./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8 --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 fd7555e2b4abe63429c1be22a8b482f63bbf931ffcb895a158eac84b789e7c88 --- 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-e04fb08 [2022-11-16 12:46:46,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:46:46,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:46:46,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:46:46,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:46:46,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:46:46,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:46:46,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:46:46,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:46:46,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:46:46,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:46:46,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:46:46,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:46:46,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:46:46,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:46:46,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:46:46,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:46:46,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:46:46,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:46:46,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:46:46,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:46:46,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:46:46,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:46:46,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:46:46,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:46:46,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:46:46,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:46:46,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:46:46,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:46:46,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:46:46,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:46:46,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:46:46,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:46:46,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:46:46,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:46:46,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:46:46,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:46:46,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:46:46,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:46:46,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:46:46,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:46:46,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:46:46,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:46:46,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:46:46,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:46:46,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:46:46,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:46:46,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:46:46,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:46:46,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:46:46,873 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:46:46,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:46:46,875 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:46:46,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:46:46,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:46:46,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:46:46,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:46:46,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:46:46,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:46:46,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:46:46,877 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:46:46,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:46:46,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:46:46,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:46:46,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:46:46,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:46:46,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:46:46,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:46:46,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:46:46,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:46:46,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:46:46,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:46:46,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:46:46,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:46:46,883 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:46:46,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:46:46,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:46:46,884 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_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd7555e2b4abe63429c1be22a8b482f63bbf931ffcb895a158eac84b789e7c88 [2022-11-16 12:46:47,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:46:47,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:46:47,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:46:47,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:46:47,327 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:46:47,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i [2022-11-16 12:46:47,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/data/d96e30972/b365156340e14a1d9969214db65eb7a2/FLAGcc95f8852 [2022-11-16 12:46:48,206 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:46:48,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i [2022-11-16 12:46:48,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/data/d96e30972/b365156340e14a1d9969214db65eb7a2/FLAGcc95f8852 [2022-11-16 12:46:48,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/data/d96e30972/b365156340e14a1d9969214db65eb7a2 [2022-11-16 12:46:48,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:46:48,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:46:48,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:46:48,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:46:48,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:46:48,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:46:48" (1/1) ... [2022-11-16 12:46:48,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27228e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:48, skipping insertion in model container [2022-11-16 12:46:48,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:46:48" (1/1) ... [2022-11-16 12:46:48,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:46:48,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:46:48,948 WARN L229 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_2d97ff80-94f3-45f2-8c44-261978ea2bb3/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i[30190,30203] [2022-11-16 12:46:48,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:46:48,973 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:46:49,018 WARN L229 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_2d97ff80-94f3-45f2-8c44-261978ea2bb3/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i[30190,30203] [2022-11-16 12:46:49,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:46:49,061 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:46:49,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49 WrapperNode [2022-11-16 12:46:49,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:46:49,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:46:49,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:46:49,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:46:49,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,127 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-11-16 12:46:49,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:46:49,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:46:49,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:46:49,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:46:49,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,158 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:46:49,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:46:49,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:46:49,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:46:49,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (1/1) ... [2022-11-16 12:46:49,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:46:49,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:49,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:46:49,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:46:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:46:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-16 12:46:49,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-16 12:46:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:46:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:46:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:46:49,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:46:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:46:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-16 12:46:49,291 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-16 12:46:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:46:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:46:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:46:49,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:46:49,293 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:46:49,450 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:46:49,453 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:46:49,744 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:46:49,753 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:46:49,754 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:46:49,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:46:49 BoogieIcfgContainer [2022-11-16 12:46:49,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:46:49,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:46:49,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:46:49,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:46:49,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:46:48" (1/3) ... [2022-11-16 12:46:49,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e58257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:46:49, skipping insertion in model container [2022-11-16 12:46:49,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:49" (2/3) ... [2022-11-16 12:46:49,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e58257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:46:49, skipping insertion in model container [2022-11-16 12:46:49,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:46:49" (3/3) ... [2022-11-16 12:46:49,771 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-20.i [2022-11-16 12:46:49,783 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:46:49,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:46:49,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:46:49,799 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:46:49,958 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:46:50,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-11-16 12:46:50,193 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-11-16 12:46:50,194 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 12:46:50,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 236 events. 24/236 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 747 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2022-11-16 12:46:50,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 106 transitions, 234 flow [2022-11-16 12:46:50,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 106 transitions, 234 flow [2022-11-16 12:46:50,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:46:50,264 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;@66295dec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:46:50,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 12:46:50,306 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-11-16 12:46:50,307 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:46:50,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:50,308 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] [2022-11-16 12:46:50,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:50,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:50,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1743683162, now seen corresponding path program 1 times [2022-11-16 12:46:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:50,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407713752] [2022-11-16 12:46:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:50,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:50,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:50,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407713752] [2022-11-16 12:46:50,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407713752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:50,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:50,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:46:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388859928] [2022-11-16 12:46:50,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:50,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:46:50,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:51,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:46:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:46:51,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 106 [2022-11-16 12:46:51,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:51,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:51,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 106 [2022-11-16 12:46:51,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:51,315 INFO L130 PetriNetUnfolder]: 2/140 cut-off events. [2022-11-16 12:46:51,316 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:46:51,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 140 events. 2/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 18/141 useless extension candidates. Maximal degree in co-relation 33. Up to 30 conditions per place. [2022-11-16 12:46:51,320 INFO L137 encePairwiseOnDemand]: 85/106 looper letters, 33 selfloop transitions, 9 changer transitions 14/110 dead transitions. [2022-11-16 12:46:51,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 110 transitions, 342 flow [2022-11-16 12:46:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:46:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:46:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2022-11-16 12:46:51,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7132075471698113 [2022-11-16 12:46:51,361 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2022-11-16 12:46:51,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2022-11-16 12:46:51,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:51,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2022-11-16 12:46:51,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:51,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:51,393 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:51,395 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 234 flow. Second operand 5 states and 378 transitions. [2022-11-16 12:46:51,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 110 transitions, 342 flow [2022-11-16 12:46:51,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 110 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:46:51,413 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 227 flow [2022-11-16 12:46:51,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2022-11-16 12:46:51,424 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 2 predicate places. [2022-11-16 12:46:51,425 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 227 flow [2022-11-16 12:46:51,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:51,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:51,428 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:51,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:46:51,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash 888287988, now seen corresponding path program 1 times [2022-11-16 12:46:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:51,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068279227] [2022-11-16 12:46:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:51,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:46:51,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:46:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:46:51,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:46:51,582 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:46:51,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-16 12:46:51,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-16 12:46:51,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-16 12:46:51,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-16 12:46:51,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-16 12:46:51,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-16 12:46:51,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-16 12:46:51,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-16 12:46:51,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-16 12:46:51,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-16 12:46:51,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:46:51,592 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 12:46:51,596 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:46:51,596 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:46:51,639 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-16 12:46:51,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-11-16 12:46:51,819 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-11-16 12:46:51,820 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-16 12:46:51,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 802 events. 107/802 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4085 event pairs, 2 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2022-11-16 12:46:51,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 124 transitions, 296 flow [2022-11-16 12:46:51,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 124 transitions, 296 flow [2022-11-16 12:46:51,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:46:51,844 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66295dec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:46:51,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 12:46:51,852 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-11-16 12:46:51,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:46:51,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:51,853 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] [2022-11-16 12:46:51,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:51,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2118885228, now seen corresponding path program 1 times [2022-11-16 12:46:51,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:51,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544325701] [2022-11-16 12:46:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:51,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:51,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:51,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544325701] [2022-11-16 12:46:51,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544325701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:51,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:51,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:46:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901685568] [2022-11-16 12:46:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:51,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:46:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:46:51,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:46:51,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-11-16 12:46:51,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 124 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:51,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:51,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-11-16 12:46:51,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:52,366 INFO L130 PetriNetUnfolder]: 58/745 cut-off events. [2022-11-16 12:46:52,366 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-11-16 12:46:52,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 745 events. 58/745 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4081 event pairs, 0 based on Foata normal form. 244/867 useless extension candidates. Maximal degree in co-relation 595. Up to 212 conditions per place. [2022-11-16 12:46:52,371 INFO L137 encePairwiseOnDemand]: 102/124 looper letters, 59 selfloop transitions, 10 changer transitions 8/143 dead transitions. [2022-11-16 12:46:52,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 143 transitions, 498 flow [2022-11-16 12:46:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:46:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:46:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2022-11-16 12:46:52,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7306451612903225 [2022-11-16 12:46:52,375 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2022-11-16 12:46:52,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2022-11-16 12:46:52,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:52,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2022-11-16 12:46:52,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:52,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:52,380 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:52,380 INFO L175 Difference]: Start difference. First operand has 119 places, 124 transitions, 296 flow. Second operand 5 states and 453 transitions. [2022-11-16 12:46:52,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 143 transitions, 498 flow [2022-11-16 12:46:52,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 143 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:46:52,386 INFO L231 Difference]: Finished difference. Result has 124 places, 114 transitions, 330 flow [2022-11-16 12:46:52,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=124, PETRI_TRANSITIONS=114} [2022-11-16 12:46:52,387 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 5 predicate places. [2022-11-16 12:46:52,388 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 114 transitions, 330 flow [2022-11-16 12:46:52,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:52,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:52,389 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] [2022-11-16 12:46:52,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:46:52,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash 752407917, now seen corresponding path program 1 times [2022-11-16 12:46:52,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:52,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013039773] [2022-11-16 12:46:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:52,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:46:52,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:52,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013039773] [2022-11-16 12:46:52,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013039773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:52,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:52,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:46:52,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642486918] [2022-11-16 12:46:52,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:52,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:46:52,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:46:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:46:52,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-11-16 12:46:52,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 114 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:52,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:52,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-11-16 12:46:52,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:52,806 INFO L130 PetriNetUnfolder]: 58/656 cut-off events. [2022-11-16 12:46:52,807 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-11-16 12:46:52,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 656 events. 58/656 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3362 event pairs, 16 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 695. Up to 264 conditions per place. [2022-11-16 12:46:52,813 INFO L137 encePairwiseOnDemand]: 109/124 looper letters, 31 selfloop transitions, 20 changer transitions 0/117 dead transitions. [2022-11-16 12:46:52,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 117 transitions, 436 flow [2022-11-16 12:46:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:46:52,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:46:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2022-11-16 12:46:52,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6629032258064517 [2022-11-16 12:46:52,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 411 transitions. [2022-11-16 12:46:52,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 411 transitions. [2022-11-16 12:46:52,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:52,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 411 transitions. [2022-11-16 12:46:52,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:52,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:52,822 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:52,822 INFO L175 Difference]: Start difference. First operand has 124 places, 114 transitions, 330 flow. Second operand 5 states and 411 transitions. [2022-11-16 12:46:52,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 117 transitions, 436 flow [2022-11-16 12:46:52,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 117 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:46:52,835 INFO L231 Difference]: Finished difference. Result has 119 places, 117 transitions, 390 flow [2022-11-16 12:46:52,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=119, PETRI_TRANSITIONS=117} [2022-11-16 12:46:52,838 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2022-11-16 12:46:52,839 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 117 transitions, 390 flow [2022-11-16 12:46:52,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:52,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:52,844 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:52,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:46:52,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1849809328, now seen corresponding path program 1 times [2022-11-16 12:46:52,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:52,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706202474] [2022-11-16 12:46:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:52,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:53,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:53,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:53,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706202474] [2022-11-16 12:46:53,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706202474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:53,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118812946] [2022-11-16 12:46:53,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:53,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:53,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:53,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:46:53,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:46:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:53,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:46:53,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:53,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:46:53,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118812946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:53,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:46:53,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:46:53,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858267837] [2022-11-16 12:46:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:53,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:46:53,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:46:53,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:46:53,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-11-16 12:46:53,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 117 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:53,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:53,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-11-16 12:46:53,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:53,811 INFO L130 PetriNetUnfolder]: 58/655 cut-off events. [2022-11-16 12:46:53,811 INFO L131 PetriNetUnfolder]: For 408/408 co-relation queries the response was YES. [2022-11-16 12:46:53,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 655 events. 58/655 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3359 event pairs, 0 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 777. Up to 167 conditions per place. [2022-11-16 12:46:53,818 INFO L137 encePairwiseOnDemand]: 111/124 looper letters, 53 selfloop transitions, 14 changer transitions 0/133 dead transitions. [2022-11-16 12:46:53,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 133 transitions, 578 flow [2022-11-16 12:46:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:46:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:46:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2022-11-16 12:46:53,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6670506912442397 [2022-11-16 12:46:53,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2022-11-16 12:46:53,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2022-11-16 12:46:53,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:53,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2022-11-16 12:46:53,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:53,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:53,830 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:53,830 INFO L175 Difference]: Start difference. First operand has 119 places, 117 transitions, 390 flow. Second operand 7 states and 579 transitions. [2022-11-16 12:46:53,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 133 transitions, 578 flow [2022-11-16 12:46:53,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 133 transitions, 554 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:46:53,842 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 390 flow [2022-11-16 12:46:53,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2022-11-16 12:46:53,846 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 2 predicate places. [2022-11-16 12:46:53,846 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 390 flow [2022-11-16 12:46:53,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:53,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:53,847 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:53,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:54,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:54,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:54,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1055487924, now seen corresponding path program 1 times [2022-11-16 12:46:54,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:54,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602455018] [2022-11-16 12:46:54,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:54,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:54,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:54,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602455018] [2022-11-16 12:46:54,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602455018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:54,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565934901] [2022-11-16 12:46:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:54,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:54,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:54,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:46:54,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:46:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:54,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:46:54,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:54,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:54,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565934901] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:46:54,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:46:54,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:46:54,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59208959] [2022-11-16 12:46:54,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:46:54,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:46:54,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:46:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:46:54,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-11-16 12:46:54,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 390 flow. Second operand has 10 states, 10 states have (on average 76.5) internal successors, (765), 10 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:54,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:54,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-11-16 12:46:54,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:54,511 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-11-16 12:46:54,512 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-16 12:46:54,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 61 events. 0/61 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-11-16 12:46:54,512 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 14 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2022-11-16 12:46:54,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 55 transitions, 206 flow [2022-11-16 12:46:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:46:54,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:46:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 680 transitions. [2022-11-16 12:46:54,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6093189964157706 [2022-11-16 12:46:54,516 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 680 transitions. [2022-11-16 12:46:54,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 680 transitions. [2022-11-16 12:46:54,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:54,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 680 transitions. [2022-11-16 12:46:54,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.55555555555556) internal successors, (680), 9 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:54,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:54,522 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:54,522 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 390 flow. Second operand 9 states and 680 transitions. [2022-11-16 12:46:54,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 55 transitions, 206 flow [2022-11-16 12:46:54,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 189 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-16 12:46:54,525 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 149 flow [2022-11-16 12:46:54,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2022-11-16 12:46:54,526 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, -50 predicate places. [2022-11-16 12:46:54,526 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 149 flow [2022-11-16 12:46:54,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.5) internal successors, (765), 10 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:54,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:54,527 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:54,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:54,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:46:54,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:54,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash 303049927, now seen corresponding path program 1 times [2022-11-16 12:46:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:54,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157812800] [2022-11-16 12:46:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:46:54,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:46:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:46:54,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:46:54,804 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:46:54,804 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-16 12:46:54,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-16 12:46:54,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-16 12:46:54,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-16 12:46:54,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-16 12:46:54,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-16 12:46:54,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-16 12:46:54,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-16 12:46:54,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-16 12:46:54,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-16 12:46:54,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:46:54,812 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:46:54,812 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:46:54,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:46:54,884 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-16 12:46:54,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-11-16 12:46:55,421 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-11-16 12:46:55,422 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-16 12:46:55,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3283 conditions, 2832 events. 496/2832 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 20030 event pairs, 64 based on Foata normal form. 0/2242 useless extension candidates. Maximal degree in co-relation 1682. Up to 192 conditions per place. [2022-11-16 12:46:55,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 142 transitions, 362 flow [2022-11-16 12:46:55,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 142 transitions, 362 flow [2022-11-16 12:46:55,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:46:55,468 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;@66295dec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:46:55,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 12:46:55,478 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-11-16 12:46:55,478 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:46:55,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:55,478 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:55,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:55,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1339417476, now seen corresponding path program 1 times [2022-11-16 12:46:55,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:55,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316945244] [2022-11-16 12:46:55,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:55,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:55,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:55,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316945244] [2022-11-16 12:46:55,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316945244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:55,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:55,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:46:55,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764964290] [2022-11-16 12:46:55,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:55,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:46:55,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:55,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:46:55,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:46:55,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-11-16 12:46:55,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:55,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:55,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-11-16 12:46:55,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:56,562 INFO L130 PetriNetUnfolder]: 444/3258 cut-off events. [2022-11-16 12:46:56,562 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2022-11-16 12:46:56,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5493 conditions, 3258 events. 444/3258 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 27873 event pairs, 10 based on Foata normal form. 1641/4360 useless extension candidates. Maximal degree in co-relation 2726. Up to 1064 conditions per place. [2022-11-16 12:46:56,589 INFO L137 encePairwiseOnDemand]: 119/142 looper letters, 69 selfloop transitions, 10 changer transitions 8/163 dead transitions. [2022-11-16 12:46:56,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 163 transitions, 600 flow [2022-11-16 12:46:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:46:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:46:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 515 transitions. [2022-11-16 12:46:56,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7253521126760564 [2022-11-16 12:46:56,592 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 515 transitions. [2022-11-16 12:46:56,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 515 transitions. [2022-11-16 12:46:56,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:56,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 515 transitions. [2022-11-16 12:46:56,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:56,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:56,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:56,596 INFO L175 Difference]: Start difference. First operand has 136 places, 142 transitions, 362 flow. Second operand 5 states and 515 transitions. [2022-11-16 12:46:56,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 163 transitions, 600 flow [2022-11-16 12:46:56,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 163 transitions, 600 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:46:56,602 INFO L231 Difference]: Finished difference. Result has 140 places, 130 transitions, 392 flow [2022-11-16 12:46:56,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=140, PETRI_TRANSITIONS=130} [2022-11-16 12:46:56,603 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 4 predicate places. [2022-11-16 12:46:56,603 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 130 transitions, 392 flow [2022-11-16 12:46:56,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:56,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:56,604 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] [2022-11-16 12:46:56,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:46:56,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:56,605 INFO L85 PathProgramCache]: Analyzing trace with hash 768055441, now seen corresponding path program 1 times [2022-11-16 12:46:56,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:56,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059234671] [2022-11-16 12:46:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:56,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:46:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:56,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059234671] [2022-11-16 12:46:56,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059234671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:56,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:56,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:46:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14761474] [2022-11-16 12:46:56,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:56,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:46:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:46:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:46:56,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-11-16 12:46:56,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 130 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:56,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:56,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-11-16 12:46:56,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:57,457 INFO L130 PetriNetUnfolder]: 444/2800 cut-off events. [2022-11-16 12:46:57,457 INFO L131 PetriNetUnfolder]: For 870/870 co-relation queries the response was YES. [2022-11-16 12:46:57,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 2800 events. 444/2800 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22497 event pairs, 109 based on Foata normal form. 2/2399 useless extension candidates. Maximal degree in co-relation 2862. Up to 1267 conditions per place. [2022-11-16 12:46:57,486 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 37 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2022-11-16 12:46:57,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 510 flow [2022-11-16 12:46:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:46:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:46:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2022-11-16 12:46:57,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6577464788732394 [2022-11-16 12:46:57,489 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2022-11-16 12:46:57,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2022-11-16 12:46:57,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:57,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2022-11-16 12:46:57,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:57,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:57,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:57,493 INFO L175 Difference]: Start difference. First operand has 140 places, 130 transitions, 392 flow. Second operand 5 states and 467 transitions. [2022-11-16 12:46:57,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 510 flow [2022-11-16 12:46:57,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:46:57,499 INFO L231 Difference]: Finished difference. Result has 135 places, 133 transitions, 452 flow [2022-11-16 12:46:57,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2022-11-16 12:46:57,502 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, -1 predicate places. [2022-11-16 12:46:57,502 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 452 flow [2022-11-16 12:46:57,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:57,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:57,503 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:57,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:46:57,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1960084584, now seen corresponding path program 1 times [2022-11-16 12:46:57,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:57,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837342513] [2022-11-16 12:46:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:57,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:57,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837342513] [2022-11-16 12:46:57,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837342513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:57,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132061057] [2022-11-16 12:46:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:57,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:57,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:57,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:46:57,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:46:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:46:57,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:57,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:46:57,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132061057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:57,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:46:57,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:46:57,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295830003] [2022-11-16 12:46:57,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:57,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:46:57,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:57,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:46:57,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:46:57,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-11-16 12:46:57,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 133 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:57,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:57,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-11-16 12:46:57,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:58,849 INFO L130 PetriNetUnfolder]: 444/2798 cut-off events. [2022-11-16 12:46:58,849 INFO L131 PetriNetUnfolder]: For 1997/1997 co-relation queries the response was YES. [2022-11-16 12:46:58,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6033 conditions, 2798 events. 444/2798 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22478 event pairs, 10 based on Foata normal form. 2/2397 useless extension candidates. Maximal degree in co-relation 3164. Up to 909 conditions per place. [2022-11-16 12:46:58,885 INFO L137 encePairwiseOnDemand]: 129/142 looper letters, 63 selfloop transitions, 14 changer transitions 0/153 dead transitions. [2022-11-16 12:46:58,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 153 transitions, 680 flow [2022-11-16 12:46:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:46:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:46:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 659 transitions. [2022-11-16 12:46:58,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6629778672032193 [2022-11-16 12:46:58,888 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 659 transitions. [2022-11-16 12:46:58,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 659 transitions. [2022-11-16 12:46:58,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:58,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 659 transitions. [2022-11-16 12:46:58,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:58,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:58,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:58,896 INFO L175 Difference]: Start difference. First operand has 135 places, 133 transitions, 452 flow. Second operand 7 states and 659 transitions. [2022-11-16 12:46:58,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 153 transitions, 680 flow [2022-11-16 12:46:58,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 153 transitions, 656 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:46:58,904 INFO L231 Difference]: Finished difference. Result has 137 places, 132 transitions, 452 flow [2022-11-16 12:46:58,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=137, PETRI_TRANSITIONS=132} [2022-11-16 12:46:58,908 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2022-11-16 12:46:58,908 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 132 transitions, 452 flow [2022-11-16 12:46:58,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:58,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:58,909 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:58,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:59,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:46:59,115 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:46:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash -951218575, now seen corresponding path program 1 times [2022-11-16 12:46:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:59,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216818140] [2022-11-16 12:46:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:59,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:59,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:59,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216818140] [2022-11-16 12:46:59,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216818140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:59,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288026668] [2022-11-16 12:46:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:59,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:59,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:59,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:46:59,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:46:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:59,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:46:59,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:59,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:59,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288026668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:46:59,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:46:59,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:46:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24902573] [2022-11-16 12:46:59,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:46:59,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:46:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:46:59,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:46:59,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-11-16 12:46:59,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 132 transitions, 452 flow. Second operand has 10 states, 10 states have (on average 86.5) internal successors, (865), 10 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:59,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:59,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-11-16 12:46:59,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:00,322 INFO L130 PetriNetUnfolder]: 423/2506 cut-off events. [2022-11-16 12:47:00,322 INFO L131 PetriNetUnfolder]: For 1647/1647 co-relation queries the response was YES. [2022-11-16 12:47:00,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5496 conditions, 2506 events. 423/2506 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 19995 event pairs, 35 based on Foata normal form. 2/2157 useless extension candidates. Maximal degree in co-relation 5367. Up to 482 conditions per place. [2022-11-16 12:47:00,346 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 64 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2022-11-16 12:47:00,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 732 flow [2022-11-16 12:47:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:47:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:47:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 917 transitions. [2022-11-16 12:47:00,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.645774647887324 [2022-11-16 12:47:00,355 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 917 transitions. [2022-11-16 12:47:00,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 917 transitions. [2022-11-16 12:47:00,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:00,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 917 transitions. [2022-11-16 12:47:00,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:00,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:00,364 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:00,364 INFO L175 Difference]: Start difference. First operand has 137 places, 132 transitions, 452 flow. Second operand 10 states and 917 transitions. [2022-11-16 12:47:00,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 732 flow [2022-11-16 12:47:00,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 161 transitions, 714 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 12:47:00,374 INFO L231 Difference]: Finished difference. Result has 146 places, 136 transitions, 532 flow [2022-11-16 12:47:00,374 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=532, PETRI_PLACES=146, PETRI_TRANSITIONS=136} [2022-11-16 12:47:00,375 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 10 predicate places. [2022-11-16 12:47:00,375 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 136 transitions, 532 flow [2022-11-16 12:47:00,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.5) internal successors, (865), 10 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:00,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:00,377 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:00,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:47:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:00,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash 643974405, now seen corresponding path program 1 times [2022-11-16 12:47:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:00,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178258756] [2022-11-16 12:47:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:47:00,606 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:47:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:47:00,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:47:00,642 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:47:00,643 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-16 12:47:00,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-16 12:47:00,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-16 12:47:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-16 12:47:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-16 12:47:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-16 12:47:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-16 12:47:00,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-16 12:47:00,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-16 12:47:00,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-16 12:47:00,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:47:00,645 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:47:00,646 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:47:00,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 12:47:00,693 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-16 12:47:00,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-11-16 12:47:02,855 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-11-16 12:47:02,855 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-16 12:47:02,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 10862 events. 2379/10862 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 100691 event pairs, 626 based on Foata normal form. 0/8690 useless extension candidates. Maximal degree in co-relation 6464. Up to 1024 conditions per place. [2022-11-16 12:47:02,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 160 transitions, 432 flow [2022-11-16 12:47:03,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 160 transitions, 432 flow [2022-11-16 12:47:03,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:47:03,005 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;@66295dec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:47:03,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 12:47:03,010 INFO L130 PetriNetUnfolder]: 4/60 cut-off events. [2022-11-16 12:47:03,011 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:47:03,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:03,011 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] [2022-11-16 12:47:03,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:03,012 INFO L85 PathProgramCache]: Analyzing trace with hash 212880878, now seen corresponding path program 1 times [2022-11-16 12:47:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:03,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570747027] [2022-11-16 12:47:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:03,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:03,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:03,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570747027] [2022-11-16 12:47:03,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570747027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:03,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:03,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:03,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612337340] [2022-11-16 12:47:03,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:03,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:03,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:03,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:03,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:03,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-16 12:47:03,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 160 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:03,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:03,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-16 12:47:03,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:06,200 INFO L130 PetriNetUnfolder]: 2570/13559 cut-off events. [2022-11-16 12:47:06,200 INFO L131 PetriNetUnfolder]: For 3152/3152 co-relation queries the response was YES. [2022-11-16 12:47:06,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23845 conditions, 13559 events. 2570/13559 cut-off events. For 3152/3152 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 147861 event pairs, 152 based on Foata normal form. 8872/20287 useless extension candidates. Maximal degree in co-relation 11662. Up to 4858 conditions per place. [2022-11-16 12:47:06,332 INFO L137 encePairwiseOnDemand]: 136/160 looper letters, 79 selfloop transitions, 10 changer transitions 8/183 dead transitions. [2022-11-16 12:47:06,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 183 transitions, 706 flow [2022-11-16 12:47:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:47:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:47:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 577 transitions. [2022-11-16 12:47:06,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.72125 [2022-11-16 12:47:06,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 577 transitions. [2022-11-16 12:47:06,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 577 transitions. [2022-11-16 12:47:06,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:06,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 577 transitions. [2022-11-16 12:47:06,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:06,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:06,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:06,341 INFO L175 Difference]: Start difference. First operand has 153 places, 160 transitions, 432 flow. Second operand 5 states and 577 transitions. [2022-11-16 12:47:06,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 183 transitions, 706 flow [2022-11-16 12:47:06,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 183 transitions, 706 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:47:06,350 INFO L231 Difference]: Finished difference. Result has 156 places, 146 transitions, 458 flow [2022-11-16 12:47:06,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=156, PETRI_TRANSITIONS=146} [2022-11-16 12:47:06,351 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 3 predicate places. [2022-11-16 12:47:06,352 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 146 transitions, 458 flow [2022-11-16 12:47:06,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:06,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:06,353 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] [2022-11-16 12:47:06,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:47:06,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:06,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:06,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1027880071, now seen corresponding path program 1 times [2022-11-16 12:47:06,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:06,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255680072] [2022-11-16 12:47:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:06,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:47:06,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:06,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255680072] [2022-11-16 12:47:06,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255680072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:06,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:06,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:06,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071395853] [2022-11-16 12:47:06,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:06,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:06,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:06,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-16 12:47:06,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 146 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:06,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:06,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-16 12:47:06,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:09,194 INFO L130 PetriNetUnfolder]: 2570/11580 cut-off events. [2022-11-16 12:47:09,194 INFO L131 PetriNetUnfolder]: For 4233/4233 co-relation queries the response was YES. [2022-11-16 12:47:09,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23311 conditions, 11580 events. 2570/11580 cut-off events. For 4233/4233 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118640 event pairs, 618 based on Foata normal form. 3/9967 useless extension candidates. Maximal degree in co-relation 12092. Up to 5766 conditions per place. [2022-11-16 12:47:09,312 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 43 selfloop transitions, 20 changer transitions 0/149 dead transitions. [2022-11-16 12:47:09,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 149 transitions, 588 flow [2022-11-16 12:47:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:47:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:47:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 523 transitions. [2022-11-16 12:47:09,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.65375 [2022-11-16 12:47:09,315 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 523 transitions. [2022-11-16 12:47:09,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 523 transitions. [2022-11-16 12:47:09,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:09,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 523 transitions. [2022-11-16 12:47:09,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:09,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:09,321 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:09,321 INFO L175 Difference]: Start difference. First operand has 156 places, 146 transitions, 458 flow. Second operand 5 states and 523 transitions. [2022-11-16 12:47:09,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 149 transitions, 588 flow [2022-11-16 12:47:09,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 149 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:47:09,334 INFO L231 Difference]: Finished difference. Result has 151 places, 149 transitions, 518 flow [2022-11-16 12:47:09,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=151, PETRI_TRANSITIONS=149} [2022-11-16 12:47:09,335 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, -2 predicate places. [2022-11-16 12:47:09,335 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 149 transitions, 518 flow [2022-11-16 12:47:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:09,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:09,336 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:09,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:47:09,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1799511808, now seen corresponding path program 1 times [2022-11-16 12:47:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:09,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973205376] [2022-11-16 12:47:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:09,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:09,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973205376] [2022-11-16 12:47:09,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973205376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:09,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993789504] [2022-11-16 12:47:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:09,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:09,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:09,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:47:09,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:47:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:09,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:47:09,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:09,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:47:09,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993789504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:09,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:47:09,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:47:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212181496] [2022-11-16 12:47:09,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:09,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:47:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:09,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:47:09,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:09,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-16 12:47:09,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:09,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:09,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-16 12:47:09,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:12,340 INFO L130 PetriNetUnfolder]: 2570/11577 cut-off events. [2022-11-16 12:47:12,340 INFO L131 PetriNetUnfolder]: For 8768/8768 co-relation queries the response was YES. [2022-11-16 12:47:12,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25663 conditions, 11577 events. 2570/11577 cut-off events. For 8768/8768 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118666 event pairs, 152 based on Foata normal form. 3/9964 useless extension candidates. Maximal degree in co-relation 13262. Up to 4303 conditions per place. [2022-11-16 12:47:12,477 INFO L137 encePairwiseOnDemand]: 147/160 looper letters, 73 selfloop transitions, 14 changer transitions 0/173 dead transitions. [2022-11-16 12:47:12,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 173 transitions, 786 flow [2022-11-16 12:47:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:47:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:47:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 739 transitions. [2022-11-16 12:47:12,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6598214285714286 [2022-11-16 12:47:12,481 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 739 transitions. [2022-11-16 12:47:12,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 739 transitions. [2022-11-16 12:47:12,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:12,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 739 transitions. [2022-11-16 12:47:12,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:12,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:12,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:12,490 INFO L175 Difference]: Start difference. First operand has 151 places, 149 transitions, 518 flow. Second operand 7 states and 739 transitions. [2022-11-16 12:47:12,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 173 transitions, 786 flow [2022-11-16 12:47:12,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 173 transitions, 762 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:47:12,511 INFO L231 Difference]: Finished difference. Result has 153 places, 148 transitions, 518 flow [2022-11-16 12:47:12,511 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=153, PETRI_TRANSITIONS=148} [2022-11-16 12:47:12,512 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 0 predicate places. [2022-11-16 12:47:12,512 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 518 flow [2022-11-16 12:47:12,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:12,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:12,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:12,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:47:12,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:12,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:12,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:12,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1879016232, now seen corresponding path program 1 times [2022-11-16 12:47:12,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:12,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950652492] [2022-11-16 12:47:12,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:12,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:12,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:12,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950652492] [2022-11-16 12:47:12,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950652492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:12,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269427123] [2022-11-16 12:47:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:12,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:12,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:12,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:47:12,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:47:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:12,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:47:12,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:13,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:47:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:13,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269427123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:47:13,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:47:13,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:47:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406002719] [2022-11-16 12:47:13,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:47:13,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:47:13,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:13,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:47:13,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:47:13,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-16 12:47:13,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 148 transitions, 518 flow. Second operand has 10 states, 10 states have (on average 96.5) internal successors, (965), 10 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:13,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:13,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-16 12:47:13,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:15,917 INFO L130 PetriNetUnfolder]: 2538/11165 cut-off events. [2022-11-16 12:47:15,917 INFO L131 PetriNetUnfolder]: For 7602/7602 co-relation queries the response was YES. [2022-11-16 12:47:15,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24930 conditions, 11165 events. 2538/11165 cut-off events. For 7602/7602 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117291 event pairs, 214 based on Foata normal form. 2/9627 useless extension candidates. Maximal degree in co-relation 13286. Up to 2161 conditions per place. [2022-11-16 12:47:16,031 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 74 selfloop transitions, 21 changer transitions 0/181 dead transitions. [2022-11-16 12:47:16,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 181 transitions, 838 flow [2022-11-16 12:47:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:47:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:47:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1027 transitions. [2022-11-16 12:47:16,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.641875 [2022-11-16 12:47:16,035 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1027 transitions. [2022-11-16 12:47:16,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1027 transitions. [2022-11-16 12:47:16,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:16,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1027 transitions. [2022-11-16 12:47:16,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.7) internal successors, (1027), 10 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:16,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:16,045 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:16,045 INFO L175 Difference]: Start difference. First operand has 153 places, 148 transitions, 518 flow. Second operand 10 states and 1027 transitions. [2022-11-16 12:47:16,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 181 transitions, 838 flow [2022-11-16 12:47:16,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 181 transitions, 820 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 12:47:16,066 INFO L231 Difference]: Finished difference. Result has 162 places, 152 transitions, 598 flow [2022-11-16 12:47:16,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=598, PETRI_PLACES=162, PETRI_TRANSITIONS=152} [2022-11-16 12:47:16,068 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 9 predicate places. [2022-11-16 12:47:16,068 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 598 flow [2022-11-16 12:47:16,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.5) internal successors, (965), 10 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:16,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:16,069 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:16,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:47:16,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:47:16,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash 736703771, now seen corresponding path program 1 times [2022-11-16 12:47:16,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:16,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671062935] [2022-11-16 12:47:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:16,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:47:16,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:16,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671062935] [2022-11-16 12:47:16,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671062935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:16,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:16,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849432274] [2022-11-16 12:47:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:16,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-16 12:47:16,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 152 transitions, 598 flow. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:16,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:16,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-16 12:47:16,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:19,068 INFO L130 PetriNetUnfolder]: 2538/11161 cut-off events. [2022-11-16 12:47:19,068 INFO L131 PetriNetUnfolder]: For 14122/14122 co-relation queries the response was YES. [2022-11-16 12:47:19,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27272 conditions, 11161 events. 2538/11161 cut-off events. For 14122/14122 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117259 event pairs, 214 based on Foata normal form. 0/9625 useless extension candidates. Maximal degree in co-relation 14484. Up to 4554 conditions per place. [2022-11-16 12:47:19,186 INFO L137 encePairwiseOnDemand]: 148/160 looper letters, 82 selfloop transitions, 10 changer transitions 0/178 dead transitions. [2022-11-16 12:47:19,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 178 transitions, 882 flow [2022-11-16 12:47:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:47:19,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:47:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-11-16 12:47:19,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.695 [2022-11-16 12:47:19,189 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-11-16 12:47:19,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-11-16 12:47:19,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:19,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-11-16 12:47:19,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:19,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:19,195 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:19,195 INFO L175 Difference]: Start difference. First operand has 162 places, 152 transitions, 598 flow. Second operand 5 states and 556 transitions. [2022-11-16 12:47:19,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 178 transitions, 882 flow [2022-11-16 12:47:19,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 178 transitions, 858 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-16 12:47:19,226 INFO L231 Difference]: Finished difference. Result has 165 places, 154 transitions, 618 flow [2022-11-16 12:47:19,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=165, PETRI_TRANSITIONS=154} [2022-11-16 12:47:19,227 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 12 predicate places. [2022-11-16 12:47:19,228 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 154 transitions, 618 flow [2022-11-16 12:47:19,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:19,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:19,229 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:19,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:47:19,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:19,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash 887604142, now seen corresponding path program 1 times [2022-11-16 12:47:19,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:19,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818829703] [2022-11-16 12:47:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:19,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:47:19,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:47:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:47:19,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:47:19,275 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:47:19,276 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-16 12:47:19,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-16 12:47:19,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-16 12:47:19,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-16 12:47:19,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-16 12:47:19,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-16 12:47:19,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-16 12:47:19,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-16 12:47:19,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-16 12:47:19,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-16 12:47:19,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:47:19,278 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 12:47:19,279 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:47:19,279 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 12:47:19,319 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-16 12:47:19,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 506 flow [2022-11-16 12:47:27,827 INFO L130 PetriNetUnfolder]: 11372/43900 cut-off events. [2022-11-16 12:47:27,827 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-11-16 12:47:28,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54326 conditions, 43900 events. 11372/43900 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 512166 event pairs, 4296 based on Foata normal form. 0/35528 useless extension candidates. Maximal degree in co-relation 26480. Up to 5120 conditions per place. [2022-11-16 12:47:28,287 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 506 flow [2022-11-16 12:47:28,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 506 flow [2022-11-16 12:47:28,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:47:28,458 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;@66295dec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:47:28,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 12:47:28,462 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-11-16 12:47:28,463 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:47:28,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:28,463 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] [2022-11-16 12:47:28,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:28,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:28,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1260724566, now seen corresponding path program 1 times [2022-11-16 12:47:28,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:28,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30576667] [2022-11-16 12:47:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:28,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:28,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30576667] [2022-11-16 12:47:28,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30576667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:28,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:28,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:28,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959851301] [2022-11-16 12:47:28,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:28,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:28,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:28,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:28,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:28,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-11-16 12:47:28,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:28,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:28,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-11-16 12:47:28,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:40,967 INFO L130 PetriNetUnfolder]: 13354/56320 cut-off events. [2022-11-16 12:47:40,967 INFO L131 PetriNetUnfolder]: For 15570/15570 co-relation queries the response was YES. [2022-11-16 12:47:41,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102993 conditions, 56320 events. 13354/56320 cut-off events. For 15570/15570 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 730402 event pairs, 1312 based on Foata normal form. 44070/91985 useless extension candidates. Maximal degree in co-relation 49834. Up to 21536 conditions per place. [2022-11-16 12:47:41,593 INFO L137 encePairwiseOnDemand]: 153/178 looper letters, 89 selfloop transitions, 10 changer transitions 8/203 dead transitions. [2022-11-16 12:47:41,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 203 transitions, 816 flow [2022-11-16 12:47:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:47:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:47:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2022-11-16 12:47:41,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7179775280898877 [2022-11-16 12:47:41,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2022-11-16 12:47:41,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2022-11-16 12:47:41,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:41,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2022-11-16 12:47:41,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,600 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,600 INFO L175 Difference]: Start difference. First operand has 170 places, 178 transitions, 506 flow. Second operand 5 states and 639 transitions. [2022-11-16 12:47:41,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 203 transitions, 816 flow [2022-11-16 12:47:41,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 203 transitions, 816 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:47:41,618 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 528 flow [2022-11-16 12:47:41,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=528, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-11-16 12:47:41,619 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-11-16 12:47:41,619 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 528 flow [2022-11-16 12:47:41,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:41,620 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] [2022-11-16 12:47:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:47:41,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:41,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:41,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1531881807, now seen corresponding path program 1 times [2022-11-16 12:47:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:41,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650157757] [2022-11-16 12:47:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:41,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:47:41,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:41,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650157757] [2022-11-16 12:47:41,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650157757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:41,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:41,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:41,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21765590] [2022-11-16 12:47:41,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:41,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:41,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:41,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:41,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:41,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-11-16 12:47:41,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:41,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:41,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-11-16 12:47:41,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:52,818 INFO L130 PetriNetUnfolder]: 13354/48212 cut-off events. [2022-11-16 12:47:52,818 INFO L131 PetriNetUnfolder]: For 19782/19782 co-relation queries the response was YES. [2022-11-16 12:47:53,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100306 conditions, 48212 events. 13354/48212 cut-off events. For 19782/19782 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 582902 event pairs, 3293 based on Foata normal form. 4/41885 useless extension candidates. Maximal degree in co-relation 52037. Up to 25869 conditions per place. [2022-11-16 12:47:53,465 INFO L137 encePairwiseOnDemand]: 163/178 looper letters, 49 selfloop transitions, 20 changer transitions 0/165 dead transitions. [2022-11-16 12:47:53,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 165 transitions, 670 flow [2022-11-16 12:47:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:47:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:47:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2022-11-16 12:47:53,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.650561797752809 [2022-11-16 12:47:53,469 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2022-11-16 12:47:53,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2022-11-16 12:47:53,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:53,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2022-11-16 12:47:53,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,476 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,476 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 528 flow. Second operand 5 states and 579 transitions. [2022-11-16 12:47:53,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 165 transitions, 670 flow [2022-11-16 12:47:53,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:47:53,524 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 588 flow [2022-11-16 12:47:53,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2022-11-16 12:47:53,526 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-11-16 12:47:53,526 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 588 flow [2022-11-16 12:47:53,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:53,527 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:53,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:47:53,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 12:47:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash 243696616, now seen corresponding path program 1 times [2022-11-16 12:47:53,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:53,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001463340] [2022-11-16 12:47:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:53,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:53,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:53,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001463340] [2022-11-16 12:47:53,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001463340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:53,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244421484] [2022-11-16 12:47:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:53,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:53,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:53,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:47:53,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d97ff80-94f3-45f2-8c44-261978ea2bb3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:47:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:53,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:47:53,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:53,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:47:53,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244421484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:53,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:47:53,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:47:53,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762248796] [2022-11-16 12:47:53,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:53,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:47:53,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:53,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:47:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:53,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-11-16 12:47:53,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:53,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-11-16 12:47:53,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand