./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.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_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/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_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/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_441cfb02-f59a-4edf-b2cd-76eb0509f81e/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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- 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 19:33:48,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:33:48,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:33:49,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:33:49,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:33:49,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:33:49,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:33:49,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:33:49,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:33:49,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:33:49,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:33:49,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:33:49,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:33:49,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:33:49,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:33:49,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:33:49,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:33:49,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:33:49,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:33:49,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:33:49,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:33:49,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:33:49,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:33:49,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:33:49,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:33:49,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:33:49,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:33:49,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:33:49,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:33:49,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:33:49,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:33:49,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:33:49,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:33:49,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:33:49,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:33:49,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:33:49,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:33:49,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:33:49,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:33:49,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:33:49,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:33:49,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:33:49,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:33:49,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:33:49,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:33:49,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:33:49,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:33:49,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:33:49,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:33:49,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:33:49,144 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:33:49,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:33:49,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:33:49,146 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:33:49,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:33:49,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:33:49,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:33:49,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:33:49,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:33:49,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:33:49,147 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:33:49,147 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:33:49,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:33:49,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:33:49,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:33:49,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:33:49,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:33:49,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:33:49,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:49,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:33:49,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:33:49,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:33:49,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:33:49,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:33:49,152 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:33:49,152 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:33:49,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:33:49,152 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_441cfb02-f59a-4edf-b2cd-76eb0509f81e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-11-18 19:33:49,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:33:49,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:33:49,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:33:49,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:33:49,554 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:33:49,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-18 19:33:49,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/data/31a75b050/603d9d58ec6e4cd4b43ff3adc07aff91/FLAG06ce48951 [2022-11-18 19:33:50,194 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:33:50,194 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-18 19:33:50,203 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/data/31a75b050/603d9d58ec6e4cd4b43ff3adc07aff91/FLAG06ce48951 [2022-11-18 19:33:50,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/data/31a75b050/603d9d58ec6e4cd4b43ff3adc07aff91 [2022-11-18 19:33:50,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:33:50,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:33:50,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:50,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:33:50,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:33:50,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:50,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f2c396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50, skipping insertion in model container [2022-11-18 19:33:50,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:50,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:33:50,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:33:50,834 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_441cfb02-f59a-4edf-b2cd-76eb0509f81e/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-18 19:33:50,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:50,850 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:33:50,878 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_441cfb02-f59a-4edf-b2cd-76eb0509f81e/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-18 19:33:50,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:50,897 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:33:50,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50 WrapperNode [2022-11-18 19:33:50,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:50,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:50,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:33:50,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:33:50,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:50,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:50,971 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 201 [2022-11-18 19:33:50,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:50,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:33:50,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:33:50,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:33:50,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:50,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:50,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:50,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:51,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:51,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:51,010 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:51,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:51,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:33:51,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:33:51,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:33:51,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:33:51,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (1/1) ... [2022-11-18 19:33:51,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:51,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:51,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:33:51,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:33:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:33:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:33:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:33:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:33:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:33:51,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:33:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:33:51,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:33:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:33:51,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:33:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:33:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:33:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:33:51,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:33:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:33:51,122 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 19:33:51,271 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:33:51,273 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:33:51,955 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:33:51,969 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:33:51,969 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-18 19:33:51,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:51 BoogieIcfgContainer [2022-11-18 19:33:51,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:33:51,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:33:51,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:33:51,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:33:51,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:33:50" (1/3) ... [2022-11-18 19:33:51,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400880b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:51, skipping insertion in model container [2022-11-18 19:33:51,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:50" (2/3) ... [2022-11-18 19:33:51,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400880b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:51, skipping insertion in model container [2022-11-18 19:33:51,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:51" (3/3) ... [2022-11-18 19:33:51,985 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-11-18 19:33:51,997 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:33:52,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:33:52,010 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 19:33:52,010 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:33:52,197 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:33:52,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 321 transitions, 666 flow [2022-11-18 19:33:52,424 INFO L130 PetriNetUnfolder]: 25/318 cut-off events. [2022-11-18 19:33:52,424 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:33:52,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 25/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 263 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 258. Up to 2 conditions per place. [2022-11-18 19:33:52,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 321 transitions, 666 flow [2022-11-18 19:33:52,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 282 transitions, 579 flow [2022-11-18 19:33:52,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:33:52,478 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;@2a5013fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:33:52,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-18 19:33:52,496 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-18 19:33:52,496 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:33:52,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:52,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:52,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:33:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1327915382, now seen corresponding path program 1 times [2022-11-18 19:33:52,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:52,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333999525] [2022-11-18 19:33:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:52,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:52,973 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 19:33:52,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:52,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333999525] [2022-11-18 19:33:52,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333999525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:52,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:52,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:52,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951093003] [2022-11-18 19:33:52,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:52,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:52,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:53,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:53,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-18 19:33:53,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 282 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states 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 19:33:53,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:53,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-18 19:33:53,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:53,401 INFO L130 PetriNetUnfolder]: 13/417 cut-off events. [2022-11-18 19:33:53,402 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 19:33:53,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 417 events. 13/417 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 877 event pairs, 0 based on Foata normal form. 28/401 useless extension candidates. Maximal degree in co-relation 458. Up to 57 conditions per place. [2022-11-18 19:33:53,409 INFO L137 encePairwiseOnDemand]: 278/321 looper letters, 74 selfloop transitions, 19 changer transitions 9/306 dead transitions. [2022-11-18 19:33:53,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 306 transitions, 828 flow [2022-11-18 19:33:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1365 transitions. [2022-11-18 19:33:53,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8504672897196262 [2022-11-18 19:33:53,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1365 transitions. [2022-11-18 19:33:53,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1365 transitions. [2022-11-18 19:33:53,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:53,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1365 transitions. [2022-11-18 19:33:53,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states 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 19:33:53,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 19:33:53,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 19:33:53,466 INFO L175 Difference]: Start difference. First operand has 269 places, 282 transitions, 579 flow. Second operand 5 states and 1365 transitions. [2022-11-18 19:33:53,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 306 transitions, 828 flow [2022-11-18 19:33:53,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 306 transitions, 810 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:53,487 INFO L231 Difference]: Finished difference. Result has 271 places, 272 transitions, 661 flow [2022-11-18 19:33:53,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=661, PETRI_PLACES=271, PETRI_TRANSITIONS=272} [2022-11-18 19:33:53,499 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 2 predicate places. [2022-11-18 19:33:53,500 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 272 transitions, 661 flow [2022-11-18 19:33:53,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states 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 19:33:53,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:53,502 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:53,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:33:53,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:33:53,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:53,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1246802243, now seen corresponding path program 1 times [2022-11-18 19:33:53,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:53,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800980519] [2022-11-18 19:33:53,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:53,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:53,848 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 19:33:53,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:53,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800980519] [2022-11-18 19:33:53,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800980519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:53,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824576523] [2022-11-18 19:33:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:53,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:53,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:53,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:53,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:33:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:54,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:33:54,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:54,150 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 19:33:54,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:54,254 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 19:33:54,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824576523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:54,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:54,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:33:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109779135] [2022-11-18 19:33:54,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:54,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:33:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:33:54,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:33:54,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-18 19:33:54,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 272 transitions, 661 flow. Second operand has 12 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states 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 19:33:54,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:54,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-18 19:33:54,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:55,115 INFO L130 PetriNetUnfolder]: 31/865 cut-off events. [2022-11-18 19:33:55,115 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-18 19:33:55,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 865 events. 31/865 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3386 event pairs, 0 based on Foata normal form. 12/812 useless extension candidates. Maximal degree in co-relation 476. Up to 46 conditions per place. [2022-11-18 19:33:55,123 INFO L137 encePairwiseOnDemand]: 290/321 looper letters, 137 selfloop transitions, 84 changer transitions 0/425 dead transitions. [2022-11-18 19:33:55,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 425 transitions, 1539 flow [2022-11-18 19:33:55,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:33:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:33:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4697 transitions. [2022-11-18 19:33:55,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8129110418830044 [2022-11-18 19:33:55,135 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4697 transitions. [2022-11-18 19:33:55,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4697 transitions. [2022-11-18 19:33:55,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:55,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4697 transitions. [2022-11-18 19:33:55,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 260.94444444444446) internal successors, (4697), 18 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states 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 19:33:55,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states 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 19:33:55,168 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states 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 19:33:55,168 INFO L175 Difference]: Start difference. First operand has 271 places, 272 transitions, 661 flow. Second operand 18 states and 4697 transitions. [2022-11-18 19:33:55,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 425 transitions, 1539 flow [2022-11-18 19:33:55,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 425 transitions, 1528 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:55,181 INFO L231 Difference]: Finished difference. Result has 282 places, 329 transitions, 1152 flow [2022-11-18 19:33:55,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1152, PETRI_PLACES=282, PETRI_TRANSITIONS=329} [2022-11-18 19:33:55,183 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 13 predicate places. [2022-11-18 19:33:55,183 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 329 transitions, 1152 flow [2022-11-18 19:33:55,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states 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 19:33:55,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:55,186 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:55,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:55,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 19:33:55,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:33:55,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash -3835432, now seen corresponding path program 1 times [2022-11-18 19:33:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:55,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822543081] [2022-11-18 19:33:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:55,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:55,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:55,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822543081] [2022-11-18 19:33:55,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822543081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:55,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135865662] [2022-11-18 19:33:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:55,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:55,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:55,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:55,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:33:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:33:55,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:55,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:55,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135865662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:55,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:55,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:33:55,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388194900] [2022-11-18 19:33:55,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:55,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:55,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:55,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:55,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-18 19:33:55,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 329 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states 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 19:33:55,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:55,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-18 19:33:55,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:56,176 INFO L130 PetriNetUnfolder]: 31/849 cut-off events. [2022-11-18 19:33:56,176 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2022-11-18 19:33:56,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 849 events. 31/849 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3263 event pairs, 0 based on Foata normal form. 16/800 useless extension candidates. Maximal degree in co-relation 976. Up to 84 conditions per place. [2022-11-18 19:33:56,184 INFO L137 encePairwiseOnDemand]: 298/321 looper letters, 75 selfloop transitions, 59 changer transitions 0/338 dead transitions. [2022-11-18 19:33:56,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 338 transitions, 1376 flow [2022-11-18 19:33:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:33:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:33:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1829 transitions. [2022-11-18 19:33:56,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8139741878059635 [2022-11-18 19:33:56,190 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1829 transitions. [2022-11-18 19:33:56,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1829 transitions. [2022-11-18 19:33:56,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:56,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1829 transitions. [2022-11-18 19:33:56,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.2857142857143) internal successors, (1829), 7 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states 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 19:33:56,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 19:33:56,202 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 19:33:56,202 INFO L175 Difference]: Start difference. First operand has 282 places, 329 transitions, 1152 flow. Second operand 7 states and 1829 transitions. [2022-11-18 19:33:56,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 338 transitions, 1376 flow [2022-11-18 19:33:56,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 338 transitions, 1218 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:56,214 INFO L231 Difference]: Finished difference. Result has 275 places, 313 transitions, 1004 flow [2022-11-18 19:33:56,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1004, PETRI_PLACES=275, PETRI_TRANSITIONS=313} [2022-11-18 19:33:56,216 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 6 predicate places. [2022-11-18 19:33:56,216 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 313 transitions, 1004 flow [2022-11-18 19:33:56,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states 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 19:33:56,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:56,218 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:56,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:56,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:56,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:33:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:56,425 INFO L85 PathProgramCache]: Analyzing trace with hash 517403306, now seen corresponding path program 2 times [2022-11-18 19:33:56,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:56,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937025412] [2022-11-18 19:33:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:56,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:56,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:56,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937025412] [2022-11-18 19:33:56,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937025412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252273064] [2022-11-18 19:33:56,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:33:56,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:56,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:56,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:56,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:33:56,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:33:56,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:56,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:33:56,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 19:33:57,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 19:33:57,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252273064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:57,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:57,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 19:33:57,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795743918] [2022-11-18 19:33:57,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:57,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:33:57,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:57,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:33:57,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:33:57,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 321 [2022-11-18 19:33:57,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 313 transitions, 1004 flow. Second operand has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states 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 19:33:57,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:57,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 321 [2022-11-18 19:33:57,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:58,886 INFO L130 PetriNetUnfolder]: 183/1793 cut-off events. [2022-11-18 19:33:58,886 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2022-11-18 19:33:58,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 1793 events. 183/1793 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10603 event pairs, 84 based on Foata normal form. 8/1542 useless extension candidates. Maximal degree in co-relation 1554. Up to 69 conditions per place. [2022-11-18 19:33:58,906 INFO L137 encePairwiseOnDemand]: 286/321 looper letters, 230 selfloop transitions, 109 changer transitions 0/513 dead transitions. [2022-11-18 19:33:58,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 513 transitions, 2210 flow [2022-11-18 19:33:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:33:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 19:33:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5555 transitions. [2022-11-18 19:33:58,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7210539979231568 [2022-11-18 19:33:58,922 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5555 transitions. [2022-11-18 19:33:58,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5555 transitions. [2022-11-18 19:33:58,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:58,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5555 transitions. [2022-11-18 19:33:58,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 231.45833333333334) internal successors, (5555), 24 states have internal predecessors, (5555), 0 states have call successors, (0), 0 states 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 19:33:58,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states 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 19:33:58,964 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states 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 19:33:58,964 INFO L175 Difference]: Start difference. First operand has 275 places, 313 transitions, 1004 flow. Second operand 24 states and 5555 transitions. [2022-11-18 19:33:58,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 513 transitions, 2210 flow [2022-11-18 19:33:59,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 513 transitions, 2086 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 19:33:59,018 INFO L231 Difference]: Finished difference. Result has 286 places, 335 transitions, 1225 flow [2022-11-18 19:33:59,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1225, PETRI_PLACES=286, PETRI_TRANSITIONS=335} [2022-11-18 19:33:59,019 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 17 predicate places. [2022-11-18 19:33:59,019 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 335 transitions, 1225 flow [2022-11-18 19:33:59,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states 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 19:33:59,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:59,022 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:59,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:59,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:33:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1002795852, now seen corresponding path program 1 times [2022-11-18 19:33:59,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:59,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663260611] [2022-11-18 19:33:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:59,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,447 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 19:33:59,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:59,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663260611] [2022-11-18 19:33:59,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663260611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:59,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:59,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:59,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743190880] [2022-11-18 19:33:59,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:59,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:59,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 19:33:59,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 335 transitions, 1225 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 19:33:59,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:59,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 19:33:59,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:00,139 INFO L130 PetriNetUnfolder]: 386/2437 cut-off events. [2022-11-18 19:34:00,139 INFO L131 PetriNetUnfolder]: For 215/264 co-relation queries the response was YES. [2022-11-18 19:34:00,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 2437 events. 386/2437 cut-off events. For 215/264 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 17985 event pairs, 147 based on Foata normal form. 0/2185 useless extension candidates. Maximal degree in co-relation 911. Up to 477 conditions per place. [2022-11-18 19:34:00,164 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 32 selfloop transitions, 4 changer transitions 0/353 dead transitions. [2022-11-18 19:34:00,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 353 transitions, 1344 flow [2022-11-18 19:34:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:34:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1453 transitions. [2022-11-18 19:34:00,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9052959501557633 [2022-11-18 19:34:00,171 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1453 transitions. [2022-11-18 19:34:00,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1453 transitions. [2022-11-18 19:34:00,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:00,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1453 transitions. [2022-11-18 19:34:00,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.6) internal successors, (1453), 5 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states 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 19:34:00,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 19:34:00,183 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 19:34:00,183 INFO L175 Difference]: Start difference. First operand has 286 places, 335 transitions, 1225 flow. Second operand 5 states and 1453 transitions. [2022-11-18 19:34:00,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 353 transitions, 1344 flow [2022-11-18 19:34:00,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 353 transitions, 1177 flow, removed 17 selfloop flow, removed 15 redundant places. [2022-11-18 19:34:00,193 INFO L231 Difference]: Finished difference. Result has 278 places, 338 transitions, 1088 flow [2022-11-18 19:34:00,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1088, PETRI_PLACES=278, PETRI_TRANSITIONS=338} [2022-11-18 19:34:00,197 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 9 predicate places. [2022-11-18 19:34:00,198 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 338 transitions, 1088 flow [2022-11-18 19:34:00,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 19:34:00,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:00,199 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:00,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:34:00,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:00,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:00,200 INFO L85 PathProgramCache]: Analyzing trace with hash 219156758, now seen corresponding path program 1 times [2022-11-18 19:34:00,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:00,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425239006] [2022-11-18 19:34:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:00,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:00,349 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 19:34:00,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:00,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425239006] [2022-11-18 19:34:00,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425239006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:00,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:00,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251701882] [2022-11-18 19:34:00,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:00,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:34:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:34:00,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:34:00,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 19:34:00,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 338 transitions, 1088 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 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 19:34:00,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:00,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 19:34:00,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:01,081 INFO L130 PetriNetUnfolder]: 526/2514 cut-off events. [2022-11-18 19:34:01,081 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2022-11-18 19:34:01,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 2514 events. 526/2514 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 20614 event pairs, 252 based on Foata normal form. 0/2157 useless extension candidates. Maximal degree in co-relation 3359. Up to 666 conditions per place. [2022-11-18 19:34:01,116 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 31 selfloop transitions, 4 changer transitions 0/355 dead transitions. [2022-11-18 19:34:01,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 355 transitions, 1202 flow [2022-11-18 19:34:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:34:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1452 transitions. [2022-11-18 19:34:01,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046728971962616 [2022-11-18 19:34:01,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1452 transitions. [2022-11-18 19:34:01,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1452 transitions. [2022-11-18 19:34:01,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:01,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1452 transitions. [2022-11-18 19:34:01,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.4) internal successors, (1452), 5 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 19:34:01,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 19:34:01,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 19:34:01,131 INFO L175 Difference]: Start difference. First operand has 278 places, 338 transitions, 1088 flow. Second operand 5 states and 1452 transitions. [2022-11-18 19:34:01,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 355 transitions, 1202 flow [2022-11-18 19:34:01,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 355 transitions, 1200 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:34:01,141 INFO L231 Difference]: Finished difference. Result has 284 places, 341 transitions, 1116 flow [2022-11-18 19:34:01,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1116, PETRI_PLACES=284, PETRI_TRANSITIONS=341} [2022-11-18 19:34:01,142 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 15 predicate places. [2022-11-18 19:34:01,142 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 341 transitions, 1116 flow [2022-11-18 19:34:01,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 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 19:34:01,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:01,144 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:01,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:34:01,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:01,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:01,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1816243509, now seen corresponding path program 1 times [2022-11-18 19:34:01,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:01,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407711852] [2022-11-18 19:34:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:01,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:01,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:01,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407711852] [2022-11-18 19:34:01,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407711852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:01,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768004022] [2022-11-18 19:34:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:01,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:01,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:01,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:01,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:34:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:34:01,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:34:01,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:01,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768004022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:01,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:01,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-18 19:34:01,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974087686] [2022-11-18 19:34:01,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:01,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:01,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:34:01,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 321 [2022-11-18 19:34:01,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 341 transitions, 1116 flow. Second operand has 7 states, 7 states have (on average 240.28571428571428) internal successors, (1682), 7 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states 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 19:34:01,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:01,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 321 [2022-11-18 19:34:01,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:03,259 INFO L130 PetriNetUnfolder]: 623/3966 cut-off events. [2022-11-18 19:34:03,263 INFO L131 PetriNetUnfolder]: For 891/891 co-relation queries the response was YES. [2022-11-18 19:34:03,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 3966 events. 623/3966 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32114 event pairs, 432 based on Foata normal form. 0/3549 useless extension candidates. Maximal degree in co-relation 6197. Up to 1172 conditions per place. [2022-11-18 19:34:03,374 INFO L137 encePairwiseOnDemand]: 297/321 looper letters, 196 selfloop transitions, 63 changer transitions 0/470 dead transitions. [2022-11-18 19:34:03,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 470 transitions, 2104 flow [2022-11-18 19:34:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:34:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:34:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2745 transitions. [2022-11-18 19:34:03,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7774001699235344 [2022-11-18 19:34:03,382 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2745 transitions. [2022-11-18 19:34:03,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2745 transitions. [2022-11-18 19:34:03,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:03,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2745 transitions. [2022-11-18 19:34:03,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 249.54545454545453) internal successors, (2745), 11 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states 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 19:34:03,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states 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 19:34:03,399 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states 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 19:34:03,399 INFO L175 Difference]: Start difference. First operand has 284 places, 341 transitions, 1116 flow. Second operand 11 states and 2745 transitions. [2022-11-18 19:34:03,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 470 transitions, 2104 flow [2022-11-18 19:34:03,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 470 transitions, 2102 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:34:03,414 INFO L231 Difference]: Finished difference. Result has 296 places, 368 transitions, 1391 flow [2022-11-18 19:34:03,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1391, PETRI_PLACES=296, PETRI_TRANSITIONS=368} [2022-11-18 19:34:03,416 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 27 predicate places. [2022-11-18 19:34:03,416 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 368 transitions, 1391 flow [2022-11-18 19:34:03,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.28571428571428) internal successors, (1682), 7 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states 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 19:34:03,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:03,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:03,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:03,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:34:03,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:03,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash -176565671, now seen corresponding path program 1 times [2022-11-18 19:34:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:03,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255232438] [2022-11-18 19:34:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:03,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,918 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 19:34:03,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:03,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255232438] [2022-11-18 19:34:03,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255232438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:03,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:03,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:03,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055959151] [2022-11-18 19:34:03,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:03,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:34:03,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:03,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:34:03,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:03,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 321 [2022-11-18 19:34:03,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 368 transitions, 1391 flow. Second operand has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states 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 19:34:03,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:03,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 321 [2022-11-18 19:34:03,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:05,807 INFO L130 PetriNetUnfolder]: 1259/5239 cut-off events. [2022-11-18 19:34:05,807 INFO L131 PetriNetUnfolder]: For 2027/2118 co-relation queries the response was YES. [2022-11-18 19:34:05,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9493 conditions, 5239 events. 1259/5239 cut-off events. For 2027/2118 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 48747 event pairs, 814 based on Foata normal form. 91/4593 useless extension candidates. Maximal degree in co-relation 8055. Up to 1778 conditions per place. [2022-11-18 19:34:05,859 INFO L137 encePairwiseOnDemand]: 293/321 looper letters, 224 selfloop transitions, 70 changer transitions 0/504 dead transitions. [2022-11-18 19:34:05,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 504 transitions, 2418 flow [2022-11-18 19:34:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:34:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 19:34:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3872 transitions. [2022-11-18 19:34:05,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7538940809968847 [2022-11-18 19:34:05,868 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3872 transitions. [2022-11-18 19:34:05,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3872 transitions. [2022-11-18 19:34:05,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:05,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3872 transitions. [2022-11-18 19:34:05,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 242.0) internal successors, (3872), 16 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 19:34:05,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states 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 19:34:05,890 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states 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 19:34:05,890 INFO L175 Difference]: Start difference. First operand has 296 places, 368 transitions, 1391 flow. Second operand 16 states and 3872 transitions. [2022-11-18 19:34:05,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 504 transitions, 2418 flow [2022-11-18 19:34:05,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 504 transitions, 2413 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:34:05,905 INFO L231 Difference]: Finished difference. Result has 312 places, 377 transitions, 1593 flow [2022-11-18 19:34:05,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1593, PETRI_PLACES=312, PETRI_TRANSITIONS=377} [2022-11-18 19:34:05,906 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 43 predicate places. [2022-11-18 19:34:05,906 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 377 transitions, 1593 flow [2022-11-18 19:34:05,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states 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 19:34:05,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:05,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:05,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:34:05,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:05,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1178567675, now seen corresponding path program 1 times [2022-11-18 19:34:05,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:05,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047184223] [2022-11-18 19:34:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:05,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,073 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 19:34:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:06,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047184223] [2022-11-18 19:34:06,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047184223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:06,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:06,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367033523] [2022-11-18 19:34:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:06,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:06,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:06,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:06,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 19:34:06,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 377 transitions, 1593 flow. Second operand has 6 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 6 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states 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 19:34:06,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:06,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 19:34:06,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:08,688 INFO L130 PetriNetUnfolder]: 3180/9239 cut-off events. [2022-11-18 19:34:08,688 INFO L131 PetriNetUnfolder]: For 2712/2736 co-relation queries the response was YES. [2022-11-18 19:34:08,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17137 conditions, 9239 events. 3180/9239 cut-off events. For 2712/2736 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 89952 event pairs, 793 based on Foata normal form. 198/7989 useless extension candidates. Maximal degree in co-relation 16064. Up to 2952 conditions per place. [2022-11-18 19:34:08,771 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 31 selfloop transitions, 10 changer transitions 0/383 dead transitions. [2022-11-18 19:34:08,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 383 transitions, 1686 flow [2022-11-18 19:34:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:34:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1684 transitions. [2022-11-18 19:34:08,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743509865005192 [2022-11-18 19:34:08,777 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1684 transitions. [2022-11-18 19:34:08,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1684 transitions. [2022-11-18 19:34:08,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:08,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1684 transitions. [2022-11-18 19:34:08,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states 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 19:34:08,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states 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 19:34:08,789 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states 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 19:34:08,789 INFO L175 Difference]: Start difference. First operand has 312 places, 377 transitions, 1593 flow. Second operand 6 states and 1684 transitions. [2022-11-18 19:34:08,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 383 transitions, 1686 flow [2022-11-18 19:34:08,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 383 transitions, 1598 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:34:08,831 INFO L231 Difference]: Finished difference. Result has 309 places, 375 transitions, 1516 flow [2022-11-18 19:34:08,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1516, PETRI_PLACES=309, PETRI_TRANSITIONS=375} [2022-11-18 19:34:08,832 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 40 predicate places. [2022-11-18 19:34:08,833 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 375 transitions, 1516 flow [2022-11-18 19:34:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 6 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states 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 19:34:08,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:08,834 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:08,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:34:08,834 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:08,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:08,835 INFO L85 PathProgramCache]: Analyzing trace with hash 86010365, now seen corresponding path program 1 times [2022-11-18 19:34:08,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:08,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25992148] [2022-11-18 19:34:08,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:08,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:09,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:09,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25992148] [2022-11-18 19:34:09,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25992148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:09,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880171221] [2022-11-18 19:34:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:09,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:09,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:09,017 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:09,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:34:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:34:09,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:09,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:09,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880171221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:09,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:09,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:34:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718034657] [2022-11-18 19:34:09,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:34:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:34:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:34:09,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 19:34:09,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 375 transitions, 1516 flow. Second operand has 12 states, 12 states have (on average 286.5833333333333) internal successors, (3439), 12 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states 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 19:34:09,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:09,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 19:34:09,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:11,712 INFO L130 PetriNetUnfolder]: 1829/7089 cut-off events. [2022-11-18 19:34:11,712 INFO L131 PetriNetUnfolder]: For 2002/2062 co-relation queries the response was YES. [2022-11-18 19:34:11,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 7089 events. 1829/7089 cut-off events. For 2002/2062 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 70999 event pairs, 256 based on Foata normal form. 141/6583 useless extension candidates. Maximal degree in co-relation 14591. Up to 1045 conditions per place. [2022-11-18 19:34:11,798 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 78 selfloop transitions, 18 changer transitions 0/450 dead transitions. [2022-11-18 19:34:11,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 450 transitions, 1932 flow [2022-11-18 19:34:11,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:34:11,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:34:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5193 transitions. [2022-11-18 19:34:11,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8987538940809969 [2022-11-18 19:34:11,811 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5193 transitions. [2022-11-18 19:34:11,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5193 transitions. [2022-11-18 19:34:11,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:11,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5193 transitions. [2022-11-18 19:34:11,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 288.5) internal successors, (5193), 18 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states 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 19:34:11,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states 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 19:34:11,841 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states 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 19:34:11,842 INFO L175 Difference]: Start difference. First operand has 309 places, 375 transitions, 1516 flow. Second operand 18 states and 5193 transitions. [2022-11-18 19:34:11,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 450 transitions, 1932 flow [2022-11-18 19:34:11,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 450 transitions, 1912 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:34:11,860 INFO L231 Difference]: Finished difference. Result has 325 places, 387 transitions, 1602 flow [2022-11-18 19:34:11,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1602, PETRI_PLACES=325, PETRI_TRANSITIONS=387} [2022-11-18 19:34:11,862 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 56 predicate places. [2022-11-18 19:34:11,862 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 387 transitions, 1602 flow [2022-11-18 19:34:11,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 286.5833333333333) internal successors, (3439), 12 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states 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 19:34:11,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:11,864 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:11,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 19:34:12,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:12,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:12,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:12,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1628645169, now seen corresponding path program 1 times [2022-11-18 19:34:12,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:12,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801628649] [2022-11-18 19:34:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:12,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:12,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801628649] [2022-11-18 19:34:12,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801628649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233655173] [2022-11-18 19:34:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:12,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:12,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:12,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:12,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:34:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:34:12,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:12,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:12,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233655173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:12,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:12,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:34:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197879767] [2022-11-18 19:34:12,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:12,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:12,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:12,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:12,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:12,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 19:34:12,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 387 transitions, 1602 flow. Second operand has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states 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 19:34:12,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:12,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 19:34:12,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:14,738 INFO L130 PetriNetUnfolder]: 1714/7059 cut-off events. [2022-11-18 19:34:14,739 INFO L131 PetriNetUnfolder]: For 3616/3700 co-relation queries the response was YES. [2022-11-18 19:34:14,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15306 conditions, 7059 events. 1714/7059 cut-off events. For 3616/3700 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 70924 event pairs, 160 based on Foata normal form. 192/6622 useless extension candidates. Maximal degree in co-relation 15233. Up to 1924 conditions per place. [2022-11-18 19:34:14,827 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 36 selfloop transitions, 11 changer transitions 0/401 dead transitions. [2022-11-18 19:34:14,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 401 transitions, 1723 flow [2022-11-18 19:34:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:34:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2020 transitions. [2022-11-18 19:34:14,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8989764129951046 [2022-11-18 19:34:14,833 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2020 transitions. [2022-11-18 19:34:14,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2020 transitions. [2022-11-18 19:34:14,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:14,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2020 transitions. [2022-11-18 19:34:14,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.57142857142856) internal successors, (2020), 7 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states 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 19:34:14,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 19:34:14,845 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 19:34:14,845 INFO L175 Difference]: Start difference. First operand has 325 places, 387 transitions, 1602 flow. Second operand 7 states and 2020 transitions. [2022-11-18 19:34:14,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 401 transitions, 1723 flow [2022-11-18 19:34:14,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 401 transitions, 1691 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 19:34:14,873 INFO L231 Difference]: Finished difference. Result has 321 places, 383 transitions, 1565 flow [2022-11-18 19:34:14,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1565, PETRI_PLACES=321, PETRI_TRANSITIONS=383} [2022-11-18 19:34:14,875 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 52 predicate places. [2022-11-18 19:34:14,875 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 383 transitions, 1565 flow [2022-11-18 19:34:14,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states 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 19:34:14,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:14,877 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:14,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:15,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:15,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:15,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash 59019253, now seen corresponding path program 1 times [2022-11-18 19:34:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:15,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441440765] [2022-11-18 19:34:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:34:15,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:15,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441440765] [2022-11-18 19:34:15,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441440765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:15,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777089795] [2022-11-18 19:34:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:15,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:15,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:15,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:15,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:34:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:34:15,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:34:16,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:34:16,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777089795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:16,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:16,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-18 19:34:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570617087] [2022-11-18 19:34:16,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:16,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:34:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:16,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:34:16,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:34:16,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 321 [2022-11-18 19:34:16,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 383 transitions, 1565 flow. Second operand has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states 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 19:34:16,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:16,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 321 [2022-11-18 19:34:16,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:21,342 INFO L130 PetriNetUnfolder]: 1540/9972 cut-off events. [2022-11-18 19:34:21,342 INFO L131 PetriNetUnfolder]: For 3573/15892 co-relation queries the response was YES. [2022-11-18 19:34:21,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18575 conditions, 9972 events. 1540/9972 cut-off events. For 3573/15892 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 104933 event pairs, 335 based on Foata normal form. 279/9723 useless extension candidates. Maximal degree in co-relation 18437. Up to 596 conditions per place. [2022-11-18 19:34:21,469 INFO L137 encePairwiseOnDemand]: 279/321 looper letters, 382 selfloop transitions, 154 changer transitions 0/718 dead transitions. [2022-11-18 19:34:21,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 718 transitions, 3926 flow [2022-11-18 19:34:21,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 19:34:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 19:34:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7927 transitions. [2022-11-18 19:34:21,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6859640013845621 [2022-11-18 19:34:21,487 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7927 transitions. [2022-11-18 19:34:21,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7927 transitions. [2022-11-18 19:34:21,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:21,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7927 transitions. [2022-11-18 19:34:21,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 220.19444444444446) internal successors, (7927), 36 states have internal predecessors, (7927), 0 states have call successors, (0), 0 states 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 19:34:21,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states 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 19:34:21,535 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states 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 19:34:21,535 INFO L175 Difference]: Start difference. First operand has 321 places, 383 transitions, 1565 flow. Second operand 36 states and 7927 transitions. [2022-11-18 19:34:21,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 718 transitions, 3926 flow [2022-11-18 19:34:21,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 718 transitions, 3912 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:34:21,572 INFO L231 Difference]: Finished difference. Result has 360 places, 457 transitions, 2448 flow [2022-11-18 19:34:21,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2448, PETRI_PLACES=360, PETRI_TRANSITIONS=457} [2022-11-18 19:34:21,574 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 91 predicate places. [2022-11-18 19:34:21,574 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 457 transitions, 2448 flow [2022-11-18 19:34:21,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states 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 19:34:21,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:21,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:21,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:21,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:34:21,795 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1184057241, now seen corresponding path program 1 times [2022-11-18 19:34:21,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:21,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534813971] [2022-11-18 19:34:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:34:22,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:22,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534813971] [2022-11-18 19:34:22,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534813971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:22,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993174110] [2022-11-18 19:34:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:22,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:22,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:22,270 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:22,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:34:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:34:22,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:34:22,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:22,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993174110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:22,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:22,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-18 19:34:22,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024022923] [2022-11-18 19:34:22,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:22,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:22,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:34:22,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 321 [2022-11-18 19:34:22,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 457 transitions, 2448 flow. Second operand has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 19:34:22,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:22,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 321 [2022-11-18 19:34:22,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:26,401 INFO L130 PetriNetUnfolder]: 2743/11312 cut-off events. [2022-11-18 19:34:26,401 INFO L131 PetriNetUnfolder]: For 8085/18935 co-relation queries the response was YES. [2022-11-18 19:34:26,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22496 conditions, 11312 events. 2743/11312 cut-off events. For 8085/18935 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 126761 event pairs, 548 based on Foata normal form. 330/10259 useless extension candidates. Maximal degree in co-relation 22297. Up to 1884 conditions per place. [2022-11-18 19:34:26,601 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 57 selfloop transitions, 15 changer transitions 6/489 dead transitions. [2022-11-18 19:34:26,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 489 transitions, 2744 flow [2022-11-18 19:34:26,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:26,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:34:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1931 transitions. [2022-11-18 19:34:26,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8593680462839342 [2022-11-18 19:34:26,605 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1931 transitions. [2022-11-18 19:34:26,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1931 transitions. [2022-11-18 19:34:26,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:26,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1931 transitions. [2022-11-18 19:34:26,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.85714285714283) internal successors, (1931), 7 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states 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 19:34:26,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 19:34:26,617 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 19:34:26,617 INFO L175 Difference]: Start difference. First operand has 360 places, 457 transitions, 2448 flow. Second operand 7 states and 1931 transitions. [2022-11-18 19:34:26,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 489 transitions, 2744 flow [2022-11-18 19:34:26,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 489 transitions, 2646 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-18 19:34:26,661 INFO L231 Difference]: Finished difference. Result has 355 places, 453 transitions, 2367 flow [2022-11-18 19:34:26,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2367, PETRI_PLACES=355, PETRI_TRANSITIONS=453} [2022-11-18 19:34:26,662 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 86 predicate places. [2022-11-18 19:34:26,663 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 453 transitions, 2367 flow [2022-11-18 19:34:26,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 19:34:26,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:26,664 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:26,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:26,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:34:26,871 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1304005718, now seen corresponding path program 2 times [2022-11-18 19:34:26,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:26,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167502251] [2022-11-18 19:34:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:27,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:27,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167502251] [2022-11-18 19:34:27,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167502251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390661556] [2022-11-18 19:34:27,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:27,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:27,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:27,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:27,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:34:27,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:34:27,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:27,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:34:27,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 19:34:27,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 19:34:28,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390661556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:28,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:28,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-18 19:34:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852996022] [2022-11-18 19:34:28,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:28,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:28,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-18 19:34:28,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 453 transitions, 2367 flow. Second operand has 16 states, 16 states have (on average 280.5625) internal successors, (4489), 16 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states 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 19:34:28,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:28,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-18 19:34:28,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:35,969 INFO L130 PetriNetUnfolder]: 8177/24699 cut-off events. [2022-11-18 19:34:35,969 INFO L131 PetriNetUnfolder]: For 10467/10999 co-relation queries the response was YES. [2022-11-18 19:34:36,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50295 conditions, 24699 events. 8177/24699 cut-off events. For 10467/10999 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 282848 event pairs, 807 based on Foata normal form. 251/22530 useless extension candidates. Maximal degree in co-relation 45490. Up to 3654 conditions per place. [2022-11-18 19:34:36,310 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 105 selfloop transitions, 23 changer transitions 105/546 dead transitions. [2022-11-18 19:34:36,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 546 transitions, 2877 flow [2022-11-18 19:34:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:34:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 19:34:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6202 transitions. [2022-11-18 19:34:36,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782214670065137 [2022-11-18 19:34:36,324 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6202 transitions. [2022-11-18 19:34:36,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6202 transitions. [2022-11-18 19:34:36,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:36,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6202 transitions. [2022-11-18 19:34:36,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 281.90909090909093) internal successors, (6202), 22 states have internal predecessors, (6202), 0 states have call successors, (0), 0 states 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 19:34:36,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 321.0) internal successors, (7383), 23 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states 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 19:34:36,352 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 321.0) internal successors, (7383), 23 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states 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 19:34:36,352 INFO L175 Difference]: Start difference. First operand has 355 places, 453 transitions, 2367 flow. Second operand 22 states and 6202 transitions. [2022-11-18 19:34:36,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 546 transitions, 2877 flow [2022-11-18 19:34:36,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 546 transitions, 2839 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-18 19:34:36,453 INFO L231 Difference]: Finished difference. Result has 363 places, 352 transitions, 1578 flow [2022-11-18 19:34:36,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1578, PETRI_PLACES=363, PETRI_TRANSITIONS=352} [2022-11-18 19:34:36,455 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 94 predicate places. [2022-11-18 19:34:36,455 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 352 transitions, 1578 flow [2022-11-18 19:34:36,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 280.5625) internal successors, (4489), 16 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states 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 19:34:36,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:36,457 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:36,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:36,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:34:36,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:36,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1353052421, now seen corresponding path program 1 times [2022-11-18 19:34:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:36,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855749904] [2022-11-18 19:34:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:36,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 19:34:37,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:37,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855749904] [2022-11-18 19:34:37,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855749904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:37,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847328223] [2022-11-18 19:34:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:37,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:37,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:37,261 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:37,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:34:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:37,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:34:37,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 19:34:37,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:37,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847328223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:37,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:37,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:34:37,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343340576] [2022-11-18 19:34:37,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:37,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:37,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:37,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:37,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 19:34:37,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 352 transitions, 1578 flow. Second operand has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states 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 19:34:37,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:37,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 19:34:37,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:38,187 INFO L130 PetriNetUnfolder]: 351/2135 cut-off events. [2022-11-18 19:34:38,187 INFO L131 PetriNetUnfolder]: For 1200/1200 co-relation queries the response was YES. [2022-11-18 19:34:38,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 2135 events. 351/2135 cut-off events. For 1200/1200 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14068 event pairs, 0 based on Foata normal form. 30/2115 useless extension candidates. Maximal degree in co-relation 4049. Up to 325 conditions per place. [2022-11-18 19:34:38,221 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 33 selfloop transitions, 8 changer transitions 0/367 dead transitions. [2022-11-18 19:34:38,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 367 transitions, 1704 flow [2022-11-18 19:34:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:34:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2022-11-18 19:34:38,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8985313751668892 [2022-11-18 19:34:38,225 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2022-11-18 19:34:38,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2022-11-18 19:34:38,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:38,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2022-11-18 19:34:38,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states 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 19:34:38,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 19:34:38,233 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 19:34:38,233 INFO L175 Difference]: Start difference. First operand has 363 places, 352 transitions, 1578 flow. Second operand 7 states and 2019 transitions. [2022-11-18 19:34:38,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 367 transitions, 1704 flow [2022-11-18 19:34:38,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 367 transitions, 1401 flow, removed 15 selfloop flow, removed 29 redundant places. [2022-11-18 19:34:38,249 INFO L231 Difference]: Finished difference. Result has 309 places, 350 transitions, 1285 flow [2022-11-18 19:34:38,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1285, PETRI_PLACES=309, PETRI_TRANSITIONS=350} [2022-11-18 19:34:38,251 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 40 predicate places. [2022-11-18 19:34:38,251 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 350 transitions, 1285 flow [2022-11-18 19:34:38,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states 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 19:34:38,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:38,252 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:38,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-18 19:34:38,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:34:38,458 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 19:34:38,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash 485600300, now seen corresponding path program 2 times [2022-11-18 19:34:38,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:38,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670905987] [2022-11-18 19:34:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:34:39,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:39,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670905987] [2022-11-18 19:34:39,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670905987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:39,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614891] [2022-11-18 19:34:39,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:39,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:39,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:39,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:39,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:34:39,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:34:39,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:39,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:34:39,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 19:34:39,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 19:34:40,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614891] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:40,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:40,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-18 19:34:40,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796374356] [2022-11-18 19:34:40,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:40,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:34:40,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:40,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:34:40,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:34:40,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 321 [2022-11-18 19:34:40,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 350 transitions, 1285 flow. Second operand has 19 states, 19 states have (on average 215.47368421052633) internal successors, (4094), 19 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states 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 19:34:40,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:40,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 321 [2022-11-18 19:34:40,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:43,277 INFO L130 PetriNetUnfolder]: 1069/5928 cut-off events. [2022-11-18 19:34:43,278 INFO L131 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2022-11-18 19:34:43,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 5928 events. 1069/5928 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 52850 event pairs, 122 based on Foata normal form. 45/5623 useless extension candidates. Maximal degree in co-relation 9856. Up to 468 conditions per place. [2022-11-18 19:34:43,355 INFO L137 encePairwiseOnDemand]: 279/321 looper letters, 0 selfloop transitions, 0 changer transitions 602/602 dead transitions. [2022-11-18 19:34:43,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 602 transitions, 3153 flow [2022-11-18 19:34:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:34:43,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 19:34:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 8156 transitions. [2022-11-18 19:34:43,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6686342023282505 [2022-11-18 19:34:43,368 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 8156 transitions. [2022-11-18 19:34:43,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 8156 transitions. [2022-11-18 19:34:43,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:43,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 8156 transitions. [2022-11-18 19:34:43,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 214.6315789473684) internal successors, (8156), 38 states have internal predecessors, (8156), 0 states have call successors, (0), 0 states 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 19:34:43,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 321.0) internal successors, (12519), 39 states have internal predecessors, (12519), 0 states have call successors, (0), 0 states 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 19:34:43,398 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 321.0) internal successors, (12519), 39 states have internal predecessors, (12519), 0 states have call successors, (0), 0 states 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 19:34:43,399 INFO L175 Difference]: Start difference. First operand has 309 places, 350 transitions, 1285 flow. Second operand 38 states and 8156 transitions. [2022-11-18 19:34:43,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 602 transitions, 3153 flow [2022-11-18 19:34:43,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 602 transitions, 3127 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-18 19:34:43,418 INFO L231 Difference]: Finished difference. Result has 339 places, 0 transitions, 0 flow [2022-11-18 19:34:43,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=0, PETRI_PLACES=339, PETRI_TRANSITIONS=0} [2022-11-18 19:34:43,419 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 70 predicate places. [2022-11-18 19:34:43,420 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 0 transitions, 0 flow [2022-11-18 19:34:43,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 215.47368421052633) internal successors, (4094), 19 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states 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 19:34:43,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2022-11-18 19:34:43,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-18 19:34:43,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-18 19:34:43,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-18 19:34:43,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-18 19:34:43,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-18 19:34:43,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-18 19:34:43,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-18 19:34:43,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-18 19:34:43,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-18 19:34:43,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-18 19:34:43,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-18 19:34:43,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-18 19:34:43,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-18 19:34:43,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2022-11-18 19:34:43,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2022-11-18 19:34:43,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2022-11-18 19:34:43,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-18 19:34:43,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-18 19:34:43,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-18 19:34:43,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-18 19:34:43,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-18 19:34:43,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-18 19:34:43,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:43,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:34:43,648 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:43,654 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:34:43,654 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:34:43,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:34:43 BasicIcfg [2022-11-18 19:34:43,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:34:43,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:34:43,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:34:43,660 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:34:43,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:51" (3/4) ... [2022-11-18 19:34:43,663 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:34:43,669 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 19:34:43,670 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 19:34:43,670 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 19:34:43,678 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2022-11-18 19:34:43,678 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 19:34:43,679 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 19:34:43,679 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 19:34:43,737 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:34:43,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:34:43,738 INFO L158 Benchmark]: Toolchain (without parser) took 53184.45ms. Allocated memory was 138.4MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 98.3MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2022-11-18 19:34:43,738 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 138.4MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:34:43,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.87ms. Allocated memory is still 138.4MB. Free memory was 98.1MB in the beginning and 109.4MB in the end (delta: -11.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-18 19:34:43,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.43ms. Allocated memory is still 138.4MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:34:43,740 INFO L158 Benchmark]: Boogie Preprocessor took 43.45ms. Allocated memory is still 138.4MB. Free memory was 107.3MB in the beginning and 105.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:34:43,740 INFO L158 Benchmark]: RCFGBuilder took 956.54ms. Allocated memory is still 138.4MB. Free memory was 105.2MB in the beginning and 80.9MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-18 19:34:43,740 INFO L158 Benchmark]: TraceAbstraction took 51683.00ms. Allocated memory was 138.4MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 80.3MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2022-11-18 19:34:43,741 INFO L158 Benchmark]: Witness Printer took 77.66ms. Allocated memory is still 6.7GB. Free memory was 4.8GB in the beginning and 4.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 19:34:43,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 138.4MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.87ms. Allocated memory is still 138.4MB. Free memory was 98.1MB in the beginning and 109.4MB in the end (delta: -11.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.43ms. Allocated memory is still 138.4MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.45ms. Allocated memory is still 138.4MB. Free memory was 107.3MB in the beginning and 105.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 956.54ms. Allocated memory is still 138.4MB. Free memory was 105.2MB in the beginning and 80.9MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 51683.00ms. Allocated memory was 138.4MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 80.3MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 77.66ms. Allocated memory is still 6.7GB. Free memory was 4.8GB in the beginning and 4.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 351 locations, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 51.4s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 37.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5696 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5696 mSDsluCounter, 858 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 677 mSDsCounter, 492 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4776 IncrementalHoareTripleChecker+Invalid, 5268 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 492 mSolverCounterUnsat, 181 mSDtfsCounter, 4776 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2998 GetRequests, 2679 SyntacticMatches, 12 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2448occurred in iteration=12, InterpolantAutomatonStates: 232, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 4270 NumberOfCodeBlocks, 4108 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 5195 ConstructedInterpolants, 0 QuantifiedInterpolants, 10977 SizeOfPredicates, 46 NumberOfNonLiveVariables, 3686 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 541/926 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 19:34:43,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_441cfb02-f59a-4edf-b2cd-76eb0509f81e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE