./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:30:32,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:30:32,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:30:33,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:30:33,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:30:33,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:30:33,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:30:33,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:30:33,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:30:33,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:30:33,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:30:33,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:30:33,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:30:33,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:30:33,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:30:33,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:30:33,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:30:33,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:30:33,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:30:33,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:30:33,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:30:33,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:30:33,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:30:33,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:30:33,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:30:33,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:30:33,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:30:33,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:30:33,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:30:33,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:30:33,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:30:33,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:30:33,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:30:33,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:30:33,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:30:33,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:30:33,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:30:33,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:30:33,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:30:33,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:30:33,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:30:33,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:30:33,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:30:33,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:30:33,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:30:33,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:30:33,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:30:33,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:30:33,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:30:33,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:30:33,166 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:30:33,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:30:33,168 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:30:33,168 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:30:33,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:30:33,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:30:33,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:30:33,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:30:33,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:30:33,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:30:33,170 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:30:33,170 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:30:33,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:30:33,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:30:33,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:30:33,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:30:33,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:30:33,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:30:33,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:30:33,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:30:33,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:30:33,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:30:33,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:30:33,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:30:33,174 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:30:33,174 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:30:33,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:30:33,175 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_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 [2022-11-18 20:30:33,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:30:33,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:30:33,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:30:33,574 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:30:33,575 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:30:33,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-11-18 20:30:33,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/data/ae19d57ad/e1190eee147b49c881c620d0428e2c3b/FLAG32e7d7fb4 [2022-11-18 20:30:34,247 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:30:34,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-11-18 20:30:34,261 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/data/ae19d57ad/e1190eee147b49c881c620d0428e2c3b/FLAG32e7d7fb4 [2022-11-18 20:30:34,586 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/data/ae19d57ad/e1190eee147b49c881c620d0428e2c3b [2022-11-18 20:30:34,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:30:34,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:30:34,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:30:34,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:30:34,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:30:34,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb35f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34, skipping insertion in model container [2022-11-18 20:30:34,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:30:34,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:30:34,843 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-11-18 20:30:34,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:30:34,853 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:30:34,875 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-11-18 20:30:34,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:30:34,891 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:30:34,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34 WrapperNode [2022-11-18 20:30:34,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:30:34,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:30:34,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:30:34,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:30:34,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,944 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-11-18 20:30:34,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:30:34,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:30:34,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:30:34,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:30:34,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:30:34,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:30:34,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:30:34,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:30:34,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (1/1) ... [2022-11-18 20:30:34,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:30:35,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:35,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:30:35,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:30:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:30:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:30:35,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:30:35,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:30:35,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:30:35,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:30:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:30:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:30:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:30:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:30:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:30:35,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:30:35,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:30:35,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:30:35,058 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:30:35,159 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:30:35,161 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:30:35,512 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:30:35,611 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:30:35,611 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:30:35,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:30:35 BoogieIcfgContainer [2022-11-18 20:30:35,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:30:35,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:30:35,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:30:35,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:30:35,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:30:34" (1/3) ... [2022-11-18 20:30:35,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13913640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:30:35, skipping insertion in model container [2022-11-18 20:30:35,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:34" (2/3) ... [2022-11-18 20:30:35,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13913640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:30:35, skipping insertion in model container [2022-11-18 20:30:35,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:30:35" (3/3) ... [2022-11-18 20:30:35,634 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-11-18 20:30:35,644 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:30:35,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:30:35,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:30:35,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:30:35,761 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:30:35,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 102 transitions, 220 flow [2022-11-18 20:30:35,862 INFO L130 PetriNetUnfolder]: 11/100 cut-off events. [2022-11-18 20:30:35,862 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:30:35,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 11/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 141 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2022-11-18 20:30:35,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 102 transitions, 220 flow [2022-11-18 20:30:35,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 81 transitions, 171 flow [2022-11-18 20:30:35,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:30:35,891 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;@184b234d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:30:35,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 20:30:35,902 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-18 20:30:35,903 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:30:35,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:35,904 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] [2022-11-18 20:30:35,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash -754746104, now seen corresponding path program 1 times [2022-11-18 20:30:35,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:35,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590635499] [2022-11-18 20:30:35,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:35,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:36,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:36,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590635499] [2022-11-18 20:30:36,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590635499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:36,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:36,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:30:36,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687308091] [2022-11-18 20:30:36,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:36,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:36,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:36,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-18 20:30:36,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:36,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:36,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-18 20:30:36,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:30:36,793 INFO L130 PetriNetUnfolder]: 129/304 cut-off events. [2022-11-18 20:30:36,793 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-18 20:30:36,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 304 events. 129/304 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1298 event pairs, 24 based on Foata normal form. 28/199 useless extension candidates. Maximal degree in co-relation 401. Up to 169 conditions per place. [2022-11-18 20:30:36,800 INFO L137 encePairwiseOnDemand]: 87/102 looper letters, 17 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2022-11-18 20:30:36,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 229 flow [2022-11-18 20:30:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:30:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2022-11-18 20:30:36,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8954248366013072 [2022-11-18 20:30:36,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2022-11-18 20:30:36,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2022-11-18 20:30:36,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:30:36,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2022-11-18 20:30:36,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:36,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:36,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:36,844 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 171 flow. Second operand 3 states and 274 transitions. [2022-11-18 20:30:36,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 229 flow [2022-11-18 20:30:36,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 221 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:30:36,853 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 209 flow [2022-11-18 20:30:36,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2022-11-18 20:30:36,859 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2022-11-18 20:30:36,860 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 209 flow [2022-11-18 20:30:36,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:36,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:36,860 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:36,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:30:36,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:36,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash 104939503, now seen corresponding path program 1 times [2022-11-18 20:30:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:36,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234745307] [2022-11-18 20:30:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:36,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:36,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:36,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234745307] [2022-11-18 20:30:36,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234745307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:36,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:36,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:36,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497485961] [2022-11-18 20:30:36,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:36,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:36,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:36,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:36,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:36,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 102 [2022-11-18 20:30:36,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:36,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:36,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 102 [2022-11-18 20:30:36,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:30:37,160 INFO L130 PetriNetUnfolder]: 161/389 cut-off events. [2022-11-18 20:30:37,160 INFO L131 PetriNetUnfolder]: For 56/144 co-relation queries the response was YES. [2022-11-18 20:30:37,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 389 events. 161/389 cut-off events. For 56/144 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1835 event pairs, 30 based on Foata normal form. 5/243 useless extension candidates. Maximal degree in co-relation 577. Up to 173 conditions per place. [2022-11-18 20:30:37,172 INFO L137 encePairwiseOnDemand]: 96/102 looper letters, 29 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2022-11-18 20:30:37,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 314 flow [2022-11-18 20:30:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:30:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2022-11-18 20:30:37,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8496732026143791 [2022-11-18 20:30:37,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2022-11-18 20:30:37,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2022-11-18 20:30:37,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:30:37,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2022-11-18 20:30:37,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:37,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:37,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:37,189 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 209 flow. Second operand 3 states and 260 transitions. [2022-11-18 20:30:37,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 314 flow [2022-11-18 20:30:37,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 93 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:30:37,201 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 234 flow [2022-11-18 20:30:37,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2022-11-18 20:30:37,206 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2022-11-18 20:30:37,207 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 234 flow [2022-11-18 20:30:37,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:37,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:37,209 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:37,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:30:37,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:37,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:37,211 INFO L85 PathProgramCache]: Analyzing trace with hash 104939537, now seen corresponding path program 1 times [2022-11-18 20:30:37,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:37,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093226878] [2022-11-18 20:30:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:37,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:37,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:37,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093226878] [2022-11-18 20:30:37,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093226878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:37,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602969538] [2022-11-18 20:30:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:37,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:37,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:37,411 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:37,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:30:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:37,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:30:37,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:37,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:37,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602969538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:37,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:37,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-18 20:30:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208086946] [2022-11-18 20:30:37,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:37,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:30:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:30:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:30:37,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-18 20:30:37,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 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) [2022-11-18 20:30:37,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:37,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-18 20:30:37,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:30:37,990 INFO L130 PetriNetUnfolder]: 219/659 cut-off events. [2022-11-18 20:30:37,990 INFO L131 PetriNetUnfolder]: For 126/175 co-relation queries the response was YES. [2022-11-18 20:30:37,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1225 conditions, 659 events. 219/659 cut-off events. For 126/175 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3562 event pairs, 2 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 701. Up to 213 conditions per place. [2022-11-18 20:30:37,998 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 21 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2022-11-18 20:30:37,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 391 flow [2022-11-18 20:30:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:30:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:30:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 530 transitions. [2022-11-18 20:30:38,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8660130718954249 [2022-11-18 20:30:38,001 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 530 transitions. [2022-11-18 20:30:38,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 530 transitions. [2022-11-18 20:30:38,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:30:38,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 530 transitions. [2022-11-18 20:30:38,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:38,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:38,007 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:38,007 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 234 flow. Second operand 6 states and 530 transitions. [2022-11-18 20:30:38,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 391 flow [2022-11-18 20:30:38,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 105 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:30:38,012 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 358 flow [2022-11-18 20:30:38,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2022-11-18 20:30:38,013 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2022-11-18 20:30:38,014 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 358 flow [2022-11-18 20:30:38,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 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) [2022-11-18 20:30:38,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:38,015 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:38,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:30:38,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:38,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:38,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1078330672, now seen corresponding path program 1 times [2022-11-18 20:30:38,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:38,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834213857] [2022-11-18 20:30:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:38,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:38,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834213857] [2022-11-18 20:30:38,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834213857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:38,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451615353] [2022-11-18 20:30:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:38,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:38,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:38,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:38,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:30:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:38,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:30:38,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:38,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:38,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451615353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:38,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:38,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-18 20:30:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802839117] [2022-11-18 20:30:38,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:38,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:30:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:30:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:30:38,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-18 20:30:38,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 358 flow. Second operand has 8 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:38,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:38,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-18 20:30:38,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:30:39,010 INFO L130 PetriNetUnfolder]: 521/1835 cut-off events. [2022-11-18 20:30:39,010 INFO L131 PetriNetUnfolder]: For 2314/2663 co-relation queries the response was YES. [2022-11-18 20:30:39,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 1835 events. 521/1835 cut-off events. For 2314/2663 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14118 event pairs, 10 based on Foata normal form. 153/1661 useless extension candidates. Maximal degree in co-relation 2111. Up to 445 conditions per place. [2022-11-18 20:30:39,034 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 51 selfloop transitions, 41 changer transitions 0/157 dead transitions. [2022-11-18 20:30:39,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 157 transitions, 919 flow [2022-11-18 20:30:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:30:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:30:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 722 transitions. [2022-11-18 20:30:39,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848039215686274 [2022-11-18 20:30:39,038 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 722 transitions. [2022-11-18 20:30:39,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 722 transitions. [2022-11-18 20:30:39,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:30:39,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 722 transitions. [2022-11-18 20:30:39,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.25) internal successors, (722), 8 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,046 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,046 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 358 flow. Second operand 8 states and 722 transitions. [2022-11-18 20:30:39,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 157 transitions, 919 flow [2022-11-18 20:30:39,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 873 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-11-18 20:30:39,059 INFO L231 Difference]: Finished difference. Result has 95 places, 135 transitions, 863 flow [2022-11-18 20:30:39,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=863, PETRI_PLACES=95, PETRI_TRANSITIONS=135} [2022-11-18 20:30:39,062 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2022-11-18 20:30:39,062 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 135 transitions, 863 flow [2022-11-18 20:30:39,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:39,063 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] [2022-11-18 20:30:39,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:39,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:39,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1781447959, now seen corresponding path program 1 times [2022-11-18 20:30:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:39,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938128376] [2022-11-18 20:30:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:39,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:39,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:39,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938128376] [2022-11-18 20:30:39,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938128376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:39,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:39,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33014546] [2022-11-18 20:30:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:39,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:30:39,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:30:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:30:39,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-18 20:30:39,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 135 transitions, 863 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:39,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-18 20:30:39,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:30:39,876 INFO L130 PetriNetUnfolder]: 751/2662 cut-off events. [2022-11-18 20:30:39,876 INFO L131 PetriNetUnfolder]: For 7322/7886 co-relation queries the response was YES. [2022-11-18 20:30:39,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 2662 events. 751/2662 cut-off events. For 7322/7886 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 22710 event pairs, 18 based on Foata normal form. 109/2319 useless extension candidates. Maximal degree in co-relation 4821. Up to 525 conditions per place. [2022-11-18 20:30:39,913 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 79 selfloop transitions, 35 changer transitions 0/179 dead transitions. [2022-11-18 20:30:39,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 179 transitions, 1531 flow [2022-11-18 20:30:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:30:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:30:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2022-11-18 20:30:39,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2022-11-18 20:30:39,918 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2022-11-18 20:30:39,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2022-11-18 20:30:39,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:30:39,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2022-11-18 20:30:39,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,922 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,923 INFO L175 Difference]: Start difference. First operand has 95 places, 135 transitions, 863 flow. Second operand 4 states and 352 transitions. [2022-11-18 20:30:39,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 179 transitions, 1531 flow [2022-11-18 20:30:39,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1451 flow, removed 40 selfloop flow, removed 0 redundant places. [2022-11-18 20:30:39,971 INFO L231 Difference]: Finished difference. Result has 100 places, 161 transitions, 1303 flow [2022-11-18 20:30:39,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1303, PETRI_PLACES=100, PETRI_TRANSITIONS=161} [2022-11-18 20:30:39,972 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2022-11-18 20:30:39,972 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 161 transitions, 1303 flow [2022-11-18 20:30:39,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:39,973 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:39,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:30:39,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:39,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash 147883295, now seen corresponding path program 1 times [2022-11-18 20:30:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:39,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102647696] [2022-11-18 20:30:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:40,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:40,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102647696] [2022-11-18 20:30:40,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102647696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:40,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:40,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:40,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926296822] [2022-11-18 20:30:40,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:40,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:40,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:40,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:40,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 102 [2022-11-18 20:30:40,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 161 transitions, 1303 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:40,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 102 [2022-11-18 20:30:40,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:30:40,836 INFO L130 PetriNetUnfolder]: 1600/4633 cut-off events. [2022-11-18 20:30:40,837 INFO L131 PetriNetUnfolder]: For 17107/17447 co-relation queries the response was YES. [2022-11-18 20:30:40,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12268 conditions, 4633 events. 1600/4633 cut-off events. For 17107/17447 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 44105 event pairs, 178 based on Foata normal form. 78/3795 useless extension candidates. Maximal degree in co-relation 11208. Up to 1124 conditions per place. [2022-11-18 20:30:40,904 INFO L137 encePairwiseOnDemand]: 96/102 looper letters, 141 selfloop transitions, 5 changer transitions 0/210 dead transitions. [2022-11-18 20:30:40,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 210 transitions, 2181 flow [2022-11-18 20:30:40,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:40,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:30:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-11-18 20:30:40,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8464052287581699 [2022-11-18 20:30:40,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2022-11-18 20:30:40,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2022-11-18 20:30:40,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:30:40,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2022-11-18 20:30:40,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,917 INFO L175 Difference]: Start difference. First operand has 100 places, 161 transitions, 1303 flow. Second operand 3 states and 259 transitions. [2022-11-18 20:30:40,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 210 transitions, 2181 flow [2022-11-18 20:30:40,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 210 transitions, 2168 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-18 20:30:40,961 INFO L231 Difference]: Finished difference. Result has 103 places, 163 transitions, 1324 flow [2022-11-18 20:30:40,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1324, PETRI_PLACES=103, PETRI_TRANSITIONS=163} [2022-11-18 20:30:40,965 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 25 predicate places. [2022-11-18 20:30:40,965 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 163 transitions, 1324 flow [2022-11-18 20:30:40,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:40,966 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:40,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:30:40,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:40,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:40,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1483966816, now seen corresponding path program 1 times [2022-11-18 20:30:40,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:40,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019619481] [2022-11-18 20:30:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:40,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:41,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:41,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019619481] [2022-11-18 20:30:41,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019619481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:41,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187264490] [2022-11-18 20:30:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:41,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:41,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:41,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:41,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:30:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:41,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:30:41,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:41,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:30:41,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187264490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:41,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:30:41,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-18 20:30:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972047261] [2022-11-18 20:30:41,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:41,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:30:41,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:30:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:30:41,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-18 20:30:41,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 163 transitions, 1324 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:41,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:41,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-18 20:30:41,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:30:42,148 INFO L130 PetriNetUnfolder]: 1199/4182 cut-off events. [2022-11-18 20:30:42,148 INFO L131 PetriNetUnfolder]: For 17511/18514 co-relation queries the response was YES. [2022-11-18 20:30:42,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11613 conditions, 4182 events. 1199/4182 cut-off events. For 17511/18514 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 39226 event pairs, 55 based on Foata normal form. 213/3830 useless extension candidates. Maximal degree in co-relation 6670. Up to 818 conditions per place. [2022-11-18 20:30:42,220 INFO L137 encePairwiseOnDemand]: 92/102 looper letters, 98 selfloop transitions, 74 changer transitions 0/239 dead transitions. [2022-11-18 20:30:42,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 239 transitions, 2636 flow [2022-11-18 20:30:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:30:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:30:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2022-11-18 20:30:42,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-11-18 20:30:42,223 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2022-11-18 20:30:42,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2022-11-18 20:30:42,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:30:42,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2022-11-18 20:30:42,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:42,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:42,226 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:42,226 INFO L175 Difference]: Start difference. First operand has 103 places, 163 transitions, 1324 flow. Second operand 4 states and 358 transitions. [2022-11-18 20:30:42,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 239 transitions, 2636 flow [2022-11-18 20:30:42,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 239 transitions, 2626 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:30:42,352 INFO L231 Difference]: Finished difference. Result has 106 places, 223 transitions, 2509 flow [2022-11-18 20:30:42,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2509, PETRI_PLACES=106, PETRI_TRANSITIONS=223} [2022-11-18 20:30:42,354 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2022-11-18 20:30:42,354 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 223 transitions, 2509 flow [2022-11-18 20:30:42,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:42,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:42,355 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:42,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:42,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:30:42,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:42,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:42,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2124675729, now seen corresponding path program 1 times [2022-11-18 20:30:42,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:42,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051334975] [2022-11-18 20:30:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:42,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:42,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:42,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051334975] [2022-11-18 20:30:42,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051334975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:42,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186575951] [2022-11-18 20:30:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:42,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:42,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:42,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:42,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:30:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:42,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:30:42,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:42,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:30:42,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186575951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:42,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:30:42,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-18 20:30:42,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366763856] [2022-11-18 20:30:42,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:42,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:30:42,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:30:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:30:42,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-18 20:30:42,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 223 transitions, 2509 flow. Second operand has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:42,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:42,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-18 20:30:42,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:30:44,304 INFO L130 PetriNetUnfolder]: 1714/6166 cut-off events. [2022-11-18 20:30:44,305 INFO L131 PetriNetUnfolder]: For 40758/42796 co-relation queries the response was YES. [2022-11-18 20:30:44,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17678 conditions, 6166 events. 1714/6166 cut-off events. For 40758/42796 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 62881 event pairs, 34 based on Foata normal form. 652/5914 useless extension candidates. Maximal degree in co-relation 15505. Up to 1190 conditions per place. [2022-11-18 20:30:44,402 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 89 selfloop transitions, 135 changer transitions 0/291 dead transitions. [2022-11-18 20:30:44,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 291 transitions, 3887 flow [2022-11-18 20:30:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:30:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:30:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2022-11-18 20:30:44,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2022-11-18 20:30:44,407 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2022-11-18 20:30:44,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2022-11-18 20:30:44,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:30:44,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2022-11-18 20:30:44,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:44,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:44,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:44,421 INFO L175 Difference]: Start difference. First operand has 106 places, 223 transitions, 2509 flow. Second operand 5 states and 450 transitions. [2022-11-18 20:30:44,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 291 transitions, 3887 flow [2022-11-18 20:30:44,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 291 transitions, 3751 flow, removed 68 selfloop flow, removed 0 redundant places. [2022-11-18 20:30:44,481 INFO L231 Difference]: Finished difference. Result has 113 places, 279 transitions, 3841 flow [2022-11-18 20:30:44,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3841, PETRI_PLACES=113, PETRI_TRANSITIONS=279} [2022-11-18 20:30:44,482 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2022-11-18 20:30:44,482 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 279 transitions, 3841 flow [2022-11-18 20:30:44,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:44,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:44,483 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:44,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:44,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:44,689 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:44,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:44,689 INFO L85 PathProgramCache]: Analyzing trace with hash -517162754, now seen corresponding path program 1 times [2022-11-18 20:30:44,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:44,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956492121] [2022-11-18 20:30:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:44,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:44,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:44,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956492121] [2022-11-18 20:30:44,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956492121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:44,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082124995] [2022-11-18 20:30:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:44,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:44,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:44,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:44,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:30:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:44,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:30:44,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:45,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:45,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082124995] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:45,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:45,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-18 20:30:45,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090058470] [2022-11-18 20:30:45,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:45,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:30:45,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:45,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:30:45,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:30:45,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-18 20:30:45,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 279 transitions, 3841 flow. Second operand has 9 states, 9 states have (on average 81.77777777777777) internal successors, (736), 9 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:45,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:45,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-18 20:30:45,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:30:49,754 INFO L130 PetriNetUnfolder]: 6181/21994 cut-off events. [2022-11-18 20:30:49,754 INFO L131 PetriNetUnfolder]: For 185771/189132 co-relation queries the response was YES. [2022-11-18 20:30:49,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70077 conditions, 21994 events. 6181/21994 cut-off events. For 185771/189132 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 247761 event pairs, 38 based on Foata normal form. 1398/20341 useless extension candidates. Maximal degree in co-relation 62695. Up to 4210 conditions per place. [2022-11-18 20:30:50,081 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 249 selfloop transitions, 487 changer transitions 0/803 dead transitions. [2022-11-18 20:30:50,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 803 transitions, 13954 flow [2022-11-18 20:30:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:30:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:30:50,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 812 transitions. [2022-11-18 20:30:50,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8845315904139434 [2022-11-18 20:30:50,084 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 812 transitions. [2022-11-18 20:30:50,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 812 transitions. [2022-11-18 20:30:50,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:30:50,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 812 transitions. [2022-11-18 20:30:50,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.22222222222223) internal successors, (812), 9 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:50,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 102.0) internal successors, (1020), 10 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:50,092 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 102.0) internal successors, (1020), 10 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:50,092 INFO L175 Difference]: Start difference. First operand has 113 places, 279 transitions, 3841 flow. Second operand 9 states and 812 transitions. [2022-11-18 20:30:50,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 803 transitions, 13954 flow [2022-11-18 20:30:50,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 803 transitions, 13446 flow, removed 254 selfloop flow, removed 0 redundant places. [2022-11-18 20:30:50,434 INFO L231 Difference]: Finished difference. Result has 127 places, 695 transitions, 12975 flow [2022-11-18 20:30:50,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=3733, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12975, PETRI_PLACES=127, PETRI_TRANSITIONS=695} [2022-11-18 20:30:50,435 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 49 predicate places. [2022-11-18 20:30:50,435 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 695 transitions, 12975 flow [2022-11-18 20:30:50,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.77777777777777) internal successors, (736), 9 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:50,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:30:50,436 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:50,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:50,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:50,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:30:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash 756072459, now seen corresponding path program 1 times [2022-11-18 20:30:50,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:50,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59818763] [2022-11-18 20:30:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:50,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:50,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:50,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59818763] [2022-11-18 20:30:50,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59818763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:50,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039981229] [2022-11-18 20:30:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:50,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:50,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:50,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:50,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:30:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:50,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:30:50,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:50,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:51,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039981229] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:51,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:51,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:30:51,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698896522] [2022-11-18 20:30:51,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:51,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:30:51,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:51,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:30:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:30:51,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-18 20:30:51,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 695 transitions, 12975 flow. Second operand has 11 states, 11 states have (on average 81.63636363636364) internal successors, (898), 11 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:51,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:30:51,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-18 20:30:51,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:31:04,034 INFO L130 PetriNetUnfolder]: 15953/60705 cut-off events. [2022-11-18 20:31:04,035 INFO L131 PetriNetUnfolder]: For 936218/941779 co-relation queries the response was YES. [2022-11-18 20:31:04,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194050 conditions, 60705 events. 15953/60705 cut-off events. For 936218/941779 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 836276 event pairs, 142 based on Foata normal form. 8449/60337 useless extension candidates. Maximal degree in co-relation 141065. Up to 9804 conditions per place. [2022-11-18 20:31:05,057 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 565 selfloop transitions, 1122 changer transitions 0/1754 dead transitions. [2022-11-18 20:31:05,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 1754 transitions, 36456 flow [2022-11-18 20:31:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:31:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:31:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 996 transitions. [2022-11-18 20:31:05,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877005347593583 [2022-11-18 20:31:05,060 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 996 transitions. [2022-11-18 20:31:05,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 996 transitions. [2022-11-18 20:31:05,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:31:05,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 996 transitions. [2022-11-18 20:31:05,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.54545454545455) internal successors, (996), 11 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:05,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 102.0) internal successors, (1224), 12 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:05,067 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 102.0) internal successors, (1224), 12 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:05,067 INFO L175 Difference]: Start difference. First operand has 127 places, 695 transitions, 12975 flow. Second operand 11 states and 996 transitions. [2022-11-18 20:31:05,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 1754 transitions, 36456 flow [2022-11-18 20:31:06,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 1754 transitions, 33816 flow, removed 1182 selfloop flow, removed 2 redundant places. [2022-11-18 20:31:06,032 INFO L231 Difference]: Finished difference. Result has 143 places, 1710 transitions, 37230 flow [2022-11-18 20:31:06,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=12165, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=37230, PETRI_PLACES=143, PETRI_TRANSITIONS=1710} [2022-11-18 20:31:06,033 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 65 predicate places. [2022-11-18 20:31:06,033 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 1710 transitions, 37230 flow [2022-11-18 20:31:06,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.63636363636364) internal successors, (898), 11 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:06,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:31:06,034 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:06,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:06,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:31:06,235 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:31:06,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash -137224160, now seen corresponding path program 1 times [2022-11-18 20:31:06,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:06,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805583477] [2022-11-18 20:31:06,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:06,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:06,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:06,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805583477] [2022-11-18 20:31:06,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805583477] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:06,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380667333] [2022-11-18 20:31:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:06,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:06,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:06,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:06,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93372949-2dca-4cd7-9ceb-70ad803218b7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:31:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:06,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:31:06,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:06,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:06,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380667333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:06,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:06,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-18 20:31:06,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49892085] [2022-11-18 20:31:06,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:06,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:31:06,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:31:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=93, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:31:06,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-18 20:31:06,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 1710 transitions, 37230 flow. Second operand has 14 states, 14 states have (on average 81.5) internal successors, (1141), 14 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) [2022-11-18 20:31:06,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:31:06,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-18 20:31:06,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand