./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:38:02,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:38:02,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:38:02,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:38:02,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:38:02,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:38:02,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:38:02,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:38:02,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:38:02,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:38:02,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:38:02,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:38:02,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:38:02,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:38:02,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:38:02,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:38:02,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:38:02,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:38:02,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:38:03,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:38:03,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:38:03,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:38:03,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:38:03,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:38:03,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:38:03,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:38:03,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:38:03,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:38:03,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:38:03,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:38:03,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:38:03,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:38:03,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:38:03,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:38:03,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:38:03,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:38:03,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:38:03,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:38:03,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:38:03,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:38:03,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:38:03,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:38:03,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:38:03,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:38:03,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:38:03,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:38:03,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:38:03,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:38:03,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:38:03,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:38:03,073 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:38:03,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:38:03,074 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:38:03,074 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:38:03,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:38:03,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:38:03,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:38:03,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:38:03,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:38:03,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:38:03,076 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:38:03,076 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:38:03,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:38:03,076 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:38:03,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:38:03,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:38:03,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:38:03,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:38:03,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:03,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:38:03,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:38:03,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:38:03,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:38:03,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:38:03,080 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:38:03,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:38:03,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:38:03,081 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_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2022-11-18 20:38:03,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:38:03,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:38:03,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:38:03,403 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:38:03,404 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:38:03,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-18 20:38:03,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/data/50c93adba/336d37dcf9484528af78816095b70f34/FLAG942346ce1 [2022-11-18 20:38:04,118 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:38:04,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-18 20:38:04,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/data/50c93adba/336d37dcf9484528af78816095b70f34/FLAG942346ce1 [2022-11-18 20:38:04,403 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/data/50c93adba/336d37dcf9484528af78816095b70f34 [2022-11-18 20:38:04,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:38:04,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:38:04,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:04,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:38:04,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:38:04,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:04" (1/1) ... [2022-11-18 20:38:04,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f278b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:04, skipping insertion in model container [2022-11-18 20:38:04,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:04" (1/1) ... [2022-11-18 20:38:04,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:38:04,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:38:05,022 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-18 20:38:05,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:05,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:38:05,131 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-18 20:38:05,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:05,220 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:38:05,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05 WrapperNode [2022-11-18 20:38:05,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:05,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:05,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:38:05,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:38:05,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,296 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2022-11-18 20:38:05,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:05,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:38:05,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:38:05,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:38:05,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:38:05,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:38:05,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:38:05,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:38:05,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (1/1) ... [2022-11-18 20:38:05,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:05,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:05,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:38:05,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:38:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-18 20:38:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-18 20:38:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:38:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:38:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-18 20:38:05,413 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-18 20:38:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:38:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:38:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:38:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:38:05,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:38:05,416 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:38:05,568 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:38:05,570 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:38:06,098 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:38:06,112 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:38:06,112 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-18 20:38:06,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:06 BoogieIcfgContainer [2022-11-18 20:38:06,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:38:06,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:38:06,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:38:06,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:38:06,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:38:04" (1/3) ... [2022-11-18 20:38:06,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d649342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:06, skipping insertion in model container [2022-11-18 20:38:06,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:05" (2/3) ... [2022-11-18 20:38:06,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d649342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:06, skipping insertion in model container [2022-11-18 20:38:06,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:06" (3/3) ... [2022-11-18 20:38:06,126 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2022-11-18 20:38:06,133 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:38:06,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:38:06,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 20:38:06,141 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:38:06,290 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:38:06,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 244 transitions, 510 flow [2022-11-18 20:38:06,574 INFO L130 PetriNetUnfolder]: 52/468 cut-off events. [2022-11-18 20:38:06,575 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2022-11-18 20:38:06,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 468 events. 52/468 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1913 event pairs, 0 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2022-11-18 20:38:06,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 244 transitions, 510 flow [2022-11-18 20:38:06,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 244 transitions, 510 flow [2022-11-18 20:38:06,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:38:06,630 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;@6ce977d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:38:06,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 20:38:06,643 INFO L130 PetriNetUnfolder]: 4/82 cut-off events. [2022-11-18 20:38:06,643 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:38:06,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:06,644 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] [2022-11-18 20:38:06,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:38:06,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:06,650 INFO L85 PathProgramCache]: Analyzing trace with hash 537706274, now seen corresponding path program 1 times [2022-11-18 20:38:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:06,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145360413] [2022-11-18 20:38:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:06,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:07,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:07,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145360413] [2022-11-18 20:38:07,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145360413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:07,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:07,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:07,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721584129] [2022-11-18 20:38:07,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:07,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:07,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 244 [2022-11-18 20:38:07,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 244 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:07,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:07,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 244 [2022-11-18 20:38:07,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:07,367 INFO L130 PetriNetUnfolder]: 9/316 cut-off events. [2022-11-18 20:38:07,368 INFO L131 PetriNetUnfolder]: For 40/87 co-relation queries the response was YES. [2022-11-18 20:38:07,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 316 events. 9/316 cut-off events. For 40/87 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 915 event pairs, 0 based on Foata normal form. 46/328 useless extension candidates. Maximal degree in co-relation 212. Up to 15 conditions per place. [2022-11-18 20:38:07,373 INFO L137 encePairwiseOnDemand]: 221/244 looper letters, 14 selfloop transitions, 4 changer transitions 0/227 dead transitions. [2022-11-18 20:38:07,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 227 transitions, 512 flow [2022-11-18 20:38:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:38:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1083 transitions. [2022-11-18 20:38:07,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877049180327868 [2022-11-18 20:38:07,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1083 transitions. [2022-11-18 20:38:07,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1083 transitions. [2022-11-18 20:38:07,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:07,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1083 transitions. [2022-11-18 20:38:07,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.6) internal successors, (1083), 5 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:07,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:07,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:07,445 INFO L175 Difference]: Start difference. First operand has 226 places, 244 transitions, 510 flow. Second operand 5 states and 1083 transitions. [2022-11-18 20:38:07,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 227 transitions, 512 flow [2022-11-18 20:38:07,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 227 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:38:07,458 INFO L231 Difference]: Finished difference. Result has 228 places, 225 transitions, 484 flow [2022-11-18 20:38:07,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=228, PETRI_TRANSITIONS=225} [2022-11-18 20:38:07,465 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 2 predicate places. [2022-11-18 20:38:07,465 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 225 transitions, 484 flow [2022-11-18 20:38:07,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:07,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:07,467 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] [2022-11-18 20:38:07,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:38:07,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:38:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:07,469 INFO L85 PathProgramCache]: Analyzing trace with hash 757933372, now seen corresponding path program 1 times [2022-11-18 20:38:07,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:07,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767113659] [2022-11-18 20:38:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:07,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:38:07,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:38:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:38:07,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:38:07,641 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:38:07,643 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-18 20:38:07,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-18 20:38:07,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-18 20:38:07,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-18 20:38:07,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-18 20:38:07,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-18 20:38:07,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-18 20:38:07,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-18 20:38:07,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-18 20:38:07,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-18 20:38:07,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-18 20:38:07,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-18 20:38:07,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-18 20:38:07,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2022-11-18 20:38:07,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-18 20:38:07,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-18 20:38:07,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-18 20:38:07,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-18 20:38:07,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:38:07,661 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 20:38:07,665 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:38:07,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:38:07,790 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 20:38:07,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 374 transitions, 796 flow [2022-11-18 20:38:08,236 INFO L130 PetriNetUnfolder]: 191/1429 cut-off events. [2022-11-18 20:38:08,236 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2022-11-18 20:38:08,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 1429 events. 191/1429 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9272 event pairs, 2 based on Foata normal form. 0/1148 useless extension candidates. Maximal degree in co-relation 883. Up to 32 conditions per place. [2022-11-18 20:38:08,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 374 transitions, 796 flow [2022-11-18 20:38:08,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 374 transitions, 796 flow [2022-11-18 20:38:08,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:38:08,294 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;@6ce977d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:38:08,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-18 20:38:08,309 INFO L130 PetriNetUnfolder]: 4/82 cut-off events. [2022-11-18 20:38:08,309 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:38:08,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:08,310 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] [2022-11-18 20:38:08,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-18 20:38:08,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1672574062, now seen corresponding path program 1 times [2022-11-18 20:38:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:08,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842160508] [2022-11-18 20:38:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:08,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:08,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:08,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842160508] [2022-11-18 20:38:08,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842160508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:08,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:08,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:08,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142776553] [2022-11-18 20:38:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:08,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:08,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:08,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-18 20:38:08,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 374 transitions, 796 flow. Second operand has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:08,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:08,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-18 20:38:08,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:08,995 INFO L130 PetriNetUnfolder]: 66/1095 cut-off events. [2022-11-18 20:38:08,995 INFO L131 PetriNetUnfolder]: For 295/616 co-relation queries the response was YES. [2022-11-18 20:38:09,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1095 events. 66/1095 cut-off events. For 295/616 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6765 event pairs, 2 based on Foata normal form. 394/1340 useless extension candidates. Maximal degree in co-relation 819. Up to 85 conditions per place. [2022-11-18 20:38:09,021 INFO L137 encePairwiseOnDemand]: 339/374 looper letters, 27 selfloop transitions, 4 changer transitions 0/351 dead transitions. [2022-11-18 20:38:09,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 351 transitions, 812 flow [2022-11-18 20:38:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:38:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1663 transitions. [2022-11-18 20:38:09,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8893048128342246 [2022-11-18 20:38:09,025 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1663 transitions. [2022-11-18 20:38:09,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1663 transitions. [2022-11-18 20:38:09,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:09,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1663 transitions. [2022-11-18 20:38:09,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.6) internal successors, (1663), 5 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,036 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,037 INFO L175 Difference]: Start difference. First operand has 341 places, 374 transitions, 796 flow. Second operand 5 states and 1663 transitions. [2022-11-18 20:38:09,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 351 transitions, 812 flow [2022-11-18 20:38:09,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 351 transitions, 812 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:38:09,050 INFO L231 Difference]: Finished difference. Result has 346 places, 347 transitions, 768 flow [2022-11-18 20:38:09,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=768, PETRI_PLACES=346, PETRI_TRANSITIONS=347} [2022-11-18 20:38:09,052 INFO L288 CegarLoopForPetriNet]: 341 programPoint places, 5 predicate places. [2022-11-18 20:38:09,052 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 347 transitions, 768 flow [2022-11-18 20:38:09,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:09,053 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:09,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:38:09,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-18 20:38:09,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:09,054 INFO L85 PathProgramCache]: Analyzing trace with hash 581824412, now seen corresponding path program 1 times [2022-11-18 20:38:09,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:09,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789779533] [2022-11-18 20:38:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:09,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:38:09,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:09,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789779533] [2022-11-18 20:38:09,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789779533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:09,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:09,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:09,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218504329] [2022-11-18 20:38:09,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:09,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:09,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:09,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-18 20:38:09,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 347 transitions, 768 flow. Second operand has 4 states, 4 states have (on average 323.75) internal successors, (1295), 4 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:09,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-18 20:38:09,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:09,603 INFO L130 PetriNetUnfolder]: 66/1094 cut-off events. [2022-11-18 20:38:09,604 INFO L131 PetriNetUnfolder]: For 299/607 co-relation queries the response was YES. [2022-11-18 20:38:09,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 1094 events. 66/1094 cut-off events. For 299/607 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6771 event pairs, 2 based on Foata normal form. 13/962 useless extension candidates. Maximal degree in co-relation 1206. Up to 74 conditions per place. [2022-11-18 20:38:09,632 INFO L137 encePairwiseOnDemand]: 368/374 looper letters, 19 selfloop transitions, 8 changer transitions 0/347 dead transitions. [2022-11-18 20:38:09,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 347 transitions, 820 flow [2022-11-18 20:38:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:38:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1625 transitions. [2022-11-18 20:38:09,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8689839572192514 [2022-11-18 20:38:09,637 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1625 transitions. [2022-11-18 20:38:09,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1625 transitions. [2022-11-18 20:38:09,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:09,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1625 transitions. [2022-11-18 20:38:09,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,652 INFO L175 Difference]: Start difference. First operand has 346 places, 347 transitions, 768 flow. Second operand 5 states and 1625 transitions. [2022-11-18 20:38:09,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 347 transitions, 820 flow [2022-11-18 20:38:09,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 347 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:38:09,661 INFO L231 Difference]: Finished difference. Result has 349 places, 347 transitions, 786 flow [2022-11-18 20:38:09,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=349, PETRI_TRANSITIONS=347} [2022-11-18 20:38:09,663 INFO L288 CegarLoopForPetriNet]: 341 programPoint places, 8 predicate places. [2022-11-18 20:38:09,663 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 347 transitions, 786 flow [2022-11-18 20:38:09,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 323.75) internal successors, (1295), 4 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:09,664 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:09,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:38:09,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-18 20:38:09,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:09,665 INFO L85 PathProgramCache]: Analyzing trace with hash 856688449, now seen corresponding path program 1 times [2022-11-18 20:38:09,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:09,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743624217] [2022-11-18 20:38:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:09,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:09,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:09,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743624217] [2022-11-18 20:38:09,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743624217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:09,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451711289] [2022-11-18 20:38:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:09,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:09,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:09,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:09,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:38:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:38:10,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:10,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:38:10,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451711289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:10,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:38:10,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:38:10,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579052914] [2022-11-18 20:38:10,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:10,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:38:10,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:10,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:38:10,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:10,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-18 20:38:10,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 347 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 322.6666666666667) internal successors, (1936), 6 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:10,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:10,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-18 20:38:10,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:10,632 INFO L130 PetriNetUnfolder]: 66/1093 cut-off events. [2022-11-18 20:38:10,632 INFO L131 PetriNetUnfolder]: For 304/599 co-relation queries the response was YES. [2022-11-18 20:38:10,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 1093 events. 66/1093 cut-off events. For 304/599 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6764 event pairs, 2 based on Foata normal form. 11/959 useless extension candidates. Maximal degree in co-relation 835. Up to 77 conditions per place. [2022-11-18 20:38:10,665 INFO L137 encePairwiseOnDemand]: 369/374 looper letters, 23 selfloop transitions, 6 changer transitions 0/349 dead transitions. [2022-11-18 20:38:10,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 349 transitions, 846 flow [2022-11-18 20:38:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:38:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:38:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2270 transitions. [2022-11-18 20:38:10,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86707410236822 [2022-11-18 20:38:10,671 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2270 transitions. [2022-11-18 20:38:10,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2270 transitions. [2022-11-18 20:38:10,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:10,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2270 transitions. [2022-11-18 20:38:10,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.2857142857143) internal successors, (2270), 7 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:10,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 374.0) internal successors, (2992), 8 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:10,685 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 374.0) internal successors, (2992), 8 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:10,685 INFO L175 Difference]: Start difference. First operand has 349 places, 347 transitions, 786 flow. Second operand 7 states and 2270 transitions. [2022-11-18 20:38:10,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 349 transitions, 846 flow [2022-11-18 20:38:10,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 349 transitions, 834 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:38:10,693 INFO L231 Difference]: Finished difference. Result has 351 places, 346 transitions, 782 flow [2022-11-18 20:38:10,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=782, PETRI_PLACES=351, PETRI_TRANSITIONS=346} [2022-11-18 20:38:10,695 INFO L288 CegarLoopForPetriNet]: 341 programPoint places, 10 predicate places. [2022-11-18 20:38:10,695 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 346 transitions, 782 flow [2022-11-18 20:38:10,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 322.6666666666667) internal successors, (1936), 6 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:10,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:10,697 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] [2022-11-18 20:38:10,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:10,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:10,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-18 20:38:10,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash -401947896, now seen corresponding path program 1 times [2022-11-18 20:38:10,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:10,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810127484] [2022-11-18 20:38:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:10,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:11,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:11,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810127484] [2022-11-18 20:38:11,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810127484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:11,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597251851] [2022-11-18 20:38:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:11,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:11,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:11,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:11,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:38:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:11,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:38:11,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:11,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:11,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597251851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:11,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:11,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:38:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684720409] [2022-11-18 20:38:11,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:38:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:38:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:38:11,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-18 20:38:11,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 346 transitions, 782 flow. Second operand has 10 states, 10 states have (on average 323.0) internal successors, (3230), 10 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:11,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:11,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-18 20:38:11,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:11,396 INFO L130 PetriNetUnfolder]: 0/129 cut-off events. [2022-11-18 20:38:11,396 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-18 20:38:11,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 129 events. 0/129 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 2/131 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-11-18 20:38:11,397 INFO L137 encePairwiseOnDemand]: 369/374 looper letters, 13 selfloop transitions, 7 changer transitions 0/123 dead transitions. [2022-11-18 20:38:11,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 123 transitions, 340 flow [2022-11-18 20:38:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:38:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:38:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2902 transitions. [2022-11-18 20:38:11,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8621509209744503 [2022-11-18 20:38:11,404 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2902 transitions. [2022-11-18 20:38:11,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2902 transitions. [2022-11-18 20:38:11,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:11,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2902 transitions. [2022-11-18 20:38:11,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 322.44444444444446) internal successors, (2902), 9 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:11,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:11,420 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:11,420 INFO L175 Difference]: Start difference. First operand has 351 places, 346 transitions, 782 flow. Second operand 9 states and 2902 transitions. [2022-11-18 20:38:11,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 123 transitions, 340 flow [2022-11-18 20:38:11,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 123 transitions, 323 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-18 20:38:11,424 INFO L231 Difference]: Finished difference. Result has 137 places, 118 transitions, 285 flow [2022-11-18 20:38:11,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=137, PETRI_TRANSITIONS=118} [2022-11-18 20:38:11,425 INFO L288 CegarLoopForPetriNet]: 341 programPoint places, -204 predicate places. [2022-11-18 20:38:11,425 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 118 transitions, 285 flow [2022-11-18 20:38:11,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 323.0) internal successors, (3230), 10 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:11,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:11,427 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:11,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:38:11,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:11,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-18 20:38:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash -571328974, now seen corresponding path program 1 times [2022-11-18 20:38:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:11,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030284773] [2022-11-18 20:38:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:38:11,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:38:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:38:11,709 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:38:11,709 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:38:11,710 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-18 20:38:11,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-11-18 20:38:11,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-11-18 20:38:11,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-11-18 20:38:11,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-11-18 20:38:11,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-11-18 20:38:11,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-11-18 20:38:11,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-11-18 20:38:11,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-11-18 20:38:11,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-11-18 20:38:11,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-11-18 20:38:11,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-11-18 20:38:11,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-11-18 20:38:11,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2022-11-18 20:38:11,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-11-18 20:38:11,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-11-18 20:38:11,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-11-18 20:38:11,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-11-18 20:38:11,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-11-18 20:38:11,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-11-18 20:38:11,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-11-18 20:38:11,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-11-18 20:38:11,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:38:11,715 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 20:38:11,716 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:38:11,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:38:11,799 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-18 20:38:11,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 504 transitions, 1086 flow [2022-11-18 20:38:13,552 INFO L130 PetriNetUnfolder]: 664/4070 cut-off events. [2022-11-18 20:38:13,552 INFO L131 PetriNetUnfolder]: For 419/462 co-relation queries the response was YES. [2022-11-18 20:38:13,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4521 conditions, 4070 events. 664/4070 cut-off events. For 419/462 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 32751 event pairs, 52 based on Foata normal form. 0/3259 useless extension candidates. Maximal degree in co-relation 2595. Up to 192 conditions per place. [2022-11-18 20:38:13,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 504 transitions, 1086 flow [2022-11-18 20:38:13,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 456 places, 504 transitions, 1086 flow [2022-11-18 20:38:13,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:38:13,706 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;@6ce977d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:38:13,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-18 20:38:13,713 INFO L130 PetriNetUnfolder]: 4/82 cut-off events. [2022-11-18 20:38:13,713 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:38:13,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:13,714 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] [2022-11-18 20:38:13,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-18 20:38:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:13,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1931897284, now seen corresponding path program 1 times [2022-11-18 20:38:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:13,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126947134] [2022-11-18 20:38:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:13,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:13,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126947134] [2022-11-18 20:38:13,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126947134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:13,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:13,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:13,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647894252] [2022-11-18 20:38:13,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:13,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:13,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:13,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:13,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:13,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 504 [2022-11-18 20:38:13,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 504 transitions, 1086 flow. Second operand has 4 states, 4 states have (on average 432.75) internal successors, (1731), 4 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:13,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:13,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 504 [2022-11-18 20:38:13,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:15,401 INFO L130 PetriNetUnfolder]: 359/3454 cut-off events. [2022-11-18 20:38:15,401 INFO L131 PetriNetUnfolder]: For 1305/1993 co-relation queries the response was YES. [2022-11-18 20:38:15,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 3454 events. 359/3454 cut-off events. For 1305/1993 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 28714 event pairs, 36 based on Foata normal form. 2387/5329 useless extension candidates. Maximal degree in co-relation 2565. Up to 421 conditions per place. [2022-11-18 20:38:15,547 INFO L137 encePairwiseOnDemand]: 457/504 looper letters, 33 selfloop transitions, 4 changer transitions 0/468 dead transitions. [2022-11-18 20:38:15,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 468 transitions, 1088 flow [2022-11-18 20:38:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:15,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:38:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2236 transitions. [2022-11-18 20:38:15,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8873015873015873 [2022-11-18 20:38:15,554 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2236 transitions. [2022-11-18 20:38:15,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2236 transitions. [2022-11-18 20:38:15,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:15,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2236 transitions. [2022-11-18 20:38:15,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 447.2) internal successors, (2236), 5 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:15,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:15,568 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:15,569 INFO L175 Difference]: Start difference. First operand has 456 places, 504 transitions, 1086 flow. Second operand 5 states and 2236 transitions. [2022-11-18 20:38:15,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 468 transitions, 1088 flow [2022-11-18 20:38:15,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 468 transitions, 1088 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:38:15,580 INFO L231 Difference]: Finished difference. Result has 460 places, 464 transitions, 1032 flow [2022-11-18 20:38:15,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1032, PETRI_PLACES=460, PETRI_TRANSITIONS=464} [2022-11-18 20:38:15,582 INFO L288 CegarLoopForPetriNet]: 456 programPoint places, 4 predicate places. [2022-11-18 20:38:15,582 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 464 transitions, 1032 flow [2022-11-18 20:38:15,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 432.75) internal successors, (1731), 4 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:15,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:15,599 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:15,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:38:15,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-18 20:38:15,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:15,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1682873802, now seen corresponding path program 1 times [2022-11-18 20:38:15,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:15,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703596149] [2022-11-18 20:38:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:15,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:38:15,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:15,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703596149] [2022-11-18 20:38:15,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703596149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:15,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:15,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516054657] [2022-11-18 20:38:15,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:15,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:15,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 504 [2022-11-18 20:38:15,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 464 transitions, 1032 flow. Second operand has 4 states, 4 states have (on average 434.75) internal successors, (1739), 4 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:15,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:15,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 504 [2022-11-18 20:38:15,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:17,310 INFO L130 PetriNetUnfolder]: 359/3452 cut-off events. [2022-11-18 20:38:17,311 INFO L131 PetriNetUnfolder]: For 1312/1981 co-relation queries the response was YES. [2022-11-18 20:38:17,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 3452 events. 359/3452 cut-off events. For 1312/1981 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 28637 event pairs, 36 based on Foata normal form. 20/2967 useless extension candidates. Maximal degree in co-relation 4251. Up to 401 conditions per place. [2022-11-18 20:38:17,455 INFO L137 encePairwiseOnDemand]: 498/504 looper letters, 25 selfloop transitions, 8 changer transitions 0/464 dead transitions. [2022-11-18 20:38:17,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 464 transitions, 1096 flow [2022-11-18 20:38:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:38:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2186 transitions. [2022-11-18 20:38:17,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8674603174603175 [2022-11-18 20:38:17,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2186 transitions. [2022-11-18 20:38:17,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2186 transitions. [2022-11-18 20:38:17,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:17,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2186 transitions. [2022-11-18 20:38:17,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 437.2) internal successors, (2186), 5 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) [2022-11-18 20:38:17,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:17,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:17,472 INFO L175 Difference]: Start difference. First operand has 460 places, 464 transitions, 1032 flow. Second operand 5 states and 2186 transitions. [2022-11-18 20:38:17,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 464 transitions, 1096 flow [2022-11-18 20:38:17,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 464 transitions, 1094 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:38:17,481 INFO L231 Difference]: Finished difference. Result has 463 places, 464 transitions, 1050 flow [2022-11-18 20:38:17,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1050, PETRI_PLACES=463, PETRI_TRANSITIONS=464} [2022-11-18 20:38:17,483 INFO L288 CegarLoopForPetriNet]: 456 programPoint places, 7 predicate places. [2022-11-18 20:38:17,483 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 464 transitions, 1050 flow [2022-11-18 20:38:17,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 434.75) internal successors, (1739), 4 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:17,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:17,484 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:17,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:38:17,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-18 20:38:17,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash 629481673, now seen corresponding path program 1 times [2022-11-18 20:38:17,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:17,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605434993] [2022-11-18 20:38:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:17,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:17,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:17,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605434993] [2022-11-18 20:38:17,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605434993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:17,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264366756] [2022-11-18 20:38:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:17,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:17,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:17,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:17,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:38:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:17,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:38:17,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:17,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:38:17,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264366756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:17,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:38:17,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:38:17,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514398806] [2022-11-18 20:38:17,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:17,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:38:17,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:38:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:17,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 504 [2022-11-18 20:38:17,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 464 transitions, 1050 flow. Second operand has 6 states, 6 states have (on average 433.6666666666667) internal successors, (2602), 6 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:17,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:17,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 504 [2022-11-18 20:38:17,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:19,344 INFO L130 PetriNetUnfolder]: 359/3450 cut-off events. [2022-11-18 20:38:19,344 INFO L131 PetriNetUnfolder]: For 1323/1973 co-relation queries the response was YES. [2022-11-18 20:38:19,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4351 conditions, 3450 events. 359/3450 cut-off events. For 1323/1973 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 28656 event pairs, 36 based on Foata normal form. 14/2959 useless extension candidates. Maximal degree in co-relation 2586. Up to 407 conditions per place. [2022-11-18 20:38:19,486 INFO L137 encePairwiseOnDemand]: 499/504 looper letters, 29 selfloop transitions, 6 changer transitions 0/466 dead transitions. [2022-11-18 20:38:19,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 466 transitions, 1122 flow [2022-11-18 20:38:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:38:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:38:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3053 transitions. [2022-11-18 20:38:19,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8653628117913832 [2022-11-18 20:38:19,494 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3053 transitions. [2022-11-18 20:38:19,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3053 transitions. [2022-11-18 20:38:19,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:19,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3053 transitions. [2022-11-18 20:38:19,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 436.14285714285717) internal successors, (3053), 7 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:19,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 504.0) internal successors, (4032), 8 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:19,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 504.0) internal successors, (4032), 8 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:19,512 INFO L175 Difference]: Start difference. First operand has 463 places, 464 transitions, 1050 flow. Second operand 7 states and 3053 transitions. [2022-11-18 20:38:19,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 466 transitions, 1122 flow [2022-11-18 20:38:19,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 466 transitions, 1110 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:38:19,523 INFO L231 Difference]: Finished difference. Result has 465 places, 463 transitions, 1046 flow [2022-11-18 20:38:19,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1046, PETRI_PLACES=465, PETRI_TRANSITIONS=463} [2022-11-18 20:38:19,527 INFO L288 CegarLoopForPetriNet]: 456 programPoint places, 9 predicate places. [2022-11-18 20:38:19,527 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 463 transitions, 1046 flow [2022-11-18 20:38:19,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 433.6666666666667) internal successors, (2602), 6 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:19,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:19,529 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] [2022-11-18 20:38:19,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:38:19,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:38:19,735 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-18 20:38:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash -948988087, now seen corresponding path program 1 times [2022-11-18 20:38:19,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:19,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412266704] [2022-11-18 20:38:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:19,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:19,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:19,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412266704] [2022-11-18 20:38:19,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412266704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:19,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109588990] [2022-11-18 20:38:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:19,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:19,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:19,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:19,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:38:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:20,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:38:20,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:20,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:20,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109588990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:20,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:20,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:38:20,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647883591] [2022-11-18 20:38:20,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:20,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:38:20,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:20,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:38:20,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:38:20,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 504 [2022-11-18 20:38:20,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 463 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 434.0) internal successors, (4340), 10 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:20,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:20,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 504 [2022-11-18 20:38:20,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:21,319 INFO L130 PetriNetUnfolder]: 333/2830 cut-off events. [2022-11-18 20:38:21,319 INFO L131 PetriNetUnfolder]: For 1226/1433 co-relation queries the response was YES. [2022-11-18 20:38:21,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3696 conditions, 2830 events. 333/2830 cut-off events. For 1226/1433 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 21348 event pairs, 76 based on Foata normal form. 8/2417 useless extension candidates. Maximal degree in co-relation 3544. Up to 392 conditions per place. [2022-11-18 20:38:21,410 INFO L137 encePairwiseOnDemand]: 498/504 looper letters, 34 selfloop transitions, 9 changer transitions 0/474 dead transitions. [2022-11-18 20:38:21,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 474 transitions, 1170 flow [2022-11-18 20:38:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:38:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:38:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3924 transitions. [2022-11-18 20:38:21,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8650793650793651 [2022-11-18 20:38:21,419 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3924 transitions. [2022-11-18 20:38:21,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3924 transitions. [2022-11-18 20:38:21,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:21,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3924 transitions. [2022-11-18 20:38:21,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 436.0) internal successors, (3924), 9 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:21,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:21,437 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:21,437 INFO L175 Difference]: Start difference. First operand has 465 places, 463 transitions, 1046 flow. Second operand 9 states and 3924 transitions. [2022-11-18 20:38:21,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 474 transitions, 1170 flow [2022-11-18 20:38:21,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 474 transitions, 1157 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-18 20:38:21,446 INFO L231 Difference]: Finished difference. Result has 472 places, 467 transitions, 1093 flow [2022-11-18 20:38:21,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1093, PETRI_PLACES=472, PETRI_TRANSITIONS=467} [2022-11-18 20:38:21,448 INFO L288 CegarLoopForPetriNet]: 456 programPoint places, 16 predicate places. [2022-11-18 20:38:21,448 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 467 transitions, 1093 flow [2022-11-18 20:38:21,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 434.0) internal successors, (4340), 10 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:21,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:21,450 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:21,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:21,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:21,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-18 20:38:21,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:21,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1532711581, now seen corresponding path program 1 times [2022-11-18 20:38:21,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:21,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401149381] [2022-11-18 20:38:21,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:21,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:38:21,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:38:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:38:21,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:38:21,721 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:38:21,722 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-18 20:38:21,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-18 20:38:21,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-18 20:38:21,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-18 20:38:21,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-18 20:38:21,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-18 20:38:21,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-18 20:38:21,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-18 20:38:21,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-18 20:38:21,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-18 20:38:21,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-18 20:38:21,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-18 20:38:21,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-18 20:38:21,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-18 20:38:21,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-18 20:38:21,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-18 20:38:21,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-18 20:38:21,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-18 20:38:21,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-18 20:38:21,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-18 20:38:21,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-18 20:38:21,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-18 20:38:21,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-18 20:38:21,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-18 20:38:21,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-18 20:38:21,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-18 20:38:21,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:38:21,727 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 20:38:21,728 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:38:21,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 20:38:21,839 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-18 20:38:21,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 571 places, 634 transitions, 1380 flow [2022-11-18 20:38:27,805 INFO L130 PetriNetUnfolder]: 2659/13035 cut-off events. [2022-11-18 20:38:27,805 INFO L131 PetriNetUnfolder]: For 2144/2211 co-relation queries the response was YES. [2022-11-18 20:38:28,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15200 conditions, 13035 events. 2659/13035 cut-off events. For 2144/2211 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 127992 event pairs, 626 based on Foata normal form. 0/10496 useless extension candidates. Maximal degree in co-relation 8126. Up to 1024 conditions per place. [2022-11-18 20:38:28,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 571 places, 634 transitions, 1380 flow [2022-11-18 20:38:28,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 571 places, 634 transitions, 1380 flow [2022-11-18 20:38:28,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:38:28,531 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;@6ce977d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:38:28,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-11-18 20:38:28,538 INFO L130 PetriNetUnfolder]: 4/82 cut-off events. [2022-11-18 20:38:28,538 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:38:28,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:28,538 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] [2022-11-18 20:38:28,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-18 20:38:28,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:28,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1533781576, now seen corresponding path program 1 times [2022-11-18 20:38:28,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:28,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80848603] [2022-11-18 20:38:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:28,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:28,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:28,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80848603] [2022-11-18 20:38:28,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80848603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:28,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:28,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306799866] [2022-11-18 20:38:28,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:28,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:28,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:28,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:28,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:28,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-18 20:38:28,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 634 transitions, 1380 flow. Second operand has 4 states, 4 states have (on average 543.75) internal successors, (2175), 4 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:28,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:28,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-18 20:38:28,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:34,598 INFO L130 PetriNetUnfolder]: 1860/11821 cut-off events. [2022-11-18 20:38:34,599 INFO L131 PetriNetUnfolder]: For 6349/7544 co-relation queries the response was YES. [2022-11-18 20:38:35,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16079 conditions, 11821 events. 1860/11821 cut-off events. For 6349/7544 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 120665 event pairs, 324 based on Foata normal form. 12726/22778 useless extension candidates. Maximal degree in co-relation 8560. Up to 2103 conditions per place. [2022-11-18 20:38:35,274 INFO L137 encePairwiseOnDemand]: 575/634 looper letters, 39 selfloop transitions, 4 changer transitions 0/585 dead transitions. [2022-11-18 20:38:35,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 585 transitions, 1368 flow [2022-11-18 20:38:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:38:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2809 transitions. [2022-11-18 20:38:35,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8861198738170347 [2022-11-18 20:38:35,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2809 transitions. [2022-11-18 20:38:35,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2809 transitions. [2022-11-18 20:38:35,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:35,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2809 transitions. [2022-11-18 20:38:35,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 561.8) internal successors, (2809), 5 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:35,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:35,298 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:35,299 INFO L175 Difference]: Start difference. First operand has 571 places, 634 transitions, 1380 flow. Second operand 5 states and 2809 transitions. [2022-11-18 20:38:35,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 585 transitions, 1368 flow [2022-11-18 20:38:35,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 585 transitions, 1368 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:38:35,311 INFO L231 Difference]: Finished difference. Result has 574 places, 581 transitions, 1300 flow [2022-11-18 20:38:35,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1300, PETRI_PLACES=574, PETRI_TRANSITIONS=581} [2022-11-18 20:38:35,313 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 3 predicate places. [2022-11-18 20:38:35,313 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 581 transitions, 1300 flow [2022-11-18 20:38:35,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 543.75) internal successors, (2175), 4 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:35,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:35,314 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:35,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:38:35,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-18 20:38:35,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:35,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1591657414, now seen corresponding path program 1 times [2022-11-18 20:38:35,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:35,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750738726] [2022-11-18 20:38:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:35,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:38:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:35,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750738726] [2022-11-18 20:38:35,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750738726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:35,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:35,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459761664] [2022-11-18 20:38:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:35,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:35,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:35,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:35,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:35,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-18 20:38:35,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 581 transitions, 1300 flow. Second operand has 4 states, 4 states have (on average 545.75) internal successors, (2183), 4 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:35,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:35,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-18 20:38:35,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:40,967 INFO L130 PetriNetUnfolder]: 1860/11818 cut-off events. [2022-11-18 20:38:40,967 INFO L131 PetriNetUnfolder]: For 6358/7529 co-relation queries the response was YES. [2022-11-18 20:38:41,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16100 conditions, 11818 events. 1860/11818 cut-off events. For 6358/7529 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 121237 event pairs, 324 based on Foata normal form. 27/10086 useless extension candidates. Maximal degree in co-relation 16009. Up to 2074 conditions per place. [2022-11-18 20:38:41,494 INFO L137 encePairwiseOnDemand]: 628/634 looper letters, 31 selfloop transitions, 8 changer transitions 0/581 dead transitions. [2022-11-18 20:38:41,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 581 transitions, 1376 flow [2022-11-18 20:38:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:38:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:38:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2747 transitions. [2022-11-18 20:38:41,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665615141955836 [2022-11-18 20:38:41,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2747 transitions. [2022-11-18 20:38:41,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2747 transitions. [2022-11-18 20:38:41,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:41,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2747 transitions. [2022-11-18 20:38:41,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 549.4) internal successors, (2747), 5 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:41,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:41,516 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:41,516 INFO L175 Difference]: Start difference. First operand has 574 places, 581 transitions, 1300 flow. Second operand 5 states and 2747 transitions. [2022-11-18 20:38:41,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 581 transitions, 1376 flow [2022-11-18 20:38:41,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 581 transitions, 1374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:38:41,527 INFO L231 Difference]: Finished difference. Result has 577 places, 581 transitions, 1318 flow [2022-11-18 20:38:41,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1318, PETRI_PLACES=577, PETRI_TRANSITIONS=581} [2022-11-18 20:38:41,528 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 6 predicate places. [2022-11-18 20:38:41,529 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 581 transitions, 1318 flow [2022-11-18 20:38:41,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 545.75) internal successors, (2183), 4 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:41,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:41,530 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:41,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:38:41,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-18 20:38:41,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:41,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2096737583, now seen corresponding path program 1 times [2022-11-18 20:38:41,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:41,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155237511] [2022-11-18 20:38:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:41,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:41,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155237511] [2022-11-18 20:38:41,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155237511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840873281] [2022-11-18 20:38:41,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:41,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:41,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:41,636 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:41,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:38:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:41,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:38:41,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:41,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:38:41,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840873281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:41,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:38:41,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:38:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615022253] [2022-11-18 20:38:41,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:41,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:38:41,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:41,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:38:41,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:41,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-18 20:38:41,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 581 transitions, 1318 flow. Second operand has 6 states, 6 states have (on average 544.6666666666666) internal successors, (3268), 6 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:41,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:41,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-18 20:38:41,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:47,221 INFO L130 PetriNetUnfolder]: 1860/11815 cut-off events. [2022-11-18 20:38:47,221 INFO L131 PetriNetUnfolder]: For 6374/7521 co-relation queries the response was YES. [2022-11-18 20:38:47,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16113 conditions, 11815 events. 1860/11815 cut-off events. For 6374/7521 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 120843 event pairs, 324 based on Foata normal form. 17/10073 useless extension candidates. Maximal degree in co-relation 8586. Up to 2083 conditions per place. [2022-11-18 20:38:47,752 INFO L137 encePairwiseOnDemand]: 629/634 looper letters, 35 selfloop transitions, 6 changer transitions 0/583 dead transitions. [2022-11-18 20:38:47,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 583 transitions, 1402 flow [2022-11-18 20:38:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:38:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:38:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3836 transitions. [2022-11-18 20:38:47,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8643533123028391 [2022-11-18 20:38:47,760 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3836 transitions. [2022-11-18 20:38:47,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3836 transitions. [2022-11-18 20:38:47,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:47,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3836 transitions. [2022-11-18 20:38:47,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 548.0) internal successors, (3836), 7 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:47,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 634.0) internal successors, (5072), 8 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:47,781 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 634.0) internal successors, (5072), 8 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:47,781 INFO L175 Difference]: Start difference. First operand has 577 places, 581 transitions, 1318 flow. Second operand 7 states and 3836 transitions. [2022-11-18 20:38:47,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 583 transitions, 1402 flow [2022-11-18 20:38:47,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 583 transitions, 1390 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:38:47,793 INFO L231 Difference]: Finished difference. Result has 579 places, 580 transitions, 1314 flow [2022-11-18 20:38:47,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1314, PETRI_PLACES=579, PETRI_TRANSITIONS=580} [2022-11-18 20:38:47,795 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 8 predicate places. [2022-11-18 20:38:47,795 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 580 transitions, 1314 flow [2022-11-18 20:38:47,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 544.6666666666666) internal successors, (3268), 6 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:47,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:47,796 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] [2022-11-18 20:38:47,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:48,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:38:48,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-18 20:38:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2134668362, now seen corresponding path program 1 times [2022-11-18 20:38:48,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:48,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498587313] [2022-11-18 20:38:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:48,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:48,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498587313] [2022-11-18 20:38:48,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498587313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:48,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954180086] [2022-11-18 20:38:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:48,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:48,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:48,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:48,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:38:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:38:48,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:48,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:48,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954180086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:48,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:48,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:38:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78692437] [2022-11-18 20:38:48,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:48,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:38:48,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:48,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:38:48,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:38:48,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-18 20:38:48,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 580 transitions, 1314 flow. Second operand has 10 states, 10 states have (on average 545.0) internal successors, (5450), 10 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:48,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:48,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-18 20:38:48,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:53,872 INFO L130 PetriNetUnfolder]: 1826/10995 cut-off events. [2022-11-18 20:38:53,872 INFO L131 PetriNetUnfolder]: For 6300/6960 co-relation queries the response was YES. [2022-11-18 20:38:54,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15243 conditions, 10995 events. 1826/10995 cut-off events. For 6300/6960 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 111149 event pairs, 410 based on Foata normal form. 10/9360 useless extension candidates. Maximal degree in co-relation 8047. Up to 2064 conditions per place. [2022-11-18 20:38:54,442 INFO L137 encePairwiseOnDemand]: 628/634 looper letters, 40 selfloop transitions, 9 changer transitions 0/591 dead transitions. [2022-11-18 20:38:54,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 591 transitions, 1450 flow [2022-11-18 20:38:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:38:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:38:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4929 transitions. [2022-11-18 20:38:54,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638275499474237 [2022-11-18 20:38:54,473 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4929 transitions. [2022-11-18 20:38:54,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4929 transitions. [2022-11-18 20:38:54,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:54,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4929 transitions. [2022-11-18 20:38:54,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 547.6666666666666) internal successors, (4929), 9 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:54,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 634.0) internal successors, (6340), 10 states have internal predecessors, (6340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:54,505 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 634.0) internal successors, (6340), 10 states have internal predecessors, (6340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:54,506 INFO L175 Difference]: Start difference. First operand has 579 places, 580 transitions, 1314 flow. Second operand 9 states and 4929 transitions. [2022-11-18 20:38:54,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 591 transitions, 1450 flow [2022-11-18 20:38:54,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 591 transitions, 1437 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-18 20:38:54,518 INFO L231 Difference]: Finished difference. Result has 586 places, 584 transitions, 1361 flow [2022-11-18 20:38:54,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1361, PETRI_PLACES=586, PETRI_TRANSITIONS=584} [2022-11-18 20:38:54,520 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 15 predicate places. [2022-11-18 20:38:54,520 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 584 transitions, 1361 flow [2022-11-18 20:38:54,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 545.0) internal successors, (5450), 10 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:54,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:54,522 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:54,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:54,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8967a55d-2202-4162-8f3f-28913cdc69ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:38:54,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-18 20:38:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash -245403611, now seen corresponding path program 1 times [2022-11-18 20:38:54,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:54,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734118323] [2022-11-18 20:38:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:54,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:38:54,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:54,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734118323] [2022-11-18 20:38:54,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734118323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:54,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:54,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:38:54,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154751517] [2022-11-18 20:38:54,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:54,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:54,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:54,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:54,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:54,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-18 20:38:54,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 584 transitions, 1361 flow. Second operand has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:54,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:54,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-18 20:38:54,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:00,296 INFO L130 PetriNetUnfolder]: 1824/10987 cut-off events. [2022-11-18 20:39:00,296 INFO L131 PetriNetUnfolder]: For 6417/8359 co-relation queries the response was YES. [2022-11-18 20:39:00,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15307 conditions, 10987 events. 1824/10987 cut-off events. For 6417/8359 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 111777 event pairs, 424 based on Foata normal form. 18/9369 useless extension candidates. Maximal degree in co-relation 8068. Up to 2128 conditions per place. [2022-11-18 20:39:00,765 INFO L137 encePairwiseOnDemand]: 627/634 looper letters, 39 selfloop transitions, 4 changer transitions 0/591 dead transitions. [2022-11-18 20:39:00,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 591 transitions, 1461 flow [2022-11-18 20:39:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:39:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:39:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2756 transitions. [2022-11-18 20:39:00,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8694006309148264 [2022-11-18 20:39:00,771 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2756 transitions. [2022-11-18 20:39:00,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2756 transitions. [2022-11-18 20:39:00,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:00,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2756 transitions. [2022-11-18 20:39:00,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 551.2) internal successors, (2756), 5 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:00,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:00,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:00,782 INFO L175 Difference]: Start difference. First operand has 586 places, 584 transitions, 1361 flow. Second operand 5 states and 2756 transitions. [2022-11-18 20:39:00,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 591 transitions, 1461 flow [2022-11-18 20:39:00,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 591 transitions, 1447 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-18 20:39:00,794 INFO L231 Difference]: Finished difference. Result has 589 places, 587 transitions, 1379 flow [2022-11-18 20:39:00,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1379, PETRI_PLACES=589, PETRI_TRANSITIONS=587} [2022-11-18 20:39:00,795 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 18 predicate places. [2022-11-18 20:39:00,796 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 587 transitions, 1379 flow [2022-11-18 20:39:00,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:00,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:00,797 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:00,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:39:00,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-18 20:39:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1917133105, now seen corresponding path program 1 times [2022-11-18 20:39:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:00,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529784617] [2022-11-18 20:39:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:00,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:39:00,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:39:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:39:00,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:39:00,859 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:39:00,859 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2022-11-18 20:39:00,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2022-11-18 20:39:00,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2022-11-18 20:39:00,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2022-11-18 20:39:00,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2022-11-18 20:39:00,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2022-11-18 20:39:00,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2022-11-18 20:39:00,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2022-11-18 20:39:00,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2022-11-18 20:39:00,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2022-11-18 20:39:00,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2022-11-18 20:39:00,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2022-11-18 20:39:00,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2022-11-18 20:39:00,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 30 remaining) [2022-11-18 20:39:00,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2022-11-18 20:39:00,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2022-11-18 20:39:00,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2022-11-18 20:39:00,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2022-11-18 20:39:00,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2022-11-18 20:39:00,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2022-11-18 20:39:00,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2022-11-18 20:39:00,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2022-11-18 20:39:00,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2022-11-18 20:39:00,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2022-11-18 20:39:00,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2022-11-18 20:39:00,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2022-11-18 20:39:00,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2022-11-18 20:39:00,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2022-11-18 20:39:00,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2022-11-18 20:39:00,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2022-11-18 20:39:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:39:00,864 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 20:39:00,865 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:39:00,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 20:39:00,972 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-18 20:39:00,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 686 places, 764 transitions, 1678 flow