./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --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_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/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_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/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_d285917b-ae57-408c-a763-b0a7c1c807f5/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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:06:16,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:06:16,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:06:16,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:06:16,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:06:16,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:06:16,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:06:16,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:06:16,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:06:16,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:06:16,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:06:16,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:06:16,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:06:16,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:06:16,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:06:16,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:06:16,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:06:16,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:06:16,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:06:16,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:06:16,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:06:16,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:06:16,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:06:16,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:06:16,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:06:16,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:06:16,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:06:16,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:06:16,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:06:16,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:06:16,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:06:16,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:06:16,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:06:16,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:06:16,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:06:16,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:06:16,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:06:16,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:06:16,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:06:16,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:06:16,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:06:16,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:06:16,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:06:16,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:06:16,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:06:16,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:06:16,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:06:16,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:06:16,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:06:16,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:06:16,693 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:06:16,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:06:16,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:06:16,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:06:16,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:06:16,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:06:16,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:06:16,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:06:16,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:06:16,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:06:16,706 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:06:16,706 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:06:16,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:06:16,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:06:16,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:06:16,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:06:16,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:06:16,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:06:16,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:16,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:06:16,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:06:16,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:06:16,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:06:16,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:06:16,711 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:06:16,711 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:06:16,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:06:16,711 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_d285917b-ae57-408c-a763-b0a7c1c807f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2022-11-18 20:06:17,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:06:17,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:06:17,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:06:17,092 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:06:17,093 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:06:17,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-18 20:06:17,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/data/c0d25e8a3/5715357c9b444c55a0fcfc3dfa8a92b9/FLAG825a310c0 [2022-11-18 20:06:18,069 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:06:18,070 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-18 20:06:18,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/data/c0d25e8a3/5715357c9b444c55a0fcfc3dfa8a92b9/FLAG825a310c0 [2022-11-18 20:06:18,232 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/data/c0d25e8a3/5715357c9b444c55a0fcfc3dfa8a92b9 [2022-11-18 20:06:18,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:06:18,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:06:18,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:18,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:06:18,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:06:18,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:18" (1/1) ... [2022-11-18 20:06:18,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4582d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:18, skipping insertion in model container [2022-11-18 20:06:18,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:18" (1/1) ... [2022-11-18 20:06:18,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:06:18,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:06:18,595 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_d285917b-ae57-408c-a763-b0a7c1c807f5/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-18 20:06:19,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:19,080 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:06:19,101 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_d285917b-ae57-408c-a763-b0a7c1c807f5/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-18 20:06:19,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:19,273 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:06:19,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19 WrapperNode [2022-11-18 20:06:19,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:19,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:19,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:06:19,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:06:19,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,358 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-11-18 20:06:19,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:19,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:06:19,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:06:19,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:06:19,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,386 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:06:19,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:06:19,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:06:19,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:06:19,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (1/1) ... [2022-11-18 20:06:19,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:19,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:19,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:06:19,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:06:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:06:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:06:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:06:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:06:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:06:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:06:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-11-18 20:06:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-11-18 20:06:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:06:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:06:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:06:19,529 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:06:19,733 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:06:19,735 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:06:20,021 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:06:20,040 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:06:20,043 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:06:20,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:20 BoogieIcfgContainer [2022-11-18 20:06:20,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:06:20,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:06:20,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:06:20,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:06:20,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:06:18" (1/3) ... [2022-11-18 20:06:20,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57311b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:20, skipping insertion in model container [2022-11-18 20:06:20,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:19" (2/3) ... [2022-11-18 20:06:20,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57311b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:20, skipping insertion in model container [2022-11-18 20:06:20,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:20" (3/3) ... [2022-11-18 20:06:20,064 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-11-18 20:06:20,077 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:06:20,093 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:06:20,093 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:06:20,093 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:06:20,248 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:06:20,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 107 transitions, 222 flow [2022-11-18 20:06:20,422 INFO L130 PetriNetUnfolder]: 7/106 cut-off events. [2022-11-18 20:06:20,422 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:06:20,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 106 events. 7/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-18 20:06:20,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 107 transitions, 222 flow [2022-11-18 20:06:20,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 85 transitions, 173 flow [2022-11-18 20:06:20,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:06:20,456 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;@77327220, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:06:20,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 20:06:20,474 INFO L130 PetriNetUnfolder]: 3/56 cut-off events. [2022-11-18 20:06:20,475 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:06:20,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:20,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:20,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1562824438, now seen corresponding path program 1 times [2022-11-18 20:06:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:20,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861353326] [2022-11-18 20:06:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:21,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:21,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861353326] [2022-11-18 20:06:21,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861353326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:21,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:21,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:21,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315693268] [2022-11-18 20:06:21,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:21,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:21,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:21,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 107 [2022-11-18 20:06:21,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:21,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 107 [2022-11-18 20:06:21,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:21,268 INFO L130 PetriNetUnfolder]: 26/195 cut-off events. [2022-11-18 20:06:21,269 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:06:21,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 195 events. 26/195 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 707 event pairs, 2 based on Foata normal form. 23/182 useless extension candidates. Maximal degree in co-relation 212. Up to 42 conditions per place. [2022-11-18 20:06:21,273 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 12 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2022-11-18 20:06:21,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 207 flow [2022-11-18 20:06:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:06:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2022-11-18 20:06:21,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8847352024922118 [2022-11-18 20:06:21,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2022-11-18 20:06:21,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2022-11-18 20:06:21,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:21,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2022-11-18 20:06:21,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,321 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 173 flow. Second operand 3 states and 284 transitions. [2022-11-18 20:06:21,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 207 flow [2022-11-18 20:06:21,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:21,333 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 187 flow [2022-11-18 20:06:21,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2022-11-18 20:06:21,341 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2022-11-18 20:06:21,342 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 187 flow [2022-11-18 20:06:21,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:21,344 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] [2022-11-18 20:06:21,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:06:21,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1789414897, now seen corresponding path program 1 times [2022-11-18 20:06:21,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:21,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065448394] [2022-11-18 20:06:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:21,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:21,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:21,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065448394] [2022-11-18 20:06:21,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065448394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:21,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:21,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:21,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731003135] [2022-11-18 20:06:21,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:21,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:21,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:21,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:21,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:21,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:21,659 INFO L130 PetriNetUnfolder]: 93/373 cut-off events. [2022-11-18 20:06:21,659 INFO L131 PetriNetUnfolder]: For 35/37 co-relation queries the response was YES. [2022-11-18 20:06:21,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 373 events. 93/373 cut-off events. For 35/37 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1820 event pairs, 24 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 586. Up to 123 conditions per place. [2022-11-18 20:06:21,664 INFO L137 encePairwiseOnDemand]: 100/107 looper letters, 29 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2022-11-18 20:06:21,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 102 transitions, 304 flow [2022-11-18 20:06:21,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:06:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2022-11-18 20:06:21,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8317757009345794 [2022-11-18 20:06:21,669 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2022-11-18 20:06:21,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2022-11-18 20:06:21,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:21,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2022-11-18 20:06:21,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,676 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,676 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 187 flow. Second operand 5 states and 445 transitions. [2022-11-18 20:06:21,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 102 transitions, 304 flow [2022-11-18 20:06:21,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 102 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:21,681 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 230 flow [2022-11-18 20:06:21,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2022-11-18 20:06:21,682 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2022-11-18 20:06:21,683 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 230 flow [2022-11-18 20:06:21,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:21,684 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] [2022-11-18 20:06:21,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:06:21,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:21,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:21,685 INFO L85 PathProgramCache]: Analyzing trace with hash -127708024, now seen corresponding path program 1 times [2022-11-18 20:06:21,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:21,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117271481] [2022-11-18 20:06:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:21,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:21,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117271481] [2022-11-18 20:06:21,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117271481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:21,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:21,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500036748] [2022-11-18 20:06:21,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:21,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-11-18 20:06:21,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:21,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-11-18 20:06:21,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:21,925 INFO L130 PetriNetUnfolder]: 16/250 cut-off events. [2022-11-18 20:06:21,925 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-18 20:06:21,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 250 events. 16/250 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 860 event pairs, 3 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 334. Up to 34 conditions per place. [2022-11-18 20:06:21,929 INFO L137 encePairwiseOnDemand]: 100/107 looper letters, 15 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2022-11-18 20:06:21,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 94 transitions, 280 flow [2022-11-18 20:06:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:06:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2022-11-18 20:06:21,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8355140186915888 [2022-11-18 20:06:21,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2022-11-18 20:06:21,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2022-11-18 20:06:21,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:21,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2022-11-18 20:06:21,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,939 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 230 flow. Second operand 5 states and 447 transitions. [2022-11-18 20:06:21,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 94 transitions, 280 flow [2022-11-18 20:06:21,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:21,944 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 258 flow [2022-11-18 20:06:21,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-11-18 20:06:21,946 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2022-11-18 20:06:21,946 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 258 flow [2022-11-18 20:06:21,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:21,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:21,947 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] [2022-11-18 20:06:21,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:06:21,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:21,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1920582998, now seen corresponding path program 1 times [2022-11-18 20:06:21,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:21,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764883573] [2022-11-18 20:06:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:21,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:22,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:22,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764883573] [2022-11-18 20:06:22,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764883573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:22,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:22,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:22,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701092879] [2022-11-18 20:06:22,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:22,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:22,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:22,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:22,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 107 [2022-11-18 20:06:22,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:22,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 107 [2022-11-18 20:06:22,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:22,190 INFO L130 PetriNetUnfolder]: 20/296 cut-off events. [2022-11-18 20:06:22,190 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-18 20:06:22,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 296 events. 20/296 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1221 event pairs, 8 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 461. Up to 53 conditions per place. [2022-11-18 20:06:22,197 INFO L137 encePairwiseOnDemand]: 100/107 looper letters, 14 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2022-11-18 20:06:22,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 306 flow [2022-11-18 20:06:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:06:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2022-11-18 20:06:22,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8429906542056075 [2022-11-18 20:06:22,200 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2022-11-18 20:06:22,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2022-11-18 20:06:22,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:22,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2022-11-18 20:06:22,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,211 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,211 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 258 flow. Second operand 5 states and 451 transitions. [2022-11-18 20:06:22,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 306 flow [2022-11-18 20:06:22,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:22,222 INFO L231 Difference]: Finished difference. Result has 104 places, 94 transitions, 288 flow [2022-11-18 20:06:22,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=104, PETRI_TRANSITIONS=94} [2022-11-18 20:06:22,226 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2022-11-18 20:06:22,226 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 94 transitions, 288 flow [2022-11-18 20:06:22,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:22,234 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] [2022-11-18 20:06:22,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:06:22,237 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:22,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:22,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1015947858, now seen corresponding path program 1 times [2022-11-18 20:06:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:22,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023211931] [2022-11-18 20:06:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:22,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:22,447 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 20:06:22,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:22,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023211931] [2022-11-18 20:06:22,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023211931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:22,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:22,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:22,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452344977] [2022-11-18 20:06:22,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:22,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:22,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:22,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:22,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:22,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 107 [2022-11-18 20:06:22,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 94 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:22,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 107 [2022-11-18 20:06:22,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:22,526 INFO L130 PetriNetUnfolder]: 8/215 cut-off events. [2022-11-18 20:06:22,526 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-18 20:06:22,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 215 events. 8/215 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 577 event pairs, 2 based on Foata normal form. 8/222 useless extension candidates. Maximal degree in co-relation 326. Up to 23 conditions per place. [2022-11-18 20:06:22,529 INFO L137 encePairwiseOnDemand]: 103/107 looper letters, 7 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2022-11-18 20:06:22,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 92 transitions, 298 flow [2022-11-18 20:06:22,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:06:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2022-11-18 20:06:22,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8535825545171339 [2022-11-18 20:06:22,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2022-11-18 20:06:22,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2022-11-18 20:06:22,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:22,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2022-11-18 20:06:22,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,536 INFO L175 Difference]: Start difference. First operand has 104 places, 94 transitions, 288 flow. Second operand 3 states and 274 transitions. [2022-11-18 20:06:22,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 92 transitions, 298 flow [2022-11-18 20:06:22,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 92 transitions, 292 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 20:06:22,541 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 278 flow [2022-11-18 20:06:22,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2022-11-18 20:06:22,543 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2022-11-18 20:06:22,543 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 278 flow [2022-11-18 20:06:22,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:22,544 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] [2022-11-18 20:06:22,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:06:22,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:22,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1840040812, now seen corresponding path program 1 times [2022-11-18 20:06:22,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:22,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906523795] [2022-11-18 20:06:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:22,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:22,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:22,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906523795] [2022-11-18 20:06:22,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906523795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:22,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:22,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:22,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240452430] [2022-11-18 20:06:22,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:22,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:22,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:22,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:22,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:22,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:22,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:22,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:22,949 INFO L130 PetriNetUnfolder]: 21/271 cut-off events. [2022-11-18 20:06:22,950 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-11-18 20:06:22,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 271 events. 21/271 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 904 event pairs, 4 based on Foata normal form. 3/272 useless extension candidates. Maximal degree in co-relation 482. Up to 57 conditions per place. [2022-11-18 20:06:22,953 INFO L137 encePairwiseOnDemand]: 98/107 looper letters, 25 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2022-11-18 20:06:22,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 108 transitions, 394 flow [2022-11-18 20:06:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:06:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:06:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2022-11-18 20:06:22,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.807743658210948 [2022-11-18 20:06:22,958 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2022-11-18 20:06:22,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2022-11-18 20:06:22,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:22,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2022-11-18 20:06:22,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,965 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 278 flow. Second operand 7 states and 605 transitions. [2022-11-18 20:06:22,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 108 transitions, 394 flow [2022-11-18 20:06:22,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:22,974 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 350 flow [2022-11-18 20:06:22,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=350, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2022-11-18 20:06:22,978 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 27 predicate places. [2022-11-18 20:06:22,978 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 350 flow [2022-11-18 20:06:22,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:22,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:22,979 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] [2022-11-18 20:06:22,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:06:22,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:22,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2060849875, now seen corresponding path program 1 times [2022-11-18 20:06:22,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:22,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329939050] [2022-11-18 20:06:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:22,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:23,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:23,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329939050] [2022-11-18 20:06:23,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329939050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:23,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:23,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:23,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444751555] [2022-11-18 20:06:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:23,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:23,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:23,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:23,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:23,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:23,363 INFO L130 PetriNetUnfolder]: 21/336 cut-off events. [2022-11-18 20:06:23,363 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2022-11-18 20:06:23,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 336 events. 21/336 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1335 event pairs, 5 based on Foata normal form. 10/344 useless extension candidates. Maximal degree in co-relation 647. Up to 36 conditions per place. [2022-11-18 20:06:23,368 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 37 selfloop transitions, 7 changer transitions 0/116 dead transitions. [2022-11-18 20:06:23,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 116 transitions, 502 flow [2022-11-18 20:06:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:06:23,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:06:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 529 transitions. [2022-11-18 20:06:23,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.82398753894081 [2022-11-18 20:06:23,371 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 529 transitions. [2022-11-18 20:06:23,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 529 transitions. [2022-11-18 20:06:23,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:23,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 529 transitions. [2022-11-18 20:06:23,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,376 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,376 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 350 flow. Second operand 6 states and 529 transitions. [2022-11-18 20:06:23,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 116 transitions, 502 flow [2022-11-18 20:06:23,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 116 transitions, 481 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 20:06:23,383 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 371 flow [2022-11-18 20:06:23,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2022-11-18 20:06:23,385 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2022-11-18 20:06:23,385 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 371 flow [2022-11-18 20:06:23,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:23,388 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 20:06:23,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:06:23,389 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash -241614925, now seen corresponding path program 1 times [2022-11-18 20:06:23,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:23,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371581713] [2022-11-18 20:06:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:23,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:23,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:23,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371581713] [2022-11-18 20:06:23,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371581713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:23,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:23,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:06:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257444029] [2022-11-18 20:06:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:23,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:06:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:06:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:06:23,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:23,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 371 flow. Second operand has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:23,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:23,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:23,779 INFO L130 PetriNetUnfolder]: 23/354 cut-off events. [2022-11-18 20:06:23,779 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-11-18 20:06:23,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 354 events. 23/354 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1501 event pairs, 3 based on Foata normal form. 2/354 useless extension candidates. Maximal degree in co-relation 715. Up to 71 conditions per place. [2022-11-18 20:06:23,783 INFO L137 encePairwiseOnDemand]: 98/107 looper letters, 35 selfloop transitions, 16 changer transitions 0/123 dead transitions. [2022-11-18 20:06:23,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 123 transitions, 581 flow [2022-11-18 20:06:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:06:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:06:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 696 transitions. [2022-11-18 20:06:23,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8130841121495327 [2022-11-18 20:06:23,786 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 696 transitions. [2022-11-18 20:06:23,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 696 transitions. [2022-11-18 20:06:23,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:23,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 696 transitions. [2022-11-18 20:06:23,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,791 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,791 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 371 flow. Second operand 8 states and 696 transitions. [2022-11-18 20:06:23,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 123 transitions, 581 flow [2022-11-18 20:06:23,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 123 transitions, 576 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:23,826 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 495 flow [2022-11-18 20:06:23,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=495, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2022-11-18 20:06:23,829 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 42 predicate places. [2022-11-18 20:06:23,829 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 495 flow [2022-11-18 20:06:23,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:23,830 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] [2022-11-18 20:06:23,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:06:23,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:23,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1927017332, now seen corresponding path program 1 times [2022-11-18 20:06:23,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:23,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304366316] [2022-11-18 20:06:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:23,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:23,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:23,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304366316] [2022-11-18 20:06:23,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304366316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:23,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:23,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:06:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573890523] [2022-11-18 20:06:23,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:23,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:06:23,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:23,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:06:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:06:23,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:23,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 495 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:23,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:23,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:23,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:24,135 INFO L130 PetriNetUnfolder]: 23/346 cut-off events. [2022-11-18 20:06:24,135 INFO L131 PetriNetUnfolder]: For 514/514 co-relation queries the response was YES. [2022-11-18 20:06:24,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 346 events. 23/346 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1420 event pairs, 3 based on Foata normal form. 8/352 useless extension candidates. Maximal degree in co-relation 726. Up to 72 conditions per place. [2022-11-18 20:06:24,139 INFO L137 encePairwiseOnDemand]: 100/107 looper letters, 31 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2022-11-18 20:06:24,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 110 transitions, 536 flow [2022-11-18 20:06:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:06:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:06:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 597 transitions. [2022-11-18 20:06:24,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7970627503337784 [2022-11-18 20:06:24,141 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 597 transitions. [2022-11-18 20:06:24,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 597 transitions. [2022-11-18 20:06:24,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:24,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 597 transitions. [2022-11-18 20:06:24,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,146 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,146 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 495 flow. Second operand 7 states and 597 transitions. [2022-11-18 20:06:24,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 110 transitions, 536 flow [2022-11-18 20:06:24,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 110 transitions, 503 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-11-18 20:06:24,153 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 411 flow [2022-11-18 20:06:24,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=123, PETRI_TRANSITIONS=101} [2022-11-18 20:06:24,154 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 39 predicate places. [2022-11-18 20:06:24,154 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 411 flow [2022-11-18 20:06:24,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:24,155 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] [2022-11-18 20:06:24,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:06:24,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1025038301, now seen corresponding path program 1 times [2022-11-18 20:06:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:24,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955832487] [2022-11-18 20:06:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:24,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:24,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:24,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955832487] [2022-11-18 20:06:24,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955832487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:24,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:24,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:24,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176349565] [2022-11-18 20:06:24,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:24,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:24,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:24,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:24,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:24,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-11-18 20:06:24,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 101 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:24,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-11-18 20:06:24,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:24,301 INFO L130 PetriNetUnfolder]: 13/296 cut-off events. [2022-11-18 20:06:24,301 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-18 20:06:24,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 296 events. 13/296 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1086 event pairs, 1 based on Foata normal form. 5/300 useless extension candidates. Maximal degree in co-relation 581. Up to 33 conditions per place. [2022-11-18 20:06:24,305 INFO L137 encePairwiseOnDemand]: 101/107 looper letters, 8 selfloop transitions, 8 changer transitions 0/101 dead transitions. [2022-11-18 20:06:24,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 101 transitions, 441 flow [2022-11-18 20:06:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:06:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2022-11-18 20:06:24,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8205607476635514 [2022-11-18 20:06:24,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2022-11-18 20:06:24,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2022-11-18 20:06:24,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:24,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2022-11-18 20:06:24,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,311 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,311 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 411 flow. Second operand 5 states and 439 transitions. [2022-11-18 20:06:24,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 101 transitions, 441 flow [2022-11-18 20:06:24,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 101 transitions, 429 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:06:24,317 INFO L231 Difference]: Finished difference. Result has 122 places, 101 transitions, 419 flow [2022-11-18 20:06:24,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=122, PETRI_TRANSITIONS=101} [2022-11-18 20:06:24,318 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2022-11-18 20:06:24,318 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 101 transitions, 419 flow [2022-11-18 20:06:24,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:24,319 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:06:24,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:06:24,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:24,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:24,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1711416077, now seen corresponding path program 1 times [2022-11-18 20:06:24,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:24,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80776256] [2022-11-18 20:06:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:24,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:24,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:24,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80776256] [2022-11-18 20:06:24,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80776256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:24,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404122319] [2022-11-18 20:06:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:24,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:24,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:24,422 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:24,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:06:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:24,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:06:24,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:24,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:24,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404122319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:24,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:06:24,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:06:24,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550433805] [2022-11-18 20:06:24,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:24,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:06:24,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:24,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:06:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:06:24,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-11-18 20:06:24,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 101 transitions, 419 flow. Second operand has 6 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:24,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-11-18 20:06:24,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:24,836 INFO L130 PetriNetUnfolder]: 13/291 cut-off events. [2022-11-18 20:06:24,836 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2022-11-18 20:06:24,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 291 events. 13/291 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1048 event pairs, 1 based on Foata normal form. 5/295 useless extension candidates. Maximal degree in co-relation 599. Up to 33 conditions per place. [2022-11-18 20:06:24,839 INFO L137 encePairwiseOnDemand]: 102/107 looper letters, 11 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2022-11-18 20:06:24,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 102 transitions, 453 flow [2022-11-18 20:06:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:06:24,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:06:24,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2022-11-18 20:06:24,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8184245660881175 [2022-11-18 20:06:24,842 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2022-11-18 20:06:24,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2022-11-18 20:06:24,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:24,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2022-11-18 20:06:24,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,846 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,847 INFO L175 Difference]: Start difference. First operand has 122 places, 101 transitions, 419 flow. Second operand 7 states and 613 transitions. [2022-11-18 20:06:24,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 102 transitions, 453 flow [2022-11-18 20:06:24,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 102 transitions, 441 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:06:24,852 INFO L231 Difference]: Finished difference. Result has 124 places, 100 transitions, 415 flow [2022-11-18 20:06:24,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=415, PETRI_PLACES=124, PETRI_TRANSITIONS=100} [2022-11-18 20:06:24,853 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-11-18 20:06:24,853 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 100 transitions, 415 flow [2022-11-18 20:06:24,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:24,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:24,854 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:06:24,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:06:25,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:25,064 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:25,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1532834848, now seen corresponding path program 1 times [2022-11-18 20:06:25,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:25,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332090267] [2022-11-18 20:06:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:25,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:25,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:25,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332090267] [2022-11-18 20:06:25,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332090267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:25,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:25,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:25,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798380620] [2022-11-18 20:06:25,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:25,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:25,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:25,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:25,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 107 [2022-11-18 20:06:25,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 100 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:25,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 107 [2022-11-18 20:06:25,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:25,208 INFO L130 PetriNetUnfolder]: 13/289 cut-off events. [2022-11-18 20:06:25,208 INFO L131 PetriNetUnfolder]: For 248/248 co-relation queries the response was YES. [2022-11-18 20:06:25,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 289 events. 13/289 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1035 event pairs, 1 based on Foata normal form. 2/290 useless extension candidates. Maximal degree in co-relation 569. Up to 33 conditions per place. [2022-11-18 20:06:25,212 INFO L137 encePairwiseOnDemand]: 101/107 looper letters, 7 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2022-11-18 20:06:25,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 100 transitions, 443 flow [2022-11-18 20:06:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:06:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2022-11-18 20:06:25,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8280373831775701 [2022-11-18 20:06:25,214 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2022-11-18 20:06:25,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2022-11-18 20:06:25,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:25,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2022-11-18 20:06:25,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,217 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,218 INFO L175 Difference]: Start difference. First operand has 124 places, 100 transitions, 415 flow. Second operand 5 states and 443 transitions. [2022-11-18 20:06:25,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 100 transitions, 443 flow [2022-11-18 20:06:25,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 100 transitions, 432 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:06:25,223 INFO L231 Difference]: Finished difference. Result has 123 places, 100 transitions, 424 flow [2022-11-18 20:06:25,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=123, PETRI_TRANSITIONS=100} [2022-11-18 20:06:25,224 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 39 predicate places. [2022-11-18 20:06:25,224 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 100 transitions, 424 flow [2022-11-18 20:06:25,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:25,225 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] [2022-11-18 20:06:25,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:06:25,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:25,226 INFO L85 PathProgramCache]: Analyzing trace with hash -71160679, now seen corresponding path program 1 times [2022-11-18 20:06:25,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:25,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503010375] [2022-11-18 20:06:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:25,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:25,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:25,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503010375] [2022-11-18 20:06:25,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503010375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:25,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146828925] [2022-11-18 20:06:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:25,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:25,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:25,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:25,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:06:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:06:25,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:25,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:25,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146828925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:25,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:25,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:06:25,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087911917] [2022-11-18 20:06:25,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:25,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:06:25,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:25,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:06:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:06:25,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:25,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 100 transitions, 424 flow. Second operand has 11 states, 11 states have (on average 83.54545454545455) internal successors, (919), 11 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:25,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:25,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:25,925 INFO L130 PetriNetUnfolder]: 39/539 cut-off events. [2022-11-18 20:06:25,925 INFO L131 PetriNetUnfolder]: For 568/568 co-relation queries the response was YES. [2022-11-18 20:06:25,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 539 events. 39/539 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2443 event pairs, 2 based on Foata normal form. 15/552 useless extension candidates. Maximal degree in co-relation 1187. Up to 57 conditions per place. [2022-11-18 20:06:25,930 INFO L137 encePairwiseOnDemand]: 98/107 looper letters, 46 selfloop transitions, 35 changer transitions 0/152 dead transitions. [2022-11-18 20:06:25,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 152 transitions, 817 flow [2022-11-18 20:06:25,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:06:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:06:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1540 transitions. [2022-11-18 20:06:25,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7995846313603323 [2022-11-18 20:06:25,935 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1540 transitions. [2022-11-18 20:06:25,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1540 transitions. [2022-11-18 20:06:25,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:25,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1540 transitions. [2022-11-18 20:06:25,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 85.55555555555556) internal successors, (1540), 18 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 107.0) internal successors, (2033), 19 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,944 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 107.0) internal successors, (2033), 19 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,945 INFO L175 Difference]: Start difference. First operand has 123 places, 100 transitions, 424 flow. Second operand 18 states and 1540 transitions. [2022-11-18 20:06:25,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 152 transitions, 817 flow [2022-11-18 20:06:25,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 152 transitions, 805 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:06:25,952 INFO L231 Difference]: Finished difference. Result has 147 places, 120 transitions, 710 flow [2022-11-18 20:06:25,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=710, PETRI_PLACES=147, PETRI_TRANSITIONS=120} [2022-11-18 20:06:25,953 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 63 predicate places. [2022-11-18 20:06:25,953 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 120 transitions, 710 flow [2022-11-18 20:06:25,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 83.54545454545455) internal successors, (919), 11 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:25,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:25,954 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:06:25,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:06:26,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:26,163 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:26,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -273239732, now seen corresponding path program 1 times [2022-11-18 20:06:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:26,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360771491] [2022-11-18 20:06:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:26,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:26,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:26,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360771491] [2022-11-18 20:06:26,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360771491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:26,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944260] [2022-11-18 20:06:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:26,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:26,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:26,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:26,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:06:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:26,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:06:26,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:26,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:26,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:26,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:06:26,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:06:26,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002410845] [2022-11-18 20:06:26,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:26,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:26,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:26,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:26,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:06:26,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 107 [2022-11-18 20:06:26,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 120 transitions, 710 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:26,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:26,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 107 [2022-11-18 20:06:26,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:26,582 INFO L130 PetriNetUnfolder]: 19/427 cut-off events. [2022-11-18 20:06:26,582 INFO L131 PetriNetUnfolder]: For 828/828 co-relation queries the response was YES. [2022-11-18 20:06:26,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 427 events. 19/427 cut-off events. For 828/828 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1748 event pairs, 0 based on Foata normal form. 5/431 useless extension candidates. Maximal degree in co-relation 1040. Up to 51 conditions per place. [2022-11-18 20:06:26,587 INFO L137 encePairwiseOnDemand]: 103/107 looper letters, 9 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2022-11-18 20:06:26,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 119 transitions, 734 flow [2022-11-18 20:06:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:06:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:06:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2022-11-18 20:06:26,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294392523364486 [2022-11-18 20:06:26,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2022-11-18 20:06:26,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2022-11-18 20:06:26,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:26,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2022-11-18 20:06:26,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:26,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:26,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:26,592 INFO L175 Difference]: Start difference. First operand has 147 places, 120 transitions, 710 flow. Second operand 4 states and 355 transitions. [2022-11-18 20:06:26,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 119 transitions, 734 flow [2022-11-18 20:06:26,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 119 transitions, 627 flow, removed 45 selfloop flow, removed 6 redundant places. [2022-11-18 20:06:26,603 INFO L231 Difference]: Finished difference. Result has 143 places, 119 transitions, 609 flow [2022-11-18 20:06:26,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=609, PETRI_PLACES=143, PETRI_TRANSITIONS=119} [2022-11-18 20:06:26,604 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 59 predicate places. [2022-11-18 20:06:26,604 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 119 transitions, 609 flow [2022-11-18 20:06:26,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:26,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:26,605 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:26,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:06:26,811 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:26,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1555734968, now seen corresponding path program 1 times [2022-11-18 20:06:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:26,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725190710] [2022-11-18 20:06:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:26,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:26,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:26,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725190710] [2022-11-18 20:06:26,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725190710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:26,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951522695] [2022-11-18 20:06:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:26,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:26,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:26,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:26,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:06:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:27,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:06:27,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:27,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:27,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951522695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:27,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:27,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-18 20:06:27,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691227171] [2022-11-18 20:06:27,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:27,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:06:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:06:27,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:06:27,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:27,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 119 transitions, 609 flow. Second operand has 14 states, 14 states have (on average 83.28571428571429) internal successors, (1166), 14 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:27,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:27,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:27,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:27,894 INFO L130 PetriNetUnfolder]: 63/979 cut-off events. [2022-11-18 20:06:27,894 INFO L131 PetriNetUnfolder]: For 2058/2058 co-relation queries the response was YES. [2022-11-18 20:06:27,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 979 events. 63/979 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6450 event pairs, 2 based on Foata normal form. 25/1002 useless extension candidates. Maximal degree in co-relation 2380. Up to 78 conditions per place. [2022-11-18 20:06:27,907 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 85 selfloop transitions, 72 changer transitions 0/227 dead transitions. [2022-11-18 20:06:27,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 227 transitions, 1657 flow [2022-11-18 20:06:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:06:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 20:06:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2315 transitions. [2022-11-18 20:06:27,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8013153340256144 [2022-11-18 20:06:27,916 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2315 transitions. [2022-11-18 20:06:27,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2315 transitions. [2022-11-18 20:06:27,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:27,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2315 transitions. [2022-11-18 20:06:27,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 85.74074074074075) internal successors, (2315), 27 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:27,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 107.0) internal successors, (2996), 28 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:27,937 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 107.0) internal successors, (2996), 28 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:27,937 INFO L175 Difference]: Start difference. First operand has 143 places, 119 transitions, 609 flow. Second operand 27 states and 2315 transitions. [2022-11-18 20:06:27,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 227 transitions, 1657 flow [2022-11-18 20:06:27,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 227 transitions, 1643 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-18 20:06:27,955 INFO L231 Difference]: Finished difference. Result has 180 places, 166 transitions, 1327 flow [2022-11-18 20:06:27,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1327, PETRI_PLACES=180, PETRI_TRANSITIONS=166} [2022-11-18 20:06:27,956 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 96 predicate places. [2022-11-18 20:06:27,956 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 166 transitions, 1327 flow [2022-11-18 20:06:27,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.28571428571429) internal successors, (1166), 14 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:27,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:27,957 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:06:27,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:28,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:06:28,164 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2071633328, now seen corresponding path program 1 times [2022-11-18 20:06:28,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:28,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129413090] [2022-11-18 20:06:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:28,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:28,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:28,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129413090] [2022-11-18 20:06:28,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129413090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:28,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691172056] [2022-11-18 20:06:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:28,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:28,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:28,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:28,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:06:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:28,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:06:28,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:28,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:28,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691172056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:28,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:28,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:06:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746419261] [2022-11-18 20:06:28,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:28,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:06:28,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:06:28,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:06:28,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:28,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 166 transitions, 1327 flow. Second operand has 19 states, 19 states have (on average 83.36842105263158) internal successors, (1584), 19 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:28,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:28,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:28,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:30,258 INFO L130 PetriNetUnfolder]: 131/2192 cut-off events. [2022-11-18 20:06:30,258 INFO L131 PetriNetUnfolder]: For 11831/11831 co-relation queries the response was YES. [2022-11-18 20:06:30,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6001 conditions, 2192 events. 131/2192 cut-off events. For 11831/11831 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 17082 event pairs, 2 based on Foata normal form. 79/2269 useless extension candidates. Maximal degree in co-relation 5916. Up to 179 conditions per place. [2022-11-18 20:06:30,290 INFO L137 encePairwiseOnDemand]: 98/107 looper letters, 145 selfloop transitions, 173 changer transitions 0/388 dead transitions. [2022-11-18 20:06:30,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 388 transitions, 4099 flow [2022-11-18 20:06:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-18 20:06:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-18 20:06:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4444 transitions. [2022-11-18 20:06:30,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.798705966930266 [2022-11-18 20:06:30,299 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4444 transitions. [2022-11-18 20:06:30,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4444 transitions. [2022-11-18 20:06:30,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:30,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4444 transitions. [2022-11-18 20:06:30,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 85.46153846153847) internal successors, (4444), 52 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:30,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 107.0) internal successors, (5671), 53 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:30,325 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 107.0) internal successors, (5671), 53 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:30,325 INFO L175 Difference]: Start difference. First operand has 180 places, 166 transitions, 1327 flow. Second operand 52 states and 4444 transitions. [2022-11-18 20:06:30,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 388 transitions, 4099 flow [2022-11-18 20:06:30,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 388 transitions, 3658 flow, removed 192 selfloop flow, removed 12 redundant places. [2022-11-18 20:06:30,385 INFO L231 Difference]: Finished difference. Result has 249 places, 272 transitions, 2891 flow [2022-11-18 20:06:30,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2891, PETRI_PLACES=249, PETRI_TRANSITIONS=272} [2022-11-18 20:06:30,386 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 165 predicate places. [2022-11-18 20:06:30,387 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 272 transitions, 2891 flow [2022-11-18 20:06:30,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 83.36842105263158) internal successors, (1584), 19 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:30,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:30,388 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:06:30,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:30,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:06:30,595 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:30,595 INFO L85 PathProgramCache]: Analyzing trace with hash -213080104, now seen corresponding path program 1 times [2022-11-18 20:06:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:30,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174936053] [2022-11-18 20:06:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:30,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:31,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:31,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174936053] [2022-11-18 20:06:31,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174936053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:31,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176155583] [2022-11-18 20:06:31,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:31,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:31,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:31,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:31,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:06:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:06:31,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:31,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:31,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176155583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:31,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:31,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-11-18 20:06:31,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136898421] [2022-11-18 20:06:31,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:31,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:06:31,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:31,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:06:31,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:06:31,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:31,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 272 transitions, 2891 flow. Second operand has 30 states, 30 states have (on average 83.13333333333334) internal successors, (2494), 30 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:31,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:31,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:31,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:37,623 INFO L130 PetriNetUnfolder]: 376/7020 cut-off events. [2022-11-18 20:06:37,624 INFO L131 PetriNetUnfolder]: For 145704/145704 co-relation queries the response was YES. [2022-11-18 20:06:37,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21024 conditions, 7020 events. 376/7020 cut-off events. For 145704/145704 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 71621 event pairs, 2 based on Foata normal form. 244/7262 useless extension candidates. Maximal degree in co-relation 20912. Up to 704 conditions per place. [2022-11-18 20:06:37,782 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 391 selfloop transitions, 525 changer transitions 0/986 dead transitions. [2022-11-18 20:06:37,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 986 transitions, 13799 flow [2022-11-18 20:06:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-11-18 20:06:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2022-11-18 20:06:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 10534 transitions. [2022-11-18 20:06:37,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8003951067548059 [2022-11-18 20:06:37,811 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 10534 transitions. [2022-11-18 20:06:37,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 10534 transitions. [2022-11-18 20:06:37,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:37,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 10534 transitions. [2022-11-18 20:06:37,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 85.64227642276423) internal successors, (10534), 123 states have internal predecessors, (10534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:37,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 107.0) internal successors, (13268), 124 states have internal predecessors, (13268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:37,958 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 107.0) internal successors, (13268), 124 states have internal predecessors, (13268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:37,958 INFO L175 Difference]: Start difference. First operand has 249 places, 272 transitions, 2891 flow. Second operand 123 states and 10534 transitions. [2022-11-18 20:06:37,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 986 transitions, 13799 flow [2022-11-18 20:06:38,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 986 transitions, 12979 flow, removed 400 selfloop flow, removed 8 redundant places. [2022-11-18 20:06:38,324 INFO L231 Difference]: Finished difference. Result has 440 places, 644 transitions, 9263 flow [2022-11-18 20:06:38,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2667, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=123, PETRI_FLOW=9263, PETRI_PLACES=440, PETRI_TRANSITIONS=644} [2022-11-18 20:06:38,325 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 356 predicate places. [2022-11-18 20:06:38,325 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 644 transitions, 9263 flow [2022-11-18 20:06:38,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 83.13333333333334) internal successors, (2494), 30 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:38,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:38,327 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 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] [2022-11-18 20:06:38,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:38,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:06:38,533 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1904569002, now seen corresponding path program 2 times [2022-11-18 20:06:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:38,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299245858] [2022-11-18 20:06:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:39,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:39,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299245858] [2022-11-18 20:06:39,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299245858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:39,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822904893] [2022-11-18 20:06:39,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:39,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:39,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:39,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:39,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:06:39,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:06:39,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:39,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:06:39,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:39,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:40,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822904893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:40,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:40,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-18 20:06:40,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637858668] [2022-11-18 20:06:40,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:40,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:06:40,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:40,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:06:40,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=757, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:06:40,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:40,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 644 transitions, 9263 flow. Second operand has 35 states, 35 states have (on average 83.65714285714286) internal successors, (2928), 35 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:40,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:51,332 INFO L130 PetriNetUnfolder]: 896/16599 cut-off events. [2022-11-18 20:06:51,332 INFO L131 PetriNetUnfolder]: For 1328251/1328251 co-relation queries the response was YES. [2022-11-18 20:06:51,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59576 conditions, 16599 events. 896/16599 cut-off events. For 1328251/1328251 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 192997 event pairs, 2 based on Foata normal form. 300/16897 useless extension candidates. Maximal degree in co-relation 59386. Up to 1546 conditions per place. [2022-11-18 20:06:51,903 INFO L137 encePairwiseOnDemand]: 98/107 looper letters, 600 selfloop transitions, 1536 changer transitions 0/2206 dead transitions. [2022-11-18 20:06:51,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 2206 transitions, 37194 flow [2022-11-18 20:06:51,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-11-18 20:06:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2022-11-18 20:06:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 10568 transitions. [2022-11-18 20:06:51,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7965028640337655 [2022-11-18 20:06:51,918 INFO L72 ComplementDD]: Start complementDD. Operand 124 states and 10568 transitions. [2022-11-18 20:06:51,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 10568 transitions. [2022-11-18 20:06:51,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:51,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 124 states and 10568 transitions. [2022-11-18 20:06:51,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 125 states, 124 states have (on average 85.2258064516129) internal successors, (10568), 124 states have internal predecessors, (10568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:51,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 125 states, 125 states have (on average 107.0) internal successors, (13375), 125 states have internal predecessors, (13375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:51,967 INFO L81 ComplementDD]: Finished complementDD. Result has 125 states, 125 states have (on average 107.0) internal successors, (13375), 125 states have internal predecessors, (13375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:51,967 INFO L175 Difference]: Start difference. First operand has 440 places, 644 transitions, 9263 flow. Second operand 124 states and 10568 transitions. [2022-11-18 20:06:51,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 2206 transitions, 37194 flow [2022-11-18 20:06:56,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 2206 transitions, 35048 flow, removed 1047 selfloop flow, removed 16 redundant places. [2022-11-18 20:06:56,545 INFO L231 Difference]: Finished difference. Result has 613 places, 1712 transitions, 29064 flow [2022-11-18 20:06:56,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=8567, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=124, PETRI_FLOW=29064, PETRI_PLACES=613, PETRI_TRANSITIONS=1712} [2022-11-18 20:06:56,546 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 529 predicate places. [2022-11-18 20:06:56,546 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 1712 transitions, 29064 flow [2022-11-18 20:06:56,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 83.65714285714286) internal successors, (2928), 35 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:56,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:56,547 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:06:56,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:56,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:06:56,753 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:06:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1025915708, now seen corresponding path program 2 times [2022-11-18 20:06:56,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:56,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218996714] [2022-11-18 20:06:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:56,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:57,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:57,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218996714] [2022-11-18 20:06:57,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218996714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:57,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563363892] [2022-11-18 20:06:57,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:57,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:57,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:57,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:57,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:06:57,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:06:57,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:57,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:06:57,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:57,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:58,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563363892] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:58,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:58,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-11-18 20:06:58,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166886457] [2022-11-18 20:06:58,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:58,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:06:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:06:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=1212, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:06:58,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:06:58,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 1712 transitions, 29064 flow. Second operand has 42 states, 42 states have (on average 83.38095238095238) internal successors, (3502), 42 states have internal predecessors, (3502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:58,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:58,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:06:58,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:38,370 INFO L130 PetriNetUnfolder]: 2360/43852 cut-off events. [2022-11-18 20:07:38,370 INFO L131 PetriNetUnfolder]: For 9036932/9036932 co-relation queries the response was YES. [2022-11-18 20:07:40,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169733 conditions, 43852 events. 2360/43852 cut-off events. For 9036932/9036932 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 615466 event pairs, 2 based on Foata normal form. 1048/44898 useless extension candidates. Maximal degree in co-relation 169476. Up to 4400 conditions per place. [2022-11-18 20:07:40,506 INFO L137 encePairwiseOnDemand]: 98/107 looper letters, 1656 selfloop transitions, 4562 changer transitions 0/6288 dead transitions. [2022-11-18 20:07:40,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 6288 transitions, 126839 flow [2022-11-18 20:07:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2022-11-18 20:07:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2022-11-18 20:07:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 18511 transitions. [2022-11-18 20:07:40,528 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7972350230414746 [2022-11-18 20:07:40,528 INFO L72 ComplementDD]: Start complementDD. Operand 217 states and 18511 transitions. [2022-11-18 20:07:40,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 18511 transitions. [2022-11-18 20:07:40,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:40,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 217 states and 18511 transitions. [2022-11-18 20:07:40,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 218 states, 217 states have (on average 85.3041474654378) internal successors, (18511), 217 states have internal predecessors, (18511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:40,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 218 states, 218 states have (on average 107.0) internal successors, (23326), 218 states have internal predecessors, (23326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:40,604 INFO L81 ComplementDD]: Finished complementDD. Result has 218 states, 218 states have (on average 107.0) internal successors, (23326), 218 states have internal predecessors, (23326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:40,605 INFO L175 Difference]: Start difference. First operand has 613 places, 1712 transitions, 29064 flow. Second operand 217 states and 18511 transitions. [2022-11-18 20:07:40,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 829 places, 6288 transitions, 126839 flow [2022-11-18 20:08:05,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 6288 transitions, 125205 flow, removed 786 selfloop flow, removed 22 redundant places. [2022-11-18 20:08:05,127 INFO L231 Difference]: Finished difference. Result has 915 places, 4775 transitions, 97608 flow [2022-11-18 20:08:05,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=28132, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1512, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=217, PETRI_FLOW=97608, PETRI_PLACES=915, PETRI_TRANSITIONS=4775} [2022-11-18 20:08:05,130 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 831 predicate places. [2022-11-18 20:08:05,130 INFO L495 AbstractCegarLoop]: Abstraction has has 915 places, 4775 transitions, 97608 flow [2022-11-18 20:08:05,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 83.38095238095238) internal successors, (3502), 42 states have internal predecessors, (3502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:05,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:05,131 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:05,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:05,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:05,345 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:08:05,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1397355232, now seen corresponding path program 3 times [2022-11-18 20:08:05,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:05,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135707739] [2022-11-18 20:08:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:05,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:06,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:06,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135707739] [2022-11-18 20:08:06,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135707739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:06,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267667842] [2022-11-18 20:08:06,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:08:06,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:06,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:06,144 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:06,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d285917b-ae57-408c-a763-b0a7c1c807f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:08:06,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 20:08:06,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:06,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:08:06,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:06,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:07,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267667842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:07,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:08:07,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-11-18 20:08:07,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197795829] [2022-11-18 20:08:07,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:07,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:08:07,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:07,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:08:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=1869, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 20:08:07,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 107 [2022-11-18 20:08:07,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 4775 transitions, 97608 flow. Second operand has 51 states, 51 states have (on average 83.13725490196079) internal successors, (4240), 51 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:07,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:07,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 107 [2022-11-18 20:08:07,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand