./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:53:10,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:53:10,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:53:10,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:53:10,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:53:10,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:53:10,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:53:10,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:53:10,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:53:10,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:53:10,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:53:10,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:53:10,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:53:10,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:53:10,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:53:10,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:53:10,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:53:10,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:53:10,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:53:10,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:53:10,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:53:10,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:53:10,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:53:10,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:53:10,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:53:10,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:53:10,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:53:10,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:53:10,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:53:10,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:53:10,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:53:10,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:53:10,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:53:10,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:53:10,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:53:10,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:53:10,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:53:10,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:53:10,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:53:10,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:53:10,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:53:10,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:53:10,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:53:10,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:53:10,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:53:10,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:53:10,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:53:10,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:53:10,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:53:10,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:53:10,436 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:53:10,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:53:10,436 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:53:10,437 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:53:10,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:53:10,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:53:10,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:53:10,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:53:10,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:53:10,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:53:10,438 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:53:10,438 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:53:10,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:53:10,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:53:10,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:53:10,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:53:10,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:53:10,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:53:10,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:10,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:53:10,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:53:10,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:53:10,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:53:10,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:53:10,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:53:10,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:53:10,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:53:10,452 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_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2022-11-18 19:53:10,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:53:10,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:53:10,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:53:10,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:53:10,855 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:53:10,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/stack_longest-2.i [2022-11-18 19:53:10,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/data/2c86698be/f6c47e30565149fabfa1dca10f39ce0b/FLAG85b5a4dfb [2022-11-18 19:53:11,626 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:53:11,627 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/sv-benchmarks/c/pthread/stack_longest-2.i [2022-11-18 19:53:11,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/data/2c86698be/f6c47e30565149fabfa1dca10f39ce0b/FLAG85b5a4dfb [2022-11-18 19:53:11,851 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/data/2c86698be/f6c47e30565149fabfa1dca10f39ce0b [2022-11-18 19:53:11,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:53:11,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:53:11,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:11,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:53:11,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:53:11,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:11" (1/1) ... [2022-11-18 19:53:11,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c551b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:11, skipping insertion in model container [2022-11-18 19:53:11,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:11" (1/1) ... [2022-11-18 19:53:11,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:53:11,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:53:12,741 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2022-11-18 19:53:12,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:12,808 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:53:12,877 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2022-11-18 19:53:12,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:13,001 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:53:13,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13 WrapperNode [2022-11-18 19:53:13,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:13,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:13,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:53:13,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:53:13,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,112 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 156 [2022-11-18 19:53:13,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:13,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:53:13,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:53:13,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:53:13,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,177 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:53:13,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:53:13,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:53:13,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:53:13,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (1/1) ... [2022-11-18 19:53:13,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:13,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:53:13,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:53:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 19:53:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 19:53:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 19:53:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 19:53:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:53:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:53:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:53:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:53:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:53:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:53:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:53:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:53:13,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:53:13,302 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:53:13,497 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:53:13,509 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:53:13,958 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:53:13,979 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:53:13,979 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:53:13,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:13 BoogieIcfgContainer [2022-11-18 19:53:13,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:53:13,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:53:13,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:53:14,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:53:14,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:53:11" (1/3) ... [2022-11-18 19:53:14,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8fce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:14, skipping insertion in model container [2022-11-18 19:53:14,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:13" (2/3) ... [2022-11-18 19:53:14,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8fce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:14, skipping insertion in model container [2022-11-18 19:53:14,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:13" (3/3) ... [2022-11-18 19:53:14,007 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2022-11-18 19:53:14,027 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:53:14,040 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:53:14,041 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:53:14,041 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:53:14,181 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:53:14,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 184 transitions, 384 flow [2022-11-18 19:53:14,334 INFO L130 PetriNetUnfolder]: 10/182 cut-off events. [2022-11-18 19:53:14,334 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:53:14,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 182 events. 10/182 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 467 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-11-18 19:53:14,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 184 transitions, 384 flow [2022-11-18 19:53:14,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 172 transitions, 353 flow [2022-11-18 19:53:14,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:53:14,447 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;@75886356, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:53:14,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 19:53:14,494 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-11-18 19:53:14,494 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:53:14,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:14,496 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] [2022-11-18 19:53:14,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:14,514 INFO L85 PathProgramCache]: Analyzing trace with hash 260137772, now seen corresponding path program 1 times [2022-11-18 19:53:14,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:14,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058503227] [2022-11-18 19:53:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:14,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:15,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:15,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058503227] [2022-11-18 19:53:15,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058503227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:15,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:15,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:15,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885033481] [2022-11-18 19:53:15,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:15,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:15,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:15,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:15,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:53:15,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 172 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:15,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:53:15,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:15,493 INFO L130 PetriNetUnfolder]: 26/292 cut-off events. [2022-11-18 19:53:15,494 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 19:53:15,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 292 events. 26/292 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1227 event pairs, 2 based on Foata normal form. 40/302 useless extension candidates. Maximal degree in co-relation 323. Up to 36 conditions per place. [2022-11-18 19:53:15,507 INFO L137 encePairwiseOnDemand]: 172/184 looper letters, 19 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2022-11-18 19:53:15,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 172 transitions, 408 flow [2022-11-18 19:53:15,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2022-11-18 19:53:15,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9260869565217391 [2022-11-18 19:53:15,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2022-11-18 19:53:15,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2022-11-18 19:53:15,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:15,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2022-11-18 19:53:15,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,575 INFO L175 Difference]: Start difference. First operand has 169 places, 172 transitions, 353 flow. Second operand 5 states and 852 transitions. [2022-11-18 19:53:15,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 172 transitions, 408 flow [2022-11-18 19:53:15,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 172 transitions, 397 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:15,588 INFO L231 Difference]: Finished difference. Result has 169 places, 166 transitions, 362 flow [2022-11-18 19:53:15,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=169, PETRI_TRANSITIONS=166} [2022-11-18 19:53:15,599 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 0 predicate places. [2022-11-18 19:53:15,600 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 166 transitions, 362 flow [2022-11-18 19:53:15,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:15,602 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] [2022-11-18 19:53:15,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:53:15,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:15,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:15,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1165315661, now seen corresponding path program 1 times [2022-11-18 19:53:15,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:15,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123499976] [2022-11-18 19:53:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:15,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:15,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:15,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123499976] [2022-11-18 19:53:15,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123499976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:15,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:15,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745206347] [2022-11-18 19:53:15,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:15,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:15,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:15,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 184 [2022-11-18 19:53:15,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 166 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:15,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 184 [2022-11-18 19:53:15,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:16,334 INFO L130 PetriNetUnfolder]: 144/1251 cut-off events. [2022-11-18 19:53:16,335 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-18 19:53:16,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 1251 events. 144/1251 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7565 event pairs, 63 based on Foata normal form. 0/1096 useless extension candidates. Maximal degree in co-relation 1239. Up to 191 conditions per place. [2022-11-18 19:53:16,350 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 20 selfloop transitions, 3 changer transitions 0/173 dead transitions. [2022-11-18 19:53:16,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 173 transitions, 425 flow [2022-11-18 19:53:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:53:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2022-11-18 19:53:16,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9148550724637681 [2022-11-18 19:53:16,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2022-11-18 19:53:16,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2022-11-18 19:53:16,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:16,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2022-11-18 19:53:16,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:16,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:16,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:16,359 INFO L175 Difference]: Start difference. First operand has 169 places, 166 transitions, 362 flow. Second operand 3 states and 505 transitions. [2022-11-18 19:53:16,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 173 transitions, 425 flow [2022-11-18 19:53:16,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 173 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:16,398 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 377 flow [2022-11-18 19:53:16,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2022-11-18 19:53:16,400 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 2 predicate places. [2022-11-18 19:53:16,400 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 377 flow [2022-11-18 19:53:16,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:16,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:16,402 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:16,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:53:16,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:16,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:16,404 INFO L85 PathProgramCache]: Analyzing trace with hash 257660992, now seen corresponding path program 1 times [2022-11-18 19:53:16,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:16,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997401192] [2022-11-18 19:53:16,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:16,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:53:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997401192] [2022-11-18 19:53:16,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997401192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:16,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:16,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626665466] [2022-11-18 19:53:16,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:16,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:16,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:16,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:53:16,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:16,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:16,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:53:16,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:16,927 INFO L130 PetriNetUnfolder]: 96/790 cut-off events. [2022-11-18 19:53:16,927 INFO L131 PetriNetUnfolder]: For 119/120 co-relation queries the response was YES. [2022-11-18 19:53:16,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 790 events. 96/790 cut-off events. For 119/120 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3674 event pairs, 12 based on Foata normal form. 7/719 useless extension candidates. Maximal degree in co-relation 1036. Up to 87 conditions per place. [2022-11-18 19:53:16,941 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 12 selfloop transitions, 8 changer transitions 0/170 dead transitions. [2022-11-18 19:53:16,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 424 flow [2022-11-18 19:53:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-11-18 19:53:16,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-18 19:53:16,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-11-18 19:53:16,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-11-18 19:53:16,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:16,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-11-18 19:53:16,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:16,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:16,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:16,956 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 377 flow. Second operand 5 states and 828 transitions. [2022-11-18 19:53:16,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 424 flow [2022-11-18 19:53:16,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:16,968 INFO L231 Difference]: Finished difference. Result has 174 places, 167 transitions, 394 flow [2022-11-18 19:53:16,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=174, PETRI_TRANSITIONS=167} [2022-11-18 19:53:16,971 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 5 predicate places. [2022-11-18 19:53:16,972 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 167 transitions, 394 flow [2022-11-18 19:53:16,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:16,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:16,974 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:16,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:53:16,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:16,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash -602443304, now seen corresponding path program 1 times [2022-11-18 19:53:16,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:16,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595423304] [2022-11-18 19:53:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:16,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:17,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:17,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595423304] [2022-11-18 19:53:17,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595423304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:17,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545979110] [2022-11-18 19:53:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:17,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:17,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:17,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:17,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:53:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:17,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:17,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:17,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:17,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545979110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:17,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:17,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:53:17,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623146226] [2022-11-18 19:53:17,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:17,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:17,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:17,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:17,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:53:17,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 167 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:17,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:53:17,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:17,912 INFO L130 PetriNetUnfolder]: 91/774 cut-off events. [2022-11-18 19:53:17,916 INFO L131 PetriNetUnfolder]: For 172/173 co-relation queries the response was YES. [2022-11-18 19:53:17,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 774 events. 91/774 cut-off events. For 172/173 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3576 event pairs, 8 based on Foata normal form. 7/708 useless extension candidates. Maximal degree in co-relation 1059. Up to 65 conditions per place. [2022-11-18 19:53:17,932 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 17 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2022-11-18 19:53:17,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 455 flow [2022-11-18 19:53:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:53:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1158 transitions. [2022-11-18 19:53:17,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8990683229813664 [2022-11-18 19:53:17,939 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1158 transitions. [2022-11-18 19:53:17,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1158 transitions. [2022-11-18 19:53:17,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:17,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1158 transitions. [2022-11-18 19:53:17,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,952 INFO L175 Difference]: Start difference. First operand has 174 places, 167 transitions, 394 flow. Second operand 7 states and 1158 transitions. [2022-11-18 19:53:17,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 455 flow [2022-11-18 19:53:17,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 173 transitions, 443 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:17,963 INFO L231 Difference]: Finished difference. Result has 176 places, 166 transitions, 390 flow [2022-11-18 19:53:17,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=176, PETRI_TRANSITIONS=166} [2022-11-18 19:53:17,966 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 7 predicate places. [2022-11-18 19:53:17,966 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 166 transitions, 390 flow [2022-11-18 19:53:17,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:17,968 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] [2022-11-18 19:53:17,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:18,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:18,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:18,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:18,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1362637581, now seen corresponding path program 1 times [2022-11-18 19:53:18,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:18,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410046038] [2022-11-18 19:53:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:18,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:18,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410046038] [2022-11-18 19:53:18,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410046038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:18,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:18,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867342256] [2022-11-18 19:53:18,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:18,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:18,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:18,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:18,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:18,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:53:18,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 166 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:18,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:18,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:53:18,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:18,881 INFO L130 PetriNetUnfolder]: 289/1946 cut-off events. [2022-11-18 19:53:18,882 INFO L131 PetriNetUnfolder]: For 234/245 co-relation queries the response was YES. [2022-11-18 19:53:18,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2865 conditions, 1946 events. 289/1946 cut-off events. For 234/245 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13859 event pairs, 19 based on Foata normal form. 7/1804 useless extension candidates. Maximal degree in co-relation 2428. Up to 389 conditions per place. [2022-11-18 19:53:18,903 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 42 selfloop transitions, 8 changer transitions 0/193 dead transitions. [2022-11-18 19:53:18,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 193 transitions, 557 flow [2022-11-18 19:53:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-18 19:53:18,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8934782608695652 [2022-11-18 19:53:18,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-18 19:53:18,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-18 19:53:18,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:18,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-18 19:53:18,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:18,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:18,913 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:18,913 INFO L175 Difference]: Start difference. First operand has 176 places, 166 transitions, 390 flow. Second operand 5 states and 822 transitions. [2022-11-18 19:53:18,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 193 transitions, 557 flow [2022-11-18 19:53:18,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 193 transitions, 546 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:18,921 INFO L231 Difference]: Finished difference. Result has 178 places, 171 transitions, 431 flow [2022-11-18 19:53:18,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=178, PETRI_TRANSITIONS=171} [2022-11-18 19:53:18,926 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 9 predicate places. [2022-11-18 19:53:18,926 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 171 transitions, 431 flow [2022-11-18 19:53:18,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:18,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:18,927 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] [2022-11-18 19:53:18,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:53:18,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1943695303, now seen corresponding path program 1 times [2022-11-18 19:53:18,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:18,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851355141] [2022-11-18 19:53:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:18,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:19,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:19,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851355141] [2022-11-18 19:53:19,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851355141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:19,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:19,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594292418] [2022-11-18 19:53:19,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:19,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:19,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:53:19,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 171 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:19,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:53:19,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:19,467 INFO L130 PetriNetUnfolder]: 64/1064 cut-off events. [2022-11-18 19:53:19,468 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-11-18 19:53:19,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 1064 events. 64/1064 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5256 event pairs, 14 based on Foata normal form. 0/994 useless extension candidates. Maximal degree in co-relation 1146. Up to 56 conditions per place. [2022-11-18 19:53:19,484 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 19 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2022-11-18 19:53:19,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 180 transitions, 501 flow [2022-11-18 19:53:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 836 transitions. [2022-11-18 19:53:19,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.908695652173913 [2022-11-18 19:53:19,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 836 transitions. [2022-11-18 19:53:19,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 836 transitions. [2022-11-18 19:53:19,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:19,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 836 transitions. [2022-11-18 19:53:19,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,494 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,495 INFO L175 Difference]: Start difference. First operand has 178 places, 171 transitions, 431 flow. Second operand 5 states and 836 transitions. [2022-11-18 19:53:19,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 180 transitions, 501 flow [2022-11-18 19:53:19,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 180 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:19,502 INFO L231 Difference]: Finished difference. Result has 184 places, 174 transitions, 458 flow [2022-11-18 19:53:19,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=184, PETRI_TRANSITIONS=174} [2022-11-18 19:53:19,506 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 15 predicate places. [2022-11-18 19:53:19,507 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 174 transitions, 458 flow [2022-11-18 19:53:19,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:19,516 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] [2022-11-18 19:53:19,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:53:19,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -845823597, now seen corresponding path program 1 times [2022-11-18 19:53:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:19,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792248940] [2022-11-18 19:53:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:19,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:19,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:19,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792248940] [2022-11-18 19:53:19,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792248940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:19,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:19,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:19,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634348239] [2022-11-18 19:53:19,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:19,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:19,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:19,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:19,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:19,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:53:19,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 174 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:19,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:53:19,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:19,926 INFO L130 PetriNetUnfolder]: 38/952 cut-off events. [2022-11-18 19:53:19,927 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 19:53:19,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 952 events. 38/952 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5102 event pairs, 13 based on Foata normal form. 10/919 useless extension candidates. Maximal degree in co-relation 896. Up to 39 conditions per place. [2022-11-18 19:53:19,937 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 12 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2022-11-18 19:53:19,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 173 transitions, 478 flow [2022-11-18 19:53:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:53:19,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-11-18 19:53:19,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130434782608695 [2022-11-18 19:53:19,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-11-18 19:53:19,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-11-18 19:53:19,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:19,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-11-18 19:53:19,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,946 INFO L175 Difference]: Start difference. First operand has 184 places, 174 transitions, 458 flow. Second operand 3 states and 504 transitions. [2022-11-18 19:53:19,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 173 transitions, 478 flow [2022-11-18 19:53:19,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 173 transitions, 471 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-18 19:53:19,952 INFO L231 Difference]: Finished difference. Result has 184 places, 171 transitions, 440 flow [2022-11-18 19:53:19,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=184, PETRI_TRANSITIONS=171} [2022-11-18 19:53:19,954 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 15 predicate places. [2022-11-18 19:53:19,954 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 171 transitions, 440 flow [2022-11-18 19:53:19,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:19,960 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] [2022-11-18 19:53:19,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:53:19,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:19,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1971349954, now seen corresponding path program 1 times [2022-11-18 19:53:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:19,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90716473] [2022-11-18 19:53:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:19,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:20,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:20,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90716473] [2022-11-18 19:53:20,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90716473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:20,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:20,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:53:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949104267] [2022-11-18 19:53:20,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:20,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:20,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:53:20,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 171 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:20,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:20,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:53:20,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:20,636 INFO L130 PetriNetUnfolder]: 130/1333 cut-off events. [2022-11-18 19:53:20,636 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-11-18 19:53:20,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 1333 events. 130/1333 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8107 event pairs, 38 based on Foata normal form. 4/1281 useless extension candidates. Maximal degree in co-relation 1189. Up to 123 conditions per place. [2022-11-18 19:53:20,649 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 55 selfloop transitions, 11 changer transitions 0/206 dead transitions. [2022-11-18 19:53:20,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 206 transitions, 667 flow [2022-11-18 19:53:20,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:53:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:53:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1252 transitions. [2022-11-18 19:53:20,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8505434782608695 [2022-11-18 19:53:20,653 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1252 transitions. [2022-11-18 19:53:20,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1252 transitions. [2022-11-18 19:53:20,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:20,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1252 transitions. [2022-11-18 19:53:20,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.5) internal successors, (1252), 8 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:20,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:20,662 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:20,662 INFO L175 Difference]: Start difference. First operand has 184 places, 171 transitions, 440 flow. Second operand 8 states and 1252 transitions. [2022-11-18 19:53:20,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 206 transitions, 667 flow [2022-11-18 19:53:20,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 206 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:20,669 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 502 flow [2022-11-18 19:53:20,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2022-11-18 19:53:20,670 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 24 predicate places. [2022-11-18 19:53:20,670 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 502 flow [2022-11-18 19:53:20,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:20,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:20,671 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] [2022-11-18 19:53:20,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:53:20,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:20,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:20,672 INFO L85 PathProgramCache]: Analyzing trace with hash 386141973, now seen corresponding path program 1 times [2022-11-18 19:53:20,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:20,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923280503] [2022-11-18 19:53:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:20,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:20,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923280503] [2022-11-18 19:53:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923280503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:20,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:20,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:20,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632491101] [2022-11-18 19:53:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:20,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:20,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:20,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:53:20,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 177 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:20,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:20,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:53:20,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:21,170 INFO L130 PetriNetUnfolder]: 102/1277 cut-off events. [2022-11-18 19:53:21,170 INFO L131 PetriNetUnfolder]: For 330/332 co-relation queries the response was YES. [2022-11-18 19:53:21,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 1277 events. 102/1277 cut-off events. For 330/332 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7185 event pairs, 24 based on Foata normal form. 22/1260 useless extension candidates. Maximal degree in co-relation 1563. Up to 114 conditions per place. [2022-11-18 19:53:21,182 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 28 selfloop transitions, 8 changer transitions 0/181 dead transitions. [2022-11-18 19:53:21,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 181 transitions, 582 flow [2022-11-18 19:53:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 803 transitions. [2022-11-18 19:53:21,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8728260869565218 [2022-11-18 19:53:21,185 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 803 transitions. [2022-11-18 19:53:21,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 803 transitions. [2022-11-18 19:53:21,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:21,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 803 transitions. [2022-11-18 19:53:21,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:21,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:21,193 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:21,194 INFO L175 Difference]: Start difference. First operand has 193 places, 177 transitions, 502 flow. Second operand 5 states and 803 transitions. [2022-11-18 19:53:21,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 181 transitions, 582 flow [2022-11-18 19:53:21,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 181 transitions, 576 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:21,206 INFO L231 Difference]: Finished difference. Result has 192 places, 174 transitions, 517 flow [2022-11-18 19:53:21,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=517, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2022-11-18 19:53:21,208 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 23 predicate places. [2022-11-18 19:53:21,209 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 517 flow [2022-11-18 19:53:21,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:21,210 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:21,210 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:21,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:53:21,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:21,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1481931682, now seen corresponding path program 1 times [2022-11-18 19:53:21,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:21,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064428328] [2022-11-18 19:53:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:21,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:21,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:21,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064428328] [2022-11-18 19:53:21,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064428328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:21,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162600418] [2022-11-18 19:53:21,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:21,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:21,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:21,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:21,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:53:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:21,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:21,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:21,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:22,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162600418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:22,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:22,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:53:22,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35148935] [2022-11-18 19:53:22,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:22,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:53:22,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:53:22,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:53:22,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:53:22,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 517 flow. Second operand has 12 states, 12 states have (on average 157.25) internal successors, (1887), 12 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:22,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:22,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:53:22,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:23,014 INFO L130 PetriNetUnfolder]: 160/2260 cut-off events. [2022-11-18 19:53:23,014 INFO L131 PetriNetUnfolder]: For 716/716 co-relation queries the response was YES. [2022-11-18 19:53:23,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 2260 events. 160/2260 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 14808 event pairs, 32 based on Foata normal form. 25/2222 useless extension candidates. Maximal degree in co-relation 2895. Up to 107 conditions per place. [2022-11-18 19:53:23,036 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 78 selfloop transitions, 34 changer transitions 0/256 dead transitions. [2022-11-18 19:53:23,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 256 transitions, 1079 flow [2022-11-18 19:53:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:53:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 19:53:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3189 transitions. [2022-11-18 19:53:23,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665760869565218 [2022-11-18 19:53:23,045 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3189 transitions. [2022-11-18 19:53:23,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3189 transitions. [2022-11-18 19:53:23,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:23,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3189 transitions. [2022-11-18 19:53:23,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 159.45) internal successors, (3189), 20 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:23,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 184.0) internal successors, (3864), 21 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:23,067 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 184.0) internal successors, (3864), 21 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:23,068 INFO L175 Difference]: Start difference. First operand has 192 places, 174 transitions, 517 flow. Second operand 20 states and 3189 transitions. [2022-11-18 19:53:23,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 256 transitions, 1079 flow [2022-11-18 19:53:23,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 256 transitions, 1057 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 19:53:23,078 INFO L231 Difference]: Finished difference. Result has 216 places, 201 transitions, 780 flow [2022-11-18 19:53:23,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=780, PETRI_PLACES=216, PETRI_TRANSITIONS=201} [2022-11-18 19:53:23,079 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 47 predicate places. [2022-11-18 19:53:23,079 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 201 transitions, 780 flow [2022-11-18 19:53:23,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.25) internal successors, (1887), 12 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:23,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:23,081 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:23,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:23,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:23,288 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:23,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1304758624, now seen corresponding path program 1 times [2022-11-18 19:53:23,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:23,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711479656] [2022-11-18 19:53:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:23,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:23,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711479656] [2022-11-18 19:53:23,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711479656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:23,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203557043] [2022-11-18 19:53:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:23,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:23,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:23,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:23,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:53:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:23,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:23,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:23,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:23,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203557043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:23,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:23,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:53:23,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934374683] [2022-11-18 19:53:23,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:23,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:23,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:23,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:53:23,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 201 transitions, 780 flow. Second operand has 6 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:23,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:23,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:53:23,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:24,768 INFO L130 PetriNetUnfolder]: 154/2404 cut-off events. [2022-11-18 19:53:24,769 INFO L131 PetriNetUnfolder]: For 1498/1498 co-relation queries the response was YES. [2022-11-18 19:53:24,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 2404 events. 154/2404 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 15209 event pairs, 31 based on Foata normal form. 36/2370 useless extension candidates. Maximal degree in co-relation 3524. Up to 231 conditions per place. [2022-11-18 19:53:24,791 INFO L137 encePairwiseOnDemand]: 174/184 looper letters, 68 selfloop transitions, 20 changer transitions 0/232 dead transitions. [2022-11-18 19:53:24,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 232 transitions, 1142 flow [2022-11-18 19:53:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:53:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:53:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1280 transitions. [2022-11-18 19:53:24,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2022-11-18 19:53:24,796 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1280 transitions. [2022-11-18 19:53:24,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1280 transitions. [2022-11-18 19:53:24,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:24,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1280 transitions. [2022-11-18 19:53:24,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:24,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:24,805 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:24,805 INFO L175 Difference]: Start difference. First operand has 216 places, 201 transitions, 780 flow. Second operand 8 states and 1280 transitions. [2022-11-18 19:53:24,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 232 transitions, 1142 flow [2022-11-18 19:53:24,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 232 transitions, 1050 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:24,818 INFO L231 Difference]: Finished difference. Result has 221 places, 212 transitions, 911 flow [2022-11-18 19:53:24,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=221, PETRI_TRANSITIONS=212} [2022-11-18 19:53:24,820 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 52 predicate places. [2022-11-18 19:53:24,820 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 212 transitions, 911 flow [2022-11-18 19:53:24,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:24,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:24,821 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:24,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:25,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:53:25,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1324777134, now seen corresponding path program 1 times [2022-11-18 19:53:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:25,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388763387] [2022-11-18 19:53:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:25,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:53:25,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:25,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388763387] [2022-11-18 19:53:25,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388763387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:25,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:25,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:25,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518619616] [2022-11-18 19:53:25,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:25,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:25,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:25,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:25,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:53:25,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 212 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:25,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:53:25,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:25,722 INFO L130 PetriNetUnfolder]: 91/2069 cut-off events. [2022-11-18 19:53:25,723 INFO L131 PetriNetUnfolder]: For 983/983 co-relation queries the response was YES. [2022-11-18 19:53:25,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 2069 events. 91/2069 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11459 event pairs, 11 based on Foata normal form. 19/2025 useless extension candidates. Maximal degree in co-relation 2863. Up to 107 conditions per place. [2022-11-18 19:53:25,742 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 12 selfloop transitions, 8 changer transitions 0/215 dead transitions. [2022-11-18 19:53:25,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 215 transitions, 961 flow [2022-11-18 19:53:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:25,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-11-18 19:53:25,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-18 19:53:25,745 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-11-18 19:53:25,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-11-18 19:53:25,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:25,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-11-18 19:53:25,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,750 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,750 INFO L175 Difference]: Start difference. First operand has 221 places, 212 transitions, 911 flow. Second operand 5 states and 828 transitions. [2022-11-18 19:53:25,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 215 transitions, 961 flow [2022-11-18 19:53:25,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 215 transitions, 941 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:25,762 INFO L231 Difference]: Finished difference. Result has 222 places, 212 transitions, 911 flow [2022-11-18 19:53:25,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=222, PETRI_TRANSITIONS=212} [2022-11-18 19:53:25,763 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 53 predicate places. [2022-11-18 19:53:25,763 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 212 transitions, 911 flow [2022-11-18 19:53:25,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:25,765 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:25,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:53:25,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:25,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:25,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1881581303, now seen corresponding path program 1 times [2022-11-18 19:53:25,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:25,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867670662] [2022-11-18 19:53:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:25,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:25,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:25,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867670662] [2022-11-18 19:53:25,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867670662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:25,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281209452] [2022-11-18 19:53:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:25,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:25,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:25,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:26,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:53:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:26,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:53:26,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:26,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:26,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281209452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:26,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:26,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 19:53:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562734536] [2022-11-18 19:53:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:26,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:53:26,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:53:26,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:53:26,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:53:26,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 212 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:26,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:53:26,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:26,942 INFO L130 PetriNetUnfolder]: 88/2075 cut-off events. [2022-11-18 19:53:26,942 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2022-11-18 19:53:26,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 2075 events. 88/2075 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11413 event pairs, 17 based on Foata normal form. 19/2031 useless extension candidates. Maximal degree in co-relation 2961. Up to 112 conditions per place. [2022-11-18 19:53:26,967 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 13 selfloop transitions, 5 changer transitions 3/213 dead transitions. [2022-11-18 19:53:26,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 213 transitions, 951 flow [2022-11-18 19:53:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:53:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:53:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 663 transitions. [2022-11-18 19:53:26,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9008152173913043 [2022-11-18 19:53:26,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 663 transitions. [2022-11-18 19:53:26,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 663 transitions. [2022-11-18 19:53:26,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:26,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 663 transitions. [2022-11-18 19:53:26,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,975 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,975 INFO L175 Difference]: Start difference. First operand has 222 places, 212 transitions, 911 flow. Second operand 4 states and 663 transitions. [2022-11-18 19:53:26,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 213 transitions, 951 flow [2022-11-18 19:53:26,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 213 transitions, 939 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:26,988 INFO L231 Difference]: Finished difference. Result has 221 places, 208 transitions, 899 flow [2022-11-18 19:53:26,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=899, PETRI_PLACES=221, PETRI_TRANSITIONS=208} [2022-11-18 19:53:26,990 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 52 predicate places. [2022-11-18 19:53:26,990 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 208 transitions, 899 flow [2022-11-18 19:53:26,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:26,991 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:26,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:27,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:53:27,198 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:27,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:27,198 INFO L85 PathProgramCache]: Analyzing trace with hash 589813427, now seen corresponding path program 1 times [2022-11-18 19:53:27,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:27,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522685114] [2022-11-18 19:53:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:27,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:27,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:27,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522685114] [2022-11-18 19:53:27,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522685114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:27,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549643654] [2022-11-18 19:53:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:27,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:27,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:27,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:27,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:53:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:27,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:53:27,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:27,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:28,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549643654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:28,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:28,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 19:53:28,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766891233] [2022-11-18 19:53:28,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:28,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:53:28,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:53:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:53:28,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:53:28,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 208 transitions, 899 flow. Second operand has 16 states, 16 states have (on average 151.625) internal successors, (2426), 16 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:28,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:28,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:53:28,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:29,623 INFO L130 PetriNetUnfolder]: 219/2729 cut-off events. [2022-11-18 19:53:29,624 INFO L131 PetriNetUnfolder]: For 1905/1905 co-relation queries the response was YES. [2022-11-18 19:53:29,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4786 conditions, 2729 events. 219/2729 cut-off events. For 1905/1905 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 19002 event pairs, 55 based on Foata normal form. 37/2695 useless extension candidates. Maximal degree in co-relation 4306. Up to 126 conditions per place. [2022-11-18 19:53:29,651 INFO L137 encePairwiseOnDemand]: 171/184 looper letters, 90 selfloop transitions, 62 changer transitions 1/287 dead transitions. [2022-11-18 19:53:29,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 287 transitions, 1522 flow [2022-11-18 19:53:29,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:53:29,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 19:53:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3674 transitions. [2022-11-18 19:53:29,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8319746376811594 [2022-11-18 19:53:29,664 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3674 transitions. [2022-11-18 19:53:29,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3674 transitions. [2022-11-18 19:53:29,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:29,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3674 transitions. [2022-11-18 19:53:29,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 153.08333333333334) internal successors, (3674), 24 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:29,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 184.0) internal successors, (4600), 25 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:29,689 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 184.0) internal successors, (4600), 25 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:29,690 INFO L175 Difference]: Start difference. First operand has 221 places, 208 transitions, 899 flow. Second operand 24 states and 3674 transitions. [2022-11-18 19:53:29,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 287 transitions, 1522 flow [2022-11-18 19:53:29,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 287 transitions, 1512 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:29,707 INFO L231 Difference]: Finished difference. Result has 241 places, 223 transitions, 1148 flow [2022-11-18 19:53:29,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1148, PETRI_PLACES=241, PETRI_TRANSITIONS=223} [2022-11-18 19:53:29,708 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 72 predicate places. [2022-11-18 19:53:29,709 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 223 transitions, 1148 flow [2022-11-18 19:53:29,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 151.625) internal successors, (2426), 16 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:29,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:29,710 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:29,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 19:53:29,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:29,918 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 114781450, now seen corresponding path program 1 times [2022-11-18 19:53:29,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:29,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579731908] [2022-11-18 19:53:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:29,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:30,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:30,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579731908] [2022-11-18 19:53:30,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579731908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:30,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:30,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:53:30,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918945178] [2022-11-18 19:53:30,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:30,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:30,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:30,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:53:30,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 223 transitions, 1148 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:30,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:30,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:53:30,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:31,238 INFO L130 PetriNetUnfolder]: 216/2847 cut-off events. [2022-11-18 19:53:31,239 INFO L131 PetriNetUnfolder]: For 2468/2468 co-relation queries the response was YES. [2022-11-18 19:53:31,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5127 conditions, 2847 events. 216/2847 cut-off events. For 2468/2468 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 20310 event pairs, 45 based on Foata normal form. 24/2800 useless extension candidates. Maximal degree in co-relation 4665. Up to 297 conditions per place. [2022-11-18 19:53:31,274 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 49 selfloop transitions, 45 changer transitions 2/230 dead transitions. [2022-11-18 19:53:31,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 230 transitions, 1334 flow [2022-11-18 19:53:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:53:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:53:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1227 transitions. [2022-11-18 19:53:31,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335597826086957 [2022-11-18 19:53:31,278 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1227 transitions. [2022-11-18 19:53:31,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1227 transitions. [2022-11-18 19:53:31,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:31,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1227 transitions. [2022-11-18 19:53:31,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.375) internal successors, (1227), 8 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:31,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:31,287 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:31,287 INFO L175 Difference]: Start difference. First operand has 241 places, 223 transitions, 1148 flow. Second operand 8 states and 1227 transitions. [2022-11-18 19:53:31,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 230 transitions, 1334 flow [2022-11-18 19:53:31,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 230 transitions, 1281 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-18 19:53:31,309 INFO L231 Difference]: Finished difference. Result has 237 places, 216 transitions, 1165 flow [2022-11-18 19:53:31,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1165, PETRI_PLACES=237, PETRI_TRANSITIONS=216} [2022-11-18 19:53:31,310 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 68 predicate places. [2022-11-18 19:53:31,310 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 216 transitions, 1165 flow [2022-11-18 19:53:31,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:31,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:31,311 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:31,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:53:31,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:31,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash 931848476, now seen corresponding path program 1 times [2022-11-18 19:53:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:31,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555115697] [2022-11-18 19:53:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:31,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:53:31,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:31,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555115697] [2022-11-18 19:53:31,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555115697] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:31,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665324875] [2022-11-18 19:53:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:31,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:31,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:31,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:31,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:53:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:32,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:53:32,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:53:32,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:53:33,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665324875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:33,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:33,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-18 19:53:33,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822211169] [2022-11-18 19:53:33,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:33,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:53:33,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:33,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:53:33,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:53:33,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:53:33,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 216 transitions, 1165 flow. Second operand has 18 states, 18 states have (on average 152.22222222222223) internal successors, (2740), 18 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:33,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:33,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:53:33,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:35,498 INFO L130 PetriNetUnfolder]: 342/4677 cut-off events. [2022-11-18 19:53:35,499 INFO L131 PetriNetUnfolder]: For 4989/4989 co-relation queries the response was YES. [2022-11-18 19:53:35,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8607 conditions, 4677 events. 342/4677 cut-off events. For 4989/4989 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 36395 event pairs, 82 based on Foata normal form. 24/4580 useless extension candidates. Maximal degree in co-relation 8128. Up to 202 conditions per place. [2022-11-18 19:53:35,548 INFO L137 encePairwiseOnDemand]: 172/184 looper letters, 139 selfloop transitions, 91 changer transitions 5/369 dead transitions. [2022-11-18 19:53:35,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 369 transitions, 2643 flow [2022-11-18 19:53:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:53:35,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 19:53:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4303 transitions. [2022-11-18 19:53:35,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8352096273291926 [2022-11-18 19:53:35,557 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4303 transitions. [2022-11-18 19:53:35,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4303 transitions. [2022-11-18 19:53:35,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:35,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4303 transitions. [2022-11-18 19:53:35,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 153.67857142857142) internal successors, (4303), 28 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 184.0) internal successors, (5336), 29 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,582 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 184.0) internal successors, (5336), 29 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,582 INFO L175 Difference]: Start difference. First operand has 237 places, 216 transitions, 1165 flow. Second operand 28 states and 4303 transitions. [2022-11-18 19:53:35,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 369 transitions, 2643 flow [2022-11-18 19:53:35,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 369 transitions, 2547 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-18 19:53:35,615 INFO L231 Difference]: Finished difference. Result has 270 places, 267 transitions, 1995 flow [2022-11-18 19:53:35,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1995, PETRI_PLACES=270, PETRI_TRANSITIONS=267} [2022-11-18 19:53:35,616 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 101 predicate places. [2022-11-18 19:53:35,616 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 267 transitions, 1995 flow [2022-11-18 19:53:35,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 152.22222222222223) internal successors, (2740), 18 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:35,618 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:35,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:35,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:35,826 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash -10344524, now seen corresponding path program 1 times [2022-11-18 19:53:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:35,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187021664] [2022-11-18 19:53:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 19:53:36,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:36,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187021664] [2022-11-18 19:53:36,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187021664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:36,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499549070] [2022-11-18 19:53:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:36,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:36,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:36,832 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:36,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:53:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:37,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:53:37,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 19:53:37,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 19:53:38,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499549070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:38,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:38,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-18 19:53:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109915398] [2022-11-18 19:53:38,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:38,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:53:38,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:53:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:53:38,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:53:38,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 267 transitions, 1995 flow. Second operand has 22 states, 22 states have (on average 152.63636363636363) internal successors, (3358), 22 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:38,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:38,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:53:38,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:41,856 INFO L130 PetriNetUnfolder]: 479/6351 cut-off events. [2022-11-18 19:53:41,857 INFO L131 PetriNetUnfolder]: For 10534/10534 co-relation queries the response was YES. [2022-11-18 19:53:41,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12271 conditions, 6351 events. 479/6351 cut-off events. For 10534/10534 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 52182 event pairs, 128 based on Foata normal form. 29/6207 useless extension candidates. Maximal degree in co-relation 11563. Up to 316 conditions per place. [2022-11-18 19:53:41,934 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 159 selfloop transitions, 178 changer transitions 2/473 dead transitions. [2022-11-18 19:53:41,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 473 transitions, 4288 flow [2022-11-18 19:53:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 19:53:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 19:53:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5366 transitions. [2022-11-18 19:53:41,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8332298136645963 [2022-11-18 19:53:41,947 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5366 transitions. [2022-11-18 19:53:41,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5366 transitions. [2022-11-18 19:53:41,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:41,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5366 transitions. [2022-11-18 19:53:41,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.31428571428572) internal successors, (5366), 35 states have internal predecessors, (5366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 184.0) internal successors, (6624), 36 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,983 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 184.0) internal successors, (6624), 36 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,983 INFO L175 Difference]: Start difference. First operand has 270 places, 267 transitions, 1995 flow. Second operand 35 states and 5366 transitions. [2022-11-18 19:53:41,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 473 transitions, 4288 flow [2022-11-18 19:53:42,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 473 transitions, 4183 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-18 19:53:42,060 INFO L231 Difference]: Finished difference. Result has 307 places, 349 transitions, 3447 flow [2022-11-18 19:53:42,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3447, PETRI_PLACES=307, PETRI_TRANSITIONS=349} [2022-11-18 19:53:42,061 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 138 predicate places. [2022-11-18 19:53:42,062 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 349 transitions, 3447 flow [2022-11-18 19:53:42,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 152.63636363636363) internal successors, (3358), 22 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:42,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:42,064 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:42,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:42,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:53:42,272 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 621930677, now seen corresponding path program 2 times [2022-11-18 19:53:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:42,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416318885] [2022-11-18 19:53:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:42,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:43,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:43,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416318885] [2022-11-18 19:53:43,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416318885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:43,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580461230] [2022-11-18 19:53:43,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:43,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:43,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:43,376 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:43,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:53:43,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:43,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:43,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:53:43,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:44,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:45,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580461230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:45,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:45,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 19:53:45,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355892139] [2022-11-18 19:53:45,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:45,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:53:45,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:45,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:53:45,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:53:45,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:53:45,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 349 transitions, 3447 flow. Second operand has 32 states, 32 states have (on average 157.71875) internal successors, (5047), 32 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:45,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:53:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:50,566 INFO L130 PetriNetUnfolder]: 564/9353 cut-off events. [2022-11-18 19:53:50,566 INFO L131 PetriNetUnfolder]: For 19347/19347 co-relation queries the response was YES. [2022-11-18 19:53:50,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18474 conditions, 9353 events. 564/9353 cut-off events. For 19347/19347 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 69743 event pairs, 180 based on Foata normal form. 55/9141 useless extension candidates. Maximal degree in co-relation 16781. Up to 622 conditions per place. [2022-11-18 19:53:50,664 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 295 selfloop transitions, 151 changer transitions 1/594 dead transitions. [2022-11-18 19:53:50,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 594 transitions, 6287 flow [2022-11-18 19:53:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 19:53:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-18 19:53:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 7505 transitions. [2022-11-18 19:53:50,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678307123034228 [2022-11-18 19:53:50,680 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 7505 transitions. [2022-11-18 19:53:50,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 7505 transitions. [2022-11-18 19:53:50,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:50,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 7505 transitions. [2022-11-18 19:53:50,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 159.68085106382978) internal successors, (7505), 47 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:50,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 184.0) internal successors, (8832), 48 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:50,723 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 184.0) internal successors, (8832), 48 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:50,724 INFO L175 Difference]: Start difference. First operand has 307 places, 349 transitions, 3447 flow. Second operand 47 states and 7505 transitions. [2022-11-18 19:53:50,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 594 transitions, 6287 flow [2022-11-18 19:53:50,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 594 transitions, 6099 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-11-18 19:53:51,039 INFO L231 Difference]: Finished difference. Result has 349 places, 414 transitions, 4748 flow [2022-11-18 19:53:51,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=3276, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=4748, PETRI_PLACES=349, PETRI_TRANSITIONS=414} [2022-11-18 19:53:51,041 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 180 predicate places. [2022-11-18 19:53:51,041 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 414 transitions, 4748 flow [2022-11-18 19:53:51,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 157.71875) internal successors, (5047), 32 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:51,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:51,044 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:51,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:51,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:53:51,245 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:53:51,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:51,245 INFO L85 PathProgramCache]: Analyzing trace with hash 632562542, now seen corresponding path program 2 times [2022-11-18 19:53:51,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:51,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88410426] [2022-11-18 19:53:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:51,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1167 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:53:52,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:52,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88410426] [2022-11-18 19:53:52,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88410426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:52,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774485219] [2022-11-18 19:53:52,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:52,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:52,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:52,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:53:52,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:52,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:52,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:53:52,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1135 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:53:53,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1135 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:53:54,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774485219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:54,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:54,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 33 [2022-11-18 19:53:54,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786857687] [2022-11-18 19:53:54,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:54,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:53:54,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:54,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:53:54,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:53:54,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:53:54,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 414 transitions, 4748 flow. Second operand has 34 states, 34 states have (on average 152.11764705882354) internal successors, (5172), 34 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:54,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:54,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:53:54,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:01,629 INFO L130 PetriNetUnfolder]: 918/12257 cut-off events. [2022-11-18 19:54:01,630 INFO L131 PetriNetUnfolder]: For 28502/28502 co-relation queries the response was YES. [2022-11-18 19:54:01,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25003 conditions, 12257 events. 918/12257 cut-off events. For 28502/28502 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 105530 event pairs, 301 based on Foata normal form. 24/11968 useless extension candidates. Maximal degree in co-relation 24099. Up to 600 conditions per place. [2022-11-18 19:54:01,927 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 322 selfloop transitions, 289 changer transitions 9/754 dead transitions. [2022-11-18 19:54:01,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 754 transitions, 8703 flow [2022-11-18 19:54:01,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 19:54:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-18 19:54:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 8613 transitions. [2022-11-18 19:54:01,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8358889751552795 [2022-11-18 19:54:01,953 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 8613 transitions. [2022-11-18 19:54:01,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 8613 transitions. [2022-11-18 19:54:01,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:01,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 8613 transitions. [2022-11-18 19:54:01,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 153.80357142857142) internal successors, (8613), 56 states have internal predecessors, (8613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:02,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 184.0) internal successors, (10488), 57 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:02,009 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 184.0) internal successors, (10488), 57 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:02,010 INFO L175 Difference]: Start difference. First operand has 349 places, 414 transitions, 4748 flow. Second operand 56 states and 8613 transitions. [2022-11-18 19:54:02,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 754 transitions, 8703 flow [2022-11-18 19:54:02,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 754 transitions, 8570 flow, removed 16 selfloop flow, removed 12 redundant places. [2022-11-18 19:54:02,209 INFO L231 Difference]: Finished difference. Result has 408 places, 505 transitions, 6957 flow [2022-11-18 19:54:02,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6957, PETRI_PLACES=408, PETRI_TRANSITIONS=505} [2022-11-18 19:54:02,210 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 239 predicate places. [2022-11-18 19:54:02,211 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 505 transitions, 6957 flow [2022-11-18 19:54:02,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 152.11764705882354) internal successors, (5172), 34 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:02,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:02,213 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:02,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:02,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:02,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:54:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:02,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1433984631, now seen corresponding path program 2 times [2022-11-18 19:54:02,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:02,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878057419] [2022-11-18 19:54:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:02,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:54:03,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:03,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878057419] [2022-11-18 19:54:03,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878057419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:03,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718792395] [2022-11-18 19:54:03,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:03,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:03,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:03,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:03,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:54:04,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:54:04,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:04,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:54:04,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:54:04,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:54:05,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718792395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:05,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:05,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 19:54:05,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293542113] [2022-11-18 19:54:05,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:05,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:54:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:05,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:54:05,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:54:05,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:54:05,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 505 transitions, 6957 flow. Second operand has 32 states, 32 states have (on average 152.4375) internal successors, (4878), 32 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:05,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:05,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:54:05,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:17,947 INFO L130 PetriNetUnfolder]: 1582/20010 cut-off events. [2022-11-18 19:54:17,947 INFO L131 PetriNetUnfolder]: For 59777/59777 co-relation queries the response was YES. [2022-11-18 19:54:18,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43108 conditions, 20010 events. 1582/20010 cut-off events. For 59777/59777 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 194002 event pairs, 493 based on Foata normal form. 27/19550 useless extension candidates. Maximal degree in co-relation 42135. Up to 1103 conditions per place. [2022-11-18 19:54:18,207 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 355 selfloop transitions, 592 changer transitions 7/1088 dead transitions. [2022-11-18 19:54:18,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1088 transitions, 16485 flow [2022-11-18 19:54:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 19:54:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-18 19:54:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 7840 transitions. [2022-11-18 19:54:18,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835464620630861 [2022-11-18 19:54:18,223 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 7840 transitions. [2022-11-18 19:54:18,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 7840 transitions. [2022-11-18 19:54:18,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:18,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 7840 transitions. [2022-11-18 19:54:18,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 153.72549019607843) internal successors, (7840), 51 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:18,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 184.0) internal successors, (9568), 52 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:18,259 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 184.0) internal successors, (9568), 52 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:18,259 INFO L175 Difference]: Start difference. First operand has 408 places, 505 transitions, 6957 flow. Second operand 51 states and 7840 transitions. [2022-11-18 19:54:18,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1088 transitions, 16485 flow [2022-11-18 19:54:18,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1088 transitions, 16289 flow, removed 50 selfloop flow, removed 15 redundant places. [2022-11-18 19:54:18,721 INFO L231 Difference]: Finished difference. Result has 458 places, 844 transitions, 14487 flow [2022-11-18 19:54:18,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6798, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=14487, PETRI_PLACES=458, PETRI_TRANSITIONS=844} [2022-11-18 19:54:18,723 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 289 predicate places. [2022-11-18 19:54:18,723 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 844 transitions, 14487 flow [2022-11-18 19:54:18,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 152.4375) internal successors, (4878), 32 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:18,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:18,726 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:18,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:18,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:18,934 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:54:18,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:18,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1510094802, now seen corresponding path program 3 times [2022-11-18 19:54:18,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:18,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128781107] [2022-11-18 19:54:18,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:18,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:54:21,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:21,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128781107] [2022-11-18 19:54:21,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128781107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:21,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566841046] [2022-11-18 19:54:21,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:54:21,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:21,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:21,537 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:21,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:54:22,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-18 19:54:22,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:22,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:54:22,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:54:23,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:54:25,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566841046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:25,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:25,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-11-18 19:54:25,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496914671] [2022-11-18 19:54:25,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:25,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:54:25,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:54:25,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:54:25,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:54:25,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 844 transitions, 14487 flow. Second operand has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:25,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:25,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:54:25,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:47,824 INFO L130 PetriNetUnfolder]: 2611/32231 cut-off events. [2022-11-18 19:54:47,825 INFO L131 PetriNetUnfolder]: For 129517/129517 co-relation queries the response was YES. [2022-11-18 19:54:48,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73065 conditions, 32231 events. 2611/32231 cut-off events. For 129517/129517 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 350000 event pairs, 867 based on Foata normal form. 109/31565 useless extension candidates. Maximal degree in co-relation 71179. Up to 1909 conditions per place. [2022-11-18 19:54:48,410 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 479 selfloop transitions, 1126 changer transitions 12/1751 dead transitions. [2022-11-18 19:54:48,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1751 transitions, 31287 flow [2022-11-18 19:54:48,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-18 19:54:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-11-18 19:54:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 11377 transitions. [2022-11-18 19:54:48,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8355611045828437 [2022-11-18 19:54:48,433 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 11377 transitions. [2022-11-18 19:54:48,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 11377 transitions. [2022-11-18 19:54:48,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:48,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 11377 transitions. [2022-11-18 19:54:48,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 153.74324324324326) internal successors, (11377), 74 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:48,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 184.0) internal successors, (13800), 75 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:48,488 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 184.0) internal successors, (13800), 75 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:48,488 INFO L175 Difference]: Start difference. First operand has 458 places, 844 transitions, 14487 flow. Second operand 74 states and 11377 transitions. [2022-11-18 19:54:48,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1751 transitions, 31287 flow [2022-11-18 19:54:49,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1751 transitions, 30167 flow, removed 477 selfloop flow, removed 15 redundant places. [2022-11-18 19:54:49,462 INFO L231 Difference]: Finished difference. Result has 536 places, 1389 transitions, 27246 flow [2022-11-18 19:54:49,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=13494, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=644, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=27246, PETRI_PLACES=536, PETRI_TRANSITIONS=1389} [2022-11-18 19:54:49,464 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 367 predicate places. [2022-11-18 19:54:49,464 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 1389 transitions, 27246 flow [2022-11-18 19:54:49,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:49,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:49,466 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:49,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:49,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:49,674 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:54:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:49,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1045702618, now seen corresponding path program 4 times [2022-11-18 19:54:49,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:49,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332367729] [2022-11-18 19:54:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:49,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:54:51,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:51,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332367729] [2022-11-18 19:54:51,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332367729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:51,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777147013] [2022-11-18 19:54:51,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:54:51,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:51,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:51,836 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:51,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f76eb7-e6a4-4e30-b7ca-ffc133fc3b26/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:54:53,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:54:53,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:53,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:54:53,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:54:54,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:54:55,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777147013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:55,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:55,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-11-18 19:54:55,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135989494] [2022-11-18 19:54:55,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:55,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:54:55,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:55,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:54:55,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:54:55,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:54:55,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1389 transitions, 27246 flow. Second operand has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:55,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:55,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:54:55,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand