./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3fef2534d7e571caae7ed965d7471ed1f22fea3d397b160035401f5a41da921e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:42:02,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:42:02,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:42:03,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:42:03,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:42:03,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:42:03,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:42:03,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:42:03,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:42:03,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:42:03,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:42:03,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:42:03,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:42:03,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:42:03,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:42:03,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:42:03,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:42:03,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:42:03,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:42:03,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:42:03,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:42:03,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:42:03,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:42:03,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:42:03,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:42:03,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:42:03,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:42:03,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:42:03,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:42:03,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:42:03,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:42:03,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:42:03,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:42:03,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:42:03,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:42:03,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:42:03,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:42:03,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:42:03,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:42:03,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:42:03,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:42:03,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:42:03,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:42:03,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:42:03,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:42:03,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:42:03,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:42:03,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:42:03,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:42:03,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:42:03,135 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:42:03,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:42:03,136 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:42:03,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:42:03,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:42:03,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:42:03,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:42:03,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:42:03,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:42:03,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:42:03,138 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:42:03,138 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:42:03,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:42:03,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:42:03,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:42:03,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:42:03,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:42:03,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:42:03,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:03,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:42:03,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:42:03,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:42:03,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:42:03,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:42:03,141 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:42:03,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:42:03,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:42:03,141 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_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fef2534d7e571caae7ed965d7471ed1f22fea3d397b160035401f5a41da921e [2022-11-18 18:42:03,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:42:03,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:42:03,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:42:03,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:42:03,496 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:42:03,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-50.i [2022-11-18 18:42:03,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/data/844b3fd6f/32cce4b9f0514e91ba0f4ffa7c3cac8d/FLAG850083d63 [2022-11-18 18:42:04,183 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:42:04,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-50.i [2022-11-18 18:42:04,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/data/844b3fd6f/32cce4b9f0514e91ba0f4ffa7c3cac8d/FLAG850083d63 [2022-11-18 18:42:04,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/data/844b3fd6f/32cce4b9f0514e91ba0f4ffa7c3cac8d [2022-11-18 18:42:04,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:42:04,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:42:04,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:04,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:42:04,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:42:04,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:04" (1/1) ... [2022-11-18 18:42:04,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4364a8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:04, skipping insertion in model container [2022-11-18 18:42:04,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:04" (1/1) ... [2022-11-18 18:42:04,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:42:04,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:42:04,994 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-50.i[30190,30203] [2022-11-18 18:42:05,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:05,018 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:42:05,073 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-50.i[30190,30203] [2022-11-18 18:42:05,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:05,113 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:42:05,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05 WrapperNode [2022-11-18 18:42:05,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:05,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:05,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:42:05,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:42:05,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,157 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-11-18 18:42:05,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:05,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:42:05,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:42:05,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:42:05,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,180 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:42:05,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:42:05,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:42:05,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:42:05,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (1/1) ... [2022-11-18 18:42:05,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:05,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:05,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:42:05,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:42:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:42:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-18 18:42:05,265 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-18 18:42:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:42:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:42:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:42:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:42:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:42:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-18 18:42:05,267 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-18 18:42:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:42:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:42:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:42:05,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:42:05,269 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:42:05,392 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:42:05,394 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:42:05,597 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:42:05,604 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:42:05,612 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:42:05,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:05 BoogieIcfgContainer [2022-11-18 18:42:05,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:42:05,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:42:05,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:42:05,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:42:05,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:42:04" (1/3) ... [2022-11-18 18:42:05,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264ad5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:05, skipping insertion in model container [2022-11-18 18:42:05,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:05" (2/3) ... [2022-11-18 18:42:05,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264ad5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:05, skipping insertion in model container [2022-11-18 18:42:05,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:05" (3/3) ... [2022-11-18 18:42:05,627 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-50.i [2022-11-18 18:42:05,638 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:42:05,649 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:42:05,649 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 18:42:05,649 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:42:05,769 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 18:42:05,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-11-18 18:42:05,959 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-11-18 18:42:05,960 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:42:05,966 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. [2022-11-18 18:42:05,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 106 transitions, 234 flow [2022-11-18 18:42:05,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 106 transitions, 234 flow [2022-11-18 18:42:05,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:42:06,000 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;@187046de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:42:06,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:42:06,026 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-11-18 18:42:06,026 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:06,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:06,028 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] [2022-11-18 18:42:06,028 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)] === [2022-11-18 18:42:06,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:06,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1743683162, now seen corresponding path program 1 times [2022-11-18 18:42:06,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:06,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887423528] [2022-11-18 18:42:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:06,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:06,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:06,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887423528] [2022-11-18 18:42:06,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887423528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:06,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:06,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:06,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595165262] [2022-11-18 18:42:06,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:06,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:06,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:06,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:06,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 106 [2022-11-18 18:42:06,511 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) [2022-11-18 18:42:06,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:06,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 106 [2022-11-18 18:42:06,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:06,706 INFO L130 PetriNetUnfolder]: 2/140 cut-off events. [2022-11-18 18:42:06,706 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:42:06,706 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. [2022-11-18 18:42:06,708 INFO L137 encePairwiseOnDemand]: 85/106 looper letters, 33 selfloop transitions, 9 changer transitions 14/110 dead transitions. [2022-11-18 18:42:06,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 110 transitions, 342 flow [2022-11-18 18:42:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2022-11-18 18:42:06,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7132075471698113 [2022-11-18 18:42:06,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2022-11-18 18:42:06,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2022-11-18 18:42:06,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:06,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2022-11-18 18:42:06,752 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) [2022-11-18 18:42:06,760 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) [2022-11-18 18:42:06,760 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) [2022-11-18 18:42:06,762 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 234 flow. Second operand 5 states and 378 transitions. [2022-11-18 18:42:06,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 110 transitions, 342 flow [2022-11-18 18:42:06,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 110 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:42:06,774 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 227 flow [2022-11-18 18:42:06,776 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} [2022-11-18 18:42:06,781 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 2 predicate places. [2022-11-18 18:42:06,782 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 227 flow [2022-11-18 18:42:06,782 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) [2022-11-18 18:42:06,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:06,784 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] [2022-11-18 18:42:06,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:42:06,785 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)] === [2022-11-18 18:42:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash 888287988, now seen corresponding path program 1 times [2022-11-18 18:42:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:06,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844708829] [2022-11-18 18:42:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:42:06,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:42:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:42:06,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:42:06,924 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:42:06,926 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 18:42:06,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 18:42:06,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 18:42:06,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 18:42:06,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 18:42:06,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 18:42:06,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 18:42:06,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 18:42:06,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 18:42:06,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 18:42:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:42:06,931 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:42:06,934 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:42:06,934 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:42:06,964 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 18:42:06,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-11-18 18:42:07,119 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-11-18 18:42:07,119 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 18:42:07,127 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. [2022-11-18 18:42:07,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 124 transitions, 296 flow [2022-11-18 18:42:07,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 124 transitions, 296 flow [2022-11-18 18:42:07,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:42:07,142 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;@187046de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:42:07,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:42:07,156 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-11-18 18:42:07,156 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:07,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:07,157 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] [2022-11-18 18:42:07,162 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)] === [2022-11-18 18:42:07,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:07,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2118885228, now seen corresponding path program 1 times [2022-11-18 18:42:07,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:07,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821034911] [2022-11-18 18:42:07,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:07,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:07,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:07,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821034911] [2022-11-18 18:42:07,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821034911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:07,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:07,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:07,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933555073] [2022-11-18 18:42:07,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:07,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:07,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:07,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:07,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:07,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-11-18 18:42:07,345 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) [2022-11-18 18:42:07,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:07,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-11-18 18:42:07,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:07,637 INFO L130 PetriNetUnfolder]: 58/745 cut-off events. [2022-11-18 18:42:07,637 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-11-18 18:42:07,638 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. [2022-11-18 18:42:07,641 INFO L137 encePairwiseOnDemand]: 102/124 looper letters, 59 selfloop transitions, 10 changer transitions 8/143 dead transitions. [2022-11-18 18:42:07,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 143 transitions, 498 flow [2022-11-18 18:42:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:07,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2022-11-18 18:42:07,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7306451612903225 [2022-11-18 18:42:07,644 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2022-11-18 18:42:07,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2022-11-18 18:42:07,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:07,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2022-11-18 18:42:07,646 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) [2022-11-18 18:42:07,648 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) [2022-11-18 18:42:07,649 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) [2022-11-18 18:42:07,649 INFO L175 Difference]: Start difference. First operand has 119 places, 124 transitions, 296 flow. Second operand 5 states and 453 transitions. [2022-11-18 18:42:07,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 143 transitions, 498 flow [2022-11-18 18:42:07,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 143 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:42:07,658 INFO L231 Difference]: Finished difference. Result has 124 places, 114 transitions, 330 flow [2022-11-18 18:42:07,658 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} [2022-11-18 18:42:07,659 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 5 predicate places. [2022-11-18 18:42:07,659 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 114 transitions, 330 flow [2022-11-18 18:42:07,660 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) [2022-11-18 18:42:07,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:07,660 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] [2022-11-18 18:42:07,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:42:07,661 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)] === [2022-11-18 18:42:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash 752407917, now seen corresponding path program 1 times [2022-11-18 18:42:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:07,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082495282] [2022-11-18 18:42:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:42:07,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:07,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082495282] [2022-11-18 18:42:07,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082495282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:07,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:07,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:07,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134677862] [2022-11-18 18:42:07,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:07,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:07,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:07,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:07,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:07,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-11-18 18:42:07,748 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) [2022-11-18 18:42:07,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:07,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-11-18 18:42:07,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:07,998 INFO L130 PetriNetUnfolder]: 58/656 cut-off events. [2022-11-18 18:42:07,999 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-11-18 18:42:08,001 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. [2022-11-18 18:42:08,005 INFO L137 encePairwiseOnDemand]: 109/124 looper letters, 31 selfloop transitions, 20 changer transitions 0/117 dead transitions. [2022-11-18 18:42:08,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 117 transitions, 436 flow [2022-11-18 18:42:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2022-11-18 18:42:08,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6629032258064517 [2022-11-18 18:42:08,008 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 411 transitions. [2022-11-18 18:42:08,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 411 transitions. [2022-11-18 18:42:08,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:08,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 411 transitions. [2022-11-18 18:42:08,010 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) [2022-11-18 18:42:08,011 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) [2022-11-18 18:42:08,012 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) [2022-11-18 18:42:08,012 INFO L175 Difference]: Start difference. First operand has 124 places, 114 transitions, 330 flow. Second operand 5 states and 411 transitions. [2022-11-18 18:42:08,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 117 transitions, 436 flow [2022-11-18 18:42:08,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 117 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:42:08,024 INFO L231 Difference]: Finished difference. Result has 119 places, 117 transitions, 390 flow [2022-11-18 18:42:08,024 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} [2022-11-18 18:42:08,027 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2022-11-18 18:42:08,028 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 117 transitions, 390 flow [2022-11-18 18:42:08,028 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) [2022-11-18 18:42:08,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:08,031 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] [2022-11-18 18:42:08,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:42:08,032 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)] === [2022-11-18 18:42:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1849809328, now seen corresponding path program 1 times [2022-11-18 18:42:08,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:08,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764411549] [2022-11-18 18:42:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:08,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:08,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764411549] [2022-11-18 18:42:08,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764411549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:08,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607212971] [2022-11-18 18:42:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:08,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:08,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:08,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:08,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:42:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:08,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:42:08,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:08,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:08,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607212971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:08,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:42:08,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:42:08,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023985074] [2022-11-18 18:42:08,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:08,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:08,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:08,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:08,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:42:08,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-11-18 18:42:08,437 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) [2022-11-18 18:42:08,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:08,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-11-18 18:42:08,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:08,703 INFO L130 PetriNetUnfolder]: 58/655 cut-off events. [2022-11-18 18:42:08,704 INFO L131 PetriNetUnfolder]: For 408/408 co-relation queries the response was YES. [2022-11-18 18:42:08,706 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. [2022-11-18 18:42:08,708 INFO L137 encePairwiseOnDemand]: 111/124 looper letters, 53 selfloop transitions, 14 changer transitions 0/133 dead transitions. [2022-11-18 18:42:08,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 133 transitions, 578 flow [2022-11-18 18:42:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:42:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:42:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2022-11-18 18:42:08,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6670506912442397 [2022-11-18 18:42:08,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2022-11-18 18:42:08,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2022-11-18 18:42:08,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:08,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2022-11-18 18:42:08,714 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) [2022-11-18 18:42:08,715 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) [2022-11-18 18:42:08,716 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) [2022-11-18 18:42:08,716 INFO L175 Difference]: Start difference. First operand has 119 places, 117 transitions, 390 flow. Second operand 7 states and 579 transitions. [2022-11-18 18:42:08,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 133 transitions, 578 flow [2022-11-18 18:42:08,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 133 transitions, 554 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:42:08,726 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 390 flow [2022-11-18 18:42:08,726 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} [2022-11-18 18:42:08,728 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 2 predicate places. [2022-11-18 18:42:08,729 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 390 flow [2022-11-18 18:42:08,729 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) [2022-11-18 18:42:08,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:08,729 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] [2022-11-18 18:42:08,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:42:08,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:08,935 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)] === [2022-11-18 18:42:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:08,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1055487924, now seen corresponding path program 1 times [2022-11-18 18:42:08,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:08,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884200647] [2022-11-18 18:42:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:08,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:09,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:09,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884200647] [2022-11-18 18:42:09,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884200647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:09,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229068823] [2022-11-18 18:42:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:09,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:09,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:09,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:42:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:09,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:42:09,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:09,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:09,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229068823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:09,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:42:09,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:42:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78067438] [2022-11-18 18:42:09,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:09,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:42:09,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:09,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:42:09,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:42:09,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-11-18 18:42:09,279 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) [2022-11-18 18:42:09,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:09,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-11-18 18:42:09,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:09,364 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-11-18 18:42:09,365 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-18 18:42:09,365 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. [2022-11-18 18:42:09,365 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 14 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2022-11-18 18:42:09,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 55 transitions, 206 flow [2022-11-18 18:42:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:42:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:42:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 680 transitions. [2022-11-18 18:42:09,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6093189964157706 [2022-11-18 18:42:09,369 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 680 transitions. [2022-11-18 18:42:09,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 680 transitions. [2022-11-18 18:42:09,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:09,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 680 transitions. [2022-11-18 18:42:09,372 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) [2022-11-18 18:42:09,374 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) [2022-11-18 18:42:09,374 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) [2022-11-18 18:42:09,375 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 390 flow. Second operand 9 states and 680 transitions. [2022-11-18 18:42:09,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 55 transitions, 206 flow [2022-11-18 18:42:09,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 189 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-18 18:42:09,377 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 149 flow [2022-11-18 18:42:09,377 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} [2022-11-18 18:42:09,384 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, -50 predicate places. [2022-11-18 18:42:09,384 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 149 flow [2022-11-18 18:42:09,385 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) [2022-11-18 18:42:09,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:09,385 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] [2022-11-18 18:42:09,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 18:42:09,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:42:09,590 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)] === [2022-11-18 18:42:09,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:09,591 INFO L85 PathProgramCache]: Analyzing trace with hash 303049927, now seen corresponding path program 1 times [2022-11-18 18:42:09,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:09,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296840687] [2022-11-18 18:42:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:09,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:42:09,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:42:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:42:09,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:42:09,647 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:42:09,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 18:42:09,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 18:42:09,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 18:42:09,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 18:42:09,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 18:42:09,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 18:42:09,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 18:42:09,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 18:42:09,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 18:42:09,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 18:42:09,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:42:09,653 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 18:42:09,654 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:42:09,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:42:09,682 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-18 18:42:09,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-11-18 18:42:10,096 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-11-18 18:42:10,096 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-18 18:42:10,113 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. [2022-11-18 18:42:10,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 142 transitions, 362 flow [2022-11-18 18:42:10,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 142 transitions, 362 flow [2022-11-18 18:42:10,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:42:10,131 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;@187046de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:42:10,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:42:10,145 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-11-18 18:42:10,145 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:10,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:10,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:10,149 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)] === [2022-11-18 18:42:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1339417476, now seen corresponding path program 1 times [2022-11-18 18:42:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:10,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308555564] [2022-11-18 18:42:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:10,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:10,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308555564] [2022-11-18 18:42:10,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308555564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:10,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:10,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:10,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571852829] [2022-11-18 18:42:10,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:10,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:10,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:10,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:10,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-11-18 18:42:10,236 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) [2022-11-18 18:42:10,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:10,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-11-18 18:42:10,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:11,022 INFO L130 PetriNetUnfolder]: 444/3258 cut-off events. [2022-11-18 18:42:11,023 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2022-11-18 18:42:11,031 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. [2022-11-18 18:42:11,045 INFO L137 encePairwiseOnDemand]: 119/142 looper letters, 69 selfloop transitions, 10 changer transitions 8/163 dead transitions. [2022-11-18 18:42:11,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 163 transitions, 600 flow [2022-11-18 18:42:11,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 515 transitions. [2022-11-18 18:42:11,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7253521126760564 [2022-11-18 18:42:11,049 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 515 transitions. [2022-11-18 18:42:11,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 515 transitions. [2022-11-18 18:42:11,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:11,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 515 transitions. [2022-11-18 18:42:11,051 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) [2022-11-18 18:42:11,053 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) [2022-11-18 18:42:11,053 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) [2022-11-18 18:42:11,054 INFO L175 Difference]: Start difference. First operand has 136 places, 142 transitions, 362 flow. Second operand 5 states and 515 transitions. [2022-11-18 18:42:11,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 163 transitions, 600 flow [2022-11-18 18:42:11,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 163 transitions, 600 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:42:11,058 INFO L231 Difference]: Finished difference. Result has 140 places, 130 transitions, 392 flow [2022-11-18 18:42:11,059 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} [2022-11-18 18:42:11,059 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 4 predicate places. [2022-11-18 18:42:11,060 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 130 transitions, 392 flow [2022-11-18 18:42:11,060 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) [2022-11-18 18:42:11,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:11,060 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] [2022-11-18 18:42:11,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:42:11,061 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)] === [2022-11-18 18:42:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash 768055441, now seen corresponding path program 1 times [2022-11-18 18:42:11,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:11,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107448938] [2022-11-18 18:42:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:11,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:42:11,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:11,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107448938] [2022-11-18 18:42:11,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107448938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:11,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:11,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:11,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690361569] [2022-11-18 18:42:11,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:11,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:11,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:11,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:11,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:11,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-11-18 18:42:11,111 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) [2022-11-18 18:42:11,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:11,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-11-18 18:42:11,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:11,767 INFO L130 PetriNetUnfolder]: 444/2800 cut-off events. [2022-11-18 18:42:11,768 INFO L131 PetriNetUnfolder]: For 870/870 co-relation queries the response was YES. [2022-11-18 18:42:11,777 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. [2022-11-18 18:42:11,794 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 37 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2022-11-18 18:42:11,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 510 flow [2022-11-18 18:42:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2022-11-18 18:42:11,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6577464788732394 [2022-11-18 18:42:11,796 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2022-11-18 18:42:11,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2022-11-18 18:42:11,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:11,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2022-11-18 18:42:11,798 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) [2022-11-18 18:42:11,800 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) [2022-11-18 18:42:11,800 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) [2022-11-18 18:42:11,801 INFO L175 Difference]: Start difference. First operand has 140 places, 130 transitions, 392 flow. Second operand 5 states and 467 transitions. [2022-11-18 18:42:11,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 510 flow [2022-11-18 18:42:11,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:42:11,806 INFO L231 Difference]: Finished difference. Result has 135 places, 133 transitions, 452 flow [2022-11-18 18:42:11,807 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} [2022-11-18 18:42:11,807 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, -1 predicate places. [2022-11-18 18:42:11,808 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 452 flow [2022-11-18 18:42:11,808 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) [2022-11-18 18:42:11,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:11,809 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] [2022-11-18 18:42:11,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:42:11,809 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)] === [2022-11-18 18:42:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:11,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1960084584, now seen corresponding path program 1 times [2022-11-18 18:42:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:11,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936832859] [2022-11-18 18:42:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:11,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:11,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:11,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936832859] [2022-11-18 18:42:11,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936832859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:11,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843146796] [2022-11-18 18:42:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:11,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:11,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:11,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:11,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:42:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:42:12,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:12,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:12,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843146796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:12,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:42:12,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:42:12,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537268193] [2022-11-18 18:42:12,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:12,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:12,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:12,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:12,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:42:12,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-11-18 18:42:12,086 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) [2022-11-18 18:42:12,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:12,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-11-18 18:42:12,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:12,842 INFO L130 PetriNetUnfolder]: 444/2798 cut-off events. [2022-11-18 18:42:12,843 INFO L131 PetriNetUnfolder]: For 1997/1997 co-relation queries the response was YES. [2022-11-18 18:42:12,851 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. [2022-11-18 18:42:12,863 INFO L137 encePairwiseOnDemand]: 129/142 looper letters, 63 selfloop transitions, 14 changer transitions 0/153 dead transitions. [2022-11-18 18:42:12,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 153 transitions, 680 flow [2022-11-18 18:42:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:42:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:42:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 659 transitions. [2022-11-18 18:42:12,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6629778672032193 [2022-11-18 18:42:12,866 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 659 transitions. [2022-11-18 18:42:12,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 659 transitions. [2022-11-18 18:42:12,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:12,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 659 transitions. [2022-11-18 18:42:12,869 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) [2022-11-18 18:42:12,871 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) [2022-11-18 18:42:12,871 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) [2022-11-18 18:42:12,871 INFO L175 Difference]: Start difference. First operand has 135 places, 133 transitions, 452 flow. Second operand 7 states and 659 transitions. [2022-11-18 18:42:12,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 153 transitions, 680 flow [2022-11-18 18:42:12,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 153 transitions, 656 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:42:12,878 INFO L231 Difference]: Finished difference. Result has 137 places, 132 transitions, 452 flow [2022-11-18 18:42:12,879 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} [2022-11-18 18:42:12,879 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2022-11-18 18:42:12,880 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 132 transitions, 452 flow [2022-11-18 18:42:12,880 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) [2022-11-18 18:42:12,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:12,880 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] [2022-11-18 18:42:12,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:13,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:13,085 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)] === [2022-11-18 18:42:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:13,086 INFO L85 PathProgramCache]: Analyzing trace with hash -951218575, now seen corresponding path program 1 times [2022-11-18 18:42:13,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:13,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772384424] [2022-11-18 18:42:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:13,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:13,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:13,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772384424] [2022-11-18 18:42:13,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772384424] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:13,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669730618] [2022-11-18 18:42:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:13,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:13,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:13,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:13,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:42:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:42:13,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:13,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:13,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669730618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:13,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:42:13,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:42:13,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784111555] [2022-11-18 18:42:13,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:13,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:42:13,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:13,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:42:13,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:42:13,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-11-18 18:42:13,347 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) [2022-11-18 18:42:13,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:13,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-11-18 18:42:13,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:14,007 INFO L130 PetriNetUnfolder]: 423/2506 cut-off events. [2022-11-18 18:42:14,007 INFO L131 PetriNetUnfolder]: For 1647/1647 co-relation queries the response was YES. [2022-11-18 18:42:14,017 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. [2022-11-18 18:42:14,077 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 64 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2022-11-18 18:42:14,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 732 flow [2022-11-18 18:42:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:42:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:42:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 917 transitions. [2022-11-18 18:42:14,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.645774647887324 [2022-11-18 18:42:14,081 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 917 transitions. [2022-11-18 18:42:14,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 917 transitions. [2022-11-18 18:42:14,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:14,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 917 transitions. [2022-11-18 18:42:14,085 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) [2022-11-18 18:42:14,088 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) [2022-11-18 18:42:14,089 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) [2022-11-18 18:42:14,089 INFO L175 Difference]: Start difference. First operand has 137 places, 132 transitions, 452 flow. Second operand 10 states and 917 transitions. [2022-11-18 18:42:14,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 732 flow [2022-11-18 18:42:14,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 161 transitions, 714 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 18:42:14,102 INFO L231 Difference]: Finished difference. Result has 146 places, 136 transitions, 532 flow [2022-11-18 18:42:14,102 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} [2022-11-18 18:42:14,103 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 10 predicate places. [2022-11-18 18:42:14,104 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 136 transitions, 532 flow [2022-11-18 18:42:14,104 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) [2022-11-18 18:42:14,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:14,105 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] [2022-11-18 18:42:14,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:14,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:14,311 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)] === [2022-11-18 18:42:14,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:14,311 INFO L85 PathProgramCache]: Analyzing trace with hash 643974405, now seen corresponding path program 1 times [2022-11-18 18:42:14,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:14,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323913885] [2022-11-18 18:42:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:14,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:42:14,329 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:42:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:42:14,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:42:14,361 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:42:14,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 18:42:14,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 18:42:14,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 18:42:14,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 18:42:14,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 18:42:14,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 18:42:14,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 18:42:14,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 18:42:14,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 18:42:14,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 18:42:14,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:42:14,364 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 18:42:14,365 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:42:14,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 18:42:14,393 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-18 18:42:14,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-11-18 18:42:16,317 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-11-18 18:42:16,317 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-18 18:42:16,407 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. [2022-11-18 18:42:16,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 160 transitions, 432 flow [2022-11-18 18:42:16,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 160 transitions, 432 flow [2022-11-18 18:42:16,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:42:16,452 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;@187046de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:42:16,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:42:16,456 INFO L130 PetriNetUnfolder]: 4/60 cut-off events. [2022-11-18 18:42:16,457 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:16,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:16,457 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] [2022-11-18 18:42:16,457 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)] === [2022-11-18 18:42:16,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 212880878, now seen corresponding path program 1 times [2022-11-18 18:42:16,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:16,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981270751] [2022-11-18 18:42:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:16,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:16,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981270751] [2022-11-18 18:42:16,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981270751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:16,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:16,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188502605] [2022-11-18 18:42:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:16,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:16,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:16,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-18 18:42:16,502 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) [2022-11-18 18:42:16,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:16,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-18 18:42:16,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:18,998 INFO L130 PetriNetUnfolder]: 2570/13559 cut-off events. [2022-11-18 18:42:18,999 INFO L131 PetriNetUnfolder]: For 3152/3152 co-relation queries the response was YES. [2022-11-18 18:42:19,045 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. [2022-11-18 18:42:19,097 INFO L137 encePairwiseOnDemand]: 136/160 looper letters, 79 selfloop transitions, 10 changer transitions 8/183 dead transitions. [2022-11-18 18:42:19,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 183 transitions, 706 flow [2022-11-18 18:42:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 577 transitions. [2022-11-18 18:42:19,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.72125 [2022-11-18 18:42:19,101 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 577 transitions. [2022-11-18 18:42:19,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 577 transitions. [2022-11-18 18:42:19,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:19,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 577 transitions. [2022-11-18 18:42:19,104 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) [2022-11-18 18:42:19,105 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) [2022-11-18 18:42:19,106 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) [2022-11-18 18:42:19,106 INFO L175 Difference]: Start difference. First operand has 153 places, 160 transitions, 432 flow. Second operand 5 states and 577 transitions. [2022-11-18 18:42:19,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 183 transitions, 706 flow [2022-11-18 18:42:19,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 183 transitions, 706 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:42:19,113 INFO L231 Difference]: Finished difference. Result has 156 places, 146 transitions, 458 flow [2022-11-18 18:42:19,113 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} [2022-11-18 18:42:19,114 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 3 predicate places. [2022-11-18 18:42:19,114 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 146 transitions, 458 flow [2022-11-18 18:42:19,114 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) [2022-11-18 18:42:19,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:19,115 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] [2022-11-18 18:42:19,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:42:19,115 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)] === [2022-11-18 18:42:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1027880071, now seen corresponding path program 1 times [2022-11-18 18:42:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265599117] [2022-11-18 18:42:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:19,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:42:19,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:19,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265599117] [2022-11-18 18:42:19,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265599117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:19,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:19,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:19,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150400945] [2022-11-18 18:42:19,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:19,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:19,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:19,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:19,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-18 18:42:19,167 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) [2022-11-18 18:42:19,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:19,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-18 18:42:19,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:21,395 INFO L130 PetriNetUnfolder]: 2570/11580 cut-off events. [2022-11-18 18:42:21,396 INFO L131 PetriNetUnfolder]: For 4233/4233 co-relation queries the response was YES. [2022-11-18 18:42:21,430 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. [2022-11-18 18:42:21,479 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 43 selfloop transitions, 20 changer transitions 0/149 dead transitions. [2022-11-18 18:42:21,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 149 transitions, 588 flow [2022-11-18 18:42:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 523 transitions. [2022-11-18 18:42:21,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.65375 [2022-11-18 18:42:21,482 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 523 transitions. [2022-11-18 18:42:21,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 523 transitions. [2022-11-18 18:42:21,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:21,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 523 transitions. [2022-11-18 18:42:21,484 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) [2022-11-18 18:42:21,486 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) [2022-11-18 18:42:21,486 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) [2022-11-18 18:42:21,487 INFO L175 Difference]: Start difference. First operand has 156 places, 146 transitions, 458 flow. Second operand 5 states and 523 transitions. [2022-11-18 18:42:21,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 149 transitions, 588 flow [2022-11-18 18:42:21,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 149 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:42:21,497 INFO L231 Difference]: Finished difference. Result has 151 places, 149 transitions, 518 flow [2022-11-18 18:42:21,497 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} [2022-11-18 18:42:21,498 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, -2 predicate places. [2022-11-18 18:42:21,498 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 149 transitions, 518 flow [2022-11-18 18:42:21,499 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) [2022-11-18 18:42:21,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:21,499 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] [2022-11-18 18:42:21,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:42:21,499 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)] === [2022-11-18 18:42:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1799511808, now seen corresponding path program 1 times [2022-11-18 18:42:21,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:21,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472953308] [2022-11-18 18:42:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:21,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:21,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:21,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472953308] [2022-11-18 18:42:21,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472953308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:21,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98199084] [2022-11-18 18:42:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:21,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:21,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:21,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:21,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:42:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:42:21,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:21,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:21,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98199084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:21,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:42:21,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:42:21,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485200401] [2022-11-18 18:42:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:21,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:21,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:21,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:42:21,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-18 18:42:21,771 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) [2022-11-18 18:42:21,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:21,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-18 18:42:21,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:23,971 INFO L130 PetriNetUnfolder]: 2570/11577 cut-off events. [2022-11-18 18:42:23,971 INFO L131 PetriNetUnfolder]: For 8768/8768 co-relation queries the response was YES. [2022-11-18 18:42:24,011 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. [2022-11-18 18:42:24,061 INFO L137 encePairwiseOnDemand]: 147/160 looper letters, 73 selfloop transitions, 14 changer transitions 0/173 dead transitions. [2022-11-18 18:42:24,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 173 transitions, 786 flow [2022-11-18 18:42:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:42:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:42:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 739 transitions. [2022-11-18 18:42:24,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6598214285714286 [2022-11-18 18:42:24,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 739 transitions. [2022-11-18 18:42:24,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 739 transitions. [2022-11-18 18:42:24,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:24,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 739 transitions. [2022-11-18 18:42:24,070 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) [2022-11-18 18:42:24,072 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) [2022-11-18 18:42:24,073 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) [2022-11-18 18:42:24,073 INFO L175 Difference]: Start difference. First operand has 151 places, 149 transitions, 518 flow. Second operand 7 states and 739 transitions. [2022-11-18 18:42:24,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 173 transitions, 786 flow [2022-11-18 18:42:24,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 173 transitions, 762 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:42:24,088 INFO L231 Difference]: Finished difference. Result has 153 places, 148 transitions, 518 flow [2022-11-18 18:42:24,088 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} [2022-11-18 18:42:24,089 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 0 predicate places. [2022-11-18 18:42:24,089 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 518 flow [2022-11-18 18:42:24,089 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) [2022-11-18 18:42:24,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:24,090 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] [2022-11-18 18:42:24,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:24,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:24,295 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)] === [2022-11-18 18:42:24,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1879016232, now seen corresponding path program 1 times [2022-11-18 18:42:24,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:24,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141613113] [2022-11-18 18:42:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:24,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:24,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141613113] [2022-11-18 18:42:24,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141613113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:24,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847517181] [2022-11-18 18:42:24,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:24,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:24,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:24,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:24,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:42:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:24,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:42:24,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:24,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:24,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847517181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:24,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:42:24,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:42:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297741073] [2022-11-18 18:42:24,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:24,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:42:24,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:24,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:42:24,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:42:24,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-18 18:42:24,566 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) [2022-11-18 18:42:24,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:24,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-18 18:42:24,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:26,794 INFO L130 PetriNetUnfolder]: 2538/11165 cut-off events. [2022-11-18 18:42:26,794 INFO L131 PetriNetUnfolder]: For 7602/7602 co-relation queries the response was YES. [2022-11-18 18:42:26,852 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. [2022-11-18 18:42:26,906 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 74 selfloop transitions, 21 changer transitions 0/181 dead transitions. [2022-11-18 18:42:26,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 181 transitions, 838 flow [2022-11-18 18:42:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:42:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:42:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1027 transitions. [2022-11-18 18:42:26,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.641875 [2022-11-18 18:42:26,910 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1027 transitions. [2022-11-18 18:42:26,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1027 transitions. [2022-11-18 18:42:26,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:26,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1027 transitions. [2022-11-18 18:42:26,915 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) [2022-11-18 18:42:26,918 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) [2022-11-18 18:42:26,919 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) [2022-11-18 18:42:26,919 INFO L175 Difference]: Start difference. First operand has 153 places, 148 transitions, 518 flow. Second operand 10 states and 1027 transitions. [2022-11-18 18:42:26,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 181 transitions, 838 flow [2022-11-18 18:42:26,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 181 transitions, 820 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 18:42:26,938 INFO L231 Difference]: Finished difference. Result has 162 places, 152 transitions, 598 flow [2022-11-18 18:42:26,939 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} [2022-11-18 18:42:26,940 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 9 predicate places. [2022-11-18 18:42:26,941 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 598 flow [2022-11-18 18:42:26,941 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) [2022-11-18 18:42:26,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:26,942 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] [2022-11-18 18:42:26,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:27,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:42:27,147 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)] === [2022-11-18 18:42:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:27,148 INFO L85 PathProgramCache]: Analyzing trace with hash 736703771, now seen corresponding path program 1 times [2022-11-18 18:42:27,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:27,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039812161] [2022-11-18 18:42:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:27,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 18:42:27,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:27,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039812161] [2022-11-18 18:42:27,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039812161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:27,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:27,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:27,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553687754] [2022-11-18 18:42:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:27,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:27,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:27,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:27,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-11-18 18:42:27,235 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) [2022-11-18 18:42:27,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:27,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-11-18 18:42:27,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:29,241 INFO L130 PetriNetUnfolder]: 2538/11161 cut-off events. [2022-11-18 18:42:29,241 INFO L131 PetriNetUnfolder]: For 14122/14122 co-relation queries the response was YES. [2022-11-18 18:42:29,280 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. [2022-11-18 18:42:29,307 INFO L137 encePairwiseOnDemand]: 148/160 looper letters, 82 selfloop transitions, 10 changer transitions 0/178 dead transitions. [2022-11-18 18:42:29,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 178 transitions, 882 flow [2022-11-18 18:42:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-11-18 18:42:29,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.695 [2022-11-18 18:42:29,312 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-11-18 18:42:29,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-11-18 18:42:29,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:29,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-11-18 18:42:29,316 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) [2022-11-18 18:42:29,319 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) [2022-11-18 18:42:29,319 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) [2022-11-18 18:42:29,320 INFO L175 Difference]: Start difference. First operand has 162 places, 152 transitions, 598 flow. Second operand 5 states and 556 transitions. [2022-11-18 18:42:29,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 178 transitions, 882 flow [2022-11-18 18:42:29,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 178 transitions, 858 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-18 18:42:29,346 INFO L231 Difference]: Finished difference. Result has 165 places, 154 transitions, 618 flow [2022-11-18 18:42:29,346 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} [2022-11-18 18:42:29,347 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 12 predicate places. [2022-11-18 18:42:29,347 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 154 transitions, 618 flow [2022-11-18 18:42:29,347 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) [2022-11-18 18:42:29,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:29,348 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] [2022-11-18 18:42:29,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:42:29,348 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)] === [2022-11-18 18:42:29,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:29,349 INFO L85 PathProgramCache]: Analyzing trace with hash 887604142, now seen corresponding path program 1 times [2022-11-18 18:42:29,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:29,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657851686] [2022-11-18 18:42:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:29,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:42:29,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:42:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:42:29,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:42:29,420 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:42:29,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 18:42:29,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 18:42:29,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 18:42:29,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 18:42:29,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 18:42:29,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 18:42:29,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 18:42:29,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 18:42:29,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 18:42:29,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 18:42:29,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 18:42:29,423 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 18:42:29,423 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:42:29,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 18:42:29,470 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-18 18:42:29,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 506 flow [2022-11-18 18:42:36,119 INFO L130 PetriNetUnfolder]: 11372/43900 cut-off events. [2022-11-18 18:42:36,119 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-11-18 18:42:36,525 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. [2022-11-18 18:42:36,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 506 flow [2022-11-18 18:42:36,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 506 flow [2022-11-18 18:42:36,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:42:36,875 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;@187046de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:42:36,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:42:36,881 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-11-18 18:42:36,881 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:36,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:36,882 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] [2022-11-18 18:42:36,882 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)] === [2022-11-18 18:42:36,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1260724566, now seen corresponding path program 1 times [2022-11-18 18:42:36,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:36,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006836120] [2022-11-18 18:42:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:36,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:36,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:36,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006836120] [2022-11-18 18:42:36,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006836120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:36,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:36,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:36,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330736607] [2022-11-18 18:42:36,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:36,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:36,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:36,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:36,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-11-18 18:42:36,944 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) [2022-11-18 18:42:36,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:36,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-11-18 18:42:36,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:46,530 INFO L130 PetriNetUnfolder]: 13354/56320 cut-off events. [2022-11-18 18:42:46,530 INFO L131 PetriNetUnfolder]: For 15570/15570 co-relation queries the response was YES. [2022-11-18 18:42:46,903 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. [2022-11-18 18:42:47,274 INFO L137 encePairwiseOnDemand]: 153/178 looper letters, 89 selfloop transitions, 10 changer transitions 8/203 dead transitions. [2022-11-18 18:42:47,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 203 transitions, 816 flow [2022-11-18 18:42:47,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:47,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2022-11-18 18:42:47,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7179775280898877 [2022-11-18 18:42:47,277 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2022-11-18 18:42:47,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2022-11-18 18:42:47,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:47,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2022-11-18 18:42:47,279 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) [2022-11-18 18:42:47,281 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) [2022-11-18 18:42:47,282 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) [2022-11-18 18:42:47,282 INFO L175 Difference]: Start difference. First operand has 170 places, 178 transitions, 506 flow. Second operand 5 states and 639 transitions. [2022-11-18 18:42:47,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 203 transitions, 816 flow [2022-11-18 18:42:47,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 203 transitions, 816 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:42:47,297 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 528 flow [2022-11-18 18:42:47,297 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} [2022-11-18 18:42:47,298 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-11-18 18:42:47,298 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 528 flow [2022-11-18 18:42:47,299 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) [2022-11-18 18:42:47,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:47,299 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] [2022-11-18 18:42:47,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:42:47,299 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)] === [2022-11-18 18:42:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:47,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1531881807, now seen corresponding path program 1 times [2022-11-18 18:42:47,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:47,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670462225] [2022-11-18 18:42:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:47,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:42:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:47,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670462225] [2022-11-18 18:42:47,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670462225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:47,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:47,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:47,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405497189] [2022-11-18 18:42:47,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:47,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:47,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:47,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-11-18 18:42:47,342 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) [2022-11-18 18:42:47,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:47,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-11-18 18:42:47,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:55,971 INFO L130 PetriNetUnfolder]: 13354/48212 cut-off events. [2022-11-18 18:42:55,971 INFO L131 PetriNetUnfolder]: For 19782/19782 co-relation queries the response was YES. [2022-11-18 18:42:56,330 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. [2022-11-18 18:42:56,516 INFO L137 encePairwiseOnDemand]: 163/178 looper letters, 49 selfloop transitions, 20 changer transitions 0/165 dead transitions. [2022-11-18 18:42:56,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 165 transitions, 670 flow [2022-11-18 18:42:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:42:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2022-11-18 18:42:56,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.650561797752809 [2022-11-18 18:42:56,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2022-11-18 18:42:56,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2022-11-18 18:42:56,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:56,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2022-11-18 18:42:56,521 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) [2022-11-18 18:42:56,523 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) [2022-11-18 18:42:56,523 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) [2022-11-18 18:42:56,524 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 528 flow. Second operand 5 states and 579 transitions. [2022-11-18 18:42:56,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 165 transitions, 670 flow [2022-11-18 18:42:56,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:42:56,558 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 588 flow [2022-11-18 18:42:56,558 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} [2022-11-18 18:42:56,558 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-11-18 18:42:56,559 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 588 flow [2022-11-18 18:42:56,559 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) [2022-11-18 18:42:56,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:56,559 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] [2022-11-18 18:42:56,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 18:42:56,559 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)] === [2022-11-18 18:42:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:56,560 INFO L85 PathProgramCache]: Analyzing trace with hash 243696616, now seen corresponding path program 1 times [2022-11-18 18:42:56,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:56,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257278806] [2022-11-18 18:42:56,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:56,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:56,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:56,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257278806] [2022-11-18 18:42:56,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257278806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:56,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683814085] [2022-11-18 18:42:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:56,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:56,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:56,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:56,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3822cda-223f-4eb4-86ba-b2d638edcd6b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:42:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:56,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:42:56,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:56,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:56,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683814085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:56,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:42:56,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:42:56,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676814592] [2022-11-18 18:42:56,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:56,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:56,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:42:56,814 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-11-18 18:42:56,815 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) [2022-11-18 18:42:56,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:56,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-11-18 18:42:56,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand