./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/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_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/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_21b5da70-08d3-48d0-817a-4dc88118221e/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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- 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 20:49:55,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:49:55,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:49:55,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:49:55,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:49:55,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:49:55,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:49:55,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:49:55,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:49:55,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:49:55,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:49:55,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:49:55,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:49:55,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:49:55,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:49:55,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:49:55,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:49:55,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:49:55,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:49:55,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:49:55,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:49:55,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:49:55,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:49:55,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:49:55,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:49:55,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:49:55,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:49:55,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:49:55,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:49:55,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:49:55,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:49:55,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:49:55,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:49:55,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:49:55,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:49:55,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:49:55,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:49:55,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:49:55,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:49:55,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:49:55,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:49:55,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:49:55,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:49:55,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:49:55,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:49:55,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:49:55,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:49:55,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:49:55,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:49:55,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:49:55,869 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:49:55,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:49:55,870 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:49:55,871 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:49:55,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:49:55,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:49:55,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:49:55,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:49:55,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:49:55,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:49:55,872 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:49:55,872 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:49:55,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:49:55,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:49:55,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:49:55,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:49:55,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:49:55,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:49:55,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:49:55,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:49:55,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:49:55,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:49:55,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:49:55,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:49:55,877 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:49:55,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:49:55,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:49:55,877 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_21b5da70-08d3-48d0-817a-4dc88118221e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2022-11-18 20:49:56,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:49:56,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:49:56,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:49:56,221 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:49:56,222 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:49:56,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/queue_longer.i [2022-11-18 20:49:56,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/data/4965d8af9/a1a008d5a2a943eab0162b056d413c40/FLAGcc0c5f19f [2022-11-18 20:49:56,956 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:49:56,961 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/sv-benchmarks/c/pthread/queue_longer.i [2022-11-18 20:49:56,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/data/4965d8af9/a1a008d5a2a943eab0162b056d413c40/FLAGcc0c5f19f [2022-11-18 20:49:57,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/data/4965d8af9/a1a008d5a2a943eab0162b056d413c40 [2022-11-18 20:49:57,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:49:57,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:49:57,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:49:57,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:49:57,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:49:57,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:57" (1/1) ... [2022-11-18 20:49:57,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30281c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:57, skipping insertion in model container [2022-11-18 20:49:57,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:57" (1/1) ... [2022-11-18 20:49:57,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:49:57,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:49:57,933 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_21b5da70-08d3-48d0-817a-4dc88118221e/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-18 20:49:57,939 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_21b5da70-08d3-48d0-817a-4dc88118221e/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-18 20:49:57,948 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_21b5da70-08d3-48d0-817a-4dc88118221e/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-18 20:49:57,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:49:57,967 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:49:58,007 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_21b5da70-08d3-48d0-817a-4dc88118221e/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-18 20:49:58,008 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_21b5da70-08d3-48d0-817a-4dc88118221e/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-18 20:49:58,011 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_21b5da70-08d3-48d0-817a-4dc88118221e/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-18 20:49:58,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:49:58,074 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:49:58,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58 WrapperNode [2022-11-18 20:49:58,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:49:58,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:49:58,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:49:58,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:49:58,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,143 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2022-11-18 20:49:58,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:49:58,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:49:58,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:49:58,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:49:58,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,184 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:49:58,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:49:58,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:49:58,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:49:58,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (1/1) ... [2022-11-18 20:49:58,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:49:58,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:58,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:49:58,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:49:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 20:49:58,273 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 20:49:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 20:49:58,274 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 20:49:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:49:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:49:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:49:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:49:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:49:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:49:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:49:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:49:58,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:49:58,277 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 20:49:58,445 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:49:58,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:49:59,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:49:59,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:49:59,015 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:49:59,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:59 BoogieIcfgContainer [2022-11-18 20:49:59,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:49:59,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:49:59,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:49:59,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:49:59,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:57" (1/3) ... [2022-11-18 20:49:59,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f33f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:59, skipping insertion in model container [2022-11-18 20:49:59,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:58" (2/3) ... [2022-11-18 20:49:59,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f33f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:59, skipping insertion in model container [2022-11-18 20:49:59,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:59" (3/3) ... [2022-11-18 20:49:59,027 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-11-18 20:49:59,036 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:49:59,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:49:59,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 20:49:59,047 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:49:59,188 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:49:59,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 305 transitions, 626 flow [2022-11-18 20:49:59,366 INFO L130 PetriNetUnfolder]: 15/303 cut-off events. [2022-11-18 20:49:59,366 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:49:59,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 303 events. 15/303 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 469 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-18 20:49:59,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 305 transitions, 626 flow [2022-11-18 20:49:59,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 293 transitions, 595 flow [2022-11-18 20:49:59,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:49:59,423 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;@26147810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:49:59,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-18 20:49:59,473 INFO L130 PetriNetUnfolder]: 3/110 cut-off events. [2022-11-18 20:49:59,473 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:49:59,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:59,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:59,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:49:59,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1172668946, now seen corresponding path program 1 times [2022-11-18 20:49:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630204758] [2022-11-18 20:49:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:01,045 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 20:50:01,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:01,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630204758] [2022-11-18 20:50:01,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630204758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:01,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:01,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:50:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480072758] [2022-11-18 20:50:01,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:50:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:01,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:50:01,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:50:01,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 305 [2022-11-18 20:50:01,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 293 transitions, 595 flow. Second operand has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:01,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:01,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 305 [2022-11-18 20:50:01,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:02,728 INFO L130 PetriNetUnfolder]: 1003/4825 cut-off events. [2022-11-18 20:50:02,729 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-18 20:50:02,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 4825 events. 1003/4825 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 42090 event pairs, 789 based on Foata normal form. 203/4356 useless extension candidates. Maximal degree in co-relation 6146. Up to 1435 conditions per place. [2022-11-18 20:50:02,768 INFO L137 encePairwiseOnDemand]: 287/305 looper letters, 52 selfloop transitions, 12 changer transitions 0/279 dead transitions. [2022-11-18 20:50:02,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 279 transitions, 695 flow [2022-11-18 20:50:02,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:50:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:50:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3034 transitions. [2022-11-18 20:50:02,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651954602774275 [2022-11-18 20:50:02,796 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3034 transitions. [2022-11-18 20:50:02,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3034 transitions. [2022-11-18 20:50:02,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:02,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3034 transitions. [2022-11-18 20:50:02,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.3846153846154) internal successors, (3034), 13 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:02,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:02,835 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:02,836 INFO L175 Difference]: Start difference. First operand has 285 places, 293 transitions, 595 flow. Second operand 13 states and 3034 transitions. [2022-11-18 20:50:02,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 279 transitions, 695 flow [2022-11-18 20:50:02,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:50:02,849 INFO L231 Difference]: Finished difference. Result has 286 places, 279 transitions, 586 flow [2022-11-18 20:50:02,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=586, PETRI_PLACES=286, PETRI_TRANSITIONS=279} [2022-11-18 20:50:02,855 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 1 predicate places. [2022-11-18 20:50:02,855 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 279 transitions, 586 flow [2022-11-18 20:50:02,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:02,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:02,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:50:02,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2077670852, now seen corresponding path program 1 times [2022-11-18 20:50:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:02,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933422026] [2022-11-18 20:50:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:03,012 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 20:50:03,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:03,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933422026] [2022-11-18 20:50:03,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933422026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:03,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:03,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:03,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604050775] [2022-11-18 20:50:03,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:03,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:50:03,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:03,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:50:03,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:50:03,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-18 20:50:03,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 279 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:03,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-18 20:50:03,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:03,152 INFO L130 PetriNetUnfolder]: 34/483 cut-off events. [2022-11-18 20:50:03,152 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-11-18 20:50:03,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 483 events. 34/483 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1777 event pairs, 3 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 485. Up to 39 conditions per place. [2022-11-18 20:50:03,158 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 21 selfloop transitions, 4 changer transitions 0/289 dead transitions. [2022-11-18 20:50:03,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 289 transitions, 659 flow [2022-11-18 20:50:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:50:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:50:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1428 transitions. [2022-11-18 20:50:03,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363934426229508 [2022-11-18 20:50:03,163 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1428 transitions. [2022-11-18 20:50:03,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1428 transitions. [2022-11-18 20:50:03,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:03,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1428 transitions. [2022-11-18 20:50:03,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.6) internal successors, (1428), 5 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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 20:50:03,175 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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 20:50:03,175 INFO L175 Difference]: Start difference. First operand has 286 places, 279 transitions, 586 flow. Second operand 5 states and 1428 transitions. [2022-11-18 20:50:03,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 289 transitions, 659 flow [2022-11-18 20:50:03,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 636 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 20:50:03,182 INFO L231 Difference]: Finished difference. Result has 282 places, 282 transitions, 595 flow [2022-11-18 20:50:03,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=282, PETRI_TRANSITIONS=282} [2022-11-18 20:50:03,184 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, -3 predicate places. [2022-11-18 20:50:03,184 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 282 transitions, 595 flow [2022-11-18 20:50:03,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:03,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:03,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:50:03,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:03,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:03,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1235614095, now seen corresponding path program 1 times [2022-11-18 20:50:03,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:03,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320443988] [2022-11-18 20:50:03,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:03,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:13,766 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 20:50:13,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320443988] [2022-11-18 20:50:13,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320443988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:13,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:13,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:50:13,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117993296] [2022-11-18 20:50:13,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:13,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:50:13,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:50:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:50:13,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 305 [2022-11-18 20:50:13,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 282 transitions, 595 flow. Second operand has 21 states, 21 states have (on average 210.66666666666666) internal successors, (4424), 21 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:13,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:13,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 305 [2022-11-18 20:50:13,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:24,386 INFO L130 PetriNetUnfolder]: 3565/10831 cut-off events. [2022-11-18 20:50:24,387 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-18 20:50:24,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16627 conditions, 10831 events. 3565/10831 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 104504 event pairs, 2758 based on Foata normal form. 0/9490 useless extension candidates. Maximal degree in co-relation 16535. Up to 4855 conditions per place. [2022-11-18 20:50:24,487 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 119 selfloop transitions, 28 changer transitions 0/345 dead transitions. [2022-11-18 20:50:24,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 345 transitions, 1021 flow [2022-11-18 20:50:24,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:50:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:50:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4540 transitions. [2022-11-18 20:50:24,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7088212334113974 [2022-11-18 20:50:24,506 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4540 transitions. [2022-11-18 20:50:24,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4540 transitions. [2022-11-18 20:50:24,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:24,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4540 transitions. [2022-11-18 20:50:24,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 216.1904761904762) internal successors, (4540), 21 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:24,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:24,538 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:24,539 INFO L175 Difference]: Start difference. First operand has 282 places, 282 transitions, 595 flow. Second operand 21 states and 4540 transitions. [2022-11-18 20:50:24,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 345 transitions, 1021 flow [2022-11-18 20:50:24,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 345 transitions, 1019 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:50:24,550 INFO L231 Difference]: Finished difference. Result has 310 places, 303 transitions, 752 flow [2022-11-18 20:50:24,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=752, PETRI_PLACES=310, PETRI_TRANSITIONS=303} [2022-11-18 20:50:24,553 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 25 predicate places. [2022-11-18 20:50:24,554 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 303 transitions, 752 flow [2022-11-18 20:50:24,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 210.66666666666666) internal successors, (4424), 21 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:24,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:24,556 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:24,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:50:24,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:24,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1617130361, now seen corresponding path program 1 times [2022-11-18 20:50:24,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:24,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89168148] [2022-11-18 20:50:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:24,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:26,654 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 20:50:26,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:26,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89168148] [2022-11-18 20:50:26,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89168148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:26,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:26,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:50:26,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342041662] [2022-11-18 20:50:26,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:26,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:26,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:26,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:26,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:26,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-18 20:50:26,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 303 transitions, 752 flow. Second operand has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:26,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:26,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-18 20:50:26,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:31,064 INFO L130 PetriNetUnfolder]: 4207/14457 cut-off events. [2022-11-18 20:50:31,064 INFO L131 PetriNetUnfolder]: For 1205/1209 co-relation queries the response was YES. [2022-11-18 20:50:31,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22828 conditions, 14457 events. 4207/14457 cut-off events. For 1205/1209 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 150759 event pairs, 902 based on Foata normal form. 102/12990 useless extension candidates. Maximal degree in co-relation 22712. Up to 4446 conditions per place. [2022-11-18 20:50:31,155 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 190 selfloop transitions, 44 changer transitions 0/426 dead transitions. [2022-11-18 20:50:31,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 426 transitions, 1524 flow [2022-11-18 20:50:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:50:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:50:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4644 transitions. [2022-11-18 20:50:31,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6921013412816691 [2022-11-18 20:50:31,169 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4644 transitions. [2022-11-18 20:50:31,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4644 transitions. [2022-11-18 20:50:31,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:31,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4644 transitions. [2022-11-18 20:50:31,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.0909090909091) internal successors, (4644), 22 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,210 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,213 INFO L175 Difference]: Start difference. First operand has 310 places, 303 transitions, 752 flow. Second operand 22 states and 4644 transitions. [2022-11-18 20:50:31,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 426 transitions, 1524 flow [2022-11-18 20:50:31,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 426 transitions, 1509 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:50:31,249 INFO L231 Difference]: Finished difference. Result has 330 places, 332 transitions, 995 flow [2022-11-18 20:50:31,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=995, PETRI_PLACES=330, PETRI_TRANSITIONS=332} [2022-11-18 20:50:31,252 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 45 predicate places. [2022-11-18 20:50:31,252 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 332 transitions, 995 flow [2022-11-18 20:50:31,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:31,255 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:50:31,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -920795431, now seen corresponding path program 1 times [2022-11-18 20:50:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:31,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96241700] [2022-11-18 20:50:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:31,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:50:31,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:31,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96241700] [2022-11-18 20:50:31,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96241700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:31,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:31,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:31,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146400841] [2022-11-18 20:50:31,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:31,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:50:31,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:31,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:50:31,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:50:31,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-18 20:50:31,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 332 transitions, 995 flow. Second operand has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:31,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-18 20:50:31,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:31,796 INFO L130 PetriNetUnfolder]: 167/2208 cut-off events. [2022-11-18 20:50:31,796 INFO L131 PetriNetUnfolder]: For 253/254 co-relation queries the response was YES. [2022-11-18 20:50:31,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2996 conditions, 2208 events. 167/2208 cut-off events. For 253/254 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19089 event pairs, 22 based on Foata normal form. 18/1984 useless extension candidates. Maximal degree in co-relation 2903. Up to 140 conditions per place. [2022-11-18 20:50:31,814 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 13 selfloop transitions, 8 changer transitions 0/335 dead transitions. [2022-11-18 20:50:31,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 335 transitions, 1044 flow [2022-11-18 20:50:31,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:50:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:50:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1419 transitions. [2022-11-18 20:50:31,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9304918032786885 [2022-11-18 20:50:31,818 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1419 transitions. [2022-11-18 20:50:31,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1419 transitions. [2022-11-18 20:50:31,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:31,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1419 transitions. [2022-11-18 20:50:31,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.8) internal successors, (1419), 5 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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 20:50:31,825 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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 20:50:31,826 INFO L175 Difference]: Start difference. First operand has 330 places, 332 transitions, 995 flow. Second operand 5 states and 1419 transitions. [2022-11-18 20:50:31,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 335 transitions, 1044 flow [2022-11-18 20:50:31,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 335 transitions, 1011 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-18 20:50:31,842 INFO L231 Difference]: Finished difference. Result has 326 places, 332 transitions, 982 flow [2022-11-18 20:50:31,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=982, PETRI_PLACES=326, PETRI_TRANSITIONS=332} [2022-11-18 20:50:31,845 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 41 predicate places. [2022-11-18 20:50:31,845 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 332 transitions, 982 flow [2022-11-18 20:50:31,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:31,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:31,846 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:31,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:50:31,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:31,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1520113578, now seen corresponding path program 1 times [2022-11-18 20:50:31,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:31,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721731381] [2022-11-18 20:50:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:31,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:31,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:31,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721731381] [2022-11-18 20:50:31,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721731381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:50:31,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873694742] [2022-11-18 20:50:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:31,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:31,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:31,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:50:31,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:50:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:32,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:50:32,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:50:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:32,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:50:32,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873694742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:32,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:50:32,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:50:32,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141066693] [2022-11-18 20:50:32,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:32,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:50:32,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:32,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:50:32,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:50:32,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-18 20:50:32,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 332 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:32,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:32,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-18 20:50:32,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:32,843 INFO L130 PetriNetUnfolder]: 165/2190 cut-off events. [2022-11-18 20:50:32,844 INFO L131 PetriNetUnfolder]: For 387/388 co-relation queries the response was YES. [2022-11-18 20:50:32,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3064 conditions, 2190 events. 165/2190 cut-off events. For 387/388 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 18902 event pairs, 5 based on Foata normal form. 18/1969 useless extension candidates. Maximal degree in co-relation 2978. Up to 95 conditions per place. [2022-11-18 20:50:32,866 INFO L137 encePairwiseOnDemand]: 300/305 looper letters, 19 selfloop transitions, 6 changer transitions 0/339 dead transitions. [2022-11-18 20:50:32,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 339 transitions, 1049 flow [2022-11-18 20:50:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:50:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1986 transitions. [2022-11-18 20:50:32,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302107728337237 [2022-11-18 20:50:32,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1986 transitions. [2022-11-18 20:50:32,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1986 transitions. [2022-11-18 20:50:32,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:32,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1986 transitions. [2022-11-18 20:50:32,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 283.7142857142857) internal successors, (1986), 7 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:32,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:32,884 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:32,885 INFO L175 Difference]: Start difference. First operand has 326 places, 332 transitions, 982 flow. Second operand 7 states and 1986 transitions. [2022-11-18 20:50:32,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 339 transitions, 1049 flow [2022-11-18 20:50:32,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 339 transitions, 1037 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:50:32,897 INFO L231 Difference]: Finished difference. Result has 328 places, 331 transitions, 978 flow [2022-11-18 20:50:32,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=978, PETRI_PLACES=328, PETRI_TRANSITIONS=331} [2022-11-18 20:50:32,902 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 43 predicate places. [2022-11-18 20:50:32,902 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 331 transitions, 978 flow [2022-11-18 20:50:32,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:32,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:32,904 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:32,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:50:33,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:33,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash 931876677, now seen corresponding path program 1 times [2022-11-18 20:50:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:33,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582185364] [2022-11-18 20:50:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:33,231 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 20:50:33,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:33,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582185364] [2022-11-18 20:50:33,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582185364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:33,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:33,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:33,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709266190] [2022-11-18 20:50:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:33,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:50:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:33,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:50:33,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:50:33,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 305 [2022-11-18 20:50:33,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 331 transitions, 978 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:33,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:33,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 305 [2022-11-18 20:50:33,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:33,543 INFO L130 PetriNetUnfolder]: 70/1135 cut-off events. [2022-11-18 20:50:33,544 INFO L131 PetriNetUnfolder]: For 108/109 co-relation queries the response was YES. [2022-11-18 20:50:33,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 1135 events. 70/1135 cut-off events. For 108/109 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4768 event pairs, 5 based on Foata normal form. 0/986 useless extension candidates. Maximal degree in co-relation 1382. Up to 38 conditions per place. [2022-11-18 20:50:33,553 INFO L137 encePairwiseOnDemand]: 301/305 looper letters, 10 selfloop transitions, 3 changer transitions 0/304 dead transitions. [2022-11-18 20:50:33,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 304 transitions, 851 flow [2022-11-18 20:50:33,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:50:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:50:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-11-18 20:50:33,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9530054644808743 [2022-11-18 20:50:33,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-11-18 20:50:33,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-11-18 20:50:33,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:33,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-11-18 20:50:33,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:33,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:33,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:33,562 INFO L175 Difference]: Start difference. First operand has 328 places, 331 transitions, 978 flow. Second operand 3 states and 872 transitions. [2022-11-18 20:50:33,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 304 transitions, 851 flow [2022-11-18 20:50:33,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 304 transitions, 767 flow, removed 2 selfloop flow, removed 21 redundant places. [2022-11-18 20:50:33,571 INFO L231 Difference]: Finished difference. Result has 305 places, 301 transitions, 745 flow [2022-11-18 20:50:33,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=745, PETRI_PLACES=305, PETRI_TRANSITIONS=301} [2022-11-18 20:50:33,573 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 20 predicate places. [2022-11-18 20:50:33,573 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 301 transitions, 745 flow [2022-11-18 20:50:33,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:33,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:33,574 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:33,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:50:33,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:33,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash 216499962, now seen corresponding path program 1 times [2022-11-18 20:50:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:33,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065867951] [2022-11-18 20:50:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:37,522 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 20:50:37,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:37,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065867951] [2022-11-18 20:50:37,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065867951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:37,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:37,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:50:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658888254] [2022-11-18 20:50:37,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:37,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:50:37,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:50:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:50:37,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 305 [2022-11-18 20:50:37,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 301 transitions, 745 flow. Second operand has 20 states, 20 states have (on average 210.9) internal successors, (4218), 20 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:37,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:37,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 305 [2022-11-18 20:50:37,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:40,690 INFO L130 PetriNetUnfolder]: 1697/7542 cut-off events. [2022-11-18 20:50:40,690 INFO L131 PetriNetUnfolder]: For 344/348 co-relation queries the response was YES. [2022-11-18 20:50:40,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11292 conditions, 7542 events. 1697/7542 cut-off events. For 344/348 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 70208 event pairs, 1405 based on Foata normal form. 2/6750 useless extension candidates. Maximal degree in co-relation 11275. Up to 2630 conditions per place. [2022-11-18 20:50:40,738 INFO L137 encePairwiseOnDemand]: 282/305 looper letters, 92 selfloop transitions, 34 changer transitions 0/326 dead transitions. [2022-11-18 20:50:40,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 326 transitions, 1063 flow [2022-11-18 20:50:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:50:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:50:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4514 transitions. [2022-11-18 20:50:40,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2022-11-18 20:50:40,748 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4514 transitions. [2022-11-18 20:50:40,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4514 transitions. [2022-11-18 20:50:40,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:40,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4514 transitions. [2022-11-18 20:50:40,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 214.95238095238096) internal successors, (4514), 21 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:40,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:40,771 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:40,771 INFO L175 Difference]: Start difference. First operand has 305 places, 301 transitions, 745 flow. Second operand 21 states and 4514 transitions. [2022-11-18 20:50:40,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 326 transitions, 1063 flow [2022-11-18 20:50:40,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 326 transitions, 1060 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:50:40,781 INFO L231 Difference]: Finished difference. Result has 329 places, 311 transitions, 883 flow [2022-11-18 20:50:40,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=883, PETRI_PLACES=329, PETRI_TRANSITIONS=311} [2022-11-18 20:50:40,782 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 44 predicate places. [2022-11-18 20:50:40,782 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 311 transitions, 883 flow [2022-11-18 20:50:40,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 210.9) internal successors, (4218), 20 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:40,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:40,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:40,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:50:40,785 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:40,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1289873808, now seen corresponding path program 1 times [2022-11-18 20:50:40,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:40,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181143281] [2022-11-18 20:50:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:40,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:41,972 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 20:50:41,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:41,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181143281] [2022-11-18 20:50:41,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181143281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:41,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:41,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:50:41,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211968940] [2022-11-18 20:50:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:41,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:50:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:41,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:50:41,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:50:41,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-18 20:50:41,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 311 transitions, 883 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:41,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:41,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-18 20:50:41,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:44,377 INFO L130 PetriNetUnfolder]: 1729/7723 cut-off events. [2022-11-18 20:50:44,377 INFO L131 PetriNetUnfolder]: For 751/755 co-relation queries the response was YES. [2022-11-18 20:50:44,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11901 conditions, 7723 events. 1729/7723 cut-off events. For 751/755 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 71732 event pairs, 848 based on Foata normal form. 6/6940 useless extension candidates. Maximal degree in co-relation 11879. Up to 2610 conditions per place. [2022-11-18 20:50:44,415 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 115 selfloop transitions, 43 changer transitions 0/352 dead transitions. [2022-11-18 20:50:44,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 352 transitions, 1343 flow [2022-11-18 20:50:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:50:44,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:50:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4363 transitions. [2022-11-18 20:50:44,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6811865729898516 [2022-11-18 20:50:44,423 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4363 transitions. [2022-11-18 20:50:44,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4363 transitions. [2022-11-18 20:50:44,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:44,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4363 transitions. [2022-11-18 20:50:44,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 207.76190476190476) internal successors, (4363), 21 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:44,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:44,445 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:44,445 INFO L175 Difference]: Start difference. First operand has 329 places, 311 transitions, 883 flow. Second operand 21 states and 4363 transitions. [2022-11-18 20:50:44,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 352 transitions, 1343 flow [2022-11-18 20:50:44,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 352 transitions, 1309 flow, removed 2 selfloop flow, removed 13 redundant places. [2022-11-18 20:50:44,456 INFO L231 Difference]: Finished difference. Result has 343 places, 320 transitions, 1033 flow [2022-11-18 20:50:44,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1033, PETRI_PLACES=343, PETRI_TRANSITIONS=320} [2022-11-18 20:50:44,457 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 58 predicate places. [2022-11-18 20:50:44,458 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 320 transitions, 1033 flow [2022-11-18 20:50:44,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:44,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:44,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:50:44,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:44,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash -181584418, now seen corresponding path program 2 times [2022-11-18 20:50:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:44,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299179610] [2022-11-18 20:50:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:44,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:45,635 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 20:50:45,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:45,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299179610] [2022-11-18 20:50:45,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299179610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:45,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:45,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:50:45,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307663339] [2022-11-18 20:50:45,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:45,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:50:45,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:50:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:50:45,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-18 20:50:45,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 320 transitions, 1033 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:45,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:45,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-18 20:50:45,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:48,396 INFO L130 PetriNetUnfolder]: 1725/7713 cut-off events. [2022-11-18 20:50:48,396 INFO L131 PetriNetUnfolder]: For 932/936 co-relation queries the response was YES. [2022-11-18 20:50:48,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12012 conditions, 7713 events. 1725/7713 cut-off events. For 932/936 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 71649 event pairs, 858 based on Foata normal form. 6/6931 useless extension candidates. Maximal degree in co-relation 11983. Up to 2530 conditions per place. [2022-11-18 20:50:48,459 INFO L137 encePairwiseOnDemand]: 285/305 looper letters, 105 selfloop transitions, 37 changer transitions 0/336 dead transitions. [2022-11-18 20:50:48,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 336 transitions, 1369 flow [2022-11-18 20:50:48,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:50:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:50:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3531 transitions. [2022-11-18 20:50:48,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6810028929604629 [2022-11-18 20:50:48,467 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3531 transitions. [2022-11-18 20:50:48,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3531 transitions. [2022-11-18 20:50:48,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:48,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3531 transitions. [2022-11-18 20:50:48,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 207.7058823529412) internal successors, (3531), 17 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:48,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:48,487 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:48,487 INFO L175 Difference]: Start difference. First operand has 343 places, 320 transitions, 1033 flow. Second operand 17 states and 3531 transitions. [2022-11-18 20:50:48,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 336 transitions, 1369 flow [2022-11-18 20:50:48,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 336 transitions, 1339 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-18 20:50:48,500 INFO L231 Difference]: Finished difference. Result has 347 places, 318 transitions, 1061 flow [2022-11-18 20:50:48,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1061, PETRI_PLACES=347, PETRI_TRANSITIONS=318} [2022-11-18 20:50:48,502 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 62 predicate places. [2022-11-18 20:50:48,502 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 318 transitions, 1061 flow [2022-11-18 20:50:48,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:48,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:48,504 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:48,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:50:48,504 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:48,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1910066580, now seen corresponding path program 1 times [2022-11-18 20:50:48,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:48,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631574739] [2022-11-18 20:50:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:48,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:48,581 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 20:50:48,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:48,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631574739] [2022-11-18 20:50:48,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631574739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:48,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:48,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:48,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714278628] [2022-11-18 20:50:48,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:48,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:50:48,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:50:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:50:48,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-18 20:50:48,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 318 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:48,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:48,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-18 20:50:48,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:48,951 INFO L130 PetriNetUnfolder]: 114/1557 cut-off events. [2022-11-18 20:50:48,951 INFO L131 PetriNetUnfolder]: For 209/209 co-relation queries the response was YES. [2022-11-18 20:50:48,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 1557 events. 114/1557 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 7144 event pairs, 31 based on Foata normal form. 0/1400 useless extension candidates. Maximal degree in co-relation 2332. Up to 192 conditions per place. [2022-11-18 20:50:48,966 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 27 selfloop transitions, 4 changer transitions 0/330 dead transitions. [2022-11-18 20:50:48,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 330 transitions, 1153 flow [2022-11-18 20:50:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:50:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:50:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1416 transitions. [2022-11-18 20:50:48,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9285245901639344 [2022-11-18 20:50:48,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1416 transitions. [2022-11-18 20:50:48,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1416 transitions. [2022-11-18 20:50:48,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:48,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1416 transitions. [2022-11-18 20:50:48,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.2) internal successors, (1416), 5 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:48,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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 20:50:48,975 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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 20:50:48,975 INFO L175 Difference]: Start difference. First operand has 347 places, 318 transitions, 1061 flow. Second operand 5 states and 1416 transitions. [2022-11-18 20:50:48,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 330 transitions, 1153 flow [2022-11-18 20:50:48,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 330 transitions, 1079 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-18 20:50:48,983 INFO L231 Difference]: Finished difference. Result has 338 places, 321 transitions, 1023 flow [2022-11-18 20:50:48,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=338, PETRI_TRANSITIONS=321} [2022-11-18 20:50:48,985 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 53 predicate places. [2022-11-18 20:50:48,985 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 321 transitions, 1023 flow [2022-11-18 20:50:48,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:48,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:48,986 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:48,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:50:48,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:48,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash 844561417, now seen corresponding path program 1 times [2022-11-18 20:50:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:48,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740230173] [2022-11-18 20:50:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:48,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:50:49,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:49,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740230173] [2022-11-18 20:50:49,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740230173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:49,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:49,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605364278] [2022-11-18 20:50:49,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:49,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:50:49,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:49,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:50:49,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:50:49,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-18 20:50:49,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 321 transitions, 1023 flow. Second operand has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:49,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:49,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-18 20:50:49,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:49,395 INFO L130 PetriNetUnfolder]: 110/1533 cut-off events. [2022-11-18 20:50:49,395 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2022-11-18 20:50:49,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 1533 events. 110/1533 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 6988 event pairs, 10 based on Foata normal form. 20/1446 useless extension candidates. Maximal degree in co-relation 2327. Up to 80 conditions per place. [2022-11-18 20:50:49,411 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 16 selfloop transitions, 8 changer transitions 0/323 dead transitions. [2022-11-18 20:50:49,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 323 transitions, 1077 flow [2022-11-18 20:50:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:50:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:50:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1403 transitions. [2022-11-18 20:50:49,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.92 [2022-11-18 20:50:49,413 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1403 transitions. [2022-11-18 20:50:49,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1403 transitions. [2022-11-18 20:50:49,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:49,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1403 transitions. [2022-11-18 20:50:49,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:49,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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 20:50:49,419 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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 20:50:49,419 INFO L175 Difference]: Start difference. First operand has 338 places, 321 transitions, 1023 flow. Second operand 5 states and 1403 transitions. [2022-11-18 20:50:49,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 323 transitions, 1077 flow [2022-11-18 20:50:49,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 323 transitions, 1075 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:50:49,428 INFO L231 Difference]: Finished difference. Result has 340 places, 320 transitions, 1037 flow [2022-11-18 20:50:49,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1037, PETRI_PLACES=340, PETRI_TRANSITIONS=320} [2022-11-18 20:50:49,430 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 55 predicate places. [2022-11-18 20:50:49,430 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 320 transitions, 1037 flow [2022-11-18 20:50:49,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:49,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:49,431 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:49,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:50:49,432 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash 411600950, now seen corresponding path program 1 times [2022-11-18 20:50:49,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:49,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525339935] [2022-11-18 20:50:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:49,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:49,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525339935] [2022-11-18 20:50:49,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525339935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:50:49,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623787274] [2022-11-18 20:50:49,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:49,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:50:49,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:49,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:50:49,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:50:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:49,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:50:49,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:50:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:49,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:50:49,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623787274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:49,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:50:49,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:50:49,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243749906] [2022-11-18 20:50:49,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:49,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:50:49,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:49,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:50:49,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:50:49,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-18 20:50:49,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 320 transitions, 1037 flow. Second operand has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:49,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:49,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-18 20:50:49,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:50,137 INFO L130 PetriNetUnfolder]: 106/1509 cut-off events. [2022-11-18 20:50:50,138 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2022-11-18 20:50:50,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1509 events. 106/1509 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 6828 event pairs, 3 based on Foata normal form. 20/1422 useless extension candidates. Maximal degree in co-relation 2322. Up to 84 conditions per place. [2022-11-18 20:50:50,152 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 23 selfloop transitions, 6 changer transitions 0/328 dead transitions. [2022-11-18 20:50:50,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 328 transitions, 1117 flow [2022-11-18 20:50:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:50:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-11-18 20:50:50,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9194379391100702 [2022-11-18 20:50:50,156 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-11-18 20:50:50,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-11-18 20:50:50,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:50,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-11-18 20:50:50,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:50,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:50,165 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:50,165 INFO L175 Difference]: Start difference. First operand has 340 places, 320 transitions, 1037 flow. Second operand 7 states and 1963 transitions. [2022-11-18 20:50:50,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 328 transitions, 1117 flow [2022-11-18 20:50:50,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 328 transitions, 1105 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:50:50,175 INFO L231 Difference]: Finished difference. Result has 341 places, 318 transitions, 1029 flow [2022-11-18 20:50:50,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1029, PETRI_PLACES=341, PETRI_TRANSITIONS=318} [2022-11-18 20:50:50,176 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 56 predicate places. [2022-11-18 20:50:50,177 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 318 transitions, 1029 flow [2022-11-18 20:50:50,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:50,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:50,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:50,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:50:50,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b5da70-08d3-48d0-817a-4dc88118221e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:50:50,388 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1116102275, now seen corresponding path program 1 times [2022-11-18 20:50:50,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:50,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165347116] [2022-11-18 20:50:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:51,594 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 20:50:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:51,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165347116] [2022-11-18 20:50:51,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165347116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:51,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:51,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 20:50:51,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468850212] [2022-11-18 20:50:51,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:51,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:50:51,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:50:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:50:51,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 305 [2022-11-18 20:50:51,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 318 transitions, 1029 flow. Second operand has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:51,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:51,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 305 [2022-11-18 20:50:51,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:54,003 INFO L130 PetriNetUnfolder]: 1764/7867 cut-off events. [2022-11-18 20:50:54,003 INFO L131 PetriNetUnfolder]: For 1106/1110 co-relation queries the response was YES. [2022-11-18 20:50:54,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12469 conditions, 7867 events. 1764/7867 cut-off events. For 1106/1110 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 70689 event pairs, 1362 based on Foata normal form. 2/7158 useless extension candidates. Maximal degree in co-relation 12436. Up to 2758 conditions per place. [2022-11-18 20:50:54,044 INFO L137 encePairwiseOnDemand]: 289/305 looper letters, 85 selfloop transitions, 29 changer transitions 0/326 dead transitions. [2022-11-18 20:50:54,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 326 transitions, 1277 flow [2022-11-18 20:50:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:50:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:50:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3341 transitions. [2022-11-18 20:50:54,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7302732240437159 [2022-11-18 20:50:54,049 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3341 transitions. [2022-11-18 20:50:54,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3341 transitions. [2022-11-18 20:50:54,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:54,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3341 transitions. [2022-11-18 20:50:54,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 222.73333333333332) internal successors, (3341), 15 states have internal predecessors, (3341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:54,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:54,063 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:54,063 INFO L175 Difference]: Start difference. First operand has 341 places, 318 transitions, 1029 flow. Second operand 15 states and 3341 transitions. [2022-11-18 20:50:54,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 326 transitions, 1277 flow [2022-11-18 20:50:54,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 326 transitions, 1262 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 20:50:54,075 INFO L231 Difference]: Finished difference. Result has 353 places, 321 transitions, 1108 flow [2022-11-18 20:50:54,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1108, PETRI_PLACES=353, PETRI_TRANSITIONS=321} [2022-11-18 20:50:54,076 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 68 predicate places. [2022-11-18 20:50:54,076 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 321 transitions, 1108 flow [2022-11-18 20:50:54,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:54,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:54,078 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:54,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:50:54,078 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:50:54,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:54,079 INFO L85 PathProgramCache]: Analyzing trace with hash -978294637, now seen corresponding path program 1 times [2022-11-18 20:50:54,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:54,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532278429] [2022-11-18 20:50:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:54,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:00,642 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 20:51:00,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:00,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532278429] [2022-11-18 20:51:00,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532278429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:00,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:00,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:51:00,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862553453] [2022-11-18 20:51:00,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:00,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:51:00,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:51:00,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:51:00,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-18 20:51:00,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 321 transitions, 1108 flow. Second operand has 22 states, 22 states have (on average 208.5909090909091) internal successors, (4589), 22 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:00,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:00,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-18 20:51:00,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:05,740 INFO L130 PetriNetUnfolder]: 1616/7660 cut-off events. [2022-11-18 20:51:05,740 INFO L131 PetriNetUnfolder]: For 1099/1103 co-relation queries the response was YES. [2022-11-18 20:51:05,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12107 conditions, 7660 events. 1616/7660 cut-off events. For 1099/1103 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 70214 event pairs, 1306 based on Foata normal form. 8/6985 useless extension candidates. Maximal degree in co-relation 12072. Up to 2465 conditions per place. [2022-11-18 20:51:05,804 INFO L137 encePairwiseOnDemand]: 284/305 looper letters, 93 selfloop transitions, 46 changer transitions 0/343 dead transitions. [2022-11-18 20:51:05,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 343 transitions, 1455 flow [2022-11-18 20:51:05,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:51:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 20:51:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4863 transitions. [2022-11-18 20:51:05,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6932287954383464 [2022-11-18 20:51:05,811 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4863 transitions. [2022-11-18 20:51:05,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4863 transitions. [2022-11-18 20:51:05,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:05,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4863 transitions. [2022-11-18 20:51:05,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 211.43478260869566) internal successors, (4863), 23 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:05,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 305.0) internal successors, (7320), 24 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:05,831 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 305.0) internal successors, (7320), 24 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:05,832 INFO L175 Difference]: Start difference. First operand has 353 places, 321 transitions, 1108 flow. Second operand 23 states and 4863 transitions. [2022-11-18 20:51:05,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 343 transitions, 1455 flow [2022-11-18 20:51:05,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 343 transitions, 1428 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-18 20:51:05,844 INFO L231 Difference]: Finished difference. Result has 367 places, 323 transitions, 1213 flow [2022-11-18 20:51:05,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1213, PETRI_PLACES=367, PETRI_TRANSITIONS=323} [2022-11-18 20:51:05,846 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 82 predicate places. [2022-11-18 20:51:05,846 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 323 transitions, 1213 flow [2022-11-18 20:51:05,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 208.5909090909091) internal successors, (4589), 22 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:05,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:05,848 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:51:05,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:51:05,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:51:05,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:05,849 INFO L85 PathProgramCache]: Analyzing trace with hash 960879483, now seen corresponding path program 2 times [2022-11-18 20:51:05,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:05,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417390263] [2022-11-18 20:51:05,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:05,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:07,209 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 20:51:07,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:07,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417390263] [2022-11-18 20:51:07,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417390263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:07,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:07,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:51:07,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776293479] [2022-11-18 20:51:07,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:07,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:51:07,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:51:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:51:07,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 305 [2022-11-18 20:51:07,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 323 transitions, 1213 flow. Second operand has 19 states, 19 states have (on average 215.6315789473684) internal successors, (4097), 19 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:07,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:07,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 305 [2022-11-18 20:51:07,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:09,338 INFO L130 PetriNetUnfolder]: 1608/7621 cut-off events. [2022-11-18 20:51:09,338 INFO L131 PetriNetUnfolder]: For 1310/1314 co-relation queries the response was YES. [2022-11-18 20:51:09,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12144 conditions, 7621 events. 1608/7621 cut-off events. For 1310/1314 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 70106 event pairs, 783 based on Foata normal form. 3/6942 useless extension candidates. Maximal degree in co-relation 12107. Up to 2417 conditions per place. [2022-11-18 20:51:09,382 INFO L137 encePairwiseOnDemand]: 288/305 looper letters, 89 selfloop transitions, 30 changer transitions 0/330 dead transitions. [2022-11-18 20:51:09,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 330 transitions, 1469 flow [2022-11-18 20:51:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:51:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:51:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3073 transitions. [2022-11-18 20:51:09,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.719672131147541 [2022-11-18 20:51:09,387 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3073 transitions. [2022-11-18 20:51:09,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3073 transitions. [2022-11-18 20:51:09,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:09,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3073 transitions. [2022-11-18 20:51:09,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 219.5) internal successors, (3073), 14 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:09,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:09,398 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:09,399 INFO L175 Difference]: Start difference. First operand has 367 places, 323 transitions, 1213 flow. Second operand 14 states and 3073 transitions. [2022-11-18 20:51:09,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 330 transitions, 1469 flow [2022-11-18 20:51:09,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 330 transitions, 1389 flow, removed 6 selfloop flow, removed 23 redundant places. [2022-11-18 20:51:09,412 INFO L231 Difference]: Finished difference. Result has 355 places, 320 transitions, 1181 flow [2022-11-18 20:51:09,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1181, PETRI_PLACES=355, PETRI_TRANSITIONS=320} [2022-11-18 20:51:09,413 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 70 predicate places. [2022-11-18 20:51:09,413 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 320 transitions, 1181 flow [2022-11-18 20:51:09,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 215.6315789473684) internal successors, (4097), 19 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:09,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:09,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:51:09,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:51:09,415 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:51:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:09,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1464480890, now seen corresponding path program 1 times [2022-11-18 20:51:09,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:09,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520214076] [2022-11-18 20:51:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:09,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:12,470 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 20:51:12,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:12,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520214076] [2022-11-18 20:51:12,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520214076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:12,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:12,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-18 20:51:12,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343939012] [2022-11-18 20:51:12,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:12,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:51:12,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:12,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:51:12,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:51:12,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 305 [2022-11-18 20:51:12,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 320 transitions, 1181 flow. Second operand has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:12,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:12,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 305 [2022-11-18 20:51:12,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:18,342 INFO L130 PetriNetUnfolder]: 2445/10458 cut-off events. [2022-11-18 20:51:18,342 INFO L131 PetriNetUnfolder]: For 1766/1770 co-relation queries the response was YES. [2022-11-18 20:51:18,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17020 conditions, 10458 events. 2445/10458 cut-off events. For 1766/1770 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 102855 event pairs, 1950 based on Foata normal form. 2/9441 useless extension candidates. Maximal degree in co-relation 16990. Up to 3725 conditions per place. [2022-11-18 20:51:18,395 INFO L137 encePairwiseOnDemand]: 264/305 looper letters, 135 selfloop transitions, 70 changer transitions 0/388 dead transitions. [2022-11-18 20:51:18,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 388 transitions, 1876 flow [2022-11-18 20:51:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:51:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:51:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 7525 transitions. [2022-11-18 20:51:18,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6492666091458154 [2022-11-18 20:51:18,404 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 7525 transitions. [2022-11-18 20:51:18,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 7525 transitions. [2022-11-18 20:51:18,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:18,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 7525 transitions. [2022-11-18 20:51:18,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 198.02631578947367) internal successors, (7525), 38 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:18,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 305.0) internal successors, (11895), 39 states have internal predecessors, (11895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:18,432 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 305.0) internal successors, (11895), 39 states have internal predecessors, (11895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:18,433 INFO L175 Difference]: Start difference. First operand has 355 places, 320 transitions, 1181 flow. Second operand 38 states and 7525 transitions. [2022-11-18 20:51:18,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 388 transitions, 1876 flow [2022-11-18 20:51:18,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 388 transitions, 1816 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-11-18 20:51:18,449 INFO L231 Difference]: Finished difference. Result has 394 places, 354 transitions, 1588 flow [2022-11-18 20:51:18,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1588, PETRI_PLACES=394, PETRI_TRANSITIONS=354} [2022-11-18 20:51:18,450 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 109 predicate places. [2022-11-18 20:51:18,450 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 354 transitions, 1588 flow [2022-11-18 20:51:18,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:18,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:18,452 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:51:18,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:51:18,452 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:51:18,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1845733481, now seen corresponding path program 1 times [2022-11-18 20:51:18,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:18,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233483348] [2022-11-18 20:51:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:18,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:19,950 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 20:51:19,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:19,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233483348] [2022-11-18 20:51:19,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233483348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:19,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:19,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 20:51:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861497887] [2022-11-18 20:51:19,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:19,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:51:19,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:51:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:51:19,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-18 20:51:19,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 354 transitions, 1588 flow. Second operand has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:19,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:19,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-18 20:51:19,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:28,668 INFO L130 PetriNetUnfolder]: 6086/20453 cut-off events. [2022-11-18 20:51:28,668 INFO L131 PetriNetUnfolder]: For 3593/3593 co-relation queries the response was YES. [2022-11-18 20:51:28,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36542 conditions, 20453 events. 6086/20453 cut-off events. For 3593/3593 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 209165 event pairs, 1096 based on Foata normal form. 124/19116 useless extension candidates. Maximal degree in co-relation 36497. Up to 3022 conditions per place. [2022-11-18 20:51:28,973 INFO L137 encePairwiseOnDemand]: 274/305 looper letters, 405 selfloop transitions, 141 changer transitions 0/747 dead transitions. [2022-11-18 20:51:28,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 747 transitions, 3784 flow [2022-11-18 20:51:28,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:51:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:51:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8726 transitions. [2022-11-18 20:51:28,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7152459016393443 [2022-11-18 20:51:28,985 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8726 transitions. [2022-11-18 20:51:28,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8726 transitions. [2022-11-18 20:51:28,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:28,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8726 transitions. [2022-11-18 20:51:29,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 218.15) internal successors, (8726), 40 states have internal predecessors, (8726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:29,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:29,015 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:29,015 INFO L175 Difference]: Start difference. First operand has 394 places, 354 transitions, 1588 flow. Second operand 40 states and 8726 transitions. [2022-11-18 20:51:29,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 747 transitions, 3784 flow [2022-11-18 20:51:29,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 747 transitions, 3517 flow, removed 87 selfloop flow, removed 20 redundant places. [2022-11-18 20:51:29,053 INFO L231 Difference]: Finished difference. Result has 424 places, 455 transitions, 2187 flow [2022-11-18 20:51:29,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2187, PETRI_PLACES=424, PETRI_TRANSITIONS=455} [2022-11-18 20:51:29,054 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 139 predicate places. [2022-11-18 20:51:29,054 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 455 transitions, 2187 flow [2022-11-18 20:51:29,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:29,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:29,055 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:51:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:51:29,055 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:51:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1270584804, now seen corresponding path program 1 times [2022-11-18 20:51:29,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:29,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085194001] [2022-11-18 20:51:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:29,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:32,427 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 20:51:32,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:32,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085194001] [2022-11-18 20:51:32,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085194001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:32,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:32,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-18 20:51:32,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411175771] [2022-11-18 20:51:32,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:32,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:51:32,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:32,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:51:32,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:51:32,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 305 [2022-11-18 20:51:32,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 455 transitions, 2187 flow. Second operand has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:32,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:32,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 305 [2022-11-18 20:51:32,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:42,653 INFO L130 PetriNetUnfolder]: 6930/22304 cut-off events. [2022-11-18 20:51:42,653 INFO L131 PetriNetUnfolder]: For 8605/8805 co-relation queries the response was YES. [2022-11-18 20:51:42,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44125 conditions, 22304 events. 6930/22304 cut-off events. For 8605/8805 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 233727 event pairs, 3189 based on Foata normal form. 24/20353 useless extension candidates. Maximal degree in co-relation 44071. Up to 10493 conditions per place. [2022-11-18 20:51:42,848 INFO L137 encePairwiseOnDemand]: 265/305 looper letters, 257 selfloop transitions, 96 changer transitions 0/541 dead transitions. [2022-11-18 20:51:42,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 541 transitions, 3212 flow [2022-11-18 20:51:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:51:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:51:42,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 7199 transitions. [2022-11-18 20:51:42,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6211389128559103 [2022-11-18 20:51:42,858 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 7199 transitions. [2022-11-18 20:51:42,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 7199 transitions. [2022-11-18 20:51:42,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:42,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 7199 transitions. [2022-11-18 20:51:42,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 189.44736842105263) internal successors, (7199), 38 states have internal predecessors, (7199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:42,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 305.0) internal successors, (11895), 39 states have internal predecessors, (11895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:42,885 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 305.0) internal successors, (11895), 39 states have internal predecessors, (11895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:42,885 INFO L175 Difference]: Start difference. First operand has 424 places, 455 transitions, 2187 flow. Second operand 38 states and 7199 transitions. [2022-11-18 20:51:42,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 541 transitions, 3212 flow [2022-11-18 20:51:42,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 541 transitions, 3122 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-11-18 20:51:42,964 INFO L231 Difference]: Finished difference. Result has 465 places, 473 transitions, 2517 flow [2022-11-18 20:51:42,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2517, PETRI_PLACES=465, PETRI_TRANSITIONS=473} [2022-11-18 20:51:42,966 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 180 predicate places. [2022-11-18 20:51:42,966 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 473 transitions, 2517 flow [2022-11-18 20:51:42,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:42,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:42,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:51:42,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:51:42,968 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:51:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1994402645, now seen corresponding path program 1 times [2022-11-18 20:51:42,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:42,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307107695] [2022-11-18 20:51:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:42,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:46,769 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 20:51:46,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:46,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307107695] [2022-11-18 20:51:46,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307107695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:46,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:46,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-18 20:51:46,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795645593] [2022-11-18 20:51:46,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:46,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:51:46,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:46,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:51:46,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:51:46,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 305 [2022-11-18 20:51:46,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 473 transitions, 2517 flow. Second operand has 32 states, 32 states have (on average 186.21875) internal successors, (5959), 32 states have internal predecessors, (5959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:46,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:51:46,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 305 [2022-11-18 20:51:46,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:51:58,676 INFO L130 PetriNetUnfolder]: 7013/24144 cut-off events. [2022-11-18 20:51:58,676 INFO L131 PetriNetUnfolder]: For 11734/12064 co-relation queries the response was YES. [2022-11-18 20:51:58,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47668 conditions, 24144 events. 7013/24144 cut-off events. For 11734/12064 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 256546 event pairs, 1780 based on Foata normal form. 82/22010 useless extension candidates. Maximal degree in co-relation 47603. Up to 5704 conditions per place. [2022-11-18 20:51:58,933 INFO L137 encePairwiseOnDemand]: 259/305 looper letters, 272 selfloop transitions, 133 changer transitions 0/593 dead transitions. [2022-11-18 20:51:58,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 593 transitions, 3726 flow [2022-11-18 20:51:58,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:51:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:51:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 7608 transitions. [2022-11-18 20:51:58,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6236065573770492 [2022-11-18 20:51:58,942 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 7608 transitions. [2022-11-18 20:51:58,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 7608 transitions. [2022-11-18 20:51:58,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:51:58,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 7608 transitions. [2022-11-18 20:51:58,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 190.2) internal successors, (7608), 40 states have internal predecessors, (7608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,967 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,967 INFO L175 Difference]: Start difference. First operand has 465 places, 473 transitions, 2517 flow. Second operand 40 states and 7608 transitions. [2022-11-18 20:51:58,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 593 transitions, 3726 flow [2022-11-18 20:51:59,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 593 transitions, 3577 flow, removed 14 selfloop flow, removed 26 redundant places. [2022-11-18 20:51:59,229 INFO L231 Difference]: Finished difference. Result has 484 places, 490 transitions, 2890 flow [2022-11-18 20:51:59,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2890, PETRI_PLACES=484, PETRI_TRANSITIONS=490} [2022-11-18 20:51:59,231 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 199 predicate places. [2022-11-18 20:51:59,231 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 490 transitions, 2890 flow [2022-11-18 20:51:59,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 186.21875) internal successors, (5959), 32 states have internal predecessors, (5959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:59,232 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:51:59,232 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:51:59,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:51:59,233 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:51:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:59,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1986248639, now seen corresponding path program 2 times [2022-11-18 20:51:59,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:59,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793219072] [2022-11-18 20:51:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:59,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:01,315 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 20:52:01,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:01,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793219072] [2022-11-18 20:52:01,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793219072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:01,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:01,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:52:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875970441] [2022-11-18 20:52:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:52:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:52:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:52:01,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 305 [2022-11-18 20:52:01,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 490 transitions, 2890 flow. Second operand has 25 states, 25 states have (on average 204.56) internal successors, (5114), 25 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:01,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:01,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 305 [2022-11-18 20:52:01,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:12,565 INFO L130 PetriNetUnfolder]: 7327/24565 cut-off events. [2022-11-18 20:52:12,565 INFO L131 PetriNetUnfolder]: For 17495/17723 co-relation queries the response was YES. [2022-11-18 20:52:13,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51479 conditions, 24565 events. 7327/24565 cut-off events. For 17495/17723 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 261367 event pairs, 1325 based on Foata normal form. 181/22813 useless extension candidates. Maximal degree in co-relation 51408. Up to 2637 conditions per place. [2022-11-18 20:52:13,185 INFO L137 encePairwiseOnDemand]: 276/305 looper letters, 425 selfloop transitions, 197 changer transitions 0/821 dead transitions. [2022-11-18 20:52:13,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 821 transitions, 5273 flow [2022-11-18 20:52:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:52:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 20:52:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 8319 transitions. [2022-11-18 20:52:13,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6993694829760404 [2022-11-18 20:52:13,197 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 8319 transitions. [2022-11-18 20:52:13,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 8319 transitions. [2022-11-18 20:52:13,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:13,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 8319 transitions. [2022-11-18 20:52:13,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 213.30769230769232) internal successors, (8319), 39 states have internal predecessors, (8319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:13,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 305.0) internal successors, (12200), 40 states have internal predecessors, (12200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:13,226 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 305.0) internal successors, (12200), 40 states have internal predecessors, (12200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:13,226 INFO L175 Difference]: Start difference. First operand has 484 places, 490 transitions, 2890 flow. Second operand 39 states and 8319 transitions. [2022-11-18 20:52:13,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 821 transitions, 5273 flow [2022-11-18 20:52:13,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 821 transitions, 5099 flow, removed 8 selfloop flow, removed 33 redundant places. [2022-11-18 20:52:13,405 INFO L231 Difference]: Finished difference. Result has 498 places, 559 transitions, 3789 flow [2022-11-18 20:52:13,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2711, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3789, PETRI_PLACES=498, PETRI_TRANSITIONS=559} [2022-11-18 20:52:13,406 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 213 predicate places. [2022-11-18 20:52:13,406 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 559 transitions, 3789 flow [2022-11-18 20:52:13,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 204.56) internal successors, (5114), 25 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:13,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:13,407 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:52:13,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:52:13,408 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:52:13,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:13,408 INFO L85 PathProgramCache]: Analyzing trace with hash -714531473, now seen corresponding path program 1 times [2022-11-18 20:52:13,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:13,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476346276] [2022-11-18 20:52:13,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:13,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:15,805 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 20:52:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:15,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476346276] [2022-11-18 20:52:15,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476346276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:15,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:15,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 20:52:15,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591813929] [2022-11-18 20:52:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:15,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:52:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:52:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:52:15,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-18 20:52:15,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 559 transitions, 3789 flow. Second operand has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:15,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:15,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-18 20:52:15,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:27,235 INFO L130 PetriNetUnfolder]: 7780/28295 cut-off events. [2022-11-18 20:52:27,235 INFO L131 PetriNetUnfolder]: For 29047/29510 co-relation queries the response was YES. [2022-11-18 20:52:27,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61071 conditions, 28295 events. 7780/28295 cut-off events. For 29047/29510 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 316423 event pairs, 4596 based on Foata normal form. 68/26010 useless extension candidates. Maximal degree in co-relation 60992. Up to 9828 conditions per place. [2022-11-18 20:52:27,942 INFO L137 encePairwiseOnDemand]: 269/305 looper letters, 347 selfloop transitions, 120 changer transitions 0/744 dead transitions. [2022-11-18 20:52:27,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 744 transitions, 5697 flow [2022-11-18 20:52:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:52:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:52:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7707 transitions. [2022-11-18 20:52:27,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7019125683060109 [2022-11-18 20:52:27,953 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7707 transitions. [2022-11-18 20:52:27,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7707 transitions. [2022-11-18 20:52:27,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:27,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7707 transitions. [2022-11-18 20:52:27,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 214.08333333333334) internal successors, (7707), 36 states have internal predecessors, (7707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:27,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:27,983 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:27,983 INFO L175 Difference]: Start difference. First operand has 498 places, 559 transitions, 3789 flow. Second operand 36 states and 7707 transitions. [2022-11-18 20:52:27,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 744 transitions, 5697 flow [2022-11-18 20:52:28,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 744 transitions, 5603 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-11-18 20:52:28,294 INFO L231 Difference]: Finished difference. Result has 537 places, 616 transitions, 4680 flow [2022-11-18 20:52:28,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3701, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4680, PETRI_PLACES=537, PETRI_TRANSITIONS=616} [2022-11-18 20:52:28,295 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 252 predicate places. [2022-11-18 20:52:28,295 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 616 transitions, 4680 flow [2022-11-18 20:52:28,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:28,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:28,297 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:52:28,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:52:28,297 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-18 20:52:28,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash -675638350, now seen corresponding path program 1 times [2022-11-18 20:52:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:28,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776182970] [2022-11-18 20:52:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:30,034 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 20:52:30,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:30,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776182970] [2022-11-18 20:52:30,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776182970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:30,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:30,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:52:30,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971227964] [2022-11-18 20:52:30,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:30,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:52:30,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:30,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:52:30,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:52:30,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-18 20:52:30,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 616 transitions, 4680 flow. Second operand has 22 states, 22 states have (on average 208.9090909090909) internal successors, (4596), 22 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:30,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:30,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-18 20:52:30,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand