./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:32:47,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:32:47,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:32:47,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:32:47,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:32:47,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:32:47,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:32:47,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:32:47,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:32:47,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:32:47,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:32:47,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:32:47,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:32:47,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:32:47,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:32:47,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:32:47,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:32:47,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:32:47,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:32:47,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:32:47,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:32:47,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:32:47,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:32:47,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:32:48,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:32:48,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:32:48,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:32:48,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:32:48,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:32:48,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:32:48,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:32:48,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:32:48,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:32:48,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:32:48,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:32:48,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:32:48,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:32:48,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:32:48,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:32:48,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:32:48,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:32:48,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:32:48,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:32:48,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:32:48,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:32:48,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:32:48,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:32:48,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:32:48,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:32:48,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:32:48,065 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:32:48,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:32:48,066 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:32:48,066 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:32:48,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:32:48,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:32:48,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:32:48,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:32:48,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:32:48,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:32:48,068 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:32:48,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:32:48,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:32:48,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:32:48,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:32:48,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:32:48,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:32:48,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:32:48,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:48,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:32:48,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:32:48,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:32:48,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:32:48,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:32:48,072 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:32:48,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:32:48,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:32:48,073 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_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-11-20 10:32:48,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:32:48,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:32:48,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:32:48,463 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:32:48,463 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:32:48,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-20 10:32:51,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:32:51,823 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:32:51,824 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-20 10:32:51,831 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/data/36e45512b/2476575d26c54ef2942ea5d5f294a51c/FLAG0e7172942 [2022-11-20 10:32:51,847 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/data/36e45512b/2476575d26c54ef2942ea5d5f294a51c [2022-11-20 10:32:51,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:32:51,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:32:51,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:32:51,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:32:51,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:32:51,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:51" (1/1) ... [2022-11-20 10:32:51,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483eac2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:51, skipping insertion in model container [2022-11-20 10:32:51,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:51" (1/1) ... [2022-11-20 10:32:51,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:32:51,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:32:52,117 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-20 10:32:52,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:32:52,151 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:32:52,200 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-20 10:32:52,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:32:52,228 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:32:52,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52 WrapperNode [2022-11-20 10:32:52,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:32:52,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:32:52,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:32:52,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:32:52,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,311 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 328 [2022-11-20 10:32:52,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:32:52,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:32:52,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:32:52,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:32:52,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,376 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:32:52,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:32:52,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:32:52,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:32:52,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (1/1) ... [2022-11-20 10:32:52,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:52,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:32:52,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:32:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:32:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:32:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:32:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:32:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:32:52,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:32:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:32:52,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:32:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:32:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:32:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:32:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:32:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:32:52,485 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:32:52,608 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:32:52,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:32:53,257 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:32:53,282 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:32:53,282 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:32:53,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:53 BoogieIcfgContainer [2022-11-20 10:32:53,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:32:53,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:32:53,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:32:53,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:32:53,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:32:51" (1/3) ... [2022-11-20 10:32:53,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad90e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:53, skipping insertion in model container [2022-11-20 10:32:53,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:52" (2/3) ... [2022-11-20 10:32:53,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad90e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:53, skipping insertion in model container [2022-11-20 10:32:53,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:53" (3/3) ... [2022-11-20 10:32:53,302 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-11-20 10:32:53,313 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:32:53,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:32:53,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-20 10:32:53,324 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:32:53,507 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:32:53,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 453 transitions, 922 flow [2022-11-20 10:32:53,725 INFO L130 PetriNetUnfolder]: 32/451 cut-off events. [2022-11-20 10:32:53,725 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:32:53,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 451 events. 32/451 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 602 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 347. Up to 2 conditions per place. [2022-11-20 10:32:53,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 453 transitions, 922 flow [2022-11-20 10:32:53,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 433 transitions, 878 flow [2022-11-20 10:32:53,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:32:53,766 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;@355bb9ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:32:53,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-20 10:32:53,778 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-20 10:32:53,779 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:32:53,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:53,780 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:53,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:32:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash -994666736, now seen corresponding path program 1 times [2022-11-20 10:32:53,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:53,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644158564] [2022-11-20 10:32:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:53,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:54,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:54,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644158564] [2022-11-20 10:32:54,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644158564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:54,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:54,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:32:54,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910590385] [2022-11-20 10:32:54,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:54,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:32:54,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:32:54,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:32:54,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 453 [2022-11-20 10:32:54,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 433 transitions, 878 flow. Second operand has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:54,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:54,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 453 [2022-11-20 10:32:54,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:54,899 INFO L130 PetriNetUnfolder]: 43/730 cut-off events. [2022-11-20 10:32:54,899 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-20 10:32:54,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 730 events. 43/730 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2767 event pairs, 15 based on Foata normal form. 31/655 useless extension candidates. Maximal degree in co-relation 504. Up to 90 conditions per place. [2022-11-20 10:32:54,912 INFO L137 encePairwiseOnDemand]: 423/453 looper letters, 58 selfloop transitions, 5 changer transitions 14/410 dead transitions. [2022-11-20 10:32:54,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 410 transitions, 982 flow [2022-11-20 10:32:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:32:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:32:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2186 transitions. [2022-11-20 10:32:54,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8042678440029434 [2022-11-20 10:32:54,947 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2186 transitions. [2022-11-20 10:32:54,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2186 transitions. [2022-11-20 10:32:54,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:54,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2186 transitions. [2022-11-20 10:32:54,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 364.3333333333333) internal successors, (2186), 6 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:54,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:54,983 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:54,986 INFO L175 Difference]: Start difference. First operand has 409 places, 433 transitions, 878 flow. Second operand 6 states and 2186 transitions. [2022-11-20 10:32:54,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 410 transitions, 982 flow [2022-11-20 10:32:54,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 410 transitions, 974 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:32:55,010 INFO L231 Difference]: Finished difference. Result has 406 places, 396 transitions, 805 flow [2022-11-20 10:32:55,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=805, PETRI_PLACES=406, PETRI_TRANSITIONS=396} [2022-11-20 10:32:55,020 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -3 predicate places. [2022-11-20 10:32:55,020 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 396 transitions, 805 flow [2022-11-20 10:32:55,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:55,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:55,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:32:55,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:32:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:55,025 INFO L85 PathProgramCache]: Analyzing trace with hash -769896901, now seen corresponding path program 1 times [2022-11-20 10:32:55,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:55,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073488877] [2022-11-20 10:32:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:55,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:55,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:55,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073488877] [2022-11-20 10:32:55,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073488877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:55,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:55,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:55,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540400454] [2022-11-20 10:32:55,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:55,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:55,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:55,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 453 [2022-11-20 10:32:55,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 396 transitions, 805 flow. Second operand has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:55,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 453 [2022-11-20 10:32:55,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:55,427 INFO L130 PetriNetUnfolder]: 43/714 cut-off events. [2022-11-20 10:32:55,428 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:32:55,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 714 events. 43/714 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2665 event pairs, 15 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 697. Up to 50 conditions per place. [2022-11-20 10:32:55,433 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 19 selfloop transitions, 3 changer transitions 0/394 dead transitions. [2022-11-20 10:32:55,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 394 transitions, 845 flow [2022-11-20 10:32:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:32:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:32:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1636 transitions. [2022-11-20 10:32:55,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9028697571743929 [2022-11-20 10:32:55,438 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1636 transitions. [2022-11-20 10:32:55,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1636 transitions. [2022-11-20 10:32:55,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:55,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1636 transitions. [2022-11-20 10:32:55,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,449 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,449 INFO L175 Difference]: Start difference. First operand has 406 places, 396 transitions, 805 flow. Second operand 4 states and 1636 transitions. [2022-11-20 10:32:55,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 394 transitions, 845 flow [2022-11-20 10:32:55,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 394 transitions, 835 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:32:55,457 INFO L231 Difference]: Finished difference. Result has 388 places, 394 transitions, 797 flow [2022-11-20 10:32:55,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=797, PETRI_PLACES=388, PETRI_TRANSITIONS=394} [2022-11-20 10:32:55,459 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -21 predicate places. [2022-11-20 10:32:55,459 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 394 transitions, 797 flow [2022-11-20 10:32:55,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:55,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:55,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:32:55,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:32:55,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:55,462 INFO L85 PathProgramCache]: Analyzing trace with hash -543948668, now seen corresponding path program 1 times [2022-11-20 10:32:55,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:55,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000406748] [2022-11-20 10:32:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:55,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:55,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:55,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000406748] [2022-11-20 10:32:55,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000406748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:55,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:55,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:55,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880431620] [2022-11-20 10:32:55,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:55,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:55,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:55,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-20 10:32:55,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 394 transitions, 797 flow. Second operand has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:55,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-20 10:32:55,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:55,794 INFO L130 PetriNetUnfolder]: 23/676 cut-off events. [2022-11-20 10:32:55,795 INFO L131 PetriNetUnfolder]: For 2/4 co-relation queries the response was YES. [2022-11-20 10:32:55,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 676 events. 23/676 cut-off events. For 2/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1857 event pairs, 0 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 698. Up to 29 conditions per place. [2022-11-20 10:32:55,801 INFO L137 encePairwiseOnDemand]: 440/453 looper letters, 38 selfloop transitions, 9 changer transitions 0/414 dead transitions. [2022-11-20 10:32:55,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 414 transitions, 934 flow [2022-11-20 10:32:55,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:32:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:32:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2061 transitions. [2022-11-20 10:32:55,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909933774834437 [2022-11-20 10:32:55,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2061 transitions. [2022-11-20 10:32:55,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2061 transitions. [2022-11-20 10:32:55,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:55,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2061 transitions. [2022-11-20 10:32:55,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 412.2) internal successors, (2061), 5 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,822 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,823 INFO L175 Difference]: Start difference. First operand has 388 places, 394 transitions, 797 flow. Second operand 5 states and 2061 transitions. [2022-11-20 10:32:55,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 414 transitions, 934 flow [2022-11-20 10:32:55,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 414 transitions, 928 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:32:55,833 INFO L231 Difference]: Finished difference. Result has 392 places, 401 transitions, 858 flow [2022-11-20 10:32:55,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=858, PETRI_PLACES=392, PETRI_TRANSITIONS=401} [2022-11-20 10:32:55,835 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -17 predicate places. [2022-11-20 10:32:55,835 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 401 transitions, 858 flow [2022-11-20 10:32:55,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:55,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:55,837 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:55,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:32:55,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:32:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1716433795, now seen corresponding path program 1 times [2022-11-20 10:32:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:55,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386039953] [2022-11-20 10:32:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:55,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:56,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:56,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386039953] [2022-11-20 10:32:56,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386039953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:56,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:56,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:32:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749899949] [2022-11-20 10:32:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:56,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:32:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:56,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:32:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:32:56,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 453 [2022-11-20 10:32:56,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 401 transitions, 858 flow. Second operand has 6 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:56,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:56,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 453 [2022-11-20 10:32:56,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:56,716 INFO L130 PetriNetUnfolder]: 211/2512 cut-off events. [2022-11-20 10:32:56,716 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-20 10:32:56,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2884 conditions, 2512 events. 211/2512 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 19394 event pairs, 96 based on Foata normal form. 0/2122 useless extension candidates. Maximal degree in co-relation 1499. Up to 308 conditions per place. [2022-11-20 10:32:56,735 INFO L137 encePairwiseOnDemand]: 446/453 looper letters, 72 selfloop transitions, 5 changer transitions 0/399 dead transitions. [2022-11-20 10:32:56,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 399 transitions, 1008 flow [2022-11-20 10:32:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:32:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:32:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2059 transitions. [2022-11-20 10:32:56,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7575423105224429 [2022-11-20 10:32:56,740 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2059 transitions. [2022-11-20 10:32:56,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2059 transitions. [2022-11-20 10:32:56,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:56,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2059 transitions. [2022-11-20 10:32:56,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 343.1666666666667) internal successors, (2059), 6 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:56,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:56,755 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:56,755 INFO L175 Difference]: Start difference. First operand has 392 places, 401 transitions, 858 flow. Second operand 6 states and 2059 transitions. [2022-11-20 10:32:56,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 399 transitions, 1008 flow [2022-11-20 10:32:56,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 399 transitions, 1003 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:32:56,764 INFO L231 Difference]: Finished difference. Result has 394 places, 399 transitions, 859 flow [2022-11-20 10:32:56,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=859, PETRI_PLACES=394, PETRI_TRANSITIONS=399} [2022-11-20 10:32:56,766 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -15 predicate places. [2022-11-20 10:32:56,766 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 399 transitions, 859 flow [2022-11-20 10:32:56,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:56,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:56,768 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:56,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:32:56,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:32:56,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:56,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1669839464, now seen corresponding path program 1 times [2022-11-20 10:32:56,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:56,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092066661] [2022-11-20 10:32:56,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:56,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:56,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:56,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092066661] [2022-11-20 10:32:56,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092066661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:56,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:56,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:56,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277444181] [2022-11-20 10:32:56,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:56,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:56,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:56,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:56,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:56,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 453 [2022-11-20 10:32:56,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 399 transitions, 859 flow. Second operand has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:56,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:56,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 453 [2022-11-20 10:32:56,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:57,169 INFO L130 PetriNetUnfolder]: 93/1432 cut-off events. [2022-11-20 10:32:57,169 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-20 10:32:57,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1574 conditions, 1432 events. 93/1432 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8141 event pairs, 30 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 1489. Up to 95 conditions per place. [2022-11-20 10:32:57,180 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 19 selfloop transitions, 3 changer transitions 0/397 dead transitions. [2022-11-20 10:32:57,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 397 transitions, 899 flow [2022-11-20 10:32:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:32:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:32:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1636 transitions. [2022-11-20 10:32:57,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9028697571743929 [2022-11-20 10:32:57,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1636 transitions. [2022-11-20 10:32:57,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1636 transitions. [2022-11-20 10:32:57,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:57,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1636 transitions. [2022-11-20 10:32:57,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:57,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:57,195 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:57,195 INFO L175 Difference]: Start difference. First operand has 394 places, 399 transitions, 859 flow. Second operand 4 states and 1636 transitions. [2022-11-20 10:32:57,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 397 transitions, 899 flow [2022-11-20 10:32:57,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 397 transitions, 890 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:32:57,203 INFO L231 Difference]: Finished difference. Result has 391 places, 397 transitions, 852 flow [2022-11-20 10:32:57,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=852, PETRI_PLACES=391, PETRI_TRANSITIONS=397} [2022-11-20 10:32:57,205 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -18 predicate places. [2022-11-20 10:32:57,205 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 397 transitions, 852 flow [2022-11-20 10:32:57,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:57,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:57,206 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:57,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:32:57,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:32:57,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:57,207 INFO L85 PathProgramCache]: Analyzing trace with hash -807856653, now seen corresponding path program 1 times [2022-11-20 10:32:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:57,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121992995] [2022-11-20 10:32:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:57,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:57,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:57,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121992995] [2022-11-20 10:32:57,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121992995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:57,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234222372] [2022-11-20 10:32:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:57,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:57,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:57,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:57,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:32:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:57,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:32:57,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:57,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:32:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:57,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234222372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:32:57,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:32:57,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:32:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978584230] [2022-11-20 10:32:57,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:32:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:32:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:32:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:32:57,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-20 10:32:57,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 397 transitions, 852 flow. Second operand has 12 states, 12 states have (on average 404.6666666666667) internal successors, (4856), 12 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:57,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:57,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-20 10:32:57,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:58,241 INFO L130 PetriNetUnfolder]: 56/1506 cut-off events. [2022-11-20 10:32:58,241 INFO L131 PetriNetUnfolder]: For 28/33 co-relation queries the response was YES. [2022-11-20 10:32:58,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 1506 events. 56/1506 cut-off events. For 28/33 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7504 event pairs, 0 based on Foata normal form. 6/1352 useless extension candidates. Maximal degree in co-relation 1639. Up to 22 conditions per place. [2022-11-20 10:32:58,256 INFO L137 encePairwiseOnDemand]: 438/453 looper letters, 71 selfloop transitions, 40 changer transitions 0/474 dead transitions. [2022-11-20 10:32:58,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 474 transitions, 1290 flow [2022-11-20 10:32:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:32:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:32:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7353 transitions. [2022-11-20 10:32:58,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9017660044150111 [2022-11-20 10:32:58,272 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7353 transitions. [2022-11-20 10:32:58,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7353 transitions. [2022-11-20 10:32:58,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:58,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7353 transitions. [2022-11-20 10:32:58,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 408.5) internal successors, (7353), 18 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,323 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,323 INFO L175 Difference]: Start difference. First operand has 391 places, 397 transitions, 852 flow. Second operand 18 states and 7353 transitions. [2022-11-20 10:32:58,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 474 transitions, 1290 flow [2022-11-20 10:32:58,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 474 transitions, 1284 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:32:58,333 INFO L231 Difference]: Finished difference. Result has 409 places, 424 transitions, 1084 flow [2022-11-20 10:32:58,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1084, PETRI_PLACES=409, PETRI_TRANSITIONS=424} [2022-11-20 10:32:58,335 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 0 predicate places. [2022-11-20 10:32:58,335 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 424 transitions, 1084 flow [2022-11-20 10:32:58,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 404.6666666666667) internal successors, (4856), 12 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:58,338 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:58,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:32:58,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:58,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:32:58,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:58,544 INFO L85 PathProgramCache]: Analyzing trace with hash 726248235, now seen corresponding path program 1 times [2022-11-20 10:32:58,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:58,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565886419] [2022-11-20 10:32:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:58,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:58,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:58,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565886419] [2022-11-20 10:32:58,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565886419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:58,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654549449] [2022-11-20 10:32:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:58,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:58,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:58,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:58,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:32:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:58,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:32:58,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:58,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:58,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654549449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:58,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:32:58,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:32:58,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351798770] [2022-11-20 10:32:58,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:58,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:32:58,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:32:58,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:32:58,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-20 10:32:58,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 424 transitions, 1084 flow. Second operand has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:58,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-20 10:32:58,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:59,366 INFO L130 PetriNetUnfolder]: 56/1498 cut-off events. [2022-11-20 10:32:59,366 INFO L131 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2022-11-20 10:32:59,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 1498 events. 56/1498 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7466 event pairs, 0 based on Foata normal form. 8/1346 useless extension candidates. Maximal degree in co-relation 1646. Up to 44 conditions per place. [2022-11-20 10:32:59,382 INFO L137 encePairwiseOnDemand]: 442/453 looper letters, 39 selfloop transitions, 27 changer transitions 0/429 dead transitions. [2022-11-20 10:32:59,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 429 transitions, 1195 flow [2022-11-20 10:32:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:32:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:32:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2861 transitions. [2022-11-20 10:32:59,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.902239041311889 [2022-11-20 10:32:59,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2861 transitions. [2022-11-20 10:32:59,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2861 transitions. [2022-11-20 10:32:59,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:59,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2861 transitions. [2022-11-20 10:32:59,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 408.7142857142857) internal successors, (2861), 7 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:59,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:59,406 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:59,406 INFO L175 Difference]: Start difference. First operand has 409 places, 424 transitions, 1084 flow. Second operand 7 states and 2861 transitions. [2022-11-20 10:32:59,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 429 transitions, 1195 flow [2022-11-20 10:32:59,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 429 transitions, 1121 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 10:32:59,460 INFO L231 Difference]: Finished difference. Result has 404 places, 416 transitions, 1010 flow [2022-11-20 10:32:59,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1010, PETRI_PLACES=404, PETRI_TRANSITIONS=416} [2022-11-20 10:32:59,462 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -5 predicate places. [2022-11-20 10:32:59,462 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 416 transitions, 1010 flow [2022-11-20 10:32:59,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:59,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:59,464 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:59,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:59,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:59,669 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:32:59,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:59,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1544938052, now seen corresponding path program 2 times [2022-11-20 10:32:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:59,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037272765] [2022-11-20 10:32:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:59,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:59,988 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:59,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:59,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037272765] [2022-11-20 10:32:59,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037272765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:59,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198977712] [2022-11-20 10:32:59,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:32:59,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:59,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:59,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:00,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:33:00,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:33:00,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:00,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:33:00,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:33:00,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:33:00,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198977712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:00,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:00,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2022-11-20 10:33:00,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009752904] [2022-11-20 10:33:00,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:00,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:33:00,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:00,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:33:00,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:33:00,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 453 [2022-11-20 10:33:00,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 416 transitions, 1010 flow. Second operand has 17 states, 17 states have (on average 376.8235294117647) internal successors, (6406), 17 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:00,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:00,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 453 [2022-11-20 10:33:00,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:02,550 INFO L130 PetriNetUnfolder]: 295/4286 cut-off events. [2022-11-20 10:33:02,550 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-11-20 10:33:02,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 4286 events. 295/4286 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 35548 event pairs, 105 based on Foata normal form. 4/3695 useless extension candidates. Maximal degree in co-relation 4797. Up to 70 conditions per place. [2022-11-20 10:33:02,591 INFO L137 encePairwiseOnDemand]: 433/453 looper letters, 157 selfloop transitions, 65 changer transitions 0/560 dead transitions. [2022-11-20 10:33:02,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 560 transitions, 1819 flow [2022-11-20 10:33:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 10:33:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-20 10:33:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 18130 transitions. [2022-11-20 10:33:02,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8337932303164092 [2022-11-20 10:33:02,627 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 18130 transitions. [2022-11-20 10:33:02,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 18130 transitions. [2022-11-20 10:33:02,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:02,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 18130 transitions. [2022-11-20 10:33:02,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 377.7083333333333) internal successors, (18130), 48 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:02,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 453.0) internal successors, (22197), 49 states have internal predecessors, (22197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:02,803 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 453.0) internal successors, (22197), 49 states have internal predecessors, (22197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:02,804 INFO L175 Difference]: Start difference. First operand has 404 places, 416 transitions, 1010 flow. Second operand 48 states and 18130 transitions. [2022-11-20 10:33:02,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 560 transitions, 1819 flow [2022-11-20 10:33:02,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 560 transitions, 1776 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:33:02,816 INFO L231 Difference]: Finished difference. Result has 449 places, 441 transitions, 1225 flow [2022-11-20 10:33:02,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1225, PETRI_PLACES=449, PETRI_TRANSITIONS=441} [2022-11-20 10:33:02,818 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 40 predicate places. [2022-11-20 10:33:02,818 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 441 transitions, 1225 flow [2022-11-20 10:33:02,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 376.8235294117647) internal successors, (6406), 17 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:02,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:02,820 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:02,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:03,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:03,026 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:33:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 854246794, now seen corresponding path program 1 times [2022-11-20 10:33:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:03,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583480153] [2022-11-20 10:33:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:03,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:03,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583480153] [2022-11-20 10:33:03,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583480153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:03,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:03,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:03,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750694124] [2022-11-20 10:33:03,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:03,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:03,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:03,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:03,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-20 10:33:03,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 441 transitions, 1225 flow. Second operand has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:03,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:03,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-20 10:33:03,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:04,085 INFO L130 PetriNetUnfolder]: 141/3432 cut-off events. [2022-11-20 10:33:04,085 INFO L131 PetriNetUnfolder]: For 166/180 co-relation queries the response was YES. [2022-11-20 10:33:04,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3980 conditions, 3432 events. 141/3432 cut-off events. For 166/180 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 25832 event pairs, 0 based on Foata normal form. 0/3040 useless extension candidates. Maximal degree in co-relation 3897. Up to 197 conditions per place. [2022-11-20 10:33:04,122 INFO L137 encePairwiseOnDemand]: 440/453 looper letters, 38 selfloop transitions, 9 changer transitions 0/461 dead transitions. [2022-11-20 10:33:04,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 461 transitions, 1362 flow [2022-11-20 10:33:04,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:33:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2061 transitions. [2022-11-20 10:33:04,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909933774834437 [2022-11-20 10:33:04,128 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2061 transitions. [2022-11-20 10:33:04,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2061 transitions. [2022-11-20 10:33:04,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:04,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2061 transitions. [2022-11-20 10:33:04,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 412.2) internal successors, (2061), 5 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,140 INFO L175 Difference]: Start difference. First operand has 449 places, 441 transitions, 1225 flow. Second operand 5 states and 2061 transitions. [2022-11-20 10:33:04,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 461 transitions, 1362 flow [2022-11-20 10:33:04,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 461 transitions, 1279 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-11-20 10:33:04,153 INFO L231 Difference]: Finished difference. Result has 442 places, 448 transitions, 1209 flow [2022-11-20 10:33:04,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1209, PETRI_PLACES=442, PETRI_TRANSITIONS=448} [2022-11-20 10:33:04,154 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 33 predicate places. [2022-11-20 10:33:04,155 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 448 transitions, 1209 flow [2022-11-20 10:33:04,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:04,157 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:04,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:33:04,157 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:33:04,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:04,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1169602762, now seen corresponding path program 1 times [2022-11-20 10:33:04,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:04,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823505769] [2022-11-20 10:33:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:04,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:04,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:04,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823505769] [2022-11-20 10:33:04,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823505769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:04,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285360312] [2022-11-20 10:33:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:04,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:04,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:04,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:04,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:33:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:04,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:33:04,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:33:04,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:04,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285360312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:04,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:04,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2022-11-20 10:33:04,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537566664] [2022-11-20 10:33:04,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:04,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:33:04,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:33:04,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:33:04,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 453 [2022-11-20 10:33:04,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 448 transitions, 1209 flow. Second operand has 9 states, 9 states have (on average 365.8888888888889) internal successors, (3293), 9 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:04,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 453 [2022-11-20 10:33:04,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:08,698 INFO L130 PetriNetUnfolder]: 1128/15384 cut-off events. [2022-11-20 10:33:08,698 INFO L131 PetriNetUnfolder]: For 632/632 co-relation queries the response was YES. [2022-11-20 10:33:08,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17699 conditions, 15384 events. 1128/15384 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 187434 event pairs, 420 based on Foata normal form. 0/13186 useless extension candidates. Maximal degree in co-relation 17610. Up to 851 conditions per place. [2022-11-20 10:33:08,879 INFO L137 encePairwiseOnDemand]: 440/453 looper letters, 147 selfloop transitions, 24 changer transitions 0/510 dead transitions. [2022-11-20 10:33:08,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 510 transitions, 1771 flow [2022-11-20 10:33:08,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:33:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 10:33:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4816 transitions. [2022-11-20 10:33:08,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177958906435727 [2022-11-20 10:33:08,893 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4816 transitions. [2022-11-20 10:33:08,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4816 transitions. [2022-11-20 10:33:08,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:08,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4816 transitions. [2022-11-20 10:33:08,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 370.46153846153845) internal successors, (4816), 13 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 453.0) internal successors, (6342), 14 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,924 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 453.0) internal successors, (6342), 14 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,924 INFO L175 Difference]: Start difference. First operand has 442 places, 448 transitions, 1209 flow. Second operand 13 states and 4816 transitions. [2022-11-20 10:33:08,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 510 transitions, 1771 flow [2022-11-20 10:33:08,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 510 transitions, 1763 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:33:08,940 INFO L231 Difference]: Finished difference. Result has 459 places, 454 transitions, 1296 flow [2022-11-20 10:33:08,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1296, PETRI_PLACES=459, PETRI_TRANSITIONS=454} [2022-11-20 10:33:08,943 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 50 predicate places. [2022-11-20 10:33:08,943 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 454 transitions, 1296 flow [2022-11-20 10:33:08,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 365.8888888888889) internal successors, (3293), 9 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:08,945 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:08,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:09,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:33:09,152 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:33:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash -153597637, now seen corresponding path program 1 times [2022-11-20 10:33:09,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:09,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517412404] [2022-11-20 10:33:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:33:09,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:09,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517412404] [2022-11-20 10:33:09,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517412404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:09,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394109401] [2022-11-20 10:33:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:09,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:09,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:09,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:09,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:33:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:09,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:33:09,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:09,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:10,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394109401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:10,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:10,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-11-20 10:33:10,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093662817] [2022-11-20 10:33:10,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:10,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 10:33:10,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:10,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 10:33:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:33:10,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 453 [2022-11-20 10:33:10,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 454 transitions, 1296 flow. Second operand has 25 states, 25 states have (on average 346.56) internal successors, (8664), 25 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:10,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:10,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 453 [2022-11-20 10:33:10,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:18,067 INFO L130 PetriNetUnfolder]: 2514/33622 cut-off events. [2022-11-20 10:33:18,067 INFO L131 PetriNetUnfolder]: For 1092/1092 co-relation queries the response was YES. [2022-11-20 10:33:18,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38840 conditions, 33622 events. 2514/33622 cut-off events. For 1092/1092 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 481130 event pairs, 945 based on Foata normal form. 35/28743 useless extension candidates. Maximal degree in co-relation 38745. Up to 630 conditions per place. [2022-11-20 10:33:18,440 INFO L137 encePairwiseOnDemand]: 420/453 looper letters, 232 selfloop transitions, 91 changer transitions 0/630 dead transitions. [2022-11-20 10:33:18,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 630 transitions, 2528 flow [2022-11-20 10:33:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 10:33:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-20 10:33:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 14616 transitions. [2022-11-20 10:33:18,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7682119205298014 [2022-11-20 10:33:18,468 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 14616 transitions. [2022-11-20 10:33:18,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 14616 transitions. [2022-11-20 10:33:18,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:18,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 14616 transitions. [2022-11-20 10:33:18,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 348.0) internal successors, (14616), 42 states have internal predecessors, (14616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:18,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 453.0) internal successors, (19479), 43 states have internal predecessors, (19479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:18,550 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 453.0) internal successors, (19479), 43 states have internal predecessors, (19479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:18,550 INFO L175 Difference]: Start difference. First operand has 459 places, 454 transitions, 1296 flow. Second operand 42 states and 14616 transitions. [2022-11-20 10:33:18,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 630 transitions, 2528 flow [2022-11-20 10:33:18,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 630 transitions, 2506 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:33:18,573 INFO L231 Difference]: Finished difference. Result has 510 places, 500 transitions, 1804 flow [2022-11-20 10:33:18,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1804, PETRI_PLACES=510, PETRI_TRANSITIONS=500} [2022-11-20 10:33:18,575 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 101 predicate places. [2022-11-20 10:33:18,575 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 500 transitions, 1804 flow [2022-11-20 10:33:18,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 346.56) internal successors, (8664), 25 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:18,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:18,578 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:18,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:18,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:18,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:33:18,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:18,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1042247607, now seen corresponding path program 1 times [2022-11-20 10:33:18,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405966615] [2022-11-20 10:33:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:18,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:19,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:19,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405966615] [2022-11-20 10:33:19,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405966615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:19,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71894318] [2022-11-20 10:33:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:19,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:19,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:19,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:19,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:33:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:19,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:33:19,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:19,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:19,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71894318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:19,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:19,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 10:33:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645915951] [2022-11-20 10:33:19,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:19,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:33:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:33:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:33:19,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-20 10:33:19,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 500 transitions, 1804 flow. Second operand has 32 states, 32 states have (on average 405.28125) internal successors, (12969), 32 states have internal predecessors, (12969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:19,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:19,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-20 10:33:19,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:28,878 INFO L130 PetriNetUnfolder]: 1201/28701 cut-off events. [2022-11-20 10:33:28,878 INFO L131 PetriNetUnfolder]: For 4434/4569 co-relation queries the response was YES. [2022-11-20 10:33:29,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34494 conditions, 28701 events. 1201/28701 cut-off events. For 4434/4569 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 369596 event pairs, 0 based on Foata normal form. 24/25485 useless extension candidates. Maximal degree in co-relation 34386. Up to 376 conditions per place. [2022-11-20 10:33:29,337 INFO L137 encePairwiseOnDemand]: 441/453 looper letters, 216 selfloop transitions, 116 changer transitions 0/749 dead transitions. [2022-11-20 10:33:29,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 749 transitions, 3671 flow [2022-11-20 10:33:29,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 10:33:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 10:33:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 17998 transitions. [2022-11-20 10:33:29,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9029700983343367 [2022-11-20 10:33:29,360 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 17998 transitions. [2022-11-20 10:33:29,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 17998 transitions. [2022-11-20 10:33:29,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:29,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 17998 transitions. [2022-11-20 10:33:29,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 409.04545454545456) internal successors, (17998), 44 states have internal predecessors, (17998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:29,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 453.0) internal successors, (20385), 45 states have internal predecessors, (20385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:29,431 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 453.0) internal successors, (20385), 45 states have internal predecessors, (20385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:29,432 INFO L175 Difference]: Start difference. First operand has 510 places, 500 transitions, 1804 flow. Second operand 44 states and 17998 transitions. [2022-11-20 10:33:29,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 749 transitions, 3671 flow [2022-11-20 10:33:29,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 749 transitions, 3546 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-11-20 10:33:29,499 INFO L231 Difference]: Finished difference. Result has 549 places, 568 transitions, 2514 flow [2022-11-20 10:33:29,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2514, PETRI_PLACES=549, PETRI_TRANSITIONS=568} [2022-11-20 10:33:29,504 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 140 predicate places. [2022-11-20 10:33:29,505 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 568 transitions, 2514 flow [2022-11-20 10:33:29,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 405.28125) internal successors, (12969), 32 states have internal predecessors, (12969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:29,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:29,508 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:29,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:29,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:29,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:33:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1114547946, now seen corresponding path program 1 times [2022-11-20 10:33:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:29,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349797826] [2022-11-20 10:33:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:29,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:33:29,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:29,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349797826] [2022-11-20 10:33:29,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349797826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:29,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993733244] [2022-11-20 10:33:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:29,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:29,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:29,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:29,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:33:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:30,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:33:30,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:33:30,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:30,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993733244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:30,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:30,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:33:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580833132] [2022-11-20 10:33:30,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:33:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:33:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:33:30,167 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-20 10:33:30,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 568 transitions, 2514 flow. Second operand has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:30,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:30,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-20 10:33:30,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:37,501 INFO L130 PetriNetUnfolder]: 1201/28581 cut-off events. [2022-11-20 10:33:37,501 INFO L131 PetriNetUnfolder]: For 4608/4743 co-relation queries the response was YES. [2022-11-20 10:33:38,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35205 conditions, 28581 events. 1201/28581 cut-off events. For 4608/4743 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 367790 event pairs, 0 based on Foata normal form. 120/25461 useless extension candidates. Maximal degree in co-relation 35088. Up to 840 conditions per place. [2022-11-20 10:33:38,131 INFO L137 encePairwiseOnDemand]: 442/453 looper letters, 41 selfloop transitions, 33 changer transitions 0/574 dead transitions. [2022-11-20 10:33:38,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 574 transitions, 2653 flow [2022-11-20 10:33:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:33:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2861 transitions. [2022-11-20 10:33:38,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.902239041311889 [2022-11-20 10:33:38,145 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2861 transitions. [2022-11-20 10:33:38,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2861 transitions. [2022-11-20 10:33:38,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:38,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2861 transitions. [2022-11-20 10:33:38,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 408.7142857142857) internal successors, (2861), 7 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:38,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:38,155 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:38,155 INFO L175 Difference]: Start difference. First operand has 549 places, 568 transitions, 2514 flow. Second operand 7 states and 2861 transitions. [2022-11-20 10:33:38,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 574 transitions, 2653 flow [2022-11-20 10:33:38,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 574 transitions, 2570 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-20 10:33:38,200 INFO L231 Difference]: Finished difference. Result has 538 places, 563 transitions, 2459 flow [2022-11-20 10:33:38,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2459, PETRI_PLACES=538, PETRI_TRANSITIONS=563} [2022-11-20 10:33:38,203 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 129 predicate places. [2022-11-20 10:33:38,203 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 563 transitions, 2459 flow [2022-11-20 10:33:38,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:38,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:38,204 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:38,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:38,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:33:38,411 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:33:38,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1118356694, now seen corresponding path program 2 times [2022-11-20 10:33:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:38,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155703688] [2022-11-20 10:33:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:38,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:38,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155703688] [2022-11-20 10:33:38,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155703688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:38,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112149825] [2022-11-20 10:33:38,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:38,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:38,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:38,981 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:39,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2d8e1d2-915d-4a4c-9fda-b70dc6915173/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:33:39,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:33:39,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:39,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:33:39,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:39,404 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 10:33:39,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 10:33:39,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112149825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:39,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:39,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 22 [2022-11-20 10:33:39,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996429750] [2022-11-20 10:33:39,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:39,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:33:39,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:39,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:33:39,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:33:39,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 453 [2022-11-20 10:33:39,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 563 transitions, 2459 flow. Second operand has 22 states, 22 states have (on average 346.8181818181818) internal successors, (7630), 22 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:39,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:39,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 453 [2022-11-20 10:33:39,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand