./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:15:27,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:15:27,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:15:27,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:15:27,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:15:27,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:15:27,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:15:27,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:15:27,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:15:27,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:15:27,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:15:27,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:15:27,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:15:27,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:15:27,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:15:27,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:15:27,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:15:27,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:15:27,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:15:27,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:15:27,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:15:27,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:15:27,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:15:27,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:15:27,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:15:27,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:15:27,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:15:27,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:15:27,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:15:27,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:15:27,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:15:27,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:15:27,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:15:27,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:15:27,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:15:27,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:15:27,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:15:27,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:15:27,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:15:27,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:15:27,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:15:27,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:15:27,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:15:27,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:15:27,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:15:27,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:15:27,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:15:27,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:15:27,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:15:27,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:15:27,986 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:15:27,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:15:27,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:15:27,988 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:15:27,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:15:27,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:15:27,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:15:27,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:15:27,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:15:27,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:15:27,991 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:15:27,991 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:15:27,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:15:27,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:15:27,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:15:27,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:15:27,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:15:27,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:15:27,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:15:27,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:15:27,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:15:27,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:15:27,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:15:27,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:15:27,997 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:15:27,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:15:27,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:15:27,998 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_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2022-11-20 12:15:28,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:15:28,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:15:28,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:15:28,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:15:28,409 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:15:28,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-20 12:15:32,234 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:15:32,597 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:15:32,598 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-20 12:15:32,612 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/data/414778f71/72c5a621a43b4588b343c4bd2467bec8/FLAGb4d84ceac [2022-11-20 12:15:32,630 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/data/414778f71/72c5a621a43b4588b343c4bd2467bec8 [2022-11-20 12:15:32,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:15:32,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:15:32,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:15:32,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:15:32,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:15:32,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:32" (1/1) ... [2022-11-20 12:15:32,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb2f178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:32, skipping insertion in model container [2022-11-20 12:15:32,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:32" (1/1) ... [2022-11-20 12:15:32,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:15:32,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:15:33,107 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-20 12:15:33,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:15:33,154 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:15:33,231 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-20 12:15:33,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:15:33,308 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:15:33,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33 WrapperNode [2022-11-20 12:15:33,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:15:33,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:15:33,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:15:33,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:15:33,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,403 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-11-20 12:15:33,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:15:33,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:15:33,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:15:33,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:15:33,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,435 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:15:33,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:15:33,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:15:33,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:15:33,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (1/1) ... [2022-11-20 12:15:33,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:15:33,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:33,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:15:33,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:15:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:15:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:15:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:15:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:15:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:15:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:15:33,541 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:15:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:15:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:15:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:15:33,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:15:33,544 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:15:33,759 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:15:33,762 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:15:34,196 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:15:34,206 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:15:34,206 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 12:15:34,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:34 BoogieIcfgContainer [2022-11-20 12:15:34,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:15:34,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:15:34,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:15:34,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:15:34,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:15:32" (1/3) ... [2022-11-20 12:15:34,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71859082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:15:34, skipping insertion in model container [2022-11-20 12:15:34,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:33" (2/3) ... [2022-11-20 12:15:34,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71859082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:15:34, skipping insertion in model container [2022-11-20 12:15:34,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:34" (3/3) ... [2022-11-20 12:15:34,224 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2022-11-20 12:15:34,236 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:15:34,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:15:34,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 12:15:34,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:15:34,366 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:15:34,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 262 flow [2022-11-20 12:15:34,523 INFO L130 PetriNetUnfolder]: 17/162 cut-off events. [2022-11-20 12:15:34,523 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:15:34,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 162 events. 17/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 369 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-20 12:15:34,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 127 transitions, 262 flow [2022-11-20 12:15:34,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 124 transitions, 256 flow [2022-11-20 12:15:34,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:15:34,560 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;@7af71964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:15:34,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 12:15:34,613 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-20 12:15:34,614 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:15:34,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:34,615 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:34,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 12:15:34,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash 191983421, now seen corresponding path program 1 times [2022-11-20 12:15:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:34,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655682300] [2022-11-20 12:15:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:34,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:35,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:35,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655682300] [2022-11-20 12:15:35,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655682300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:35,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:35,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:35,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802660673] [2022-11-20 12:15:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:35,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:35,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:35,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:35,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 127 [2022-11-20 12:15:35,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:35,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 127 [2022-11-20 12:15:35,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:35,342 INFO L130 PetriNetUnfolder]: 0/114 cut-off events. [2022-11-20 12:15:35,342 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-20 12:15:35,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 114 events. 0/114 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 40/146 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-20 12:15:35,345 INFO L137 encePairwiseOnDemand]: 109/127 looper letters, 10 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2022-11-20 12:15:35,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 112 transitions, 260 flow [2022-11-20 12:15:35,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2022-11-20 12:15:35,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692913385826772 [2022-11-20 12:15:35,374 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2022-11-20 12:15:35,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2022-11-20 12:15:35,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:35,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2022-11-20 12:15:35,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,401 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 256 flow. Second operand 5 states and 552 transitions. [2022-11-20 12:15:35,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 112 transitions, 260 flow [2022-11-20 12:15:35,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:15:35,413 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 240 flow [2022-11-20 12:15:35,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2022-11-20 12:15:35,420 INFO L288 CegarLoopForPetriNet]: 116 programPoint places, 2 predicate places. [2022-11-20 12:15:35,420 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 240 flow [2022-11-20 12:15:35,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:35,422 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:35,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:15:35,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 12:15:35,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:35,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1682824735, now seen corresponding path program 1 times [2022-11-20 12:15:35,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:35,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405375723] [2022-11-20 12:15:35,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:35,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:35,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:35,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405375723] [2022-11-20 12:15:35,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405375723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:35,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:35,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:35,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132725712] [2022-11-20 12:15:35,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:35,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:35,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:35,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2022-11-20 12:15:35,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:35,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2022-11-20 12:15:35,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:35,787 INFO L130 PetriNetUnfolder]: 7/159 cut-off events. [2022-11-20 12:15:35,788 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 12:15:35,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 159 events. 7/159 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 367 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 138. Up to 11 conditions per place. [2022-11-20 12:15:35,790 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 10 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2022-11-20 12:15:35,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 270 flow [2022-11-20 12:15:35,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 526 transitions. [2022-11-20 12:15:35,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8283464566929134 [2022-11-20 12:15:35,796 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 526 transitions. [2022-11-20 12:15:35,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 526 transitions. [2022-11-20 12:15:35,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:35,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 526 transitions. [2022-11-20 12:15:35,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,806 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,806 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 240 flow. Second operand 5 states and 526 transitions. [2022-11-20 12:15:35,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 270 flow [2022-11-20 12:15:35,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 262 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:15:35,815 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 236 flow [2022-11-20 12:15:35,816 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2022-11-20 12:15:35,817 INFO L288 CegarLoopForPetriNet]: 116 programPoint places, 0 predicate places. [2022-11-20 12:15:35,817 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 236 flow [2022-11-20 12:15:35,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:35,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:35,819 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:15:35,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:15:35,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 12:15:35,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:35,823 INFO L85 PathProgramCache]: Analyzing trace with hash 190507188, now seen corresponding path program 1 times [2022-11-20 12:15:35,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:35,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268976806] [2022-11-20 12:15:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:35,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:15:35,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:15:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:15:35,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:15:35,924 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:15:35,926 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-20 12:15:35,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 12:15:35,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 12:15:35,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 12:15:35,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 12:15:35,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 12:15:35,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-20 12:15:35,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-20 12:15:35,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-20 12:15:35,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 12:15:35,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 12:15:35,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 12:15:35,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 12:15:35,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:15:35,936 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 12:15:35,942 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:15:35,942 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 12:15:36,006 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:15:36,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2022-11-20 12:15:36,112 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2022-11-20 12:15:36,113 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:15:36,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 788 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 164. Up to 8 conditions per place. [2022-11-20 12:15:36,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2022-11-20 12:15:36,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2022-11-20 12:15:36,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:15:36,137 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;@7af71964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:15:36,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 12:15:36,157 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-20 12:15:36,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:15:36,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:36,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:36,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:15:36,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:36,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1988212666, now seen corresponding path program 1 times [2022-11-20 12:15:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:36,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130371172] [2022-11-20 12:15:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:36,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:36,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130371172] [2022-11-20 12:15:36,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130371172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:36,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:36,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:36,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25911783] [2022-11-20 12:15:36,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:36,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:36,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:36,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:36,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 165 [2022-11-20 12:15:36,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 165 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:36,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:36,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 165 [2022-11-20 12:15:36,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:36,450 INFO L130 PetriNetUnfolder]: 2/223 cut-off events. [2022-11-20 12:15:36,450 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-20 12:15:36,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 223 events. 2/223 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 519 event pairs, 0 based on Foata normal form. 125/324 useless extension candidates. Maximal degree in co-relation 141. Up to 21 conditions per place. [2022-11-20 12:15:36,453 INFO L137 encePairwiseOnDemand]: 141/165 looper letters, 19 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2022-11-20 12:15:36,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 372 flow [2022-11-20 12:15:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 717 transitions. [2022-11-20 12:15:36,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8690909090909091 [2022-11-20 12:15:36,457 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 717 transitions. [2022-11-20 12:15:36,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 717 transitions. [2022-11-20 12:15:36,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:36,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 717 transitions. [2022-11-20 12:15:36,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:36,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:36,465 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:36,466 INFO L175 Difference]: Start difference. First operand has 151 places, 165 transitions, 348 flow. Second operand 5 states and 717 transitions. [2022-11-20 12:15:36,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 372 flow [2022-11-20 12:15:36,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:15:36,475 INFO L231 Difference]: Finished difference. Result has 157 places, 150 transitions, 344 flow [2022-11-20 12:15:36,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=157, PETRI_TRANSITIONS=150} [2022-11-20 12:15:36,477 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 6 predicate places. [2022-11-20 12:15:36,477 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 150 transitions, 344 flow [2022-11-20 12:15:36,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:36,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:36,478 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:36,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:15:36,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:15:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash 645320618, now seen corresponding path program 1 times [2022-11-20 12:15:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:36,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976981572] [2022-11-20 12:15:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:36,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:36,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:36,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976981572] [2022-11-20 12:15:36,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976981572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:36,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:36,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:36,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788868943] [2022-11-20 12:15:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:36,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:36,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:36,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 165 [2022-11-20 12:15:36,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 150 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:36,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:36,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 165 [2022-11-20 12:15:36,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:37,100 INFO L130 PetriNetUnfolder]: 172/1126 cut-off events. [2022-11-20 12:15:37,100 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2022-11-20 12:15:37,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 1126 events. 172/1126 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8292 event pairs, 102 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 1460. Up to 206 conditions per place. [2022-11-20 12:15:37,113 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 36 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2022-11-20 12:15:37,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 173 transitions, 492 flow [2022-11-20 12:15:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:37,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 686 transitions. [2022-11-20 12:15:37,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8315151515151515 [2022-11-20 12:15:37,118 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 686 transitions. [2022-11-20 12:15:37,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 686 transitions. [2022-11-20 12:15:37,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:37,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 686 transitions. [2022-11-20 12:15:37,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,124 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,125 INFO L175 Difference]: Start difference. First operand has 157 places, 150 transitions, 344 flow. Second operand 5 states and 686 transitions. [2022-11-20 12:15:37,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 173 transitions, 492 flow [2022-11-20 12:15:37,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 173 transitions, 490 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:15:37,132 INFO L231 Difference]: Finished difference. Result has 163 places, 155 transitions, 391 flow [2022-11-20 12:15:37,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=163, PETRI_TRANSITIONS=155} [2022-11-20 12:15:37,135 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 12 predicate places. [2022-11-20 12:15:37,136 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 155 transitions, 391 flow [2022-11-20 12:15:37,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:37,137 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] [2022-11-20 12:15:37,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:15:37,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:15:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:37,138 INFO L85 PathProgramCache]: Analyzing trace with hash -15045015, now seen corresponding path program 1 times [2022-11-20 12:15:37,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:37,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176111977] [2022-11-20 12:15:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:37,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176111977] [2022-11-20 12:15:37,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176111977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:37,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:37,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:37,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140528640] [2022-11-20 12:15:37,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:37,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:37,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:37,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:37,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:37,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 165 [2022-11-20 12:15:37,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 155 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:37,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 165 [2022-11-20 12:15:37,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:37,434 INFO L130 PetriNetUnfolder]: 5/349 cut-off events. [2022-11-20 12:15:37,434 INFO L131 PetriNetUnfolder]: For 104/238 co-relation queries the response was YES. [2022-11-20 12:15:37,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 349 events. 5/349 cut-off events. For 104/238 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1205 event pairs, 0 based on Foata normal form. 16/331 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2022-11-20 12:15:37,439 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 11 selfloop transitions, 8 changer transitions 0/155 dead transitions. [2022-11-20 12:15:37,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 427 flow [2022-11-20 12:15:37,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 672 transitions. [2022-11-20 12:15:37,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8145454545454546 [2022-11-20 12:15:37,442 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 672 transitions. [2022-11-20 12:15:37,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 672 transitions. [2022-11-20 12:15:37,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:37,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 672 transitions. [2022-11-20 12:15:37,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,449 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,449 INFO L175 Difference]: Start difference. First operand has 163 places, 155 transitions, 391 flow. Second operand 5 states and 672 transitions. [2022-11-20 12:15:37,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 427 flow [2022-11-20 12:15:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 155 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:15:37,456 INFO L231 Difference]: Finished difference. Result has 166 places, 155 transitions, 408 flow [2022-11-20 12:15:37,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=166, PETRI_TRANSITIONS=155} [2022-11-20 12:15:37,461 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 15 predicate places. [2022-11-20 12:15:37,461 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 155 transitions, 408 flow [2022-11-20 12:15:37,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:37,467 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:15:37,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:15:37,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:15:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash -466395023, now seen corresponding path program 1 times [2022-11-20 12:15:37,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:37,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247194728] [2022-11-20 12:15:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:37,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:37,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247194728] [2022-11-20 12:15:37,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247194728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161124752] [2022-11-20 12:15:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:37,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:37,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:37,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:37,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:15:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:37,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:15:37,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:37,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:37,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161124752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:37,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:15:37,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 12:15:37,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198833448] [2022-11-20 12:15:37,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:37,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:15:37,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:15:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:15:37,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 165 [2022-11-20 12:15:37,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 155 transitions, 408 flow. Second operand has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:37,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:37,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 165 [2022-11-20 12:15:37,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:38,105 INFO L130 PetriNetUnfolder]: 5/348 cut-off events. [2022-11-20 12:15:38,105 INFO L131 PetriNetUnfolder]: For 109/232 co-relation queries the response was YES. [2022-11-20 12:15:38,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 348 events. 5/348 cut-off events. For 109/232 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1186 event pairs, 0 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 293. Up to 23 conditions per place. [2022-11-20 12:15:38,109 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 13 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2022-11-20 12:15:38,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 440 flow [2022-11-20 12:15:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:15:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:15:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2022-11-20 12:15:38,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-11-20 12:15:38,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 539 transitions. [2022-11-20 12:15:38,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 539 transitions. [2022-11-20 12:15:38,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:38,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 539 transitions. [2022-11-20 12:15:38,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:38,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:38,136 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:38,136 INFO L175 Difference]: Start difference. First operand has 166 places, 155 transitions, 408 flow. Second operand 4 states and 539 transitions. [2022-11-20 12:15:38,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 440 flow [2022-11-20 12:15:38,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 154 transitions, 428 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:15:38,143 INFO L231 Difference]: Finished difference. Result has 165 places, 154 transitions, 402 flow [2022-11-20 12:15:38,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=165, PETRI_TRANSITIONS=154} [2022-11-20 12:15:38,145 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2022-11-20 12:15:38,145 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 154 transitions, 402 flow [2022-11-20 12:15:38,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:38,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:38,146 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] [2022-11-20 12:15:38,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:38,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:38,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:15:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:38,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2002105357, now seen corresponding path program 1 times [2022-11-20 12:15:38,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:38,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013425416] [2022-11-20 12:15:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:38,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:38,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:38,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013425416] [2022-11-20 12:15:38,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013425416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:38,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:38,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:15:38,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062862865] [2022-11-20 12:15:38,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:38,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:38,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:15:38,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 165 [2022-11-20 12:15:38,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 154 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 124.5) internal successors, (747), 6 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:38,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:38,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 165 [2022-11-20 12:15:38,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:39,188 INFO L130 PetriNetUnfolder]: 341/1632 cut-off events. [2022-11-20 12:15:39,189 INFO L131 PetriNetUnfolder]: For 301/302 co-relation queries the response was YES. [2022-11-20 12:15:39,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 1632 events. 341/1632 cut-off events. For 301/302 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13147 event pairs, 57 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 2246. Up to 237 conditions per place. [2022-11-20 12:15:39,210 INFO L137 encePairwiseOnDemand]: 154/165 looper letters, 60 selfloop transitions, 19 changer transitions 0/204 dead transitions. [2022-11-20 12:15:39,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 204 transitions, 710 flow [2022-11-20 12:15:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:15:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:15:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1188 transitions. [2022-11-20 12:15:39,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-11-20 12:15:39,216 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1188 transitions. [2022-11-20 12:15:39,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1188 transitions. [2022-11-20 12:15:39,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:39,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1188 transitions. [2022-11-20 12:15:39,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:39,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:39,225 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:39,254 INFO L175 Difference]: Start difference. First operand has 165 places, 154 transitions, 402 flow. Second operand 9 states and 1188 transitions. [2022-11-20 12:15:39,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 204 transitions, 710 flow [2022-11-20 12:15:39,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 204 transitions, 700 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:15:39,270 INFO L231 Difference]: Finished difference. Result has 176 places, 166 transitions, 518 flow [2022-11-20 12:15:39,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=518, PETRI_PLACES=176, PETRI_TRANSITIONS=166} [2022-11-20 12:15:39,272 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 25 predicate places. [2022-11-20 12:15:39,275 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 166 transitions, 518 flow [2022-11-20 12:15:39,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.5) internal successors, (747), 6 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:39,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:39,277 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:39,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:15:39,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:15:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:39,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1935724450, now seen corresponding path program 1 times [2022-11-20 12:15:39,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:39,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498049794] [2022-11-20 12:15:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:39,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:39,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:39,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498049794] [2022-11-20 12:15:39,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498049794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:39,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:39,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:15:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139544626] [2022-11-20 12:15:39,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:39,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:39,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:39,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:15:39,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 165 [2022-11-20 12:15:39,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 166 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 124.66666666666667) internal successors, (748), 6 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:39,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:39,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 165 [2022-11-20 12:15:39,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:40,128 INFO L130 PetriNetUnfolder]: 319/1739 cut-off events. [2022-11-20 12:15:40,128 INFO L131 PetriNetUnfolder]: For 1028/1049 co-relation queries the response was YES. [2022-11-20 12:15:40,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 1739 events. 319/1739 cut-off events. For 1028/1049 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14292 event pairs, 78 based on Foata normal form. 34/1597 useless extension candidates. Maximal degree in co-relation 2221. Up to 272 conditions per place. [2022-11-20 12:15:40,150 INFO L137 encePairwiseOnDemand]: 154/165 looper letters, 65 selfloop transitions, 19 changer transitions 0/209 dead transitions. [2022-11-20 12:15:40,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 209 transitions, 853 flow [2022-11-20 12:15:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:15:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:15:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1190 transitions. [2022-11-20 12:15:40,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8013468013468014 [2022-11-20 12:15:40,157 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1190 transitions. [2022-11-20 12:15:40,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1190 transitions. [2022-11-20 12:15:40,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:40,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1190 transitions. [2022-11-20 12:15:40,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.22222222222223) internal successors, (1190), 9 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:40,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:40,166 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:40,166 INFO L175 Difference]: Start difference. First operand has 176 places, 166 transitions, 518 flow. Second operand 9 states and 1190 transitions. [2022-11-20 12:15:40,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 209 transitions, 853 flow [2022-11-20 12:15:40,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 209 transitions, 812 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-20 12:15:40,182 INFO L231 Difference]: Finished difference. Result has 182 places, 170 transitions, 565 flow [2022-11-20 12:15:40,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=565, PETRI_PLACES=182, PETRI_TRANSITIONS=170} [2022-11-20 12:15:40,184 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 31 predicate places. [2022-11-20 12:15:40,184 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 170 transitions, 565 flow [2022-11-20 12:15:40,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.66666666666667) internal successors, (748), 6 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:40,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:40,188 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:15:40,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:15:40,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:15:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash -754811315, now seen corresponding path program 1 times [2022-11-20 12:15:40,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:40,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570477531] [2022-11-20 12:15:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:15:40,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:40,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570477531] [2022-11-20 12:15:40,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570477531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:40,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:40,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:40,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172089894] [2022-11-20 12:15:40,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:40,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:40,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:40,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:40,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 165 [2022-11-20 12:15:40,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 170 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:40,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:40,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 165 [2022-11-20 12:15:40,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:40,811 INFO L130 PetriNetUnfolder]: 261/1641 cut-off events. [2022-11-20 12:15:40,811 INFO L131 PetriNetUnfolder]: For 1177/1224 co-relation queries the response was YES. [2022-11-20 12:15:40,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 1641 events. 261/1641 cut-off events. For 1177/1224 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13390 event pairs, 61 based on Foata normal form. 23/1516 useless extension candidates. Maximal degree in co-relation 2730. Up to 362 conditions per place. [2022-11-20 12:15:40,833 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 55 selfloop transitions, 7 changer transitions 0/196 dead transitions. [2022-11-20 12:15:40,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 196 transitions, 827 flow [2022-11-20 12:15:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2022-11-20 12:15:40,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290909090909091 [2022-11-20 12:15:40,837 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2022-11-20 12:15:40,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2022-11-20 12:15:40,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:40,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2022-11-20 12:15:40,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:40,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:40,844 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:40,844 INFO L175 Difference]: Start difference. First operand has 182 places, 170 transitions, 565 flow. Second operand 5 states and 684 transitions. [2022-11-20 12:15:40,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 196 transitions, 827 flow [2022-11-20 12:15:40,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 196 transitions, 799 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:15:40,864 INFO L231 Difference]: Finished difference. Result has 185 places, 173 transitions, 595 flow [2022-11-20 12:15:40,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=185, PETRI_TRANSITIONS=173} [2022-11-20 12:15:40,866 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 34 predicate places. [2022-11-20 12:15:40,867 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 173 transitions, 595 flow [2022-11-20 12:15:40,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:40,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:40,868 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:15:40,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:15:40,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:15:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1395630460, now seen corresponding path program 1 times [2022-11-20 12:15:40,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:40,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913974416] [2022-11-20 12:15:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:15:40,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:15:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:15:40,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:15:40,946 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:15:40,946 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-20 12:15:40,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 12:15:40,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 12:15:40,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 12:15:40,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 12:15:40,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 12:15:40,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 12:15:40,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 12:15:40,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-20 12:15:40,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-20 12:15:40,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-20 12:15:40,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 12:15:40,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 12:15:40,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 12:15:40,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 12:15:40,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 12:15:40,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 12:15:40,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:15:40,951 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:40,952 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:15:40,952 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 12:15:41,009 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:15:41,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 203 transitions, 436 flow [2022-11-20 12:15:41,086 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2022-11-20 12:15:41,086 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 12:15:41,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1395 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2022-11-20 12:15:41,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 203 transitions, 436 flow [2022-11-20 12:15:41,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 203 transitions, 436 flow [2022-11-20 12:15:41,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:15:41,125 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;@7af71964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:15:41,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-20 12:15:41,132 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-20 12:15:41,133 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:15:41,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:41,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:41,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:15:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash 631970037, now seen corresponding path program 1 times [2022-11-20 12:15:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:41,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639524825] [2022-11-20 12:15:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:41,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:41,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639524825] [2022-11-20 12:15:41,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639524825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:41,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:41,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192036565] [2022-11-20 12:15:41,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:41,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:41,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:41,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 203 [2022-11-20 12:15:41,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 203 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:41,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:41,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 203 [2022-11-20 12:15:41,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:41,371 INFO L130 PetriNetUnfolder]: 7/359 cut-off events. [2022-11-20 12:15:41,371 INFO L131 PetriNetUnfolder]: For 76/184 co-relation queries the response was YES. [2022-11-20 12:15:41,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 359 events. 7/359 cut-off events. For 76/184 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1119 event pairs, 1 based on Foata normal form. 305/620 useless extension candidates. Maximal degree in co-relation 260. Up to 40 conditions per place. [2022-11-20 12:15:41,376 INFO L137 encePairwiseOnDemand]: 173/203 looper letters, 21 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2022-11-20 12:15:41,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 452 flow [2022-11-20 12:15:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 875 transitions. [2022-11-20 12:15:41,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2022-11-20 12:15:41,380 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 875 transitions. [2022-11-20 12:15:41,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 875 transitions. [2022-11-20 12:15:41,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:41,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 875 transitions. [2022-11-20 12:15:41,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:41,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:41,387 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:41,387 INFO L175 Difference]: Start difference. First operand has 184 places, 203 transitions, 436 flow. Second operand 5 states and 875 transitions. [2022-11-20 12:15:41,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 186 transitions, 452 flow [2022-11-20 12:15:41,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 186 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:15:41,393 INFO L231 Difference]: Finished difference. Result has 190 places, 182 transitions, 420 flow [2022-11-20 12:15:41,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=190, PETRI_TRANSITIONS=182} [2022-11-20 12:15:41,396 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 6 predicate places. [2022-11-20 12:15:41,396 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 182 transitions, 420 flow [2022-11-20 12:15:41,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:41,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:41,397 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:41,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:15:41,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:15:41,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash -523784295, now seen corresponding path program 1 times [2022-11-20 12:15:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:41,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564792996] [2022-11-20 12:15:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:41,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:41,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:41,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564792996] [2022-11-20 12:15:41,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564792996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:41,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:41,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:41,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824441982] [2022-11-20 12:15:41,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:41,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:41,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:41,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:41,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 203 [2022-11-20 12:15:41,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 182 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:41,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:41,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 203 [2022-11-20 12:15:41,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:43,703 INFO L130 PetriNetUnfolder]: 1866/8397 cut-off events. [2022-11-20 12:15:43,704 INFO L131 PetriNetUnfolder]: For 1108/1108 co-relation queries the response was YES. [2022-11-20 12:15:43,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11846 conditions, 8397 events. 1866/8397 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 94248 event pairs, 837 based on Foata normal form. 0/7379 useless extension candidates. Maximal degree in co-relation 11778. Up to 1995 conditions per place. [2022-11-20 12:15:43,818 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 52 selfloop transitions, 8 changer transitions 0/217 dead transitions. [2022-11-20 12:15:43,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 217 transitions, 652 flow [2022-11-20 12:15:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 834 transitions. [2022-11-20 12:15:43,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216748768472907 [2022-11-20 12:15:43,823 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 834 transitions. [2022-11-20 12:15:43,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 834 transitions. [2022-11-20 12:15:43,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:43,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 834 transitions. [2022-11-20 12:15:43,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:43,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:43,830 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:43,831 INFO L175 Difference]: Start difference. First operand has 190 places, 182 transitions, 420 flow. Second operand 5 states and 834 transitions. [2022-11-20 12:15:43,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 217 transitions, 652 flow [2022-11-20 12:15:43,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 217 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:15:43,838 INFO L231 Difference]: Finished difference. Result has 196 places, 189 transitions, 482 flow [2022-11-20 12:15:43,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=196, PETRI_TRANSITIONS=189} [2022-11-20 12:15:43,840 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 12 predicate places. [2022-11-20 12:15:43,841 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 189 transitions, 482 flow [2022-11-20 12:15:43,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:43,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:43,842 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] [2022-11-20 12:15:43,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:15:43,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:15:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:43,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1743253244, now seen corresponding path program 1 times [2022-11-20 12:15:43,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:43,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113822872] [2022-11-20 12:15:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:43,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:43,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113822872] [2022-11-20 12:15:43,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113822872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:43,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:43,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:43,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374436418] [2022-11-20 12:15:43,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:43,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:43,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:43,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:43,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:43,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 203 [2022-11-20 12:15:43,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 189 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:43,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:43,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 203 [2022-11-20 12:15:43,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:44,267 INFO L130 PetriNetUnfolder]: 37/862 cut-off events. [2022-11-20 12:15:44,268 INFO L131 PetriNetUnfolder]: For 289/708 co-relation queries the response was YES. [2022-11-20 12:15:44,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 862 events. 37/862 cut-off events. For 289/708 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5195 event pairs, 7 based on Foata normal form. 41/792 useless extension candidates. Maximal degree in co-relation 774. Up to 52 conditions per place. [2022-11-20 12:15:44,278 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 13 selfloop transitions, 8 changer transitions 0/189 dead transitions. [2022-11-20 12:15:44,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 189 transitions, 522 flow [2022-11-20 12:15:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 824 transitions. [2022-11-20 12:15:44,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8118226600985222 [2022-11-20 12:15:44,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 824 transitions. [2022-11-20 12:15:44,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 824 transitions. [2022-11-20 12:15:44,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:44,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 824 transitions. [2022-11-20 12:15:44,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:44,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:44,290 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:44,290 INFO L175 Difference]: Start difference. First operand has 196 places, 189 transitions, 482 flow. Second operand 5 states and 824 transitions. [2022-11-20 12:15:44,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 189 transitions, 522 flow [2022-11-20 12:15:44,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 189 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:15:44,296 INFO L231 Difference]: Finished difference. Result has 199 places, 189 transitions, 498 flow [2022-11-20 12:15:44,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=199, PETRI_TRANSITIONS=189} [2022-11-20 12:15:44,298 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 15 predicate places. [2022-11-20 12:15:44,298 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 189 transitions, 498 flow [2022-11-20 12:15:44,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:44,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:44,300 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:15:44,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:15:44,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:15:44,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:44,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1793723639, now seen corresponding path program 1 times [2022-11-20 12:15:44,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:44,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915222653] [2022-11-20 12:15:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:44,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:44,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:44,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:44,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915222653] [2022-11-20 12:15:44,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915222653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:44,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389987445] [2022-11-20 12:15:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:44,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:44,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:44,425 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:44,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:15:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:44,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:15:44,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:44,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:44,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389987445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:44,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:15:44,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 12:15:44,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358401673] [2022-11-20 12:15:44,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:44,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:15:44,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:15:44,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:15:44,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 203 [2022-11-20 12:15:44,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 189 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:44,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:44,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 203 [2022-11-20 12:15:44,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:44,900 INFO L130 PetriNetUnfolder]: 37/860 cut-off events. [2022-11-20 12:15:44,900 INFO L131 PetriNetUnfolder]: For 291/671 co-relation queries the response was YES. [2022-11-20 12:15:44,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 860 events. 37/860 cut-off events. For 291/671 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5178 event pairs, 7 based on Foata normal form. 15/764 useless extension candidates. Maximal degree in co-relation 774. Up to 62 conditions per place. [2022-11-20 12:15:44,913 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 15 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2022-11-20 12:15:44,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 188 transitions, 534 flow [2022-11-20 12:15:44,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:15:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:15:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 661 transitions. [2022-11-20 12:15:44,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8140394088669951 [2022-11-20 12:15:44,917 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 661 transitions. [2022-11-20 12:15:44,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 661 transitions. [2022-11-20 12:15:44,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:44,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 661 transitions. [2022-11-20 12:15:44,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2022-11-20 12:15:44,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:44,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:44,923 INFO L175 Difference]: Start difference. First operand has 199 places, 189 transitions, 498 flow. Second operand 4 states and 661 transitions. [2022-11-20 12:15:44,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 188 transitions, 534 flow [2022-11-20 12:15:44,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 188 transitions, 522 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:15:44,930 INFO L231 Difference]: Finished difference. Result has 198 places, 188 transitions, 492 flow [2022-11-20 12:15:44,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=492, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2022-11-20 12:15:44,931 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 14 predicate places. [2022-11-20 12:15:44,932 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 492 flow [2022-11-20 12:15:44,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:44,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:44,933 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] [2022-11-20 12:15:44,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:45,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:15:45,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:15:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash -171865967, now seen corresponding path program 1 times [2022-11-20 12:15:45,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:45,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913448411] [2022-11-20 12:15:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:45,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:45,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:45,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913448411] [2022-11-20 12:15:45,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913448411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:45,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:45,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:15:45,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108556036] [2022-11-20 12:15:45,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:45,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:45,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:45,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:45,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:15:45,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-20 12:15:45,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 492 flow. Second operand has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:45,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:45,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-20 12:15:45,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:49,481 INFO L130 PetriNetUnfolder]: 4005/14521 cut-off events. [2022-11-20 12:15:49,482 INFO L131 PetriNetUnfolder]: For 4223/4278 co-relation queries the response was YES. [2022-11-20 12:15:49,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23598 conditions, 14521 events. 4005/14521 cut-off events. For 4223/4278 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 171052 event pairs, 1089 based on Foata normal form. 27/12799 useless extension candidates. Maximal degree in co-relation 14874. Up to 2727 conditions per place. [2022-11-20 12:15:49,684 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 100 selfloop transitions, 27 changer transitions 0/278 dead transitions. [2022-11-20 12:15:49,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 278 transitions, 1072 flow [2022-11-20 12:15:49,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:15:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:15:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1470 transitions. [2022-11-20 12:15:49,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8045977011494253 [2022-11-20 12:15:49,689 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1470 transitions. [2022-11-20 12:15:49,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1470 transitions. [2022-11-20 12:15:49,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:49,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1470 transitions. [2022-11-20 12:15:49,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.33333333333334) internal successors, (1470), 9 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,701 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,701 INFO L175 Difference]: Start difference. First operand has 198 places, 188 transitions, 492 flow. Second operand 9 states and 1470 transitions. [2022-11-20 12:15:49,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 278 transitions, 1072 flow [2022-11-20 12:15:49,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 278 transitions, 1062 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:15:49,719 INFO L231 Difference]: Finished difference. Result has 209 places, 207 transitions, 686 flow [2022-11-20 12:15:49,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=686, PETRI_PLACES=209, PETRI_TRANSITIONS=207} [2022-11-20 12:15:49,720 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 25 predicate places. [2022-11-20 12:15:49,720 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 207 transitions, 686 flow [2022-11-20 12:15:49,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:49,721 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] [2022-11-20 12:15:49,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:15:49,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:15:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:49,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1032876879, now seen corresponding path program 1 times [2022-11-20 12:15:49,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:49,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070267178] [2022-11-20 12:15:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:49,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:49,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:49,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070267178] [2022-11-20 12:15:49,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070267178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:49,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:49,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:15:49,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333535105] [2022-11-20 12:15:49,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:49,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:49,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:15:49,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-20 12:15:49,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 207 transitions, 686 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) [2022-11-20 12:15:49,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:49,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-20 12:15:49,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:53,688 INFO L130 PetriNetUnfolder]: 3800/13805 cut-off events. [2022-11-20 12:15:53,688 INFO L131 PetriNetUnfolder]: For 13134/13294 co-relation queries the response was YES. [2022-11-20 12:15:53,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27407 conditions, 13805 events. 3800/13805 cut-off events. For 13134/13294 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 163629 event pairs, 1109 based on Foata normal form. 226/12652 useless extension candidates. Maximal degree in co-relation 18527. Up to 2976 conditions per place. [2022-11-20 12:15:53,860 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 107 selfloop transitions, 27 changer transitions 0/285 dead transitions. [2022-11-20 12:15:53,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 285 transitions, 1331 flow [2022-11-20 12:15:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:15:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:15:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1468 transitions. [2022-11-20 12:15:53,865 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8035030103995622 [2022-11-20 12:15:53,866 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1468 transitions. [2022-11-20 12:15:53,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1468 transitions. [2022-11-20 12:15:53,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:53,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1468 transitions. [2022-11-20 12:15:53,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.11111111111111) internal successors, (1468), 9 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:53,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:53,900 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:53,900 INFO L175 Difference]: Start difference. First operand has 209 places, 207 transitions, 686 flow. Second operand 9 states and 1468 transitions. [2022-11-20 12:15:53,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 285 transitions, 1331 flow [2022-11-20 12:15:53,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 285 transitions, 1264 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-20 12:15:53,953 INFO L231 Difference]: Finished difference. Result has 215 places, 215 transitions, 767 flow [2022-11-20 12:15:53,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=767, PETRI_PLACES=215, PETRI_TRANSITIONS=215} [2022-11-20 12:15:53,956 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 31 predicate places. [2022-11-20 12:15:53,956 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 215 transitions, 767 flow [2022-11-20 12:15:53,957 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) [2022-11-20 12:15:53,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:53,957 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:15:53,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:15:53,958 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:15:53,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash -704543200, now seen corresponding path program 1 times [2022-11-20 12:15:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:53,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161594355] [2022-11-20 12:15:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:53,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:15:54,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:54,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161594355] [2022-11-20 12:15:54,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161594355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:54,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:54,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:54,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871652867] [2022-11-20 12:15:54,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:54,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:54,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:54,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:54,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:54,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 203 [2022-11-20 12:15:54,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 215 transitions, 767 flow. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:54,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:54,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 203 [2022-11-20 12:15:54,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:58,162 INFO L130 PetriNetUnfolder]: 4301/18335 cut-off events. [2022-11-20 12:15:58,162 INFO L131 PetriNetUnfolder]: For 17048/17450 co-relation queries the response was YES. [2022-11-20 12:15:58,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35989 conditions, 18335 events. 4301/18335 cut-off events. For 17048/17450 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 235570 event pairs, 1616 based on Foata normal form. 225/16570 useless extension candidates. Maximal degree in co-relation 27835. Up to 4746 conditions per place. [2022-11-20 12:15:58,423 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 93 selfloop transitions, 11 changer transitions 0/264 dead transitions. [2022-11-20 12:15:58,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 264 transitions, 1283 flow [2022-11-20 12:15:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 832 transitions. [2022-11-20 12:15:58,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819704433497537 [2022-11-20 12:15:58,430 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 832 transitions. [2022-11-20 12:15:58,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 832 transitions. [2022-11-20 12:15:58,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:58,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 832 transitions. [2022-11-20 12:15:58,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:58,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:58,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:58,439 INFO L175 Difference]: Start difference. First operand has 215 places, 215 transitions, 767 flow. Second operand 5 states and 832 transitions. [2022-11-20 12:15:58,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 264 transitions, 1283 flow [2022-11-20 12:15:58,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 264 transitions, 1241 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:15:58,549 INFO L231 Difference]: Finished difference. Result has 218 places, 220 transitions, 817 flow [2022-11-20 12:15:58,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=817, PETRI_PLACES=218, PETRI_TRANSITIONS=220} [2022-11-20 12:15:58,550 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 34 predicate places. [2022-11-20 12:15:58,551 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 220 transitions, 817 flow [2022-11-20 12:15:58,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:58,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:58,552 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:15:58,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:15:58,553 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:15:58,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1112982110, now seen corresponding path program 1 times [2022-11-20 12:15:58,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:58,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963570944] [2022-11-20 12:15:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:58,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:15:58,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:58,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963570944] [2022-11-20 12:15:58,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963570944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:58,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:58,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:15:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76025145] [2022-11-20 12:15:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:58,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:58,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:15:58,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-20 12:15:58,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 220 transitions, 817 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) [2022-11-20 12:15:58,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:58,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-20 12:15:58,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:06,963 INFO L130 PetriNetUnfolder]: 9325/35764 cut-off events. [2022-11-20 12:16:06,963 INFO L131 PetriNetUnfolder]: For 32404/33655 co-relation queries the response was YES. [2022-11-20 12:16:07,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71620 conditions, 35764 events. 9325/35764 cut-off events. For 32404/33655 co-relation queries the response was YES. Maximal size of possible extension queue 1621. Compared 502222 event pairs, 3517 based on Foata normal form. 444/32613 useless extension candidates. Maximal degree in co-relation 49371. Up to 7085 conditions per place. [2022-11-20 12:16:07,496 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 149 selfloop transitions, 46 changer transitions 0/350 dead transitions. [2022-11-20 12:16:07,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 350 transitions, 1963 flow [2022-11-20 12:16:07,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:16:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:16:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1467 transitions. [2022-11-20 12:16:07,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8029556650246306 [2022-11-20 12:16:07,504 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1467 transitions. [2022-11-20 12:16:07,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1467 transitions. [2022-11-20 12:16:07,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:07,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1467 transitions. [2022-11-20 12:16:07,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:07,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:07,520 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:07,521 INFO L175 Difference]: Start difference. First operand has 218 places, 220 transitions, 817 flow. Second operand 9 states and 1467 transitions. [2022-11-20 12:16:07,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 350 transitions, 1963 flow [2022-11-20 12:16:07,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 350 transitions, 1957 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:16:07,794 INFO L231 Difference]: Finished difference. Result has 231 places, 255 transitions, 1301 flow [2022-11-20 12:16:07,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1301, PETRI_PLACES=231, PETRI_TRANSITIONS=255} [2022-11-20 12:16:07,796 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 47 predicate places. [2022-11-20 12:16:07,797 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 255 transitions, 1301 flow [2022-11-20 12:16:07,798 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) [2022-11-20 12:16:07,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:07,798 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:16:07,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:16:07,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:16:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash -952368402, now seen corresponding path program 1 times [2022-11-20 12:16:07,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:07,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200752267] [2022-11-20 12:16:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:08,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:08,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200752267] [2022-11-20 12:16:08,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200752267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:16:08,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468523973] [2022-11-20 12:16:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:08,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:08,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:08,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:08,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:16:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:08,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:16:08,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:08,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:08,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468523973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:08,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:16:08,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-20 12:16:08,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535484945] [2022-11-20 12:16:08,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:08,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:16:08,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:08,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:16:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:16:08,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 203 [2022-11-20 12:16:08,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 255 transitions, 1301 flow. Second operand has 14 states, 14 states have (on average 119.92857142857143) internal successors, (1679), 14 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:08,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:08,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 203 [2022-11-20 12:16:08,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:18,609 INFO L130 PetriNetUnfolder]: 8737/33379 cut-off events. [2022-11-20 12:16:18,609 INFO L131 PetriNetUnfolder]: For 46137/46847 co-relation queries the response was YES. [2022-11-20 12:16:18,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70247 conditions, 33379 events. 8737/33379 cut-off events. For 46137/46847 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 438329 event pairs, 1183 based on Foata normal form. 2344/33358 useless extension candidates. Maximal degree in co-relation 57302. Up to 6270 conditions per place. [2022-11-20 12:16:18,949 INFO L137 encePairwiseOnDemand]: 178/203 looper letters, 489 selfloop transitions, 232 changer transitions 0/843 dead transitions. [2022-11-20 12:16:18,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 843 transitions, 5590 flow [2022-11-20 12:16:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 12:16:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 12:16:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5844 transitions. [2022-11-20 12:16:18,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6397372742200328 [2022-11-20 12:16:18,965 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5844 transitions. [2022-11-20 12:16:18,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5844 transitions. [2022-11-20 12:16:18,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:18,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5844 transitions. [2022-11-20 12:16:18,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 129.86666666666667) internal successors, (5844), 45 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:19,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 203.0) internal successors, (9338), 46 states have internal predecessors, (9338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:19,009 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 203.0) internal successors, (9338), 46 states have internal predecessors, (9338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:19,009 INFO L175 Difference]: Start difference. First operand has 231 places, 255 transitions, 1301 flow. Second operand 45 states and 5844 transitions. [2022-11-20 12:16:19,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 843 transitions, 5590 flow [2022-11-20 12:16:19,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 843 transitions, 5523 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-20 12:16:19,676 INFO L231 Difference]: Finished difference. Result has 291 places, 444 transitions, 3412 flow [2022-11-20 12:16:19,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3412, PETRI_PLACES=291, PETRI_TRANSITIONS=444} [2022-11-20 12:16:19,678 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 107 predicate places. [2022-11-20 12:16:19,678 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 444 transitions, 3412 flow [2022-11-20 12:16:19,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 119.92857142857143) internal successors, (1679), 14 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:19,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:19,679 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:16:19,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:19,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-20 12:16:19,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:16:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash -142706312, now seen corresponding path program 1 times [2022-11-20 12:16:19,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:19,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033344544] [2022-11-20 12:16:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:19,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:16:20,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:20,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033344544] [2022-11-20 12:16:20,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033344544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:20,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:20,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:16:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765478557] [2022-11-20 12:16:20,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:20,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:16:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:16:20,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:16:20,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-20 12:16:20,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 444 transitions, 3412 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:20,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:20,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-20 12:16:20,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:27,099 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([786] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][405], [419#true, 455#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 404#(<= ~global~0 1), Black: 411#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 405#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 403#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 409#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), 1006#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 430#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 423#(<= 1 ~global~0), 400#true, t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 437#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 436#(= ~global~0 0), Black: 439#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 189#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 190#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 192#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 918#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 449#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 444#true, Black: 447#(= |t_funThread2of3ForFork0_#t~post5| 0), 105#L702-16true, Black: 200#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 448#(<= ~global~0 1), Black: 199#(= ~global~0 0), Black: 202#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 453#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 908#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 906#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 916#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 970#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 948#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 912#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 914#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 958#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 952#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 936#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 934#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 968#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 954#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 960#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 944#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 942#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 940#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 964#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 5#L711-5true, 207#true]) [2022-11-20 12:16:27,099 INFO L383 tUnfolder$Statistics]: this new event has 170 ancestors and is cut-off event [2022-11-20 12:16:27,099 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-20 12:16:27,099 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-20 12:16:27,099 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-20 12:16:27,143 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([786] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][219], [419#true, Black: 404#(<= ~global~0 1), Black: 411#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 405#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 403#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 409#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 430#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 423#(<= 1 ~global~0), 400#true, t_funThread1of3ForFork0NotInUse, 141#L702-17true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 437#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 436#(= ~global~0 0), Black: 439#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 189#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 190#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 192#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 918#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 455#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 449#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 444#true, Black: 447#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 200#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 199#(= ~global~0 0), Black: 202#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 453#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 908#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 906#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 1001#true, Black: 916#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 448#(<= ~global~0 1), Black: 970#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 948#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 912#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 914#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 958#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 952#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 936#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 934#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 968#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 954#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 960#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 944#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 942#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 940#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 964#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 5#L711-5true, 207#true]) [2022-11-20 12:16:27,143 INFO L383 tUnfolder$Statistics]: this new event has 171 ancestors and is cut-off event [2022-11-20 12:16:27,144 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-11-20 12:16:27,144 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-11-20 12:16:27,144 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-11-20 12:16:27,213 INFO L130 PetriNetUnfolder]: 3582/26169 cut-off events. [2022-11-20 12:16:27,213 INFO L131 PetriNetUnfolder]: For 60436/61527 co-relation queries the response was YES. [2022-11-20 12:16:27,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53212 conditions, 26169 events. 3582/26169 cut-off events. For 60436/61527 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 383429 event pairs, 1407 based on Foata normal form. 392/23519 useless extension candidates. Maximal degree in co-relation 52220. Up to 4589 conditions per place. [2022-11-20 12:16:27,866 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 219 selfloop transitions, 63 changer transitions 0/518 dead transitions. [2022-11-20 12:16:27,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 518 transitions, 4569 flow [2022-11-20 12:16:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:16:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:16:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1461 transitions. [2022-11-20 12:16:27,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7996715927750411 [2022-11-20 12:16:27,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1461 transitions. [2022-11-20 12:16:27,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1461 transitions. [2022-11-20 12:16:27,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:27,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1461 transitions. [2022-11-20 12:16:27,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 162.33333333333334) internal successors, (1461), 9 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:27,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:27,880 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:27,881 INFO L175 Difference]: Start difference. First operand has 291 places, 444 transitions, 3412 flow. Second operand 9 states and 1461 transitions. [2022-11-20 12:16:27,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 518 transitions, 4569 flow [2022-11-20 12:16:28,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 518 transitions, 4117 flow, removed 178 selfloop flow, removed 9 redundant places. [2022-11-20 12:16:28,227 INFO L231 Difference]: Finished difference. Result has 291 places, 446 transitions, 3165 flow [2022-11-20 12:16:28,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3165, PETRI_PLACES=291, PETRI_TRANSITIONS=446} [2022-11-20 12:16:28,228 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 107 predicate places. [2022-11-20 12:16:28,229 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 446 transitions, 3165 flow [2022-11-20 12:16:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:28,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:28,229 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:16:28,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:16:28,230 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:16:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash 876687144, now seen corresponding path program 1 times [2022-11-20 12:16:28,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:28,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438660786] [2022-11-20 12:16:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:28,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:16:28,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:28,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438660786] [2022-11-20 12:16:28,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438660786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:28,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:28,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:16:28,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675646646] [2022-11-20 12:16:28,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:28,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:16:28,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:16:28,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:16:28,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 203 [2022-11-20 12:16:28,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 446 transitions, 3165 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:28,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:28,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 203 [2022-11-20 12:16:28,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:34,750 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([786] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][207], [419#true, 1015#true, 455#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 404#(<= ~global~0 1), Black: 411#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 405#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 403#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 409#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), 1006#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 430#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 423#(<= 1 ~global~0), 400#true, t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 437#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 436#(= ~global~0 0), Black: 439#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 189#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 190#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 192#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 918#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 449#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 447#(= |t_funThread2of3ForFork0_#t~post5| 0), 105#L702-16true, Black: 200#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 199#(= ~global~0 0), Black: 448#(<= ~global~0 1), Black: 453#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 202#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 908#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 906#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 916#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 970#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 948#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 912#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 914#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 958#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 952#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 936#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 934#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 968#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 954#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 960#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 944#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 942#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 940#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 964#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 5#L711-5true, Black: 1012#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post7|)), 207#true]) [2022-11-20 12:16:34,751 INFO L383 tUnfolder$Statistics]: this new event has 170 ancestors and is cut-off event [2022-11-20 12:16:34,751 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-20 12:16:34,751 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-20 12:16:34,751 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-20 12:16:34,907 INFO L130 PetriNetUnfolder]: 3049/24475 cut-off events. [2022-11-20 12:16:34,907 INFO L131 PetriNetUnfolder]: For 52629/53920 co-relation queries the response was YES. [2022-11-20 12:16:35,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47852 conditions, 24475 events. 3049/24475 cut-off events. For 52629/53920 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 356059 event pairs, 1443 based on Foata normal form. 411/21869 useless extension candidates. Maximal degree in co-relation 46891. Up to 4593 conditions per place. [2022-11-20 12:16:35,157 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 201 selfloop transitions, 15 changer transitions 0/492 dead transitions. [2022-11-20 12:16:35,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 492 transitions, 4065 flow [2022-11-20 12:16:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:16:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 830 transitions. [2022-11-20 12:16:35,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177339901477833 [2022-11-20 12:16:35,160 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 830 transitions. [2022-11-20 12:16:35,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 830 transitions. [2022-11-20 12:16:35,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:35,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 830 transitions. [2022-11-20 12:16:35,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,173 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,173 INFO L175 Difference]: Start difference. First operand has 291 places, 446 transitions, 3165 flow. Second operand 5 states and 830 transitions. [2022-11-20 12:16:35,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 492 transitions, 4065 flow [2022-11-20 12:16:35,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 492 transitions, 3977 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-20 12:16:35,392 INFO L231 Difference]: Finished difference. Result has 294 places, 450 transitions, 3181 flow [2022-11-20 12:16:35,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3090, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3181, PETRI_PLACES=294, PETRI_TRANSITIONS=450} [2022-11-20 12:16:35,393 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 110 predicate places. [2022-11-20 12:16:35,393 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 450 transitions, 3181 flow [2022-11-20 12:16:35,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:35,394 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2022-11-20 12:16:35,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:16:35,394 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:16:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:35,395 INFO L85 PathProgramCache]: Analyzing trace with hash -73104189, now seen corresponding path program 1 times [2022-11-20 12:16:35,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:35,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853045745] [2022-11-20 12:16:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:35,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:16:35,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:16:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:16:35,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:16:35,440 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:16:35,440 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-20 12:16:35,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-20 12:16:35,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-20 12:16:35,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-20 12:16:35,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-20 12:16:35,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-20 12:16:35,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-20 12:16:35,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-20 12:16:35,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-20 12:16:35,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-20 12:16:35,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-20 12:16:35,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-20 12:16:35,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-20 12:16:35,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-20 12:16:35,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-20 12:16:35,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-20 12:16:35,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-20 12:16:35,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-20 12:16:35,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-20 12:16:35,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-20 12:16:35,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-20 12:16:35,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:16:35,446 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:35,446 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:16:35,447 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 12:16:35,476 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 12:16:35,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 241 transitions, 526 flow [2022-11-20 12:16:35,591 INFO L130 PetriNetUnfolder]: 81/658 cut-off events. [2022-11-20 12:16:35,591 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-20 12:16:35,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 658 events. 81/658 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2533 event pairs, 6 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 443. Up to 32 conditions per place. [2022-11-20 12:16:35,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 241 transitions, 526 flow [2022-11-20 12:16:35,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 241 transitions, 526 flow [2022-11-20 12:16:35,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:16:35,608 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;@7af71964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:16:35,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 12:16:35,613 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-20 12:16:35,614 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:16:35,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:35,614 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:35,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:16:35,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:35,615 INFO L85 PathProgramCache]: Analyzing trace with hash -537403062, now seen corresponding path program 1 times [2022-11-20 12:16:35,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:35,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241705564] [2022-11-20 12:16:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:35,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:35,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241705564] [2022-11-20 12:16:35,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241705564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:35,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:35,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:16:35,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837034128] [2022-11-20 12:16:35,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:35,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:16:35,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:35,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:16:35,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:16:35,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-20 12:16:35,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 241 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:35,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-20 12:16:35,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:35,856 INFO L130 PetriNetUnfolder]: 20/575 cut-off events. [2022-11-20 12:16:35,856 INFO L131 PetriNetUnfolder]: For 187/403 co-relation queries the response was YES. [2022-11-20 12:16:35,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 575 events. 20/575 cut-off events. For 187/403 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2331 event pairs, 6 based on Foata normal form. 629/1128 useless extension candidates. Maximal degree in co-relation 429. Up to 71 conditions per place. [2022-11-20 12:16:35,864 INFO L137 encePairwiseOnDemand]: 205/241 looper letters, 23 selfloop transitions, 4 changer transitions 0/218 dead transitions. [2022-11-20 12:16:35,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 218 transitions, 534 flow [2022-11-20 12:16:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:35,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:16:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1033 transitions. [2022-11-20 12:16:35,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8572614107883817 [2022-11-20 12:16:35,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1033 transitions. [2022-11-20 12:16:35,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1033 transitions. [2022-11-20 12:16:35,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:35,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1033 transitions. [2022-11-20 12:16:35,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.6) internal successors, (1033), 5 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,875 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,875 INFO L175 Difference]: Start difference. First operand has 217 places, 241 transitions, 526 flow. Second operand 5 states and 1033 transitions. [2022-11-20 12:16:35,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 218 transitions, 534 flow [2022-11-20 12:16:35,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 218 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:16:35,880 INFO L231 Difference]: Finished difference. Result has 223 places, 214 transitions, 498 flow [2022-11-20 12:16:35,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=223, PETRI_TRANSITIONS=214} [2022-11-20 12:16:35,883 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 6 predicate places. [2022-11-20 12:16:35,883 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 214 transitions, 498 flow [2022-11-20 12:16:35,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:35,884 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:35,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:16:35,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:16:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash -401290322, now seen corresponding path program 1 times [2022-11-20 12:16:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:35,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571307565] [2022-11-20 12:16:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:35,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571307565] [2022-11-20 12:16:35,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571307565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:35,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:35,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:16:35,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860770655] [2022-11-20 12:16:35,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:35,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:16:35,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:35,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:16:35,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:16:35,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 241 [2022-11-20 12:16:35,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 214 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:35,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:35,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 241 [2022-11-20 12:16:35,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:47,154 INFO L130 PetriNetUnfolder]: 15402/57263 cut-off events. [2022-11-20 12:16:47,155 INFO L131 PetriNetUnfolder]: For 9960/9960 co-relation queries the response was YES. [2022-11-20 12:16:47,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82820 conditions, 57263 events. 15402/57263 cut-off events. For 9960/9960 co-relation queries the response was YES. Maximal size of possible extension queue 1658. Compared 817472 event pairs, 8862 based on Foata normal form. 0/49665 useless extension candidates. Maximal degree in co-relation 82751. Up to 15267 conditions per place. [2022-11-20 12:16:47,764 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 68 selfloop transitions, 10 changer transitions 0/261 dead transitions. [2022-11-20 12:16:47,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 261 transitions, 820 flow [2022-11-20 12:16:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:16:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 982 transitions. [2022-11-20 12:16:47,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149377593360996 [2022-11-20 12:16:47,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 982 transitions. [2022-11-20 12:16:47,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 982 transitions. [2022-11-20 12:16:47,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:47,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 982 transitions. [2022-11-20 12:16:47,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:47,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:47,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:47,774 INFO L175 Difference]: Start difference. First operand has 223 places, 214 transitions, 498 flow. Second operand 5 states and 982 transitions. [2022-11-20 12:16:47,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 261 transitions, 820 flow [2022-11-20 12:16:47,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 261 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:16:47,787 INFO L231 Difference]: Finished difference. Result has 229 places, 223 transitions, 575 flow [2022-11-20 12:16:47,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=229, PETRI_TRANSITIONS=223} [2022-11-20 12:16:47,788 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 12 predicate places. [2022-11-20 12:16:47,789 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 223 transitions, 575 flow [2022-11-20 12:16:47,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:47,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:47,790 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] [2022-11-20 12:16:47,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:16:47,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:16:47,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:47,791 INFO L85 PathProgramCache]: Analyzing trace with hash -661886283, now seen corresponding path program 1 times [2022-11-20 12:16:47,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:47,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344618608] [2022-11-20 12:16:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:47,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:16:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:47,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344618608] [2022-11-20 12:16:47,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344618608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:47,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:47,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:16:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767896059] [2022-11-20 12:16:47,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:47,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:16:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:16:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:16:47,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-20 12:16:47,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 223 transitions, 575 flow. Second operand has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:47,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:47,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-20 12:16:47,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:48,753 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][128], [30#t_funENTRYtrue, Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), 240#true, Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 230#true]) [2022-11-20 12:16:48,753 INFO L383 tUnfolder$Statistics]: this new event has 198 ancestors and is cut-off event [2022-11-20 12:16:48,753 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-20 12:16:48,753 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-11-20 12:16:48,753 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-20 12:16:48,799 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][128], [Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), 240#true, Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), 29#L702-6true, Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 230#true]) [2022-11-20 12:16:48,799 INFO L383 tUnfolder$Statistics]: this new event has 208 ancestors and is cut-off event [2022-11-20 12:16:48,800 INFO L386 tUnfolder$Statistics]: existing Event has 161 ancestors and is cut-off event [2022-11-20 12:16:48,800 INFO L386 tUnfolder$Statistics]: existing Event has 208 ancestors and is cut-off event [2022-11-20 12:16:48,800 INFO L386 tUnfolder$Statistics]: existing Event has 114 ancestors and is cut-off event [2022-11-20 12:16:48,824 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][128], [Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), 240#true, Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 230#true]) [2022-11-20 12:16:48,824 INFO L383 tUnfolder$Statistics]: this new event has 233 ancestors and is cut-off event [2022-11-20 12:16:48,825 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-20 12:16:48,825 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-20 12:16:48,825 INFO L386 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-11-20 12:16:48,828 INFO L130 PetriNetUnfolder]: 164/2690 cut-off events. [2022-11-20 12:16:48,829 INFO L131 PetriNetUnfolder]: For 1166/2810 co-relation queries the response was YES. [2022-11-20 12:16:48,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 2690 events. 164/2690 cut-off events. For 1166/2810 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23036 event pairs, 64 based on Foata normal form. 108/2389 useless extension candidates. Maximal degree in co-relation 2644. Up to 205 conditions per place. [2022-11-20 12:16:48,858 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 15 selfloop transitions, 8 changer transitions 0/223 dead transitions. [2022-11-20 12:16:48,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 223 transitions, 619 flow [2022-11-20 12:16:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:16:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 976 transitions. [2022-11-20 12:16:48,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8099585062240664 [2022-11-20 12:16:48,861 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 976 transitions. [2022-11-20 12:16:48,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 976 transitions. [2022-11-20 12:16:48,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:48,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 976 transitions. [2022-11-20 12:16:48,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:48,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:48,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:48,870 INFO L175 Difference]: Start difference. First operand has 229 places, 223 transitions, 575 flow. Second operand 5 states and 976 transitions. [2022-11-20 12:16:48,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 223 transitions, 619 flow [2022-11-20 12:16:48,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 223 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:16:48,877 INFO L231 Difference]: Finished difference. Result has 232 places, 223 transitions, 590 flow [2022-11-20 12:16:48,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=232, PETRI_TRANSITIONS=223} [2022-11-20 12:16:48,879 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 15 predicate places. [2022-11-20 12:16:48,879 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 223 transitions, 590 flow [2022-11-20 12:16:48,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:48,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:48,880 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:16:48,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 12:16:48,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:16:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash 956362593, now seen corresponding path program 1 times [2022-11-20 12:16:48,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:48,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227399542] [2022-11-20 12:16:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:48,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:48,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:48,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227399542] [2022-11-20 12:16:48,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227399542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:16:48,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710304866] [2022-11-20 12:16:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:48,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:48,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:48,992 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:49,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:16:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:49,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:16:49,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:49,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:49,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710304866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:49,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:16:49,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 12:16:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689488482] [2022-11-20 12:16:49,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:49,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:16:49,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:16:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:16:49,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-20 12:16:49,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 223 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:49,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:49,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-20 12:16:49,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:49,871 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][127], [30#t_funENTRYtrue, 397#(<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)), Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 240#true, Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse]) [2022-11-20 12:16:49,871 INFO L383 tUnfolder$Statistics]: this new event has 198 ancestors and is cut-off event [2022-11-20 12:16:49,871 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-20 12:16:49,872 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-11-20 12:16:49,872 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-20 12:16:49,924 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][127], [397#(<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)), Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 240#true, Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), 29#L702-6true, Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse]) [2022-11-20 12:16:49,924 INFO L383 tUnfolder$Statistics]: this new event has 208 ancestors and is cut-off event [2022-11-20 12:16:49,924 INFO L386 tUnfolder$Statistics]: existing Event has 161 ancestors and is cut-off event [2022-11-20 12:16:49,924 INFO L386 tUnfolder$Statistics]: existing Event has 208 ancestors and is cut-off event [2022-11-20 12:16:49,924 INFO L386 tUnfolder$Statistics]: existing Event has 114 ancestors and is cut-off event [2022-11-20 12:16:49,952 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][127], [397#(<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)), Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 240#true, Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse]) [2022-11-20 12:16:49,952 INFO L383 tUnfolder$Statistics]: this new event has 233 ancestors and is cut-off event [2022-11-20 12:16:49,952 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-20 12:16:49,953 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-20 12:16:49,954 INFO L386 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-11-20 12:16:49,961 INFO L130 PetriNetUnfolder]: 164/2687 cut-off events. [2022-11-20 12:16:49,961 INFO L131 PetriNetUnfolder]: For 1134/2626 co-relation queries the response was YES. [2022-11-20 12:16:49,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 2687 events. 164/2687 cut-off events. For 1134/2626 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22965 event pairs, 64 based on Foata normal form. 38/2316 useless extension candidates. Maximal degree in co-relation 2643. Up to 218 conditions per place. [2022-11-20 12:16:50,005 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 17 selfloop transitions, 5 changer transitions 0/222 dead transitions. [2022-11-20 12:16:50,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 222 transitions, 630 flow [2022-11-20 12:16:50,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:16:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:16:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 783 transitions. [2022-11-20 12:16:50,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8122406639004149 [2022-11-20 12:16:50,008 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 783 transitions. [2022-11-20 12:16:50,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 783 transitions. [2022-11-20 12:16:50,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:50,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 783 transitions. [2022-11-20 12:16:50,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:50,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:50,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:50,015 INFO L175 Difference]: Start difference. First operand has 232 places, 223 transitions, 590 flow. Second operand 4 states and 783 transitions. [2022-11-20 12:16:50,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 222 transitions, 630 flow [2022-11-20 12:16:50,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 222 transitions, 618 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:16:50,023 INFO L231 Difference]: Finished difference. Result has 231 places, 222 transitions, 584 flow [2022-11-20 12:16:50,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=584, PETRI_PLACES=231, PETRI_TRANSITIONS=222} [2022-11-20 12:16:50,025 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 14 predicate places. [2022-11-20 12:16:50,025 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 222 transitions, 584 flow [2022-11-20 12:16:50,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:50,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:50,026 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] [2022-11-20 12:16:50,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec83e9c-66b0-4c41-8f63-b5588539277a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:16:50,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:16:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash -507909455, now seen corresponding path program 1 times [2022-11-20 12:16:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:50,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297948379] [2022-11-20 12:16:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:50,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:50,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297948379] [2022-11-20 12:16:50,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297948379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:50,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:50,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:16:50,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559191250] [2022-11-20 12:16:50,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:50,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:16:50,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:50,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:16:50,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:16:50,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 241 [2022-11-20 12:16:50,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 222 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:50,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:50,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 241 [2022-11-20 12:16:50,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand