42:10,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:13,141 INFO L130 PetriNetUnfolder]: 734/5120 cut-off events. [2022-11-20 10:42:13,142 INFO L131 PetriNetUnfolder]: For 1980/1985 co-relation queries the response was YES. [2022-11-20 10:42:13,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 5120 events. 734/5120 cut-off events. For 1980/1985 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 56567 event pairs, 6 based on Foata normal form. 0/3903 useless extension candidates. Maximal degree in co-relation 7411. Up to 606 conditions per place. [2022-11-20 10:42:13,293 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 60 selfloop transitions, 20 changer transitions 0/368 dead transitions. [2022-11-20 10:42:13,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 368 transitions, 1497 flow [2022-11-20 10:42:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:42:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:42:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3245 transitions. [2022-11-20 10:42:13,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584656084656085 [2022-11-20 10:42:13,303 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3245 transitions. [2022-11-20 10:42:13,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3245 transitions. [2022-11-20 10:42:13,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:13,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3245 transitions. [2022-11-20 10:42:13,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.4166666666667) internal successors, (3245), 12 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states 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 10:42:13,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 10:42:13,324 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 10:42:13,324 INFO L175 Difference]: Start difference. First operand has 369 places, 334 transitions, 1248 flow. Second operand 12 states and 3245 transitions. [2022-11-20 10:42:13,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 368 transitions, 1497 flow [2022-11-20 10:42:13,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 368 transitions, 1488 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:42:13,345 INFO L231 Difference]: Finished difference. Result has 384 places, 342 transitions, 1339 flow [2022-11-20 10:42:13,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1339, PETRI_PLACES=384, PETRI_TRANSITIONS=342} [2022-11-20 10:42:13,347 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 104 predicate places. [2022-11-20 10:42:13,347 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 342 transitions, 1339 flow [2022-11-20 10:42:13,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 10:42:13,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:13,348 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, 1, 1, 1, 1, 1, 1, 1, 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 10:42:13,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:42:13,349 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:13,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:13,349 INFO L85 PathProgramCache]: Analyzing trace with hash -265168108, now seen corresponding path program 1 times [2022-11-20 10:42:13,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:13,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294332052] [2022-11-20 10:42:13,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:13,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:13,528 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 10:42:13,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:13,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294332052] [2022-11-20 10:42:13,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294332052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:13,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:13,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:42:13,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139038992] [2022-11-20 10:42:13,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:13,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:42:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:13,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:42:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:42:13,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-20 10:42:13,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 342 transitions, 1339 flow. Second operand has 8 states, 8 states have (on average 266.375) internal successors, (2131), 8 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states 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 10:42:13,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:13,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-20 10:42:13,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:15,923 INFO L130 PetriNetUnfolder]: 674/5046 cut-off events. [2022-11-20 10:42:15,923 INFO L131 PetriNetUnfolder]: For 2726/2731 co-relation queries the response was YES. [2022-11-20 10:42:16,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7739 conditions, 5046 events. 674/5046 cut-off events. For 2726/2731 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 54493 event pairs, 6 based on Foata normal form. 0/3921 useless extension candidates. Maximal degree in co-relation 7600. Up to 546 conditions per place. [2022-11-20 10:42:16,054 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 62 selfloop transitions, 21 changer transitions 0/374 dead transitions. [2022-11-20 10:42:16,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 374 transitions, 1600 flow [2022-11-20 10:42:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:42:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:42:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3247 transitions. [2022-11-20 10:42:16,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858994708994709 [2022-11-20 10:42:16,063 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3247 transitions. [2022-11-20 10:42:16,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3247 transitions. [2022-11-20 10:42:16,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:16,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3247 transitions. [2022-11-20 10:42:16,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states 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 10:42:16,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 10:42:16,085 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 10:42:16,085 INFO L175 Difference]: Start difference. First operand has 384 places, 342 transitions, 1339 flow. Second operand 12 states and 3247 transitions. [2022-11-20 10:42:16,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 374 transitions, 1600 flow [2022-11-20 10:42:16,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 374 transitions, 1582 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 10:42:16,112 INFO L231 Difference]: Finished difference. Result has 395 places, 349 transitions, 1422 flow [2022-11-20 10:42:16,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1422, PETRI_PLACES=395, PETRI_TRANSITIONS=349} [2022-11-20 10:42:16,113 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 115 predicate places. [2022-11-20 10:42:16,114 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 349 transitions, 1422 flow [2022-11-20 10:42:16,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.375) internal successors, (2131), 8 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states 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 10:42:16,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:16,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:16,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:42:16,116 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:16,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1650504552, now seen corresponding path program 1 times [2022-11-20 10:42:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:16,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097570178] [2022-11-20 10:42:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:16,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:16,268 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 10:42:16,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:16,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097570178] [2022-11-20 10:42:16,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097570178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:16,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:16,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:42:16,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254943286] [2022-11-20 10:42:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:16,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:42:16,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:42:16,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:42:16,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-20 10:42:16,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 349 transitions, 1422 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states 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 10:42:16,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:16,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-20 10:42:16,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:18,284 INFO L130 PetriNetUnfolder]: 1178/5508 cut-off events. [2022-11-20 10:42:18,285 INFO L131 PetriNetUnfolder]: For 3531/3536 co-relation queries the response was YES. [2022-11-20 10:42:18,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 5508 events. 1178/5508 cut-off events. For 3531/3536 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 65759 event pairs, 366 based on Foata normal form. 14/3994 useless extension candidates. Maximal degree in co-relation 9361. Up to 1118 conditions per place. [2022-11-20 10:42:18,400 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 58 selfloop transitions, 15 changer transitions 1/359 dead transitions. [2022-11-20 10:42:18,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 359 transitions, 1594 flow [2022-11-20 10:42:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:42:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:42:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1843 transitions. [2022-11-20 10:42:18,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835827664399093 [2022-11-20 10:42:18,404 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1843 transitions. [2022-11-20 10:42:18,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1843 transitions. [2022-11-20 10:42:18,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:18,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1843 transitions. [2022-11-20 10:42:18,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.2857142857143) internal successors, (1843), 7 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states 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 10:42:18,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 10:42:18,412 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 10:42:18,412 INFO L175 Difference]: Start difference. First operand has 395 places, 349 transitions, 1422 flow. Second operand 7 states and 1843 transitions. [2022-11-20 10:42:18,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 359 transitions, 1594 flow [2022-11-20 10:42:18,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 359 transitions, 1576 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 10:42:18,437 INFO L231 Difference]: Finished difference. Result has 401 places, 353 transitions, 1481 flow [2022-11-20 10:42:18,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1481, PETRI_PLACES=401, PETRI_TRANSITIONS=353} [2022-11-20 10:42:18,439 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 121 predicate places. [2022-11-20 10:42:18,439 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 353 transitions, 1481 flow [2022-11-20 10:42:18,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states 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 10:42:18,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:18,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:18,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:42:18,441 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1100997573, now seen corresponding path program 1 times [2022-11-20 10:42:18,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:18,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251980455] [2022-11-20 10:42:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:18,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:18,599 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 10:42:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:18,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251980455] [2022-11-20 10:42:18,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251980455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:18,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:18,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:42:18,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580201465] [2022-11-20 10:42:18,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:18,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:42:18,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:42:18,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:42:18,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-20 10:42:18,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 353 transitions, 1481 flow. Second operand has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states 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 10:42:18,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:18,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-20 10:42:18,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:20,764 INFO L130 PetriNetUnfolder]: 1130/5446 cut-off events. [2022-11-20 10:42:20,764 INFO L131 PetriNetUnfolder]: For 4324/4329 co-relation queries the response was YES. [2022-11-20 10:42:20,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 5446 events. 1130/5446 cut-off events. For 4324/4329 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 64188 event pairs, 306 based on Foata normal form. 14/4042 useless extension candidates. Maximal degree in co-relation 9628. Up to 1196 conditions per place. [2022-11-20 10:42:20,906 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 71 selfloop transitions, 17 changer transitions 1/374 dead transitions. [2022-11-20 10:42:20,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 374 transitions, 1749 flow [2022-11-20 10:42:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:42:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:42:20,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1851 transitions. [2022-11-20 10:42:20,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8394557823129252 [2022-11-20 10:42:20,909 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1851 transitions. [2022-11-20 10:42:20,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1851 transitions. [2022-11-20 10:42:20,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:20,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1851 transitions. [2022-11-20 10:42:20,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states 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 10:42:20,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 10:42:20,918 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 10:42:20,919 INFO L175 Difference]: Start difference. First operand has 401 places, 353 transitions, 1481 flow. Second operand 7 states and 1851 transitions. [2022-11-20 10:42:20,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 374 transitions, 1749 flow [2022-11-20 10:42:20,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 374 transitions, 1738 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:42:20,948 INFO L231 Difference]: Finished difference. Result has 411 places, 360 transitions, 1581 flow [2022-11-20 10:42:20,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1581, PETRI_PLACES=411, PETRI_TRANSITIONS=360} [2022-11-20 10:42:20,949 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 131 predicate places. [2022-11-20 10:42:20,949 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 360 transitions, 1581 flow [2022-11-20 10:42:20,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states 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 10:42:20,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:20,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:20,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:42:20,951 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:20,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:20,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1863572148, now seen corresponding path program 1 times [2022-11-20 10:42:20,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:20,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288600889] [2022-11-20 10:42:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:20,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:21,083 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 10:42:21,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:21,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288600889] [2022-11-20 10:42:21,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288600889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:21,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:21,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:42:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480343235] [2022-11-20 10:42:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:21,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:42:21,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:42:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:42:21,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 315 [2022-11-20 10:42:21,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 360 transitions, 1581 flow. Second operand has 8 states, 8 states have (on average 252.5) internal successors, (2020), 8 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states 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 10:42:21,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:21,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 315 [2022-11-20 10:42:21,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:23,421 INFO L130 PetriNetUnfolder]: 342/3093 cut-off events. [2022-11-20 10:42:23,422 INFO L131 PetriNetUnfolder]: For 2350/2350 co-relation queries the response was YES. [2022-11-20 10:42:23,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 3093 events. 342/3093 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 24020 event pairs, 4 based on Foata normal form. 0/2770 useless extension candidates. Maximal degree in co-relation 5142. Up to 267 conditions per place. [2022-11-20 10:42:23,578 INFO L137 encePairwiseOnDemand]: 299/315 looper letters, 152 selfloop transitions, 49 changer transitions 0/483 dead transitions. [2022-11-20 10:42:23,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 483 transitions, 2586 flow [2022-11-20 10:42:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:42:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:42:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4661 transitions. [2022-11-20 10:42:23,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8220458553791887 [2022-11-20 10:42:23,586 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4661 transitions. [2022-11-20 10:42:23,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4661 transitions. [2022-11-20 10:42:23,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:23,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4661 transitions. [2022-11-20 10:42:23,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.94444444444446) internal successors, (4661), 18 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states 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 10:42:23,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states 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 10:42:23,606 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states 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 10:42:23,606 INFO L175 Difference]: Start difference. First operand has 411 places, 360 transitions, 1581 flow. Second operand 18 states and 4661 transitions. [2022-11-20 10:42:23,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 483 transitions, 2586 flow [2022-11-20 10:42:23,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 483 transitions, 2576 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:42:23,635 INFO L231 Difference]: Finished difference. Result has 434 places, 390 transitions, 1880 flow [2022-11-20 10:42:23,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1880, PETRI_PLACES=434, PETRI_TRANSITIONS=390} [2022-11-20 10:42:23,637 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 154 predicate places. [2022-11-20 10:42:23,637 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 390 transitions, 1880 flow [2022-11-20 10:42:23,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 252.5) internal successors, (2020), 8 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states 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 10:42:23,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:23,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:23,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:42:23,638 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:23,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1936160917, now seen corresponding path program 1 times [2022-11-20 10:42:23,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:23,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929078641] [2022-11-20 10:42:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:23,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:23,726 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 10:42:23,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929078641] [2022-11-20 10:42:23,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929078641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:23,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:23,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:42:23,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411370504] [2022-11-20 10:42:23,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:23,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:42:23,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:42:23,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:42:23,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-20 10:42:23,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 390 transitions, 1880 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 10:42:23,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:23,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-20 10:42:23,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:27,103 INFO L130 PetriNetUnfolder]: 351/6678 cut-off events. [2022-11-20 10:42:27,104 INFO L131 PetriNetUnfolder]: For 4915/4915 co-relation queries the response was YES. [2022-11-20 10:42:27,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11815 conditions, 6678 events. 351/6678 cut-off events. For 4915/4915 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 63382 event pairs, 84 based on Foata normal form. 24/5905 useless extension candidates. Maximal degree in co-relation 11442. Up to 290 conditions per place. [2022-11-20 10:42:27,337 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 37 selfloop transitions, 7 changer transitions 0/403 dead transitions. [2022-11-20 10:42:27,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 403 transitions, 2007 flow [2022-11-20 10:42:27,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:42:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:42:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-20 10:42:27,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-20 10:42:27,339 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-20 10:42:27,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-20 10:42:27,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:27,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-20 10:42:27,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 10:42:27,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:42:27,344 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:42:27,344 INFO L175 Difference]: Start difference. First operand has 434 places, 390 transitions, 1880 flow. Second operand 4 states and 1140 transitions. [2022-11-20 10:42:27,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 403 transitions, 2007 flow [2022-11-20 10:42:27,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 403 transitions, 1979 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-11-20 10:42:27,387 INFO L231 Difference]: Finished difference. Result has 438 places, 393 transitions, 1908 flow [2022-11-20 10:42:27,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=438, PETRI_TRANSITIONS=393} [2022-11-20 10:42:27,388 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 158 predicate places. [2022-11-20 10:42:27,388 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 393 transitions, 1908 flow [2022-11-20 10:42:27,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 10:42:27,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:27,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:27,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:42:27,390 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1407132334, now seen corresponding path program 1 times [2022-11-20 10:42:27,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:27,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157591069] [2022-11-20 10:42:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:27,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:27,481 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 10:42:27,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:27,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157591069] [2022-11-20 10:42:27,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157591069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:27,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:27,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:42:27,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578583170] [2022-11-20 10:42:27,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:27,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:42:27,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:42:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:42:27,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-20 10:42:27,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 393 transitions, 1908 flow. Second operand has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 10:42:27,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:27,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-20 10:42:27,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:31,906 INFO L130 PetriNetUnfolder]: 308/4710 cut-off events. [2022-11-20 10:42:31,906 INFO L131 PetriNetUnfolder]: For 4491/4491 co-relation queries the response was YES. [2022-11-20 10:42:32,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10067 conditions, 4710 events. 308/4710 cut-off events. For 4491/4491 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 40211 event pairs, 1 based on Foata normal form. 2/4379 useless extension candidates. Maximal degree in co-relation 9458. Up to 291 conditions per place. [2022-11-20 10:42:32,196 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 79 selfloop transitions, 22 changer transitions 0/442 dead transitions. [2022-11-20 10:42:32,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 442 transitions, 2346 flow [2022-11-20 10:42:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:42:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:42:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2230 transitions. [2022-11-20 10:42:32,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8849206349206349 [2022-11-20 10:42:32,200 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2230 transitions. [2022-11-20 10:42:32,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2230 transitions. [2022-11-20 10:42:32,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:32,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2230 transitions. [2022-11-20 10:42:32,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 278.75) internal successors, (2230), 8 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states 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 10:42:32,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:42:32,210 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 10:42:32,210 INFO L175 Difference]: Start difference. First operand has 438 places, 393 transitions, 1908 flow. Second operand 8 states and 2230 transitions. [2022-11-20 10:42:32,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 442 transitions, 2346 flow [2022-11-20 10:42:32,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 442 transitions, 2346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:42:32,257 INFO L231 Difference]: Finished difference. Result has 451 places, 409 transitions, 2144 flow [2022-11-20 10:42:32,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2144, PETRI_PLACES=451, PETRI_TRANSITIONS=409} [2022-11-20 10:42:32,259 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 171 predicate places. [2022-11-20 10:42:32,259 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 409 transitions, 2144 flow [2022-11-20 10:42:32,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 10:42:32,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:32,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:32,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:42:32,260 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash 578206890, now seen corresponding path program 1 times [2022-11-20 10:42:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:32,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63669220] [2022-11-20 10:42:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:32,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:32,392 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 10:42:32,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:32,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63669220] [2022-11-20 10:42:32,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63669220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:32,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:32,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:42:32,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402055384] [2022-11-20 10:42:32,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:32,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:42:32,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:32,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:42:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:42:32,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 315 [2022-11-20 10:42:32,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 409 transitions, 2144 flow. Second operand has 8 states, 8 states have (on average 252.625) internal successors, (2021), 8 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states 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 10:42:32,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:32,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 315 [2022-11-20 10:42:32,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:42:45,536 INFO L130 PetriNetUnfolder]: 5007/21126 cut-off events. [2022-11-20 10:42:45,536 INFO L131 PetriNetUnfolder]: For 20871/20887 co-relation queries the response was YES. [2022-11-20 10:42:46,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43108 conditions, 21126 events. 5007/21126 cut-off events. For 20871/20887 co-relation queries the response was YES. Maximal size of possible extension queue 3788. Compared 333107 event pairs, 34 based on Foata normal form. 0/15408 useless extension candidates. Maximal degree in co-relation 42936. Up to 4607 conditions per place. [2022-11-20 10:42:46,349 INFO L137 encePairwiseOnDemand]: 299/315 looper letters, 147 selfloop transitions, 41 changer transitions 0/523 dead transitions. [2022-11-20 10:42:46,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 523 transitions, 3046 flow [2022-11-20 10:42:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:42:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:42:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4659 transitions. [2022-11-20 10:42:46,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216931216931217 [2022-11-20 10:42:46,354 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4659 transitions. [2022-11-20 10:42:46,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4659 transitions. [2022-11-20 10:42:46,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:46,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4659 transitions. [2022-11-20 10:42:46,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.8333333333333) internal successors, (4659), 18 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states 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 10:42:46,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states 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 10:42:46,365 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states 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 10:42:46,366 INFO L175 Difference]: Start difference. First operand has 451 places, 409 transitions, 2144 flow. Second operand 18 states and 4659 transitions. [2022-11-20 10:42:46,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 523 transitions, 3046 flow [2022-11-20 10:42:46,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 523 transitions, 3036 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 10:42:46,458 INFO L231 Difference]: Finished difference. Result has 473 places, 435 transitions, 2385 flow [2022-11-20 10:42:46,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2385, PETRI_PLACES=473, PETRI_TRANSITIONS=435} [2022-11-20 10:42:46,460 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 193 predicate places. [2022-11-20 10:42:46,460 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 435 transitions, 2385 flow [2022-11-20 10:42:46,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 252.625) internal successors, (2021), 8 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states 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 10:42:46,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:42:46,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:46,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:42:46,461 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:42:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 744545343, now seen corresponding path program 1 times [2022-11-20 10:42:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:46,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278181494] [2022-11-20 10:42:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:46,532 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 10:42:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:46,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278181494] [2022-11-20 10:42:46,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278181494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:46,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:46,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:42:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013556643] [2022-11-20 10:42:46,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:46,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:42:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:46,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:42:46,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:42:46,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-20 10:42:46,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 435 transitions, 2385 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 10:42:46,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:42:46,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-20 10:42:46,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:43:02,935 INFO L130 PetriNetUnfolder]: 3551/26366 cut-off events. [2022-11-20 10:43:02,935 INFO L131 PetriNetUnfolder]: For 25746/25762 co-relation queries the response was YES. [2022-11-20 10:43:03,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52040 conditions, 26366 events. 3551/26366 cut-off events. For 25746/25762 co-relation queries the response was YES. Maximal size of possible extension queue 2444. Compared 427500 event pairs, 1428 based on Foata normal form. 216/21443 useless extension candidates. Maximal degree in co-relation 51862. Up to 3194 conditions per place. [2022-11-20 10:43:04,380 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 36 selfloop transitions, 7 changer transitions 0/447 dead transitions. [2022-11-20 10:43:04,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 447 transitions, 2505 flow [2022-11-20 10:43:04,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:43:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:43:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2022-11-20 10:43:04,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.903968253968254 [2022-11-20 10:43:04,382 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2022-11-20 10:43:04,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2022-11-20 10:43:04,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:43:04,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2022-11-20 10:43:04,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 10:43:04,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:43:04,387 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 10:43:04,387 INFO L175 Difference]: Start difference. First operand has 473 places, 435 transitions, 2385 flow. Second operand 4 states and 1139 transitions. [2022-11-20 10:43:04,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 447 transitions, 2505 flow [2022-11-20 10:43:04,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 447 transitions, 2485 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-20 10:43:04,580 INFO L231 Difference]: Finished difference. Result has 477 places, 438 transitions, 2421 flow [2022-11-20 10:43:04,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2421, PETRI_PLACES=477, PETRI_TRANSITIONS=438} [2022-11-20 10:43:04,581 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 197 predicate places. [2022-11-20 10:43:04,582 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 438 transitions, 2421 flow [2022-11-20 10:43:04,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 10:43:04,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:43:04,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:04,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:43:04,583 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 10:43:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:04,584 INFO L85 PathProgramCache]: Analyzing trace with hash 585474242, now seen corresponding path program 1 times [2022-11-20 10:43:04,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:43:04,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457381102] [2022-11-20 10:43:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:43:04,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:43:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:43:04,676 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 10:43:04,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:43:04,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457381102] [2022-11-20 10:43:04,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457381102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:43:04,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:43:04,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:43:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319578557] [2022-11-20 10:43:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:43:04,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:43:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:43:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:43:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:43:04,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-20 10:43:04,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 438 transitions, 2421 flow. Second operand has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states 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 10:43:04,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:43:04,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-20 10:43:04,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand