./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:35:05,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:35:05,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:35:05,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:35:05,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:35:05,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:35:05,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:35:05,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:35:05,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:35:05,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:35:05,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:35:05,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:35:05,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:35:05,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:35:05,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:35:05,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:35:05,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:35:05,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:35:05,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:35:05,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:35:05,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:35:05,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:35:05,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:35:05,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:35:05,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:35:05,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:35:05,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:35:05,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:35:05,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:35:05,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:35:05,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:35:05,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:35:05,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:35:05,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:35:05,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:35:05,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:35:05,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:35:05,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:35:05,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:35:05,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:35:05,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:35:05,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:35:05,799 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:35:05,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:35:05,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:35:05,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:35:05,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:35:05,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:35:05,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:35:05,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:35:05,804 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:35:05,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:35:05,805 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:35:05,806 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:35:05,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:35:05,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:35:05,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:35:05,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:35:05,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:35:05,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:35:05,808 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:35:05,808 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:35:05,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:35:05,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:35:05,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:35:05,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:35:05,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:35:05,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:35:05,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:35:05,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:35:05,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:35:05,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:35:05,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:35:05,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:35:05,812 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:35:05,812 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:35:05,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:35:05,812 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_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2022-11-18 20:35:06,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:35:06,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:35:06,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:35:06,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:35:06,171 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:35:06,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-18 20:35:06,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/data/f5092dda3/9c3bf08cfdfd402b80f6e9bf30104e4a/FLAG26e94e28c [2022-11-18 20:35:06,961 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:35:06,961 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-18 20:35:06,974 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/data/f5092dda3/9c3bf08cfdfd402b80f6e9bf30104e4a/FLAG26e94e28c [2022-11-18 20:35:07,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/data/f5092dda3/9c3bf08cfdfd402b80f6e9bf30104e4a [2022-11-18 20:35:07,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:35:07,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:35:07,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:35:07,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:35:07,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:35:07,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:07,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de1ca1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07, skipping insertion in model container [2022-11-18 20:35:07,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:07,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:35:07,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:35:07,763 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-18 20:35:07,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:35:07,795 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:35:07,834 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-18 20:35:07,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:35:07,902 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:35:07,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07 WrapperNode [2022-11-18 20:35:07,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:35:07,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:35:07,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:35:07,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:35:07,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:07,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:07,993 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2022-11-18 20:35:07,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:35:07,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:35:07,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:35:07,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:35:08,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:08,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:08,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:08,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:08,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:08,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:08,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:08,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:08,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:35:08,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:35:08,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:35:08,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:35:08,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2022-11-18 20:35:08,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:35:08,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:08,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:35:08,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:35:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:35:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:35:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:35:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:35:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:35:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:35:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:35:08,176 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:35:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:35:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:35:08,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:35:08,179 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:35:08,360 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:35:08,362 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:35:08,716 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:35:08,724 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:35:08,725 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 20:35:08,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:08 BoogieIcfgContainer [2022-11-18 20:35:08,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:35:08,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:35:08,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:35:08,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:35:08,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:35:07" (1/3) ... [2022-11-18 20:35:08,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eeba1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:08, skipping insertion in model container [2022-11-18 20:35:08,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (2/3) ... [2022-11-18 20:35:08,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eeba1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:08, skipping insertion in model container [2022-11-18 20:35:08,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:08" (3/3) ... [2022-11-18 20:35:08,745 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2022-11-18 20:35:08,754 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:35:08,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:35:08,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 20:35:08,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:35:08,863 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:35:08,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 145 transitions, 298 flow [2022-11-18 20:35:08,988 INFO L130 PetriNetUnfolder]: 23/193 cut-off events. [2022-11-18 20:35:08,989 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:35:08,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 193 events. 23/193 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 462 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2022-11-18 20:35:08,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 145 transitions, 298 flow [2022-11-18 20:35:09,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 142 transitions, 292 flow [2022-11-18 20:35:09,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:35:09,019 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;@76bf80b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:35:09,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-18 20:35:09,035 INFO L130 PetriNetUnfolder]: 2/53 cut-off events. [2022-11-18 20:35:09,035 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:35:09,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:09,036 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] [2022-11-18 20:35:09,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 20:35:09,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:09,043 INFO L85 PathProgramCache]: Analyzing trace with hash -5113420, now seen corresponding path program 1 times [2022-11-18 20:35:09,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:09,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440341223] [2022-11-18 20:35:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:09,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:09,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440341223] [2022-11-18 20:35:09,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440341223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:09,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:09,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:35:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911962686] [2022-11-18 20:35:09,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:09,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:35:09,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:35:09,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:35:09,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 145 [2022-11-18 20:35:09,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 142 transitions, 292 flow. Second operand has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:09,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 145 [2022-11-18 20:35:09,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:09,384 INFO L130 PetriNetUnfolder]: 6/172 cut-off events. [2022-11-18 20:35:09,385 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 20:35:09,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 6/172 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 371 event pairs, 0 based on Foata normal form. 16/165 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2022-11-18 20:35:09,387 INFO L137 encePairwiseOnDemand]: 134/145 looper letters, 2 selfloop transitions, 0 changer transitions 0/130 dead transitions. [2022-11-18 20:35:09,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 130 transitions, 272 flow [2022-11-18 20:35:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:35:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:35:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 275 transitions. [2022-11-18 20:35:09,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9482758620689655 [2022-11-18 20:35:09,403 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 275 transitions. [2022-11-18 20:35:09,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 275 transitions. [2022-11-18 20:35:09,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:09,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 275 transitions. [2022-11-18 20:35:09,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,417 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,419 INFO L175 Difference]: Start difference. First operand has 131 places, 142 transitions, 292 flow. Second operand 2 states and 275 transitions. [2022-11-18 20:35:09,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 130 transitions, 272 flow [2022-11-18 20:35:09,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 130 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:09,428 INFO L231 Difference]: Finished difference. Result has 131 places, 130 transitions, 268 flow [2022-11-18 20:35:09,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=268, PETRI_PLACES=131, PETRI_TRANSITIONS=130} [2022-11-18 20:35:09,434 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 0 predicate places. [2022-11-18 20:35:09,434 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 130 transitions, 268 flow [2022-11-18 20:35:09,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:09,435 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] [2022-11-18 20:35:09,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:35:09,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 20:35:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash -4189899, now seen corresponding path program 1 times [2022-11-18 20:35:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:09,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169595982] [2022-11-18 20:35:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:09,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:09,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169595982] [2022-11-18 20:35:09,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169595982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:09,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:09,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820453566] [2022-11-18 20:35:09,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:09,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:09,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:09,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:35:09,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 145 [2022-11-18 20:35:09,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 130 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:09,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 145 [2022-11-18 20:35:09,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:09,682 INFO L130 PetriNetUnfolder]: 3/134 cut-off events. [2022-11-18 20:35:09,682 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-18 20:35:09,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 134 events. 3/134 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 180 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 149. Up to 7 conditions per place. [2022-11-18 20:35:09,684 INFO L137 encePairwiseOnDemand]: 142/145 looper letters, 9 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2022-11-18 20:35:09,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 132 transitions, 294 flow [2022-11-18 20:35:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:35:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-11-18 20:35:09,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8827586206896552 [2022-11-18 20:35:09,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-11-18 20:35:09,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-11-18 20:35:09,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:09,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-11-18 20:35:09,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,700 INFO L175 Difference]: Start difference. First operand has 131 places, 130 transitions, 268 flow. Second operand 3 states and 384 transitions. [2022-11-18 20:35:09,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 132 transitions, 294 flow [2022-11-18 20:35:09,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 132 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:09,704 INFO L231 Difference]: Finished difference. Result has 134 places, 130 transitions, 276 flow [2022-11-18 20:35:09,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=134, PETRI_TRANSITIONS=130} [2022-11-18 20:35:09,708 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 3 predicate places. [2022-11-18 20:35:09,708 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 130 transitions, 276 flow [2022-11-18 20:35:09,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:09,710 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] [2022-11-18 20:35:09,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:35:09,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 20:35:09,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2138256120, now seen corresponding path program 1 times [2022-11-18 20:35:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:09,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9592807] [2022-11-18 20:35:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:09,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:09,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9592807] [2022-11-18 20:35:09,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9592807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:09,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:09,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:09,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476883610] [2022-11-18 20:35:09,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:09,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:09,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:09,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:09,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 145 [2022-11-18 20:35:09,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 130 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:09,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 145 [2022-11-18 20:35:09,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:09,980 INFO L130 PetriNetUnfolder]: 3/132 cut-off events. [2022-11-18 20:35:09,980 INFO L131 PetriNetUnfolder]: For 6/15 co-relation queries the response was YES. [2022-11-18 20:35:09,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 132 events. 3/132 cut-off events. For 6/15 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 173 event pairs, 0 based on Foata normal form. 3/123 useless extension candidates. Maximal degree in co-relation 154. Up to 7 conditions per place. [2022-11-18 20:35:09,981 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 10 selfloop transitions, 4 changer transitions 0/130 dead transitions. [2022-11-18 20:35:09,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 304 flow [2022-11-18 20:35:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:35:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 611 transitions. [2022-11-18 20:35:09,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8427586206896551 [2022-11-18 20:35:09,986 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 611 transitions. [2022-11-18 20:35:09,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 611 transitions. [2022-11-18 20:35:09,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:09,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 611 transitions. [2022-11-18 20:35:09,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,002 INFO L175 Difference]: Start difference. First operand has 134 places, 130 transitions, 276 flow. Second operand 5 states and 611 transitions. [2022-11-18 20:35:10,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 304 flow [2022-11-18 20:35:10,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:35:10,008 INFO L231 Difference]: Finished difference. Result has 134 places, 128 transitions, 276 flow [2022-11-18 20:35:10,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=134, PETRI_TRANSITIONS=128} [2022-11-18 20:35:10,012 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 3 predicate places. [2022-11-18 20:35:10,013 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 276 flow [2022-11-18 20:35:10,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:10,014 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:10,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:35:10,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 20:35:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1484900822, now seen corresponding path program 1 times [2022-11-18 20:35:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:10,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367368695] [2022-11-18 20:35:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:10,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:10,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367368695] [2022-11-18 20:35:10,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367368695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:10,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:10,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:10,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089634612] [2022-11-18 20:35:10,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:10,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:10,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 145 [2022-11-18 20:35:10,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 128 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:10,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 145 [2022-11-18 20:35:10,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:10,222 INFO L130 PetriNetUnfolder]: 13/202 cut-off events. [2022-11-18 20:35:10,222 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-18 20:35:10,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 202 events. 13/202 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 519 event pairs, 2 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 239. Up to 12 conditions per place. [2022-11-18 20:35:10,224 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 10 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2022-11-18 20:35:10,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 129 transitions, 306 flow [2022-11-18 20:35:10,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:35:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 616 transitions. [2022-11-18 20:35:10,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8496551724137931 [2022-11-18 20:35:10,230 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 616 transitions. [2022-11-18 20:35:10,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 616 transitions. [2022-11-18 20:35:10,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:10,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 616 transitions. [2022-11-18 20:35:10,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,241 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,242 INFO L175 Difference]: Start difference. First operand has 134 places, 128 transitions, 276 flow. Second operand 5 states and 616 transitions. [2022-11-18 20:35:10,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 129 transitions, 306 flow [2022-11-18 20:35:10,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 129 transitions, 298 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:35:10,246 INFO L231 Difference]: Finished difference. Result has 132 places, 126 transitions, 272 flow [2022-11-18 20:35:10,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=132, PETRI_TRANSITIONS=126} [2022-11-18 20:35:10,249 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 1 predicate places. [2022-11-18 20:35:10,250 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions, 272 flow [2022-11-18 20:35:10,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:10,256 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] [2022-11-18 20:35:10,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:35:10,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 20:35:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:10,258 INFO L85 PathProgramCache]: Analyzing trace with hash -217857001, now seen corresponding path program 1 times [2022-11-18 20:35:10,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:10,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939120267] [2022-11-18 20:35:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:10,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:35:10,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:35:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:35:10,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:35:10,341 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:35:10,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-18 20:35:10,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-11-18 20:35:10,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-11-18 20:35:10,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-11-18 20:35:10,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-11-18 20:35:10,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-11-18 20:35:10,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2022-11-18 20:35:10,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2022-11-18 20:35:10,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2022-11-18 20:35:10,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-11-18 20:35:10,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-11-18 20:35:10,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-11-18 20:35:10,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-11-18 20:35:10,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-11-18 20:35:10,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-11-18 20:35:10,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:35:10,351 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 20:35:10,353 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:35:10,353 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:35:10,392 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:35:10,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 183 transitions, 384 flow [2022-11-18 20:35:10,497 INFO L130 PetriNetUnfolder]: 40/316 cut-off events. [2022-11-18 20:35:10,497 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:35:10,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 316 events. 40/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 952 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2022-11-18 20:35:10,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 183 transitions, 384 flow [2022-11-18 20:35:10,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 183 transitions, 384 flow [2022-11-18 20:35:10,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:35:10,525 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;@76bf80b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:35:10,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-18 20:35:10,536 INFO L130 PetriNetUnfolder]: 2/53 cut-off events. [2022-11-18 20:35:10,537 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:35:10,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:10,539 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] [2022-11-18 20:35:10,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1296781356, now seen corresponding path program 1 times [2022-11-18 20:35:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:10,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770498198] [2022-11-18 20:35:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:10,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:10,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:10,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770498198] [2022-11-18 20:35:10,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770498198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:10,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:10,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:35:10,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72378840] [2022-11-18 20:35:10,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:10,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:35:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:10,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:35:10,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:35:10,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 183 [2022-11-18 20:35:10,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 183 transitions, 384 flow. Second operand has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:10,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 183 [2022-11-18 20:35:10,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:10,675 INFO L130 PetriNetUnfolder]: 12/285 cut-off events. [2022-11-18 20:35:10,676 INFO L131 PetriNetUnfolder]: For 18/22 co-relation queries the response was YES. [2022-11-18 20:35:10,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 285 events. 12/285 cut-off events. For 18/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 831 event pairs, 0 based on Foata normal form. 42/284 useless extension candidates. Maximal degree in co-relation 179. Up to 7 conditions per place. [2022-11-18 20:35:10,679 INFO L137 encePairwiseOnDemand]: 166/183 looper letters, 4 selfloop transitions, 0 changer transitions 0/165 dead transitions. [2022-11-18 20:35:10,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 165 transitions, 356 flow [2022-11-18 20:35:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:35:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:35:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 343 transitions. [2022-11-18 20:35:10,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9371584699453552 [2022-11-18 20:35:10,683 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 343 transitions. [2022-11-18 20:35:10,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 343 transitions. [2022-11-18 20:35:10,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:10,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 343 transitions. [2022-11-18 20:35:10,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,687 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,687 INFO L175 Difference]: Start difference. First operand has 166 places, 183 transitions, 384 flow. Second operand 2 states and 343 transitions. [2022-11-18 20:35:10,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 165 transitions, 356 flow [2022-11-18 20:35:10,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:10,695 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 348 flow [2022-11-18 20:35:10,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=348, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2022-11-18 20:35:10,697 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 0 predicate places. [2022-11-18 20:35:10,697 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 348 flow [2022-11-18 20:35:10,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:10,698 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] [2022-11-18 20:35:10,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:35:10,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:10,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1295857835, now seen corresponding path program 1 times [2022-11-18 20:35:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:10,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170331429] [2022-11-18 20:35:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:10,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:10,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170331429] [2022-11-18 20:35:10,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170331429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:10,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:10,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:10,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218604173] [2022-11-18 20:35:10,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:10,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:10,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:10,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:10,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:35:10,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 183 [2022-11-18 20:35:10,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:10,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 183 [2022-11-18 20:35:10,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:10,892 INFO L130 PetriNetUnfolder]: 8/256 cut-off events. [2022-11-18 20:35:10,893 INFO L131 PetriNetUnfolder]: For 14/33 co-relation queries the response was YES. [2022-11-18 20:35:10,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 256 events. 8/256 cut-off events. For 14/33 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 681 event pairs, 0 based on Foata normal form. 1/221 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2022-11-18 20:35:10,896 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 13 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2022-11-18 20:35:10,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 169 transitions, 386 flow [2022-11-18 20:35:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:35:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2022-11-18 20:35:10,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8706739526411658 [2022-11-18 20:35:10,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2022-11-18 20:35:10,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2022-11-18 20:35:10,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:10,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2022-11-18 20:35:10,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,905 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 348 flow. Second operand 3 states and 478 transitions. [2022-11-18 20:35:10,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 169 transitions, 386 flow [2022-11-18 20:35:10,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 169 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:10,909 INFO L231 Difference]: Finished difference. Result has 169 places, 166 transitions, 360 flow [2022-11-18 20:35:10,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=169, PETRI_TRANSITIONS=166} [2022-11-18 20:35:10,911 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 3 predicate places. [2022-11-18 20:35:10,911 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 166 transitions, 360 flow [2022-11-18 20:35:10,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:10,912 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] [2022-11-18 20:35:10,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:35:10,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash -346507508, now seen corresponding path program 1 times [2022-11-18 20:35:10,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:10,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768820181] [2022-11-18 20:35:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:10,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:11,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:11,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768820181] [2022-11-18 20:35:11,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768820181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:11,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:11,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800619620] [2022-11-18 20:35:11,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:11,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:11,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:11,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 183 [2022-11-18 20:35:11,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 166 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:11,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 183 [2022-11-18 20:35:11,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:11,160 INFO L130 PetriNetUnfolder]: 8/254 cut-off events. [2022-11-18 20:35:11,160 INFO L131 PetriNetUnfolder]: For 17/49 co-relation queries the response was YES. [2022-11-18 20:35:11,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 254 events. 8/254 cut-off events. For 17/49 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 672 event pairs, 0 based on Foata normal form. 3/225 useless extension candidates. Maximal degree in co-relation 299. Up to 21 conditions per place. [2022-11-18 20:35:11,163 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 19 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2022-11-18 20:35:11,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 172 transitions, 418 flow [2022-11-18 20:35:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:35:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 770 transitions. [2022-11-18 20:35:11,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8415300546448088 [2022-11-18 20:35:11,167 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 770 transitions. [2022-11-18 20:35:11,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 770 transitions. [2022-11-18 20:35:11,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:11,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 770 transitions. [2022-11-18 20:35:11,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,174 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,175 INFO L175 Difference]: Start difference. First operand has 169 places, 166 transitions, 360 flow. Second operand 5 states and 770 transitions. [2022-11-18 20:35:11,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 172 transitions, 418 flow [2022-11-18 20:35:11,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 172 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:35:11,180 INFO L231 Difference]: Finished difference. Result has 175 places, 168 transitions, 384 flow [2022-11-18 20:35:11,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=175, PETRI_TRANSITIONS=168} [2022-11-18 20:35:11,182 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 9 predicate places. [2022-11-18 20:35:11,183 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 168 transitions, 384 flow [2022-11-18 20:35:11,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:11,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:11,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:35:11,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1205274522, now seen corresponding path program 1 times [2022-11-18 20:35:11,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:11,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530922466] [2022-11-18 20:35:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:11,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:11,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530922466] [2022-11-18 20:35:11,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530922466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:11,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:11,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:11,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554232893] [2022-11-18 20:35:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:11,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:11,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:11,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 183 [2022-11-18 20:35:11,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 168 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:11,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 183 [2022-11-18 20:35:11,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:11,615 INFO L130 PetriNetUnfolder]: 176/1047 cut-off events. [2022-11-18 20:35:11,615 INFO L131 PetriNetUnfolder]: For 112/131 co-relation queries the response was YES. [2022-11-18 20:35:11,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 1047 events. 176/1047 cut-off events. For 112/131 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7535 event pairs, 43 based on Foata normal form. 0/910 useless extension candidates. Maximal degree in co-relation 1436. Up to 207 conditions per place. [2022-11-18 20:35:11,629 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 36 selfloop transitions, 6 changer transitions 0/191 dead transitions. [2022-11-18 20:35:11,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 191 transitions, 532 flow [2022-11-18 20:35:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:35:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 776 transitions. [2022-11-18 20:35:11,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.848087431693989 [2022-11-18 20:35:11,632 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 776 transitions. [2022-11-18 20:35:11,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 776 transitions. [2022-11-18 20:35:11,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:11,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 776 transitions. [2022-11-18 20:35:11,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,638 INFO L175 Difference]: Start difference. First operand has 175 places, 168 transitions, 384 flow. Second operand 5 states and 776 transitions. [2022-11-18 20:35:11,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 191 transitions, 532 flow [2022-11-18 20:35:11,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 191 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:35:11,645 INFO L231 Difference]: Finished difference. Result has 180 places, 173 transitions, 429 flow [2022-11-18 20:35:11,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=180, PETRI_TRANSITIONS=173} [2022-11-18 20:35:11,648 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 14 predicate places. [2022-11-18 20:35:11,649 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 173 transitions, 429 flow [2022-11-18 20:35:11,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:11,650 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] [2022-11-18 20:35:11,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:35:11,650 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1772848539, now seen corresponding path program 1 times [2022-11-18 20:35:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:11,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56107578] [2022-11-18 20:35:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:11,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:11,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:11,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56107578] [2022-11-18 20:35:11,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56107578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:11,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034386658] [2022-11-18 20:35:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:11,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:11,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:11,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:11,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:35:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:11,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:35:11,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:11,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:11,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034386658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:11,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:11,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:35:11,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176140570] [2022-11-18 20:35:11,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:11,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:11,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:11,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:11,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 183 [2022-11-18 20:35:11,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 173 transitions, 429 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:11,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 183 [2022-11-18 20:35:11,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:12,119 INFO L130 PetriNetUnfolder]: 19/555 cut-off events. [2022-11-18 20:35:12,119 INFO L131 PetriNetUnfolder]: For 75/206 co-relation queries the response was YES. [2022-11-18 20:35:12,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 555 events. 19/555 cut-off events. For 75/206 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2608 event pairs, 0 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 675. Up to 32 conditions per place. [2022-11-18 20:35:12,127 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 21 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2022-11-18 20:35:12,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 182 transitions, 503 flow [2022-11-18 20:35:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:12,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:35:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2022-11-18 20:35:12,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8615664845173042 [2022-11-18 20:35:12,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2022-11-18 20:35:12,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2022-11-18 20:35:12,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:12,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2022-11-18 20:35:12,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,133 INFO L175 Difference]: Start difference. First operand has 180 places, 173 transitions, 429 flow. Second operand 3 states and 473 transitions. [2022-11-18 20:35:12,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 182 transitions, 503 flow [2022-11-18 20:35:12,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 182 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:35:12,138 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 456 flow [2022-11-18 20:35:12,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2022-11-18 20:35:12,139 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 17 predicate places. [2022-11-18 20:35:12,139 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 456 flow [2022-11-18 20:35:12,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:12,140 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] [2022-11-18 20:35:12,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:35:12,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:35:12,346 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:12,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:12,347 INFO L85 PathProgramCache]: Analyzing trace with hash 876270636, now seen corresponding path program 1 times [2022-11-18 20:35:12,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:12,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245714387] [2022-11-18 20:35:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:12,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:12,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:12,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245714387] [2022-11-18 20:35:12,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245714387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:12,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810697150] [2022-11-18 20:35:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:12,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:12,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:12,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:12,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:35:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:12,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:35:12,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:12,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:12,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810697150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:12,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:12,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:35:12,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573578430] [2022-11-18 20:35:12,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:12,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:12,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:12,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:12,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:12,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 183 [2022-11-18 20:35:12,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:12,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 183 [2022-11-18 20:35:12,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:12,772 INFO L130 PetriNetUnfolder]: 19/691 cut-off events. [2022-11-18 20:35:12,772 INFO L131 PetriNetUnfolder]: For 126/348 co-relation queries the response was YES. [2022-11-18 20:35:12,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 691 events. 19/691 cut-off events. For 126/348 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3973 event pairs, 0 based on Foata normal form. 4/616 useless extension candidates. Maximal degree in co-relation 851. Up to 41 conditions per place. [2022-11-18 20:35:12,781 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 20 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2022-11-18 20:35:12,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 181 transitions, 518 flow [2022-11-18 20:35:12,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:35:12,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2022-11-18 20:35:12,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8597449908925319 [2022-11-18 20:35:12,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2022-11-18 20:35:12,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2022-11-18 20:35:12,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:12,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2022-11-18 20:35:12,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,787 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 456 flow. Second operand 3 states and 472 transitions. [2022-11-18 20:35:12,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 181 transitions, 518 flow [2022-11-18 20:35:12,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 181 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:35:12,791 INFO L231 Difference]: Finished difference. Result has 185 places, 175 transitions, 462 flow [2022-11-18 20:35:12,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=185, PETRI_TRANSITIONS=175} [2022-11-18 20:35:12,792 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 19 predicate places. [2022-11-18 20:35:12,792 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 175 transitions, 462 flow [2022-11-18 20:35:12,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:12,793 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:12,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:12,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:35:12,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:13,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:13,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1393117781, now seen corresponding path program 1 times [2022-11-18 20:35:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:13,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055535700] [2022-11-18 20:35:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:13,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:13,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:13,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055535700] [2022-11-18 20:35:13,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055535700] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:13,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466646102] [2022-11-18 20:35:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:13,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:13,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:13,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:13,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:35:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:13,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:35:13,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:13,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:13,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466646102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:13,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:13,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:35:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864592876] [2022-11-18 20:35:13,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:13,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:35:13,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:35:13,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:35:13,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 183 [2022-11-18 20:35:13,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 175 transitions, 462 flow. Second operand has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:13,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:13,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 183 [2022-11-18 20:35:13,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:13,467 INFO L130 PetriNetUnfolder]: 1/192 cut-off events. [2022-11-18 20:35:13,467 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-11-18 20:35:13,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 192 events. 1/192 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 389 event pairs, 0 based on Foata normal form. 3/183 useless extension candidates. Maximal degree in co-relation 250. Up to 8 conditions per place. [2022-11-18 20:35:13,469 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 13 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2022-11-18 20:35:13,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 130 transitions, 372 flow [2022-11-18 20:35:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:35:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:35:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1514 transitions. [2022-11-18 20:35:13,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273224043715847 [2022-11-18 20:35:13,474 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1514 transitions. [2022-11-18 20:35:13,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1514 transitions. [2022-11-18 20:35:13,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:13,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1514 transitions. [2022-11-18 20:35:13,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.4) internal successors, (1514), 10 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:13,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:13,484 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:13,485 INFO L175 Difference]: Start difference. First operand has 185 places, 175 transitions, 462 flow. Second operand 10 states and 1514 transitions. [2022-11-18 20:35:13,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 130 transitions, 372 flow [2022-11-18 20:35:13,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 130 transitions, 370 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:13,495 INFO L231 Difference]: Finished difference. Result has 146 places, 124 transitions, 332 flow [2022-11-18 20:35:13,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=332, PETRI_PLACES=146, PETRI_TRANSITIONS=124} [2022-11-18 20:35:13,497 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -20 predicate places. [2022-11-18 20:35:13,497 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 124 transitions, 332 flow [2022-11-18 20:35:13,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:13,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:13,498 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, 1, 1, 1, 1, 1] [2022-11-18 20:35:13,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:13,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:13,705 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:13,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1085883432, now seen corresponding path program 1 times [2022-11-18 20:35:13,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:13,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597858794] [2022-11-18 20:35:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:13,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:13,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597858794] [2022-11-18 20:35:13,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597858794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:13,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578433486] [2022-11-18 20:35:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:13,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:13,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:13,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:13,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:35:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:13,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:35:13,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:13,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:13,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578433486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:13,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:13,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:35:13,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237444185] [2022-11-18 20:35:13,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:13,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:35:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:35:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:35:13,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 183 [2022-11-18 20:35:13,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 124 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:13,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:13,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 183 [2022-11-18 20:35:13,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:14,093 INFO L130 PetriNetUnfolder]: 1/191 cut-off events. [2022-11-18 20:35:14,093 INFO L131 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2022-11-18 20:35:14,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 191 events. 1/191 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 383 event pairs, 0 based on Foata normal form. 1/180 useless extension candidates. Maximal degree in co-relation 253. Up to 8 conditions per place. [2022-11-18 20:35:14,095 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 12 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2022-11-18 20:35:14,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 127 transitions, 370 flow [2022-11-18 20:35:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:35:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:35:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1062 transitions. [2022-11-18 20:35:14,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290398126463701 [2022-11-18 20:35:14,099 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1062 transitions. [2022-11-18 20:35:14,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1062 transitions. [2022-11-18 20:35:14,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:14,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1062 transitions. [2022-11-18 20:35:14,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.71428571428572) internal successors, (1062), 7 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,106 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,106 INFO L175 Difference]: Start difference. First operand has 146 places, 124 transitions, 332 flow. Second operand 7 states and 1062 transitions. [2022-11-18 20:35:14,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 127 transitions, 370 flow [2022-11-18 20:35:14,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 127 transitions, 345 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-18 20:35:14,110 INFO L231 Difference]: Finished difference. Result has 141 places, 123 transitions, 313 flow [2022-11-18 20:35:14,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=141, PETRI_TRANSITIONS=123} [2022-11-18 20:35:14,111 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -25 predicate places. [2022-11-18 20:35:14,112 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 123 transitions, 313 flow [2022-11-18 20:35:14,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:14,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:14,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:14,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:14,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash -947140257, now seen corresponding path program 1 times [2022-11-18 20:35:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:14,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145783652] [2022-11-18 20:35:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:14,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:14,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145783652] [2022-11-18 20:35:14,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145783652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:14,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:14,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:35:14,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327958517] [2022-11-18 20:35:14,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:35:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:35:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:14,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 183 [2022-11-18 20:35:14,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 123 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:14,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 183 [2022-11-18 20:35:14,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:14,674 INFO L130 PetriNetUnfolder]: 93/604 cut-off events. [2022-11-18 20:35:14,675 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-11-18 20:35:14,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 604 events. 93/604 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3564 event pairs, 26 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 956. Up to 79 conditions per place. [2022-11-18 20:35:14,681 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 44 selfloop transitions, 19 changer transitions 0/160 dead transitions. [2022-11-18 20:35:14,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 160 transitions, 545 flow [2022-11-18 20:35:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:35:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:35:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1334 transitions. [2022-11-18 20:35:14,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8099574984820886 [2022-11-18 20:35:14,685 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1334 transitions. [2022-11-18 20:35:14,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1334 transitions. [2022-11-18 20:35:14,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:14,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1334 transitions. [2022-11-18 20:35:14,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.22222222222223) internal successors, (1334), 9 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,694 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,694 INFO L175 Difference]: Start difference. First operand has 141 places, 123 transitions, 313 flow. Second operand 9 states and 1334 transitions. [2022-11-18 20:35:14,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 160 transitions, 545 flow [2022-11-18 20:35:14,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 160 transitions, 533 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:35:14,698 INFO L231 Difference]: Finished difference. Result has 149 places, 135 transitions, 427 flow [2022-11-18 20:35:14,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=427, PETRI_PLACES=149, PETRI_TRANSITIONS=135} [2022-11-18 20:35:14,700 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -17 predicate places. [2022-11-18 20:35:14,700 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 135 transitions, 427 flow [2022-11-18 20:35:14,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:14,701 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:14,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:35:14,702 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash 703423698, now seen corresponding path program 1 times [2022-11-18 20:35:14,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:14,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417163859] [2022-11-18 20:35:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:14,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:14,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417163859] [2022-11-18 20:35:14,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417163859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:14,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:14,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:35:14,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255719908] [2022-11-18 20:35:14,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:14,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:35:14,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:14,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:35:14,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:14,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 183 [2022-11-18 20:35:14,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 135 transitions, 427 flow. Second operand has 6 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:14,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 183 [2022-11-18 20:35:14,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:15,039 INFO L130 PetriNetUnfolder]: 85/548 cut-off events. [2022-11-18 20:35:15,040 INFO L131 PetriNetUnfolder]: For 424/438 co-relation queries the response was YES. [2022-11-18 20:35:15,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 548 events. 85/548 cut-off events. For 424/438 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3093 event pairs, 23 based on Foata normal form. 19/535 useless extension candidates. Maximal degree in co-relation 1067. Up to 88 conditions per place. [2022-11-18 20:35:15,046 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 50 selfloop transitions, 19 changer transitions 0/166 dead transitions. [2022-11-18 20:35:15,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 166 transitions, 693 flow [2022-11-18 20:35:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:35:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:35:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1337 transitions. [2022-11-18 20:35:15,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.811778992106861 [2022-11-18 20:35:15,051 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1337 transitions. [2022-11-18 20:35:15,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1337 transitions. [2022-11-18 20:35:15,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:15,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1337 transitions. [2022-11-18 20:35:15,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.55555555555554) internal successors, (1337), 9 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,059 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,060 INFO L175 Difference]: Start difference. First operand has 149 places, 135 transitions, 427 flow. Second operand 9 states and 1337 transitions. [2022-11-18 20:35:15,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 166 transitions, 693 flow [2022-11-18 20:35:15,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 166 transitions, 652 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-18 20:35:15,066 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 474 flow [2022-11-18 20:35:15,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=474, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-11-18 20:35:15,068 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -11 predicate places. [2022-11-18 20:35:15,068 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 474 flow [2022-11-18 20:35:15,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:15,069 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] [2022-11-18 20:35:15,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:35:15,069 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:15,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:15,070 INFO L85 PathProgramCache]: Analyzing trace with hash 135687083, now seen corresponding path program 1 times [2022-11-18 20:35:15,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:15,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751564601] [2022-11-18 20:35:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:35:15,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:15,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751564601] [2022-11-18 20:35:15,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751564601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:15,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:15,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450605287] [2022-11-18 20:35:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:15,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:15,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 183 [2022-11-18 20:35:15,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:15,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 183 [2022-11-18 20:35:15,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:15,324 INFO L130 PetriNetUnfolder]: 69/549 cut-off events. [2022-11-18 20:35:15,325 INFO L131 PetriNetUnfolder]: For 507/526 co-relation queries the response was YES. [2022-11-18 20:35:15,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 549 events. 69/549 cut-off events. For 507/526 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3163 event pairs, 21 based on Foata normal form. 10/529 useless extension candidates. Maximal degree in co-relation 1110. Up to 120 conditions per place. [2022-11-18 20:35:15,331 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 48 selfloop transitions, 7 changer transitions 0/161 dead transitions. [2022-11-18 20:35:15,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 161 transitions, 711 flow [2022-11-18 20:35:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:35:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 767 transitions. [2022-11-18 20:35:15,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8382513661202186 [2022-11-18 20:35:15,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 767 transitions. [2022-11-18 20:35:15,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 767 transitions. [2022-11-18 20:35:15,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:15,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 767 transitions. [2022-11-18 20:35:15,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,341 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 474 flow. Second operand 5 states and 767 transitions. [2022-11-18 20:35:15,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 161 transitions, 711 flow [2022-11-18 20:35:15,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 161 transitions, 683 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 20:35:15,348 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 504 flow [2022-11-18 20:35:15,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2022-11-18 20:35:15,349 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -8 predicate places. [2022-11-18 20:35:15,349 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 504 flow [2022-11-18 20:35:15,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:15,350 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] [2022-11-18 20:35:15,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:35:15,351 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:35:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash 484644688, now seen corresponding path program 1 times [2022-11-18 20:35:15,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:15,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827288847] [2022-11-18 20:35:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:15,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:35:15,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:35:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:35:15,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:35:15,402 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:35:15,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-18 20:35:15,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-18 20:35:15,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-18 20:35:15,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-18 20:35:15,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-18 20:35:15,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-18 20:35:15,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-18 20:35:15,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-18 20:35:15,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-18 20:35:15,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-18 20:35:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-18 20:35:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-18 20:35:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-18 20:35:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-18 20:35:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-18 20:35:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-18 20:35:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-18 20:35:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-18 20:35:15,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-18 20:35:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:35:15,409 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:15,410 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:35:15,410 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:35:15,447 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:35:15,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 221 transitions, 472 flow [2022-11-18 20:35:15,509 INFO L130 PetriNetUnfolder]: 62/480 cut-off events. [2022-11-18 20:35:15,510 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:35:15,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 480 events. 62/480 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1658 event pairs, 1 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 324. Up to 16 conditions per place. [2022-11-18 20:35:15,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 221 transitions, 472 flow [2022-11-18 20:35:15,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 221 transitions, 472 flow [2022-11-18 20:35:15,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:35:15,524 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;@76bf80b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:35:15,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-18 20:35:15,528 INFO L130 PetriNetUnfolder]: 2/53 cut-off events. [2022-11-18 20:35:15,528 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:35:15,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:15,528 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] [2022-11-18 20:35:15,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash 194405172, now seen corresponding path program 1 times [2022-11-18 20:35:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:15,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676517170] [2022-11-18 20:35:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:15,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:15,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676517170] [2022-11-18 20:35:15,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676517170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:15,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:15,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:35:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915824188] [2022-11-18 20:35:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:15,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:35:15,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:35:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:35:15,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 221 [2022-11-18 20:35:15,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 221 transitions, 472 flow. Second operand has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:15,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 221 [2022-11-18 20:35:15,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:15,634 INFO L130 PetriNetUnfolder]: 20/434 cut-off events. [2022-11-18 20:35:15,635 INFO L131 PetriNetUnfolder]: For 50/58 co-relation queries the response was YES. [2022-11-18 20:35:15,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 434 events. 20/434 cut-off events. For 50/58 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1503 event pairs, 1 based on Foata normal form. 106/472 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2022-11-18 20:35:15,640 INFO L137 encePairwiseOnDemand]: 198/221 looper letters, 6 selfloop transitions, 0 changer transitions 0/197 dead transitions. [2022-11-18 20:35:15,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 197 transitions, 436 flow [2022-11-18 20:35:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:35:15,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:35:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 411 transitions. [2022-11-18 20:35:15,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9298642533936652 [2022-11-18 20:35:15,642 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 411 transitions. [2022-11-18 20:35:15,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 411 transitions. [2022-11-18 20:35:15,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:15,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 411 transitions. [2022-11-18 20:35:15,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 205.5) internal successors, (411), 2 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) [2022-11-18 20:35:15,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,645 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,645 INFO L175 Difference]: Start difference. First operand has 199 places, 221 transitions, 472 flow. Second operand 2 states and 411 transitions. [2022-11-18 20:35:15,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 197 transitions, 436 flow [2022-11-18 20:35:15,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 197 transitions, 436 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:15,649 INFO L231 Difference]: Finished difference. Result has 199 places, 197 transitions, 424 flow [2022-11-18 20:35:15,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=424, PETRI_PLACES=199, PETRI_TRANSITIONS=197} [2022-11-18 20:35:15,650 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 0 predicate places. [2022-11-18 20:35:15,650 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 197 transitions, 424 flow [2022-11-18 20:35:15,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:15,651 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] [2022-11-18 20:35:15,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:35:15,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:15,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash 195328693, now seen corresponding path program 1 times [2022-11-18 20:35:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:15,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107822529] [2022-11-18 20:35:15,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:15,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:15,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:15,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107822529] [2022-11-18 20:35:15,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107822529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:15,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:15,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452029640] [2022-11-18 20:35:15,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:35:15,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 221 [2022-11-18 20:35:15,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:15,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 221 [2022-11-18 20:35:15,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:15,769 INFO L130 PetriNetUnfolder]: 16/405 cut-off events. [2022-11-18 20:35:15,769 INFO L131 PetriNetUnfolder]: For 43/76 co-relation queries the response was YES. [2022-11-18 20:35:15,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 405 events. 16/405 cut-off events. For 43/76 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1367 event pairs, 1 based on Foata normal form. 1/345 useless extension candidates. Maximal degree in co-relation 463. Up to 30 conditions per place. [2022-11-18 20:35:15,774 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 15 selfloop transitions, 2 changer transitions 0/201 dead transitions. [2022-11-18 20:35:15,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 201 transitions, 466 flow [2022-11-18 20:35:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:35:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2022-11-18 20:35:15,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8597285067873304 [2022-11-18 20:35:15,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2022-11-18 20:35:15,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2022-11-18 20:35:15,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:15,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2022-11-18 20:35:15,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,790 INFO L175 Difference]: Start difference. First operand has 199 places, 197 transitions, 424 flow. Second operand 3 states and 570 transitions. [2022-11-18 20:35:15,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 201 transitions, 466 flow [2022-11-18 20:35:15,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 201 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:15,794 INFO L231 Difference]: Finished difference. Result has 202 places, 198 transitions, 436 flow [2022-11-18 20:35:15,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=202, PETRI_TRANSITIONS=198} [2022-11-18 20:35:15,795 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 3 predicate places. [2022-11-18 20:35:15,796 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 198 transitions, 436 flow [2022-11-18 20:35:15,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:15,797 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] [2022-11-18 20:35:15,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:35:15,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:15,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash -841689136, now seen corresponding path program 1 times [2022-11-18 20:35:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:15,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179531246] [2022-11-18 20:35:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:15,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:15,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179531246] [2022-11-18 20:35:15,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179531246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:15,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:15,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:15,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242995312] [2022-11-18 20:35:15,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:15,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:15,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:15,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:15,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:15,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 221 [2022-11-18 20:35:15,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 198 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:15,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 221 [2022-11-18 20:35:15,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:15,966 INFO L130 PetriNetUnfolder]: 16/403 cut-off events. [2022-11-18 20:35:15,967 INFO L131 PetriNetUnfolder]: For 46/102 co-relation queries the response was YES. [2022-11-18 20:35:15,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 403 events. 16/403 cut-off events. For 46/102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1363 event pairs, 1 based on Foata normal form. 3/350 useless extension candidates. Maximal degree in co-relation 482. Up to 40 conditions per place. [2022-11-18 20:35:15,972 INFO L137 encePairwiseOnDemand]: 215/221 looper letters, 21 selfloop transitions, 4 changer transitions 0/204 dead transitions. [2022-11-18 20:35:15,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 204 transitions, 498 flow [2022-11-18 20:35:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:35:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 922 transitions. [2022-11-18 20:35:15,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8343891402714932 [2022-11-18 20:35:15,976 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 922 transitions. [2022-11-18 20:35:15,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 922 transitions. [2022-11-18 20:35:15,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:15,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 922 transitions. [2022-11-18 20:35:15,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.4) internal successors, (922), 5 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,999 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:16,000 INFO L175 Difference]: Start difference. First operand has 202 places, 198 transitions, 436 flow. Second operand 5 states and 922 transitions. [2022-11-18 20:35:16,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 204 transitions, 498 flow [2022-11-18 20:35:16,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 204 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:35:16,005 INFO L231 Difference]: Finished difference. Result has 208 places, 200 transitions, 460 flow [2022-11-18 20:35:16,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=460, PETRI_PLACES=208, PETRI_TRANSITIONS=200} [2022-11-18 20:35:16,006 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 9 predicate places. [2022-11-18 20:35:16,006 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 200 transitions, 460 flow [2022-11-18 20:35:16,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:16,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:16,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:16,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:35:16,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash -243295842, now seen corresponding path program 1 times [2022-11-18 20:35:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:16,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424734101] [2022-11-18 20:35:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:16,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:16,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424734101] [2022-11-18 20:35:16,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424734101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:16,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:16,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977528491] [2022-11-18 20:35:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:16,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:16,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:16,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 221 [2022-11-18 20:35:16,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 200 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:16,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:16,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 221 [2022-11-18 20:35:16,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:17,890 INFO L130 PetriNetUnfolder]: 1933/8487 cut-off events. [2022-11-18 20:35:17,891 INFO L131 PetriNetUnfolder]: For 1304/1447 co-relation queries the response was YES. [2022-11-18 20:35:17,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12035 conditions, 8487 events. 1933/8487 cut-off events. For 1304/1447 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 96791 event pairs, 986 based on Foata normal form. 0/7158 useless extension candidates. Maximal degree in co-relation 12024. Up to 2017 conditions per place. [2022-11-18 20:35:18,036 INFO L137 encePairwiseOnDemand]: 213/221 looper letters, 52 selfloop transitions, 8 changer transitions 0/235 dead transitions. [2022-11-18 20:35:18,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 235 transitions, 692 flow [2022-11-18 20:35:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:35:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 924 transitions. [2022-11-18 20:35:18,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8361990950226245 [2022-11-18 20:35:18,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 924 transitions. [2022-11-18 20:35:18,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 924 transitions. [2022-11-18 20:35:18,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:18,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 924 transitions. [2022-11-18 20:35:18,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.8) internal successors, (924), 5 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,051 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,051 INFO L175 Difference]: Start difference. First operand has 208 places, 200 transitions, 460 flow. Second operand 5 states and 924 transitions. [2022-11-18 20:35:18,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 235 transitions, 692 flow [2022-11-18 20:35:18,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 235 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:35:18,059 INFO L231 Difference]: Finished difference. Result has 213 places, 207 transitions, 520 flow [2022-11-18 20:35:18,059 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=520, PETRI_PLACES=213, PETRI_TRANSITIONS=207} [2022-11-18 20:35:18,060 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 14 predicate places. [2022-11-18 20:35:18,060 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 207 transitions, 520 flow [2022-11-18 20:35:18,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:18,061 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:18,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:35:18,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash 753636777, now seen corresponding path program 1 times [2022-11-18 20:35:18,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:18,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866279518] [2022-11-18 20:35:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:18,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:18,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:18,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866279518] [2022-11-18 20:35:18,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866279518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:18,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884776997] [2022-11-18 20:35:18,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:18,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:18,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:18,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:18,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:35:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:18,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:35:18,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:18,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:18,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884776997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:18,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:18,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:35:18,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547302738] [2022-11-18 20:35:18,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:18,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:18,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:18,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:18,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:18,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 221 [2022-11-18 20:35:18,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 207 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:18,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 221 [2022-11-18 20:35:18,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:18,784 INFO L130 PetriNetUnfolder]: 75/1402 cut-off events. [2022-11-18 20:35:18,784 INFO L131 PetriNetUnfolder]: For 303/877 co-relation queries the response was YES. [2022-11-18 20:35:18,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 1402 events. 75/1402 cut-off events. For 303/877 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10011 event pairs, 9 based on Foata normal form. 3/1196 useless extension candidates. Maximal degree in co-relation 1737. Up to 88 conditions per place. [2022-11-18 20:35:18,802 INFO L137 encePairwiseOnDemand]: 216/221 looper letters, 24 selfloop transitions, 4 changer transitions 0/217 dead transitions. [2022-11-18 20:35:18,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 217 transitions, 605 flow [2022-11-18 20:35:18,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:35:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2022-11-18 20:35:18,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8536953242835595 [2022-11-18 20:35:18,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2022-11-18 20:35:18,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2022-11-18 20:35:18,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:18,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2022-11-18 20:35:18,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,810 INFO L175 Difference]: Start difference. First operand has 213 places, 207 transitions, 520 flow. Second operand 3 states and 566 transitions. [2022-11-18 20:35:18,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 217 transitions, 605 flow [2022-11-18 20:35:18,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 217 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:35:18,816 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 546 flow [2022-11-18 20:35:18,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-11-18 20:35:18,817 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 17 predicate places. [2022-11-18 20:35:18,818 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 546 flow [2022-11-18 20:35:18,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:18,818 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] [2022-11-18 20:35:18,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 20:35:19,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 20:35:19,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1887904325, now seen corresponding path program 1 times [2022-11-18 20:35:19,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:19,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175122092] [2022-11-18 20:35:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:19,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:19,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:19,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175122092] [2022-11-18 20:35:19,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175122092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:19,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957232937] [2022-11-18 20:35:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:19,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:19,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:19,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:35:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:19,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:35:19,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:19,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:19,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957232937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:19,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:19,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:35:19,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495953806] [2022-11-18 20:35:19,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:19,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:19,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:19,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:19,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 221 [2022-11-18 20:35:19,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:19,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 221 [2022-11-18 20:35:19,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:19,687 INFO L130 PetriNetUnfolder]: 92/1839 cut-off events. [2022-11-18 20:35:19,687 INFO L131 PetriNetUnfolder]: For 466/1389 co-relation queries the response was YES. [2022-11-18 20:35:19,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1839 events. 92/1839 cut-off events. For 466/1389 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14903 event pairs, 11 based on Foata normal form. 6/1579 useless extension candidates. Maximal degree in co-relation 2292. Up to 132 conditions per place. [2022-11-18 20:35:19,714 INFO L137 encePairwiseOnDemand]: 216/221 looper letters, 23 selfloop transitions, 4 changer transitions 0/216 dead transitions. [2022-11-18 20:35:19,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 216 transitions, 619 flow [2022-11-18 20:35:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:35:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2022-11-18 20:35:19,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521870286576169 [2022-11-18 20:35:19,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2022-11-18 20:35:19,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2022-11-18 20:35:19,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:19,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2022-11-18 20:35:19,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,721 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 546 flow. Second operand 3 states and 565 transitions. [2022-11-18 20:35:19,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 216 transitions, 619 flow [2022-11-18 20:35:19,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 216 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:35:19,726 INFO L231 Difference]: Finished difference. Result has 218 places, 209 transitions, 552 flow [2022-11-18 20:35:19,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=552, PETRI_PLACES=218, PETRI_TRANSITIONS=209} [2022-11-18 20:35:19,727 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 19 predicate places. [2022-11-18 20:35:19,728 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 209 transitions, 552 flow [2022-11-18 20:35:19,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:19,728 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:19,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:19,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:35:19,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1605976007, now seen corresponding path program 1 times [2022-11-18 20:35:19,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:19,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311758687] [2022-11-18 20:35:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:19,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:20,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311758687] [2022-11-18 20:35:20,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311758687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331802707] [2022-11-18 20:35:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:20,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:20,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:20,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:20,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:35:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:20,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:35:20,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:20,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:20,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331802707] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:20,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:20,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:35:20,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744097469] [2022-11-18 20:35:20,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:20,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:35:20,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:35:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:35:20,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 221 [2022-11-18 20:35:20,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 209 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 181.9) internal successors, (1819), 10 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:20,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:20,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 221 [2022-11-18 20:35:20,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:20,717 INFO L130 PetriNetUnfolder]: 68/1658 cut-off events. [2022-11-18 20:35:20,717 INFO L131 PetriNetUnfolder]: For 384/767 co-relation queries the response was YES. [2022-11-18 20:35:20,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1658 events. 68/1658 cut-off events. For 384/767 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13134 event pairs, 32 based on Foata normal form. 37/1437 useless extension candidates. Maximal degree in co-relation 2035. Up to 119 conditions per place. [2022-11-18 20:35:20,743 INFO L137 encePairwiseOnDemand]: 213/221 looper letters, 23 selfloop transitions, 11 changer transitions 0/222 dead transitions. [2022-11-18 20:35:20,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 222 transitions, 654 flow [2022-11-18 20:35:20,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:35:20,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:35:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2006 transitions. [2022-11-18 20:35:20,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8251748251748252 [2022-11-18 20:35:20,751 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2006 transitions. [2022-11-18 20:35:20,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2006 transitions. [2022-11-18 20:35:20,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:20,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2006 transitions. [2022-11-18 20:35:20,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 182.36363636363637) internal successors, (2006), 11 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:20,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:20,768 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:20,768 INFO L175 Difference]: Start difference. First operand has 218 places, 209 transitions, 552 flow. Second operand 11 states and 2006 transitions. [2022-11-18 20:35:20,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 222 transitions, 654 flow [2022-11-18 20:35:20,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 222 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:20,774 INFO L231 Difference]: Finished difference. Result has 233 places, 214 transitions, 618 flow [2022-11-18 20:35:20,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=618, PETRI_PLACES=233, PETRI_TRANSITIONS=214} [2022-11-18 20:35:20,775 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 34 predicate places. [2022-11-18 20:35:20,775 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 214 transitions, 618 flow [2022-11-18 20:35:20,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.9) internal successors, (1819), 10 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:20,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:20,776 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, 1, 1, 1, 1, 1] [2022-11-18 20:35:20,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:20,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:35:20,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:20,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:20,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2146605837, now seen corresponding path program 1 times [2022-11-18 20:35:20,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:20,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789099260] [2022-11-18 20:35:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:20,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:21,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789099260] [2022-11-18 20:35:21,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789099260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:21,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123927006] [2022-11-18 20:35:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:21,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:21,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:21,065 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:21,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:35:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:35:21,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:21,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:21,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123927006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:21,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:21,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:35:21,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473647385] [2022-11-18 20:35:21,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:21,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:35:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:21,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:35:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:35:21,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 221 [2022-11-18 20:35:21,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 214 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 181.66666666666666) internal successors, (1090), 6 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:21,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:21,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 221 [2022-11-18 20:35:21,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:21,713 INFO L130 PetriNetUnfolder]: 68/1656 cut-off events. [2022-11-18 20:35:21,713 INFO L131 PetriNetUnfolder]: For 414/764 co-relation queries the response was YES. [2022-11-18 20:35:21,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 1656 events. 68/1656 cut-off events. For 414/764 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13157 event pairs, 32 based on Foata normal form. 13/1411 useless extension candidates. Maximal degree in co-relation 2052. Up to 126 conditions per place. [2022-11-18 20:35:21,742 INFO L137 encePairwiseOnDemand]: 216/221 looper letters, 20 selfloop transitions, 8 changer transitions 0/216 dead transitions. [2022-11-18 20:35:21,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 216 transitions, 670 flow [2022-11-18 20:35:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:35:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:35:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1278 transitions. [2022-11-18 20:35:21,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.826115061409179 [2022-11-18 20:35:21,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1278 transitions. [2022-11-18 20:35:21,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1278 transitions. [2022-11-18 20:35:21,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:21,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1278 transitions. [2022-11-18 20:35:21,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:21,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:21,755 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:21,756 INFO L175 Difference]: Start difference. First operand has 233 places, 214 transitions, 618 flow. Second operand 7 states and 1278 transitions. [2022-11-18 20:35:21,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 216 transitions, 670 flow [2022-11-18 20:35:21,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 216 transitions, 656 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 20:35:21,763 INFO L231 Difference]: Finished difference. Result has 233 places, 212 transitions, 606 flow [2022-11-18 20:35:21,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=606, PETRI_PLACES=233, PETRI_TRANSITIONS=212} [2022-11-18 20:35:21,764 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 34 predicate places. [2022-11-18 20:35:21,765 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 212 transitions, 606 flow [2022-11-18 20:35:21,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.66666666666666) internal successors, (1090), 6 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:21,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:21,766 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:21,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:21,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ba8fefc-198f-449c-b338-91ead816aa46/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:35:21,980 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1438706304, now seen corresponding path program 1 times [2022-11-18 20:35:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:21,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598833678] [2022-11-18 20:35:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:21,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:22,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:22,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598833678] [2022-11-18 20:35:22,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598833678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:22,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:22,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:35:22,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709357935] [2022-11-18 20:35:22,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:22,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:35:22,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:22,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:35:22,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:22,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 221 [2022-11-18 20:35:22,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 212 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:22,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:22,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 221 [2022-11-18 20:35:22,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:28,573 INFO L130 PetriNetUnfolder]: 7313/33302 cut-off events. [2022-11-18 20:35:28,573 INFO L131 PetriNetUnfolder]: For 9493/10372 co-relation queries the response was YES. [2022-11-18 20:35:28,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49528 conditions, 33302 events. 7313/33302 cut-off events. For 9493/10372 co-relation queries the response was YES. Maximal size of possible extension queue 1580. Compared 479341 event pairs, 2108 based on Foata normal form. 51/28427 useless extension candidates. Maximal degree in co-relation 49507. Up to 4844 conditions per place. [2022-11-18 20:35:29,159 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 100 selfloop transitions, 27 changer transitions 0/302 dead transitions. [2022-11-18 20:35:29,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 302 transitions, 1186 flow [2022-11-18 20:35:29,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:35:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:35:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1632 transitions. [2022-11-18 20:35:29,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8205128205128205 [2022-11-18 20:35:29,165 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1632 transitions. [2022-11-18 20:35:29,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1632 transitions. [2022-11-18 20:35:29,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:29,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1632 transitions. [2022-11-18 20:35:29,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 181.33333333333334) internal successors, (1632), 9 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:29,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:29,173 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:29,174 INFO L175 Difference]: Start difference. First operand has 233 places, 212 transitions, 606 flow. Second operand 9 states and 1632 transitions. [2022-11-18 20:35:29,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 302 transitions, 1186 flow [2022-11-18 20:35:29,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 302 transitions, 1171 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-18 20:35:29,190 INFO L231 Difference]: Finished difference. Result has 241 places, 231 transitions, 795 flow [2022-11-18 20:35:29,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=795, PETRI_PLACES=241, PETRI_TRANSITIONS=231} [2022-11-18 20:35:29,191 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 42 predicate places. [2022-11-18 20:35:29,192 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 231 transitions, 795 flow [2022-11-18 20:35:29,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:29,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:29,193 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:29,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:35:29,193 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:29,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1650223350, now seen corresponding path program 1 times [2022-11-18 20:35:29,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:29,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510169448] [2022-11-18 20:35:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:29,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:29,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510169448] [2022-11-18 20:35:29,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510169448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:29,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:29,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:35:29,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024699040] [2022-11-18 20:35:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:29,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:35:29,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:35:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:29,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 221 [2022-11-18 20:35:29,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 231 transitions, 795 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:29,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:29,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 221 [2022-11-18 20:35:29,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:35,320 INFO L130 PetriNetUnfolder]: 6883/31079 cut-off events. [2022-11-18 20:35:35,320 INFO L131 PetriNetUnfolder]: For 25401/26643 co-relation queries the response was YES. [2022-11-18 20:35:35,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55663 conditions, 31079 events. 6883/31079 cut-off events. For 25401/26643 co-relation queries the response was YES. Maximal size of possible extension queue 1587. Compared 438330 event pairs, 3235 based on Foata normal form. 421/26659 useless extension candidates. Maximal degree in co-relation 55639. Up to 5358 conditions per place. [2022-11-18 20:35:35,718 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 107 selfloop transitions, 27 changer transitions 0/309 dead transitions. [2022-11-18 20:35:35,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 309 transitions, 1440 flow [2022-11-18 20:35:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:35:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:35:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1630 transitions. [2022-11-18 20:35:35,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195072900955254 [2022-11-18 20:35:35,724 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1630 transitions. [2022-11-18 20:35:35,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1630 transitions. [2022-11-18 20:35:35,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:35,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1630 transitions. [2022-11-18 20:35:35,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 181.11111111111111) internal successors, (1630), 9 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:35,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:35,734 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:35,734 INFO L175 Difference]: Start difference. First operand has 241 places, 231 transitions, 795 flow. Second operand 9 states and 1630 transitions. [2022-11-18 20:35:35,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 309 transitions, 1440 flow [2022-11-18 20:35:35,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 309 transitions, 1373 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-18 20:35:35,819 INFO L231 Difference]: Finished difference. Result has 247 places, 239 transitions, 876 flow [2022-11-18 20:35:35,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=876, PETRI_PLACES=247, PETRI_TRANSITIONS=239} [2022-11-18 20:35:35,820 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 48 predicate places. [2022-11-18 20:35:35,820 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 239 transitions, 876 flow [2022-11-18 20:35:35,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:35,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:35,821 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] [2022-11-18 20:35:35,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:35:35,822 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:35,822 INFO L85 PathProgramCache]: Analyzing trace with hash 494947219, now seen corresponding path program 1 times [2022-11-18 20:35:35,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:35,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2552278] [2022-11-18 20:35:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:35,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:35:35,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:35,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2552278] [2022-11-18 20:35:35,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2552278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:35,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:35,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:35,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056817348] [2022-11-18 20:35:35,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:35,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:35,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:35,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:35,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 221 [2022-11-18 20:35:35,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 239 transitions, 876 flow. Second operand has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:35,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:35,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 221 [2022-11-18 20:35:35,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:42,825 INFO L130 PetriNetUnfolder]: 7739/36407 cut-off events. [2022-11-18 20:35:42,825 INFO L131 PetriNetUnfolder]: For 29715/31885 co-relation queries the response was YES. [2022-11-18 20:35:43,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66482 conditions, 36407 events. 7739/36407 cut-off events. For 29715/31885 co-relation queries the response was YES. Maximal size of possible extension queue 1918. Compared 537611 event pairs, 3461 based on Foata normal form. 347/31278 useless extension candidates. Maximal degree in co-relation 66455. Up to 8488 conditions per place. [2022-11-18 20:35:43,283 INFO L137 encePairwiseOnDemand]: 213/221 looper letters, 93 selfloop transitions, 11 changer transitions 0/288 dead transitions. [2022-11-18 20:35:43,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 288 transitions, 1392 flow [2022-11-18 20:35:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:35:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 922 transitions. [2022-11-18 20:35:43,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8343891402714932 [2022-11-18 20:35:43,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 922 transitions. [2022-11-18 20:35:43,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 922 transitions. [2022-11-18 20:35:43,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:43,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 922 transitions. [2022-11-18 20:35:43,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.4) internal successors, (922), 5 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:43,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:43,290 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:43,290 INFO L175 Difference]: Start difference. First operand has 247 places, 239 transitions, 876 flow. Second operand 5 states and 922 transitions. [2022-11-18 20:35:43,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 288 transitions, 1392 flow [2022-11-18 20:35:43,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 288 transitions, 1350 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 20:35:43,434 INFO L231 Difference]: Finished difference. Result has 250 places, 244 transitions, 926 flow [2022-11-18 20:35:43,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=926, PETRI_PLACES=250, PETRI_TRANSITIONS=244} [2022-11-18 20:35:43,435 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 51 predicate places. [2022-11-18 20:35:43,435 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 244 transitions, 926 flow [2022-11-18 20:35:43,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:43,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:43,436 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:43,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 20:35:43,436 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:43,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1779558213, now seen corresponding path program 1 times [2022-11-18 20:35:43,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:43,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274205896] [2022-11-18 20:35:43,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:43,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:35:43,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:43,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274205896] [2022-11-18 20:35:43,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274205896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:43,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:43,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925620415] [2022-11-18 20:35:43,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:43,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:43,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 221 [2022-11-18 20:35:43,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 244 transitions, 926 flow. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:43,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:43,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 221 [2022-11-18 20:35:43,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:45,106 INFO L130 PetriNetUnfolder]: 311/6451 cut-off events. [2022-11-18 20:35:45,106 INFO L131 PetriNetUnfolder]: For 2353/4352 co-relation queries the response was YES. [2022-11-18 20:35:45,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8776 conditions, 6451 events. 311/6451 cut-off events. For 2353/4352 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 78067 event pairs, 137 based on Foata normal form. 194/5596 useless extension candidates. Maximal degree in co-relation 8745. Up to 351 conditions per place. [2022-11-18 20:35:45,232 INFO L137 encePairwiseOnDemand]: 215/221 looper letters, 12 selfloop transitions, 12 changer transitions 0/244 dead transitions. [2022-11-18 20:35:45,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 244 transitions, 972 flow [2022-11-18 20:35:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:35:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 913 transitions. [2022-11-18 20:35:45,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8262443438914027 [2022-11-18 20:35:45,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 913 transitions. [2022-11-18 20:35:45,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 913 transitions. [2022-11-18 20:35:45,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:45,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 913 transitions. [2022-11-18 20:35:45,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:45,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:45,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:45,243 INFO L175 Difference]: Start difference. First operand has 250 places, 244 transitions, 926 flow. Second operand 5 states and 913 transitions. [2022-11-18 20:35:45,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 244 transitions, 972 flow [2022-11-18 20:35:45,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 244 transitions, 963 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:35:45,257 INFO L231 Difference]: Finished difference. Result has 251 places, 244 transitions, 947 flow [2022-11-18 20:35:45,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=947, PETRI_PLACES=251, PETRI_TRANSITIONS=244} [2022-11-18 20:35:45,258 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 52 predicate places. [2022-11-18 20:35:45,258 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 244 transitions, 947 flow [2022-11-18 20:35:45,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:45,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:45,259 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, 1, 1, 1, 1] [2022-11-18 20:35:45,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 20:35:45,260 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:35:45,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash -252264477, now seen corresponding path program 1 times [2022-11-18 20:35:45,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:45,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36666257] [2022-11-18 20:35:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:35:45,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:45,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36666257] [2022-11-18 20:35:45,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36666257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:45,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:45,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:35:45,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373962051] [2022-11-18 20:35:45,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:45,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:35:45,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:45,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:35:45,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:45,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 221 [2022-11-18 20:35:45,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 244 transitions, 947 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:45,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:45,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 221 [2022-11-18 20:35:45,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:59,677 INFO L130 PetriNetUnfolder]: 16742/73813 cut-off events. [2022-11-18 20:35:59,678 INFO L131 PetriNetUnfolder]: For 58141/63702 co-relation queries the response was YES. [2022-11-18 20:36:00,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134659 conditions, 73813 events. 16742/73813 cut-off events. For 58141/63702 co-relation queries the response was YES. Maximal size of possible extension queue 4057. Compared 1191631 event pairs, 5151 based on Foata normal form. 838/63642 useless extension candidates. Maximal degree in co-relation 134630. Up to 12495 conditions per place. [2022-11-18 20:36:00,723 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 149 selfloop transitions, 46 changer transitions 0/374 dead transitions. [2022-11-18 20:36:00,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 374 transitions, 2092 flow [2022-11-18 20:36:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:36:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:36:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1629 transitions. [2022-11-18 20:36:00,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8190045248868778 [2022-11-18 20:36:00,726 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1629 transitions. [2022-11-18 20:36:00,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1629 transitions. [2022-11-18 20:36:00,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:00,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1629 transitions. [2022-11-18 20:36:00,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 181.0) internal successors, (1629), 9 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:00,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:00,734 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:00,734 INFO L175 Difference]: Start difference. First operand has 251 places, 244 transitions, 947 flow. Second operand 9 states and 1629 transitions. [2022-11-18 20:36:00,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 374 transitions, 2092 flow [2022-11-18 20:36:01,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 374 transitions, 2074 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:36:01,164 INFO L231 Difference]: Finished difference. Result has 262 places, 279 transitions, 1418 flow [2022-11-18 20:36:01,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1418, PETRI_PLACES=262, PETRI_TRANSITIONS=279} [2022-11-18 20:36:01,165 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 63 predicate places. [2022-11-18 20:36:01,166 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 279 transitions, 1418 flow [2022-11-18 20:36:01,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:01,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:01,167 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, 1, 1, 1, 1, 1] [2022-11-18 20:36:01,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:36:01,167 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:36:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1214335393, now seen corresponding path program 1 times [2022-11-18 20:36:01,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:01,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644380391] [2022-11-18 20:36:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:01,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:36:01,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:01,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644380391] [2022-11-18 20:36:01,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644380391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:01,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:01,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:36:01,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516219900] [2022-11-18 20:36:01,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:01,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:36:01,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:01,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:36:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:36:01,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 221 [2022-11-18 20:36:01,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 279 transitions, 1418 flow. Second operand has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:01,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:01,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 221 [2022-11-18 20:36:01,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:04,817 INFO L130 PetriNetUnfolder]: 2548/17682 cut-off events. [2022-11-18 20:36:04,817 INFO L131 PetriNetUnfolder]: For 15303/15790 co-relation queries the response was YES. [2022-11-18 20:36:04,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30753 conditions, 17682 events. 2548/17682 cut-off events. For 15303/15790 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 234582 event pairs, 852 based on Foata normal form. 844/16781 useless extension candidates. Maximal degree in co-relation 30718. Up to 2951 conditions per place. [2022-11-18 20:36:05,012 INFO L137 encePairwiseOnDemand]: 211/221 looper letters, 53 selfloop transitions, 10 changer transitions 0/301 dead transitions. [2022-11-18 20:36:05,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 301 transitions, 1597 flow [2022-11-18 20:36:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:36:05,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:36:05,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2022-11-18 20:36:05,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7710407239819005 [2022-11-18 20:36:05,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2022-11-18 20:36:05,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2022-11-18 20:36:05,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:05,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2022-11-18 20:36:05,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:05,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:05,019 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:05,020 INFO L175 Difference]: Start difference. First operand has 262 places, 279 transitions, 1418 flow. Second operand 5 states and 852 transitions. [2022-11-18 20:36:05,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 301 transitions, 1597 flow [2022-11-18 20:36:05,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 301 transitions, 1567 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 20:36:05,099 INFO L231 Difference]: Finished difference. Result has 264 places, 282 transitions, 1418 flow [2022-11-18 20:36:05,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1418, PETRI_PLACES=264, PETRI_TRANSITIONS=282} [2022-11-18 20:36:05,101 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 65 predicate places. [2022-11-18 20:36:05,101 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 282 transitions, 1418 flow [2022-11-18 20:36:05,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:05,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:05,102 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, 1, 1, 1, 1, 1] [2022-11-18 20:36:05,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:36:05,102 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:36:05,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:05,103 INFO L85 PathProgramCache]: Analyzing trace with hash 769736619, now seen corresponding path program 1 times [2022-11-18 20:36:05,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:05,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659439282] [2022-11-18 20:36:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:36:05,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:05,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659439282] [2022-11-18 20:36:05,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659439282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:05,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:05,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:36:05,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884484344] [2022-11-18 20:36:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:05,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:36:05,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:05,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:36:05,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:36:05,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 221 [2022-11-18 20:36:05,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 282 transitions, 1418 flow. Second operand has 6 states, 6 states have (on average 168.83333333333334) internal successors, (1013), 6 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:05,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:05,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 221 [2022-11-18 20:36:05,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:10,411 INFO L130 PetriNetUnfolder]: 2758/27310 cut-off events. [2022-11-18 20:36:10,411 INFO L131 PetriNetUnfolder]: For 24574/25044 co-relation queries the response was YES. [2022-11-18 20:36:10,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43922 conditions, 27310 events. 2758/27310 cut-off events. For 24574/25044 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 416474 event pairs, 1527 based on Foata normal form. 229/23994 useless extension candidates. Maximal degree in co-relation 43885. Up to 3971 conditions per place. [2022-11-18 20:36:10,683 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 141 selfloop transitions, 40 changer transitions 0/364 dead transitions. [2022-11-18 20:36:10,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 364 transitions, 2309 flow [2022-11-18 20:36:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:36:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:36:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1623 transitions. [2022-11-18 20:36:10,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8159879336349924 [2022-11-18 20:36:10,685 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1623 transitions. [2022-11-18 20:36:10,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1623 transitions. [2022-11-18 20:36:10,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:10,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1623 transitions. [2022-11-18 20:36:10,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 180.33333333333334) internal successors, (1623), 9 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:10,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:10,692 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:10,692 INFO L175 Difference]: Start difference. First operand has 264 places, 282 transitions, 1418 flow. Second operand 9 states and 1623 transitions. [2022-11-18 20:36:10,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 364 transitions, 2309 flow [2022-11-18 20:36:10,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 364 transitions, 2287 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:36:10,784 INFO L231 Difference]: Finished difference. Result has 271 places, 294 transitions, 1656 flow [2022-11-18 20:36:10,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1656, PETRI_PLACES=271, PETRI_TRANSITIONS=294} [2022-11-18 20:36:10,786 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 72 predicate places. [2022-11-18 20:36:10,786 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 294 transitions, 1656 flow [2022-11-18 20:36:10,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.83333333333334) internal successors, (1013), 6 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:10,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:10,787 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, 1, 1, 1, 1, 1] [2022-11-18 20:36:10,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 20:36:10,787 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:36:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:10,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1281563401, now seen corresponding path program 1 times [2022-11-18 20:36:10,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:10,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198958242] [2022-11-18 20:36:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:10,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:36:10,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:10,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198958242] [2022-11-18 20:36:10,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198958242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:10,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:10,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:10,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030570481] [2022-11-18 20:36:10,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:10,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:36:10,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:10,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:36:10,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:36:10,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 221 [2022-11-18 20:36:10,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 294 transitions, 1656 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:10,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:10,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 221 [2022-11-18 20:36:10,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand