./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a --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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- 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-b5237d8 [2022-11-21 16:36:46,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:36:46,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:36:47,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:36:47,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:36:47,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:36:47,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:36:47,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:36:47,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:36:47,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:36:47,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:36:47,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:36:47,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:36:47,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:36:47,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:36:47,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:36:47,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:36:47,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:36:47,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:36:47,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:36:47,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:36:47,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:36:47,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:36:47,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:36:47,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:36:47,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:36:47,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:36:47,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:36:47,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:36:47,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:36:47,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:36:47,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:36:47,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:36:47,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:36:47,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:36:47,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:36:47,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:36:47,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:36:47,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:36:47,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:36:47,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:36:47,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:36:47,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:36:47,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:36:47,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:36:47,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:36:47,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:36:47,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:36:47,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:36:47,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:36:47,120 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:36:47,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:36:47,121 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:36:47,121 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:36:47,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:36:47,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:36:47,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:36:47,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:36:47,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:36:47,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:36:47,123 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:36:47,124 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:36:47,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:36:47,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:36:47,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:36:47,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:36:47,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:36:47,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:36:47,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:36:47,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:36:47,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:36:47,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:36:47,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:36:47,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:36:47,128 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:36:47,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:36:47,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:36:47,129 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_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-11-21 16:36:47,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:36:47,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:36:47,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:36:47,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:36:47,475 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:36:47,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-21 16:36:50,674 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:36:50,890 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:36:50,891 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-21 16:36:50,899 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/data/d26d44555/b1ed3ad5c1644bb5be9888b419c9a271/FLAG7c857d7f5 [2022-11-21 16:36:50,919 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/data/d26d44555/b1ed3ad5c1644bb5be9888b419c9a271 [2022-11-21 16:36:50,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:36:50,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:36:50,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:36:50,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:36:50,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:36:50,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:36:50" (1/1) ... [2022-11-21 16:36:50,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76108bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:50, skipping insertion in model container [2022-11-21 16:36:50,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:36:50" (1/1) ... [2022-11-21 16:36:50,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:36:50,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:36:51,166 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-21 16:36:51,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:36:51,189 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:36:51,225 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-21 16:36:51,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:36:51,242 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:36:51,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51 WrapperNode [2022-11-21 16:36:51,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:36:51,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:36:51,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:36:51,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:36:51,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,300 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 267 [2022-11-21 16:36:51,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:36:51,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:36:51,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:36:51,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:36:51,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,334 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:36:51,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:36:51,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:36:51,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:36:51,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (1/1) ... [2022-11-21 16:36:51,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:36:51,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:36:51,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:36:51,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d9ddf38-dfd1-4195-9277-641d33f269f1/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:36:51,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:36:51,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:36:51,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:36:51,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:36:51,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:36:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:36:51,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:36:51,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:36:51,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:36:51,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:36:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:36:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:36:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:36:51,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:36:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:36:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:36:51,456 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:36:51,589 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:36:51,591 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:36:52,124 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:36:52,347 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:36:52,347 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:36:52,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:36:52 BoogieIcfgContainer [2022-11-21 16:36:52,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:36:52,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:36:52,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:36:52,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:36:52,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:36:50" (1/3) ... [2022-11-21 16:36:52,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3662a3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:36:52, skipping insertion in model container [2022-11-21 16:36:52,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:36:51" (2/3) ... [2022-11-21 16:36:52,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3662a3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:36:52, skipping insertion in model container [2022-11-21 16:36:52,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:36:52" (3/3) ... [2022-11-21 16:36:52,360 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-11-21 16:36:52,370 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:36:52,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:36:52,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 16:36:52,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:36:52,457 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:36:52,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 163 transitions, 350 flow [2022-11-21 16:36:52,563 INFO L130 PetriNetUnfolder]: 2/160 cut-off events. [2022-11-21 16:36:52,563 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:36:52,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 160 events. 2/160 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-11-21 16:36:52,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 163 transitions, 350 flow [2022-11-21 16:36:52,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 139 transitions, 293 flow [2022-11-21 16:36:52,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:36:52,607 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;@3fc93e93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:36:52,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-21 16:36:52,649 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-11-21 16:36:52,650 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:36:52,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:36:52,651 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] [2022-11-21 16:36:52,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:36:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash -933514393, now seen corresponding path program 1 times [2022-11-21 16:36:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:36:52,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214382781] [2022-11-21 16:36:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:52,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:36:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:53,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:36:53,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214382781] [2022-11-21 16:36:53,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214382781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:53,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:53,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:36:53,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200575556] [2022-11-21 16:36:53,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:53,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:36:53,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:36:53,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:36:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:36:53,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-21 16:36:53,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:53,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:36:53,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-21 16:36:53,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:36:56,189 INFO L130 PetriNetUnfolder]: 5127/9650 cut-off events. [2022-11-21 16:36:56,190 INFO L131 PetriNetUnfolder]: For 780/780 co-relation queries the response was YES. [2022-11-21 16:36:56,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18230 conditions, 9650 events. 5127/9650 cut-off events. For 780/780 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 75892 event pairs, 2566 based on Foata normal form. 1/7797 useless extension candidates. Maximal degree in co-relation 16646. Up to 5207 conditions per place. [2022-11-21 16:36:56,313 INFO L137 encePairwiseOnDemand]: 143/163 looper letters, 94 selfloop transitions, 19 changer transitions 2/201 dead transitions. [2022-11-21 16:36:56,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 201 transitions, 668 flow [2022-11-21 16:36:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:36:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:36:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 839 transitions. [2022-11-21 16:36:56,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7353198948290973 [2022-11-21 16:36:56,341 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 839 transitions. [2022-11-21 16:36:56,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 839 transitions. [2022-11-21 16:36:56,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:36:56,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 839 transitions. [2022-11-21 16:36:56,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.85714285714286) internal successors, (839), 7 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:56,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:56,371 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:56,373 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 293 flow. Second operand 7 states and 839 transitions. [2022-11-21 16:36:56,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 201 transitions, 668 flow [2022-11-21 16:36:56,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 201 transitions, 648 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:36:56,412 INFO L231 Difference]: Finished difference. Result has 153 places, 149 transitions, 412 flow [2022-11-21 16:36:56,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=153, PETRI_TRANSITIONS=149} [2022-11-21 16:36:56,423 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 5 predicate places. [2022-11-21 16:36:56,424 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 149 transitions, 412 flow [2022-11-21 16:36:56,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:56,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:36:56,426 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:56,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:36:56,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:36:56,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:56,427 INFO L85 PathProgramCache]: Analyzing trace with hash -538230451, now seen corresponding path program 1 times [2022-11-21 16:36:56,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:36:56,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626024274] [2022-11-21 16:36:56,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:56,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:36:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:56,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:36:56,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626024274] [2022-11-21 16:36:56,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626024274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:56,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:56,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:36:56,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658892023] [2022-11-21 16:36:56,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:56,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:36:56,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:36:56,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:36:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:36:56,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 163 [2022-11-21 16:36:56,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 149 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:56,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:36:56,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 163 [2022-11-21 16:36:56,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:36:58,215 INFO L130 PetriNetUnfolder]: 4177/7873 cut-off events. [2022-11-21 16:36:58,215 INFO L131 PetriNetUnfolder]: For 3249/3249 co-relation queries the response was YES. [2022-11-21 16:36:58,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18398 conditions, 7873 events. 4177/7873 cut-off events. For 3249/3249 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 59935 event pairs, 2337 based on Foata normal form. 174/7157 useless extension candidates. Maximal degree in co-relation 6179. Up to 5983 conditions per place. [2022-11-21 16:36:58,311 INFO L137 encePairwiseOnDemand]: 154/163 looper letters, 80 selfloop transitions, 7 changer transitions 0/176 dead transitions. [2022-11-21 16:36:58,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 176 transitions, 689 flow [2022-11-21 16:36:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:36:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:36:58,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2022-11-21 16:36:58,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.754601226993865 [2022-11-21 16:36:58,316 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2022-11-21 16:36:58,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2022-11-21 16:36:58,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:36:58,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2022-11-21 16:36:58,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:58,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:58,325 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:58,325 INFO L175 Difference]: Start difference. First operand has 153 places, 149 transitions, 412 flow. Second operand 6 states and 738 transitions. [2022-11-21 16:36:58,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 176 transitions, 689 flow [2022-11-21 16:36:58,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 176 transitions, 685 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:36:58,339 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 427 flow [2022-11-21 16:36:58,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2022-11-21 16:36:58,341 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 6 predicate places. [2022-11-21 16:36:58,341 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 427 flow [2022-11-21 16:36:58,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:58,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:36:58,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:58,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:36:58,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:36:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash -350813456, now seen corresponding path program 1 times [2022-11-21 16:36:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:36:58,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189317536] [2022-11-21 16:36:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:36:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:58,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:36:58,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189317536] [2022-11-21 16:36:58,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189317536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:36:58,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:36:58,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:36:58,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095653370] [2022-11-21 16:36:58,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:36:58,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:36:58,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:36:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:36:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:36:58,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 163 [2022-11-21 16:36:58,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 427 flow. Second operand has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:36:58,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:36:58,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 163 [2022-11-21 16:36:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:00,156 INFO L130 PetriNetUnfolder]: 3241/7272 cut-off events. [2022-11-21 16:37:00,156 INFO L131 PetriNetUnfolder]: For 3818/4292 co-relation queries the response was YES. [2022-11-21 16:37:00,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16081 conditions, 7272 events. 3241/7272 cut-off events. For 3818/4292 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 63133 event pairs, 1350 based on Foata normal form. 210/6504 useless extension candidates. Maximal degree in co-relation 15459. Up to 2759 conditions per place. [2022-11-21 16:37:00,221 INFO L137 encePairwiseOnDemand]: 150/163 looper letters, 115 selfloop transitions, 14 changer transitions 0/228 dead transitions. [2022-11-21 16:37:00,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 228 transitions, 929 flow [2022-11-21 16:37:00,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:37:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:37:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 880 transitions. [2022-11-21 16:37:00,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7712532865907099 [2022-11-21 16:37:00,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 880 transitions. [2022-11-21 16:37:00,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 880 transitions. [2022-11-21 16:37:00,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:00,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 880 transitions. [2022-11-21 16:37:00,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.71428571428571) internal successors, (880), 7 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:00,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:00,234 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:00,234 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 427 flow. Second operand 7 states and 880 transitions. [2022-11-21 16:37:00,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 228 transitions, 929 flow [2022-11-21 16:37:00,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 228 transitions, 918 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:37:00,250 INFO L231 Difference]: Finished difference. Result has 160 places, 156 transitions, 502 flow [2022-11-21 16:37:00,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=160, PETRI_TRANSITIONS=156} [2022-11-21 16:37:00,252 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 12 predicate places. [2022-11-21 16:37:00,252 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 502 flow [2022-11-21 16:37:00,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:00,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:00,253 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:00,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:37:00,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash -350813455, now seen corresponding path program 1 times [2022-11-21 16:37:00,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:00,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857081004] [2022-11-21 16:37:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:00,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:00,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:00,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857081004] [2022-11-21 16:37:00,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857081004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:00,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:00,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:37:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101069091] [2022-11-21 16:37:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:37:00,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:37:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:37:00,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 163 [2022-11-21 16:37:00,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 156 transitions, 502 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:00,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:00,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 163 [2022-11-21 16:37:00,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:01,602 INFO L130 PetriNetUnfolder]: 3002/6643 cut-off events. [2022-11-21 16:37:01,603 INFO L131 PetriNetUnfolder]: For 4592/5056 co-relation queries the response was YES. [2022-11-21 16:37:01,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16127 conditions, 6643 events. 3002/6643 cut-off events. For 4592/5056 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 55797 event pairs, 1699 based on Foata normal form. 355/6566 useless extension candidates. Maximal degree in co-relation 14829. Up to 3468 conditions per place. [2022-11-21 16:37:01,670 INFO L137 encePairwiseOnDemand]: 156/163 looper letters, 69 selfloop transitions, 7 changer transitions 0/175 dead transitions. [2022-11-21 16:37:01,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 175 transitions, 713 flow [2022-11-21 16:37:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:37:01,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:37:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 632 transitions. [2022-11-21 16:37:01,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7754601226993865 [2022-11-21 16:37:01,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 632 transitions. [2022-11-21 16:37:01,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 632 transitions. [2022-11-21 16:37:01,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:01,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 632 transitions. [2022-11-21 16:37:01,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:01,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:01,688 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:01,689 INFO L175 Difference]: Start difference. First operand has 160 places, 156 transitions, 502 flow. Second operand 5 states and 632 transitions. [2022-11-21 16:37:01,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 175 transitions, 713 flow [2022-11-21 16:37:01,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 175 transitions, 694 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:37:01,722 INFO L231 Difference]: Finished difference. Result has 158 places, 154 transitions, 487 flow [2022-11-21 16:37:01,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=487, PETRI_PLACES=158, PETRI_TRANSITIONS=154} [2022-11-21 16:37:01,725 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 10 predicate places. [2022-11-21 16:37:01,725 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 154 transitions, 487 flow [2022-11-21 16:37:01,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:01,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:01,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:01,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:37:01,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:01,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:01,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1712472656, now seen corresponding path program 1 times [2022-11-21 16:37:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:01,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991915561] [2022-11-21 16:37:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:02,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:02,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991915561] [2022-11-21 16:37:02,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991915561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:02,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:02,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:37:02,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440637995] [2022-11-21 16:37:02,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:02,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:37:02,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:37:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:37:02,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-21 16:37:02,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 154 transitions, 487 flow. Second operand has 10 states, 10 states have (on average 103.8) internal successors, (1038), 10 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:02,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:02,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-21 16:37:02,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:05,532 INFO L130 PetriNetUnfolder]: 7897/15008 cut-off events. [2022-11-21 16:37:05,532 INFO L131 PetriNetUnfolder]: For 10396/10685 co-relation queries the response was YES. [2022-11-21 16:37:05,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37364 conditions, 15008 events. 7897/15008 cut-off events. For 10396/10685 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 127187 event pairs, 880 based on Foata normal form. 249/14828 useless extension candidates. Maximal degree in co-relation 28634. Up to 5149 conditions per place. [2022-11-21 16:37:05,680 INFO L137 encePairwiseOnDemand]: 145/163 looper letters, 146 selfloop transitions, 30 changer transitions 0/263 dead transitions. [2022-11-21 16:37:05,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 263 transitions, 1257 flow [2022-11-21 16:37:05,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:37:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:37:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2022-11-21 16:37:05,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7266530334014997 [2022-11-21 16:37:05,685 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2022-11-21 16:37:05,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2022-11-21 16:37:05,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:05,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2022-11-21 16:37:05,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:05,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:05,693 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:05,694 INFO L175 Difference]: Start difference. First operand has 158 places, 154 transitions, 487 flow. Second operand 9 states and 1066 transitions. [2022-11-21 16:37:05,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 263 transitions, 1257 flow [2022-11-21 16:37:05,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 263 transitions, 1243 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:37:05,721 INFO L231 Difference]: Finished difference. Result has 167 places, 176 transitions, 717 flow [2022-11-21 16:37:05,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=717, PETRI_PLACES=167, PETRI_TRANSITIONS=176} [2022-11-21 16:37:05,722 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 19 predicate places. [2022-11-21 16:37:05,722 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 176 transitions, 717 flow [2022-11-21 16:37:05,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.8) internal successors, (1038), 10 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:05,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:05,724 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:05,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:37:05,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:05,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:05,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1752056683, now seen corresponding path program 1 times [2022-11-21 16:37:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:05,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379810831] [2022-11-21 16:37:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:05,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:05,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379810831] [2022-11-21 16:37:05,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379810831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:05,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:05,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:37:05,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282821212] [2022-11-21 16:37:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:05,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:37:05,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:37:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:37:05,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 163 [2022-11-21 16:37:05,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 176 transitions, 717 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:05,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:05,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 163 [2022-11-21 16:37:05,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:08,729 INFO L130 PetriNetUnfolder]: 6581/13195 cut-off events. [2022-11-21 16:37:08,729 INFO L131 PetriNetUnfolder]: For 19155/19418 co-relation queries the response was YES. [2022-11-21 16:37:08,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37247 conditions, 13195 events. 6581/13195 cut-off events. For 19155/19418 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 116072 event pairs, 3419 based on Foata normal form. 668/13787 useless extension candidates. Maximal degree in co-relation 35154. Up to 9940 conditions per place. [2022-11-21 16:37:08,852 INFO L137 encePairwiseOnDemand]: 155/163 looper letters, 108 selfloop transitions, 8 changer transitions 0/207 dead transitions. [2022-11-21 16:37:08,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 207 transitions, 1136 flow [2022-11-21 16:37:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:37:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:37:08,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 731 transitions. [2022-11-21 16:37:08,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7474437627811861 [2022-11-21 16:37:08,856 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 731 transitions. [2022-11-21 16:37:08,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 731 transitions. [2022-11-21 16:37:08,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:08,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 731 transitions. [2022-11-21 16:37:08,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.83333333333333) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:08,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:08,863 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:08,863 INFO L175 Difference]: Start difference. First operand has 167 places, 176 transitions, 717 flow. Second operand 6 states and 731 transitions. [2022-11-21 16:37:08,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 207 transitions, 1136 flow [2022-11-21 16:37:08,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 207 transitions, 1110 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-21 16:37:08,927 INFO L231 Difference]: Finished difference. Result has 169 places, 177 transitions, 721 flow [2022-11-21 16:37:08,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=721, PETRI_PLACES=169, PETRI_TRANSITIONS=177} [2022-11-21 16:37:08,931 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 21 predicate places. [2022-11-21 16:37:08,931 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 177 transitions, 721 flow [2022-11-21 16:37:08,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:08,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:08,933 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:08,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:37:08,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:08,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:08,934 INFO L85 PathProgramCache]: Analyzing trace with hash -8926498, now seen corresponding path program 1 times [2022-11-21 16:37:08,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:08,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121787532] [2022-11-21 16:37:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:08,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:09,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:09,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:09,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121787532] [2022-11-21 16:37:09,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121787532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:09,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:09,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:37:09,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338786789] [2022-11-21 16:37:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:09,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:37:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:37:09,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:37:09,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-21 16:37:09,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 177 transitions, 721 flow. Second operand has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:09,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:09,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-21 16:37:09,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:13,014 INFO L130 PetriNetUnfolder]: 10947/21160 cut-off events. [2022-11-21 16:37:13,015 INFO L131 PetriNetUnfolder]: For 29951/30277 co-relation queries the response was YES. [2022-11-21 16:37:13,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60635 conditions, 21160 events. 10947/21160 cut-off events. For 29951/30277 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 194058 event pairs, 1791 based on Foata normal form. 495/21583 useless extension candidates. Maximal degree in co-relation 51895. Up to 7894 conditions per place. [2022-11-21 16:37:13,204 INFO L137 encePairwiseOnDemand]: 145/163 looper letters, 164 selfloop transitions, 45 changer transitions 0/296 dead transitions. [2022-11-21 16:37:13,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 296 transitions, 1769 flow [2022-11-21 16:37:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:37:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:37:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 948 transitions. [2022-11-21 16:37:13,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7269938650306749 [2022-11-21 16:37:13,209 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 948 transitions. [2022-11-21 16:37:13,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 948 transitions. [2022-11-21 16:37:13,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:13,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 948 transitions. [2022-11-21 16:37:13,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:13,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:13,219 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:13,219 INFO L175 Difference]: Start difference. First operand has 169 places, 177 transitions, 721 flow. Second operand 8 states and 948 transitions. [2022-11-21 16:37:13,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 296 transitions, 1769 flow [2022-11-21 16:37:13,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 296 transitions, 1754 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:37:13,309 INFO L231 Difference]: Finished difference. Result has 176 places, 205 transitions, 1120 flow [2022-11-21 16:37:13,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1120, PETRI_PLACES=176, PETRI_TRANSITIONS=205} [2022-11-21 16:37:13,312 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 28 predicate places. [2022-11-21 16:37:13,312 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 205 transitions, 1120 flow [2022-11-21 16:37:13,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:13,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:13,313 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:13,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:37:13,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash -826705219, now seen corresponding path program 1 times [2022-11-21 16:37:13,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940194334] [2022-11-21 16:37:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:13,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:13,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:13,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940194334] [2022-11-21 16:37:13,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940194334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:13,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:13,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:37:13,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501479508] [2022-11-21 16:37:13,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:13,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:37:13,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:37:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:37:13,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 163 [2022-11-21 16:37:13,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 205 transitions, 1120 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:13,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:13,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 163 [2022-11-21 16:37:13,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:17,357 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][186], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1), 272#true]) [2022-11-21 16:37:17,357 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,358 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,358 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,358 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,358 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][187], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1), 272#true]) [2022-11-21 16:37:17,358 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,359 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,359 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,359 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,361 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][217], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-21 16:37:17,361 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,361 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,361 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,361 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,362 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][218], [120#L192-2true, Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-21 16:37:17,362 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,362 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,362 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,362 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,364 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][217], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-21 16:37:17,364 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,364 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,364 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,365 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,365 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][218], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 205#(<= ~i1~0 0), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-21 16:37:17,365 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,365 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,365 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,366 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:17,453 INFO L130 PetriNetUnfolder]: 10052/21651 cut-off events. [2022-11-21 16:37:17,454 INFO L131 PetriNetUnfolder]: For 59933/64679 co-relation queries the response was YES. [2022-11-21 16:37:17,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63447 conditions, 21651 events. 10052/21651 cut-off events. For 59933/64679 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 218377 event pairs, 3814 based on Foata normal form. 993/22042 useless extension candidates. Maximal degree in co-relation 61005. Up to 6392 conditions per place. [2022-11-21 16:37:17,674 INFO L137 encePairwiseOnDemand]: 150/163 looper letters, 157 selfloop transitions, 17 changer transitions 0/305 dead transitions. [2022-11-21 16:37:17,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 305 transitions, 2101 flow [2022-11-21 16:37:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:37:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:37:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 873 transitions. [2022-11-21 16:37:17,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651183172655566 [2022-11-21 16:37:17,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 873 transitions. [2022-11-21 16:37:17,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 873 transitions. [2022-11-21 16:37:17,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:17,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 873 transitions. [2022-11-21 16:37:17,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:17,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:17,694 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:17,694 INFO L175 Difference]: Start difference. First operand has 176 places, 205 transitions, 1120 flow. Second operand 7 states and 873 transitions. [2022-11-21 16:37:17,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 305 transitions, 2101 flow [2022-11-21 16:37:17,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 305 transitions, 2091 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-21 16:37:17,819 INFO L231 Difference]: Finished difference. Result has 183 places, 210 transitions, 1200 flow [2022-11-21 16:37:17,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1200, PETRI_PLACES=183, PETRI_TRANSITIONS=210} [2022-11-21 16:37:17,823 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 35 predicate places. [2022-11-21 16:37:17,823 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 210 transitions, 1200 flow [2022-11-21 16:37:17,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:17,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:17,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:17,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:37:17,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash -826705218, now seen corresponding path program 1 times [2022-11-21 16:37:17,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:17,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736087427] [2022-11-21 16:37:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:17,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:17,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:17,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736087427] [2022-11-21 16:37:17,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736087427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:17,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:17,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:37:17,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726932401] [2022-11-21 16:37:17,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:17,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:37:17,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:17,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:37:17,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:37:17,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 163 [2022-11-21 16:37:17,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 210 transitions, 1200 flow. Second operand has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:17,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:17,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 163 [2022-11-21 16:37:17,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:21,413 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][182], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 277#(<= ~i2~0 0), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-21 16:37:21,413 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,413 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,413 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,414 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,414 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 180#(<= ~n1~0 0), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 277#(<= ~i2~0 0), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-21 16:37:21,414 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,414 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,414 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,414 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,415 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][182], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-21 16:37:21,415 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,416 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,416 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,416 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,416 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-21 16:37:21,416 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,416 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,416 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,417 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,418 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][182], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), 277#(<= ~i2~0 0), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 264#(<= ~n1~0 1), Black: 276#(<= ~i~0 0), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0)), 120#L192-2true, thread3Thread1of1ForFork2InUse, Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0))]) [2022-11-21 16:37:21,418 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,418 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,419 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,419 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,419 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), 277#(<= ~i2~0 0), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), 264#(<= ~n1~0 1), Black: 276#(<= ~i~0 0), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0)), 120#L192-2true, thread3Thread1of1ForFork2InUse, Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0))]) [2022-11-21 16:37:21,419 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,419 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,420 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,420 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-21 16:37:21,485 INFO L130 PetriNetUnfolder]: 8863/19351 cut-off events. [2022-11-21 16:37:21,485 INFO L131 PetriNetUnfolder]: For 57480/61652 co-relation queries the response was YES. [2022-11-21 16:37:21,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60452 conditions, 19351 events. 8863/19351 cut-off events. For 57480/61652 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 193477 event pairs, 4608 based on Foata normal form. 1616/20600 useless extension candidates. Maximal degree in co-relation 58132. Up to 9385 conditions per place. [2022-11-21 16:37:21,696 INFO L137 encePairwiseOnDemand]: 156/163 looper letters, 101 selfloop transitions, 7 changer transitions 0/239 dead transitions. [2022-11-21 16:37:21,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 239 transitions, 1608 flow [2022-11-21 16:37:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:37:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:37:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2022-11-21 16:37:21,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7717791411042945 [2022-11-21 16:37:21,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2022-11-21 16:37:21,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2022-11-21 16:37:21,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:21,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2022-11-21 16:37:21,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:21,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:21,704 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:21,705 INFO L175 Difference]: Start difference. First operand has 183 places, 210 transitions, 1200 flow. Second operand 5 states and 629 transitions. [2022-11-21 16:37:21,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 239 transitions, 1608 flow [2022-11-21 16:37:21,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 239 transitions, 1585 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:37:21,984 INFO L231 Difference]: Finished difference. Result has 181 places, 208 transitions, 1181 flow [2022-11-21 16:37:21,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1181, PETRI_PLACES=181, PETRI_TRANSITIONS=208} [2022-11-21 16:37:21,985 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 33 predicate places. [2022-11-21 16:37:21,985 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 208 transitions, 1181 flow [2022-11-21 16:37:21,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:21,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:21,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:21,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:37:21,987 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1043349793, now seen corresponding path program 1 times [2022-11-21 16:37:21,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:21,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333487685] [2022-11-21 16:37:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:22,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:22,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333487685] [2022-11-21 16:37:22,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333487685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:22,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:22,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:37:22,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426461863] [2022-11-21 16:37:22,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:22,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:37:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:22,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:37:22,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:37:22,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-21 16:37:22,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 208 transitions, 1181 flow. Second operand has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:22,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:22,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-21 16:37:22,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:28,061 INFO L130 PetriNetUnfolder]: 15468/31555 cut-off events. [2022-11-21 16:37:28,061 INFO L131 PetriNetUnfolder]: For 85563/86109 co-relation queries the response was YES. [2022-11-21 16:37:28,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101395 conditions, 31555 events. 15468/31555 cut-off events. For 85563/86109 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 318315 event pairs, 2655 based on Foata normal form. 982/32379 useless extension candidates. Maximal degree in co-relation 97851. Up to 8889 conditions per place. [2022-11-21 16:37:28,361 INFO L137 encePairwiseOnDemand]: 147/163 looper letters, 212 selfloop transitions, 66 changer transitions 4/370 dead transitions. [2022-11-21 16:37:28,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 370 transitions, 2831 flow [2022-11-21 16:37:28,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:37:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:37:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 962 transitions. [2022-11-21 16:37:28,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7377300613496932 [2022-11-21 16:37:28,366 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 962 transitions. [2022-11-21 16:37:28,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 962 transitions. [2022-11-21 16:37:28,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:28,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 962 transitions. [2022-11-21 16:37:28,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:28,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:28,375 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:28,375 INFO L175 Difference]: Start difference. First operand has 181 places, 208 transitions, 1181 flow. Second operand 8 states and 962 transitions. [2022-11-21 16:37:28,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 370 transitions, 2831 flow [2022-11-21 16:37:28,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 370 transitions, 2817 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:37:28,907 INFO L231 Difference]: Finished difference. Result has 188 places, 249 transitions, 1865 flow [2022-11-21 16:37:28,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1865, PETRI_PLACES=188, PETRI_TRANSITIONS=249} [2022-11-21 16:37:28,908 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 40 predicate places. [2022-11-21 16:37:28,909 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 249 transitions, 1865 flow [2022-11-21 16:37:28,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:28,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:28,909 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:28,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:37:28,910 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash 249033695, now seen corresponding path program 1 times [2022-11-21 16:37:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:28,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390118300] [2022-11-21 16:37:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:28,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:29,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390118300] [2022-11-21 16:37:29,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390118300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:29,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:29,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:37:29,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046650152] [2022-11-21 16:37:29,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:29,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:37:29,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:29,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:37:29,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:37:29,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-21 16:37:29,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 249 transitions, 1865 flow. Second operand has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:29,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:29,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-21 16:37:29,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:35,850 INFO L130 PetriNetUnfolder]: 18023/36915 cut-off events. [2022-11-21 16:37:35,850 INFO L131 PetriNetUnfolder]: For 132144/132745 co-relation queries the response was YES. [2022-11-21 16:37:36,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127038 conditions, 36915 events. 18023/36915 cut-off events. For 132144/132745 co-relation queries the response was YES. Maximal size of possible extension queue 1409. Compared 383007 event pairs, 7780 based on Foata normal form. 700/37359 useless extension candidates. Maximal degree in co-relation 113287. Up to 18785 conditions per place. [2022-11-21 16:37:36,260 INFO L137 encePairwiseOnDemand]: 149/163 looper letters, 237 selfloop transitions, 43 changer transitions 0/368 dead transitions. [2022-11-21 16:37:36,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 368 transitions, 3338 flow [2022-11-21 16:37:36,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:37:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:37:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 941 transitions. [2022-11-21 16:37:36,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7216257668711656 [2022-11-21 16:37:36,264 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 941 transitions. [2022-11-21 16:37:36,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 941 transitions. [2022-11-21 16:37:36,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:36,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 941 transitions. [2022-11-21 16:37:36,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:36,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:36,272 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:36,272 INFO L175 Difference]: Start difference. First operand has 188 places, 249 transitions, 1865 flow. Second operand 8 states and 941 transitions. [2022-11-21 16:37:36,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 368 transitions, 3338 flow [2022-11-21 16:37:36,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 368 transitions, 3322 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-21 16:37:37,001 INFO L231 Difference]: Finished difference. Result has 195 places, 262 transitions, 2143 flow [2022-11-21 16:37:37,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2143, PETRI_PLACES=195, PETRI_TRANSITIONS=262} [2022-11-21 16:37:37,003 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 47 predicate places. [2022-11-21 16:37:37,003 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 262 transitions, 2143 flow [2022-11-21 16:37:37,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:37,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:37,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:37,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:37:37,005 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:37,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1372711775, now seen corresponding path program 2 times [2022-11-21 16:37:37,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:37,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335968657] [2022-11-21 16:37:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:37,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:37,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:37,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335968657] [2022-11-21 16:37:37,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335968657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:37,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:37,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:37:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589779597] [2022-11-21 16:37:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:37,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:37:37,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:37:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:37:37,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-21 16:37:37,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 262 transitions, 2143 flow. Second operand has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:37,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:37,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-21 16:37:37,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:37:45,455 INFO L130 PetriNetUnfolder]: 19934/40629 cut-off events. [2022-11-21 16:37:45,455 INFO L131 PetriNetUnfolder]: For 165982/166568 co-relation queries the response was YES. [2022-11-21 16:37:45,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145274 conditions, 40629 events. 19934/40629 cut-off events. For 165982/166568 co-relation queries the response was YES. Maximal size of possible extension queue 1600. Compared 428461 event pairs, 7903 based on Foata normal form. 638/40997 useless extension candidates. Maximal degree in co-relation 141317. Up to 17954 conditions per place. [2022-11-21 16:37:45,938 INFO L137 encePairwiseOnDemand]: 148/163 looper letters, 256 selfloop transitions, 69 changer transitions 0/413 dead transitions. [2022-11-21 16:37:45,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 413 transitions, 4189 flow [2022-11-21 16:37:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:37:45,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:37:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2022-11-21 16:37:45,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7123381049761418 [2022-11-21 16:37:45,943 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2022-11-21 16:37:45,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2022-11-21 16:37:45,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:37:45,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2022-11-21 16:37:45,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.11111111111111) internal successors, (1045), 9 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:45,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:45,953 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:45,953 INFO L175 Difference]: Start difference. First operand has 195 places, 262 transitions, 2143 flow. Second operand 9 states and 1045 transitions. [2022-11-21 16:37:45,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 413 transitions, 4189 flow [2022-11-21 16:37:47,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 413 transitions, 4167 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-21 16:37:47,062 INFO L231 Difference]: Finished difference. Result has 206 places, 312 transitions, 3054 flow [2022-11-21 16:37:47,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3054, PETRI_PLACES=206, PETRI_TRANSITIONS=312} [2022-11-21 16:37:47,063 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 58 predicate places. [2022-11-21 16:37:47,063 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 312 transitions, 3054 flow [2022-11-21 16:37:47,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:47,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:37:47,064 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:47,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:37:47,065 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-21 16:37:47,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:47,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1373265887, now seen corresponding path program 1 times [2022-11-21 16:37:47,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:37:47,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883037106] [2022-11-21 16:37:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:47,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:37:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:47,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:37:47,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883037106] [2022-11-21 16:37:47,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883037106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:37:47,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:37:47,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:37:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869346236] [2022-11-21 16:37:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:37:47,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:37:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:37:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:37:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:37:47,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-21 16:37:47,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 312 transitions, 3054 flow. Second operand has 8 states, 8 states have (on average 104.375) internal successors, (835), 8 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:37:47,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:37:47,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-21 16:37:47,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand