./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8 --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- 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-e04fb08 [2022-11-16 11:26:43,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:26:43,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:26:43,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:26:43,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:26:43,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:26:43,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:26:43,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:26:43,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:26:43,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:26:43,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:26:43,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:26:43,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:26:43,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:26:43,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:26:43,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:26:43,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:26:43,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:26:43,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:26:43,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:26:43,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:26:43,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:26:43,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:26:43,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:26:43,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:26:43,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:26:43,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:26:43,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:26:43,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:26:43,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:26:43,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:26:43,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:26:43,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:26:43,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:26:43,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:26:43,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:26:43,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:26:43,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:26:43,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:26:43,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:26:43,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:26:43,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:26:43,477 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:26:43,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:26:43,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:26:43,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:26:43,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:26:43,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:26:43,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:26:43,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:26:43,481 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:26:43,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:26:43,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:26:43,482 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:26:43,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:26:43,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:26:43,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:26:43,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:26:43,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:26:43,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:26:43,485 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:26:43,485 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:26:43,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:26:43,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:26:43,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:26:43,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:26:43,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:26:43,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:26:43,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:26:43,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:26:43,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:26:43,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:26:43,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:26:43,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:26:43,491 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:26:43,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:26:43,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:26:43,492 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_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-11-16 11:26:43,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:26:43,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:26:43,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:26:43,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:26:43,846 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:26:43,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-16 11:26:43,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/data/8f29fd34b/899bfd0dfe3a442299894be2b71c5998/FLAG9a9172667 [2022-11-16 11:26:44,379 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:26:44,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-16 11:26:44,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/data/8f29fd34b/899bfd0dfe3a442299894be2b71c5998/FLAG9a9172667 [2022-11-16 11:26:44,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/data/8f29fd34b/899bfd0dfe3a442299894be2b71c5998 [2022-11-16 11:26:44,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:26:44,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:26:44,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:44,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:26:44,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:26:44,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:44" (1/1) ... [2022-11-16 11:26:44,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4040c459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:44, skipping insertion in model container [2022-11-16 11:26:44,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:44" (1/1) ... [2022-11-16 11:26:44,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:26:44,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:26:45,058 WARN L229 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_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-16 11:26:45,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:45,075 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:26:45,108 WARN L229 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_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-16 11:26:45,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:45,127 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:26:45,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45 WrapperNode [2022-11-16 11:26:45,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:45,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:26:45,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:26:45,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:26:45,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,182 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 347 [2022-11-16 11:26:45,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:26:45,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:26:45,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:26:45,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:26:45,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:26:45,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:26:45,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:26:45,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:26:45,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (1/1) ... [2022-11-16 11:26:45,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:26:45,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:45,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:26:45,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:26:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:26:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:26:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:26:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:26:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:26:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:26:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:26:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:26:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:26:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:26:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:26:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:26:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:26:45,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:26:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:26:45,330 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:26:45,481 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:26:45,483 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:26:46,134 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:26:46,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:26:46,152 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:26:46,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:46 BoogieIcfgContainer [2022-11-16 11:26:46,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:26:46,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:26:46,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:26:46,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:26:46,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:26:44" (1/3) ... [2022-11-16 11:26:46,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed37c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:26:46, skipping insertion in model container [2022-11-16 11:26:46,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:45" (2/3) ... [2022-11-16 11:26:46,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed37c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:26:46, skipping insertion in model container [2022-11-16 11:26:46,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:46" (3/3) ... [2022-11-16 11:26:46,168 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-11-16 11:26:46,178 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:26:46,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:26:46,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-16 11:26:46,188 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:26:46,426 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:26:46,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 456 transitions, 936 flow [2022-11-16 11:26:46,748 INFO L130 PetriNetUnfolder]: 32/453 cut-off events. [2022-11-16 11:26:46,748 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:26:46,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 453 events. 32/453 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1308 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-11-16 11:26:46,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 456 transitions, 936 flow [2022-11-16 11:26:46,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 432 transitions, 879 flow [2022-11-16 11:26:46,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:26:46,820 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;@2fbede73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:26:46,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-16 11:26:46,852 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-16 11:26:46,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:26:46,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:46,853 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:46,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:26:46,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1259387843, now seen corresponding path program 1 times [2022-11-16 11:26:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:46,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533572539] [2022-11-16 11:26:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:46,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:47,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:47,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533572539] [2022-11-16 11:26:47,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533572539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:47,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:47,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:47,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871054035] [2022-11-16 11:26:47,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:47,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:47,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:47,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:47,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:47,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-16 11:26:47,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 432 transitions, 879 flow. Second operand has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:47,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:47,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-16 11:26:47,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:47,844 INFO L130 PetriNetUnfolder]: 25/727 cut-off events. [2022-11-16 11:26:47,845 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-16 11:26:47,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 727 events. 25/727 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3628 event pairs, 0 based on Foata normal form. 66/691 useless extension candidates. Maximal degree in co-relation 557. Up to 18 conditions per place. [2022-11-16 11:26:47,861 INFO L137 encePairwiseOnDemand]: 432/456 looper letters, 26 selfloop transitions, 4 changer transitions 2/427 dead transitions. [2022-11-16 11:26:47,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 427 transitions, 944 flow [2022-11-16 11:26:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:26:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2156 transitions. [2022-11-16 11:26:47,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456140350877194 [2022-11-16 11:26:47,896 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2156 transitions. [2022-11-16 11:26:47,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2156 transitions. [2022-11-16 11:26:47,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:47,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2156 transitions. [2022-11-16 11:26:47,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.2) internal successors, (2156), 5 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:47,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:47,933 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:47,936 INFO L175 Difference]: Start difference. First operand has 411 places, 432 transitions, 879 flow. Second operand 5 states and 2156 transitions. [2022-11-16 11:26:47,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 427 transitions, 944 flow [2022-11-16 11:26:47,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 427 transitions, 926 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:26:47,961 INFO L231 Difference]: Finished difference. Result has 413 places, 415 transitions, 860 flow [2022-11-16 11:26:47,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=860, PETRI_PLACES=413, PETRI_TRANSITIONS=415} [2022-11-16 11:26:47,970 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 2 predicate places. [2022-11-16 11:26:47,970 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 415 transitions, 860 flow [2022-11-16 11:26:47,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:47,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:47,973 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:47,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:26:47,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:26:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:47,975 INFO L85 PathProgramCache]: Analyzing trace with hash -846474772, now seen corresponding path program 1 times [2022-11-16 11:26:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198933809] [2022-11-16 11:26:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:47,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:48,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:48,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198933809] [2022-11-16 11:26:48,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198933809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:48,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354004485] [2022-11-16 11:26:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:48,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:48,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:48,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:26:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:48,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:26:48,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:48,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:48,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354004485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:48,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:26:48,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:26:48,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234137841] [2022-11-16 11:26:48,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:48,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:26:48,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:48,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:26:48,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:26:48,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-16 11:26:48,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 415 transitions, 860 flow. Second operand has 12 states, 12 states have (on average 420.6666666666667) internal successors, (5048), 12 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:48,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:48,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-16 11:26:48,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:49,511 INFO L130 PetriNetUnfolder]: 61/1666 cut-off events. [2022-11-16 11:26:49,511 INFO L131 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-11-16 11:26:49,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1666 events. 61/1666 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11962 event pairs, 0 based on Foata normal form. 3/1424 useless extension candidates. Maximal degree in co-relation 1344. Up to 13 conditions per place. [2022-11-16 11:26:49,541 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 53 selfloop transitions, 18 changer transitions 0/466 dead transitions. [2022-11-16 11:26:49,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 466 transitions, 1150 flow [2022-11-16 11:26:49,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:26:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:26:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7598 transitions. [2022-11-16 11:26:49,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.925682261208577 [2022-11-16 11:26:49,557 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7598 transitions. [2022-11-16 11:26:49,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7598 transitions. [2022-11-16 11:26:49,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:49,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7598 transitions. [2022-11-16 11:26:49,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 422.1111111111111) internal successors, (7598), 18 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:49,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 456.0) internal successors, (8664), 19 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:49,601 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 456.0) internal successors, (8664), 19 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:49,602 INFO L175 Difference]: Start difference. First operand has 413 places, 415 transitions, 860 flow. Second operand 18 states and 7598 transitions. [2022-11-16 11:26:49,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 466 transitions, 1150 flow [2022-11-16 11:26:49,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 466 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:26:49,613 INFO L231 Difference]: Finished difference. Result has 431 places, 427 transitions, 964 flow [2022-11-16 11:26:49,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=964, PETRI_PLACES=431, PETRI_TRANSITIONS=427} [2022-11-16 11:26:49,615 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 20 predicate places. [2022-11-16 11:26:49,615 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 427 transitions, 964 flow [2022-11-16 11:26:49,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 420.6666666666667) internal successors, (5048), 12 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:49,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:49,620 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:49,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:26:49,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:49,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:26:49,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:49,826 INFO L85 PathProgramCache]: Analyzing trace with hash -470913155, now seen corresponding path program 1 times [2022-11-16 11:26:49,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:49,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911839266] [2022-11-16 11:26:49,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:49,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:50,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:50,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911839266] [2022-11-16 11:26:50,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911839266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:50,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680917609] [2022-11-16 11:26:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:50,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:50,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:50,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:50,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:26:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:50,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:26:50,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:50,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:50,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680917609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:50,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:26:50,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:26:50,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626357009] [2022-11-16 11:26:50,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:50,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:26:50,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:50,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:26:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:26:50,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-16 11:26:50,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 427 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 420.3333333333333) internal successors, (2522), 6 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:50,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:50,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-16 11:26:50,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:51,026 INFO L130 PetriNetUnfolder]: 61/1662 cut-off events. [2022-11-16 11:26:51,027 INFO L131 PetriNetUnfolder]: For 57/67 co-relation queries the response was YES. [2022-11-16 11:26:51,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1662 events. 61/1662 cut-off events. For 57/67 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11945 event pairs, 0 based on Foata normal form. 4/1421 useless extension candidates. Maximal degree in co-relation 1437. Up to 36 conditions per place. [2022-11-16 11:26:51,059 INFO L137 encePairwiseOnDemand]: 451/456 looper letters, 27 selfloop transitions, 11 changer transitions 0/433 dead transitions. [2022-11-16 11:26:51,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 433 transitions, 1041 flow [2022-11-16 11:26:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:26:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:26:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2956 transitions. [2022-11-16 11:26:51,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9260651629072681 [2022-11-16 11:26:51,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2956 transitions. [2022-11-16 11:26:51,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2956 transitions. [2022-11-16 11:26:51,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:51,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2956 transitions. [2022-11-16 11:26:51,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 422.2857142857143) internal successors, (2956), 7 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:51,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:51,083 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:51,083 INFO L175 Difference]: Start difference. First operand has 431 places, 427 transitions, 964 flow. Second operand 7 states and 2956 transitions. [2022-11-16 11:26:51,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 433 transitions, 1041 flow [2022-11-16 11:26:51,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 1009 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:26:51,096 INFO L231 Difference]: Finished difference. Result has 427 places, 423 transitions, 927 flow [2022-11-16 11:26:51,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=927, PETRI_PLACES=427, PETRI_TRANSITIONS=423} [2022-11-16 11:26:51,099 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 16 predicate places. [2022-11-16 11:26:51,099 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 423 transitions, 927 flow [2022-11-16 11:26:51,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 420.3333333333333) internal successors, (2522), 6 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:51,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:51,101 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:51,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:51,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:51,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:26:51,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1297888659, now seen corresponding path program 1 times [2022-11-16 11:26:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:51,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649642325] [2022-11-16 11:26:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:51,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:51,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:51,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649642325] [2022-11-16 11:26:51,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649642325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:51,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:51,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:51,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638653096] [2022-11-16 11:26:51,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:51,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:51,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:51,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:51,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:51,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-16 11:26:51,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 423 transitions, 927 flow. Second operand has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:51,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:51,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-16 11:26:51,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:54,503 INFO L130 PetriNetUnfolder]: 541/9022 cut-off events. [2022-11-16 11:26:54,503 INFO L131 PetriNetUnfolder]: For 42/47 co-relation queries the response was YES. [2022-11-16 11:26:54,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9863 conditions, 9022 events. 541/9022 cut-off events. For 42/47 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 105680 event pairs, 75 based on Foata normal form. 0/7557 useless extension candidates. Maximal degree in co-relation 7891. Up to 292 conditions per place. [2022-11-16 11:26:54,706 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 28 selfloop transitions, 6 changer transitions 0/439 dead transitions. [2022-11-16 11:26:54,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 439 transitions, 1038 flow [2022-11-16 11:26:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:26:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2121 transitions. [2022-11-16 11:26:54,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302631578947368 [2022-11-16 11:26:54,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2121 transitions. [2022-11-16 11:26:54,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2121 transitions. [2022-11-16 11:26:54,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:54,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2121 transitions. [2022-11-16 11:26:54,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 424.2) internal successors, (2121), 5 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:54,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:54,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:54,739 INFO L175 Difference]: Start difference. First operand has 427 places, 423 transitions, 927 flow. Second operand 5 states and 2121 transitions. [2022-11-16 11:26:54,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 439 transitions, 1038 flow [2022-11-16 11:26:54,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 439 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:26:54,759 INFO L231 Difference]: Finished difference. Result has 429 places, 426 transitions, 949 flow [2022-11-16 11:26:54,760 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=949, PETRI_PLACES=429, PETRI_TRANSITIONS=426} [2022-11-16 11:26:54,761 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 18 predicate places. [2022-11-16 11:26:54,762 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 426 transitions, 949 flow [2022-11-16 11:26:54,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:54,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:54,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:54,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:26:54,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:26:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:54,765 INFO L85 PathProgramCache]: Analyzing trace with hash -103367591, now seen corresponding path program 1 times [2022-11-16 11:26:54,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:54,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976459334] [2022-11-16 11:26:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:54,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:54,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:54,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976459334] [2022-11-16 11:26:54,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976459334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:54,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:54,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:26:54,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236658027] [2022-11-16 11:26:54,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:54,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:26:54,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:54,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:26:54,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:26:54,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-16 11:26:54,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 426 transitions, 949 flow. Second operand has 5 states, 5 states have (on average 419.8) internal successors, (2099), 5 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:54,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:54,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-16 11:26:54,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:55,773 INFO L130 PetriNetUnfolder]: 61/1722 cut-off events. [2022-11-16 11:26:55,774 INFO L131 PetriNetUnfolder]: For 65/81 co-relation queries the response was YES. [2022-11-16 11:26:55,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 1722 events. 61/1722 cut-off events. For 65/81 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 12833 event pairs, 0 based on Foata normal form. 0/1478 useless extension candidates. Maximal degree in co-relation 1752. Up to 53 conditions per place. [2022-11-16 11:26:55,823 INFO L137 encePairwiseOnDemand]: 451/456 looper letters, 23 selfloop transitions, 4 changer transitions 0/428 dead transitions. [2022-11-16 11:26:55,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 428 transitions, 1007 flow [2022-11-16 11:26:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:55,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:26:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2112 transitions. [2022-11-16 11:26:55,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9263157894736842 [2022-11-16 11:26:55,832 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2112 transitions. [2022-11-16 11:26:55,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2112 transitions. [2022-11-16 11:26:55,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:55,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2112 transitions. [2022-11-16 11:26:55,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 422.4) internal successors, (2112), 5 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:55,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:55,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:55,949 INFO L175 Difference]: Start difference. First operand has 429 places, 426 transitions, 949 flow. Second operand 5 states and 2112 transitions. [2022-11-16 11:26:55,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 428 transitions, 1007 flow [2022-11-16 11:26:55,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 428 transitions, 1003 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:26:55,958 INFO L231 Difference]: Finished difference. Result has 433 places, 426 transitions, 957 flow [2022-11-16 11:26:55,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=957, PETRI_PLACES=433, PETRI_TRANSITIONS=426} [2022-11-16 11:26:55,961 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 22 predicate places. [2022-11-16 11:26:55,962 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 426 transitions, 957 flow [2022-11-16 11:26:55,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 419.8) internal successors, (2099), 5 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:55,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:55,963 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:55,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:26:55,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:26:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash 771621186, now seen corresponding path program 1 times [2022-11-16 11:26:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:55,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240337713] [2022-11-16 11:26:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:56,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:56,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240337713] [2022-11-16 11:26:56,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240337713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:56,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732238127] [2022-11-16 11:26:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:56,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:56,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:56,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:56,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:26:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:56,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:26:56,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:56,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:56,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732238127] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:56,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:26:56,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-16 11:26:56,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628542415] [2022-11-16 11:26:56,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:56,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:26:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:26:56,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:26:56,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 456 [2022-11-16 11:26:56,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 426 transitions, 957 flow. Second operand has 14 states, 14 states have (on average 415.85714285714283) internal successors, (5822), 14 states have internal predecessors, (5822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:56,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:56,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 456 [2022-11-16 11:26:56,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:57,147 INFO L130 PetriNetUnfolder]: 31/932 cut-off events. [2022-11-16 11:26:57,148 INFO L131 PetriNetUnfolder]: For 50/58 co-relation queries the response was YES. [2022-11-16 11:26:57,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 932 events. 31/932 cut-off events. For 50/58 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5155 event pairs, 0 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 932. Up to 25 conditions per place. [2022-11-16 11:26:57,169 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 29 selfloop transitions, 13 changer transitions 0/435 dead transitions. [2022-11-16 11:26:57,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 435 transitions, 1063 flow [2022-11-16 11:26:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:26:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:26:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4581 transitions. [2022-11-16 11:26:57,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9132775119617225 [2022-11-16 11:26:57,180 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4581 transitions. [2022-11-16 11:26:57,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4581 transitions. [2022-11-16 11:26:57,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:57,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4581 transitions. [2022-11-16 11:26:57,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 416.45454545454544) internal successors, (4581), 11 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:57,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 456.0) internal successors, (5472), 12 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:57,209 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 456.0) internal successors, (5472), 12 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:57,209 INFO L175 Difference]: Start difference. First operand has 433 places, 426 transitions, 957 flow. Second operand 11 states and 4581 transitions. [2022-11-16 11:26:57,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 435 transitions, 1063 flow [2022-11-16 11:26:57,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 435 transitions, 1055 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:26:57,220 INFO L231 Difference]: Finished difference. Result has 442 places, 427 transitions, 996 flow [2022-11-16 11:26:57,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=996, PETRI_PLACES=442, PETRI_TRANSITIONS=427} [2022-11-16 11:26:57,222 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 31 predicate places. [2022-11-16 11:26:57,222 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 427 transitions, 996 flow [2022-11-16 11:26:57,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 415.85714285714283) internal successors, (5822), 14 states have internal predecessors, (5822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:57,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:57,226 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:57,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:57,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:57,432 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:26:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash 874065923, now seen corresponding path program 2 times [2022-11-16 11:26:57,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:57,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883847522] [2022-11-16 11:26:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:57,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:26:57,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:57,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883847522] [2022-11-16 11:26:57,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883847522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:57,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405127348] [2022-11-16 11:26:57,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:26:57,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:57,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:57,766 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:57,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:26:57,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:26:57,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:26:57,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:26:58,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:26:58,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405127348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:58,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:26:58,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-16 11:26:58,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579960053] [2022-11-16 11:26:58,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:58,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:26:58,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:58,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:26:58,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:26:58,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 456 [2022-11-16 11:26:58,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 427 transitions, 996 flow. Second operand has 17 states, 17 states have (on average 416.94117647058823) internal successors, (7088), 17 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:58,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:58,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 456 [2022-11-16 11:26:58,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:58,874 INFO L130 PetriNetUnfolder]: 15/519 cut-off events. [2022-11-16 11:26:58,874 INFO L131 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2022-11-16 11:26:58,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 519 events. 15/519 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1859 event pairs, 0 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 612. Up to 9 conditions per place. [2022-11-16 11:26:58,884 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 21 selfloop transitions, 13 changer transitions 0/427 dead transitions. [2022-11-16 11:26:58,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 427 transitions, 1033 flow [2022-11-16 11:26:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:26:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:26:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6230 transitions. [2022-11-16 11:26:58,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9108187134502924 [2022-11-16 11:26:58,899 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6230 transitions. [2022-11-16 11:26:58,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6230 transitions. [2022-11-16 11:26:58,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:58,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6230 transitions. [2022-11-16 11:26:58,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 415.3333333333333) internal successors, (6230), 15 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:58,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 456.0) internal successors, (7296), 16 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:58,934 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 456.0) internal successors, (7296), 16 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:58,934 INFO L175 Difference]: Start difference. First operand has 442 places, 427 transitions, 996 flow. Second operand 15 states and 6230 transitions. [2022-11-16 11:26:58,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 427 transitions, 1033 flow [2022-11-16 11:26:58,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 427 transitions, 988 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-11-16 11:26:58,946 INFO L231 Difference]: Finished difference. Result has 437 places, 420 transitions, 934 flow [2022-11-16 11:26:58,947 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=934, PETRI_PLACES=437, PETRI_TRANSITIONS=420} [2022-11-16 11:26:58,948 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 26 predicate places. [2022-11-16 11:26:58,948 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 420 transitions, 934 flow [2022-11-16 11:26:58,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 416.94117647058823) internal successors, (7088), 17 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:58,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:58,951 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:58,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:59,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c523cdc3-ed95-4cf8-aecf-7e1f6c20b07c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:59,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:26:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:59,159 INFO L85 PathProgramCache]: Analyzing trace with hash 420245282, now seen corresponding path program 2 times [2022-11-16 11:26:59,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:59,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759062030] [2022-11-16 11:26:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:26:59,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:59,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759062030] [2022-11-16 11:26:59,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759062030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:59,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:59,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:26:59,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505049955] [2022-11-16 11:26:59,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:59,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:26:59,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:26:59,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:26:59,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 11:26:59,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 420 transitions, 934 flow. Second operand has 6 states, 6 states have (on average 398.1666666666667) internal successors, (2389), 6 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:59,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:59,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 11:26:59,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:00,568 INFO L130 PetriNetUnfolder]: 392/2526 cut-off events. [2022-11-16 11:27:00,568 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-11-16 11:27:00,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 2526 events. 392/2526 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 20892 event pairs, 62 based on Foata normal form. 0/2198 useless extension candidates. Maximal degree in co-relation 3489. Up to 526 conditions per place. [2022-11-16 11:27:00,625 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 49 selfloop transitions, 5 changer transitions 0/435 dead transitions. [2022-11-16 11:27:00,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 435 transitions, 1080 flow [2022-11-16 11:27:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:27:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:27:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2431 transitions. [2022-11-16 11:27:00,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8885233918128655 [2022-11-16 11:27:00,633 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2431 transitions. [2022-11-16 11:27:00,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2431 transitions. [2022-11-16 11:27:00,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:00,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2431 transitions. [2022-11-16 11:27:00,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 405.1666666666667) internal successors, (2431), 6 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:00,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:00,648 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:00,648 INFO L175 Difference]: Start difference. First operand has 437 places, 420 transitions, 934 flow. Second operand 6 states and 2431 transitions. [2022-11-16 11:27:00,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 435 transitions, 1080 flow [2022-11-16 11:27:00,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 435 transitions, 1055 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-16 11:27:00,660 INFO L231 Difference]: Finished difference. Result has 429 places, 419 transitions, 917 flow [2022-11-16 11:27:00,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=917, PETRI_PLACES=429, PETRI_TRANSITIONS=419} [2022-11-16 11:27:00,664 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 18 predicate places. [2022-11-16 11:27:00,664 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 419 transitions, 917 flow [2022-11-16 11:27:00,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.1666666666667) internal successors, (2389), 6 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:00,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:00,668 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:00,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:27:00,668 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash 142702985, now seen corresponding path program 1 times [2022-11-16 11:27:00,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:00,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617818502] [2022-11-16 11:27:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:00,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:00,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:00,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617818502] [2022-11-16 11:27:00,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617818502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:00,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:00,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268164434] [2022-11-16 11:27:00,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:00,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:00,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:00,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:00,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:27:00,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 419 transitions, 917 flow. Second operand has 4 states, 4 states have (on average 408.75) internal successors, (1635), 4 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:00,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:00,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:27:00,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:01,470 INFO L130 PetriNetUnfolder]: 165/1809 cut-off events. [2022-11-16 11:27:01,470 INFO L131 PetriNetUnfolder]: For 26/30 co-relation queries the response was YES. [2022-11-16 11:27:01,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 1809 events. 165/1809 cut-off events. For 26/30 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13642 event pairs, 48 based on Foata normal form. 0/1551 useless extension candidates. Maximal degree in co-relation 2333. Up to 140 conditions per place. [2022-11-16 11:27:01,512 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 37 selfloop transitions, 4 changer transitions 0/433 dead transitions. [2022-11-16 11:27:01,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 433 transitions, 1035 flow [2022-11-16 11:27:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:27:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:27:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1671 transitions. [2022-11-16 11:27:01,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9161184210526315 [2022-11-16 11:27:01,517 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1671 transitions. [2022-11-16 11:27:01,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1671 transitions. [2022-11-16 11:27:01,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:01,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1671 transitions. [2022-11-16 11:27:01,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.75) internal successors, (1671), 4 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:01,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:01,532 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:01,532 INFO L175 Difference]: Start difference. First operand has 429 places, 419 transitions, 917 flow. Second operand 4 states and 1671 transitions. [2022-11-16 11:27:01,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 433 transitions, 1035 flow [2022-11-16 11:27:01,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 1026 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:27:01,544 INFO L231 Difference]: Finished difference. Result has 430 places, 420 transitions, 932 flow [2022-11-16 11:27:01,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=932, PETRI_PLACES=430, PETRI_TRANSITIONS=420} [2022-11-16 11:27:01,546 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 19 predicate places. [2022-11-16 11:27:01,546 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 420 transitions, 932 flow [2022-11-16 11:27:01,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 408.75) internal successors, (1635), 4 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:01,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:01,548 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:01,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:27:01,548 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1634394061, now seen corresponding path program 1 times [2022-11-16 11:27:01,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:01,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601704649] [2022-11-16 11:27:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:01,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:01,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601704649] [2022-11-16 11:27:01,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601704649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:01,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:01,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640914304] [2022-11-16 11:27:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:01,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:01,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-16 11:27:01,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 420 transitions, 932 flow. Second operand has 4 states, 4 states have (on average 419.25) internal successors, (1677), 4 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:01,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:01,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-16 11:27:01,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:02,866 INFO L130 PetriNetUnfolder]: 186/1942 cut-off events. [2022-11-16 11:27:02,866 INFO L131 PetriNetUnfolder]: For 140/908 co-relation queries the response was YES. [2022-11-16 11:27:02,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1942 events. 186/1942 cut-off events. For 140/908 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 15521 event pairs, 21 based on Foata normal form. 0/1612 useless extension candidates. Maximal degree in co-relation 2341. Up to 175 conditions per place. [2022-11-16 11:27:02,950 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 27 selfloop transitions, 6 changer transitions 0/435 dead transitions. [2022-11-16 11:27:02,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 435 transitions, 1038 flow [2022-11-16 11:27:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:27:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:27:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2120 transitions. [2022-11-16 11:27:02,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9298245614035088 [2022-11-16 11:27:02,963 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2120 transitions. [2022-11-16 11:27:02,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2120 transitions. [2022-11-16 11:27:02,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:02,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2120 transitions. [2022-11-16 11:27:02,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:02,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:02,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:02,977 INFO L175 Difference]: Start difference. First operand has 430 places, 420 transitions, 932 flow. Second operand 5 states and 2120 transitions. [2022-11-16 11:27:02,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 435 transitions, 1038 flow [2022-11-16 11:27:02,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 435 transitions, 1038 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:27:02,990 INFO L231 Difference]: Finished difference. Result has 437 places, 423 transitions, 968 flow [2022-11-16 11:27:02,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=968, PETRI_PLACES=437, PETRI_TRANSITIONS=423} [2022-11-16 11:27:02,993 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 26 predicate places. [2022-11-16 11:27:02,993 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 423 transitions, 968 flow [2022-11-16 11:27:02,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.25) internal successors, (1677), 4 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:02,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:02,994 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:02,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:27:02,995 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash -809818599, now seen corresponding path program 1 times [2022-11-16 11:27:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:02,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830750259] [2022-11-16 11:27:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:03,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830750259] [2022-11-16 11:27:03,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830750259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:03,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:03,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:27:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998621566] [2022-11-16 11:27:03,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:03,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:27:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:27:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:27:03,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 11:27:03,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 423 transitions, 968 flow. Second operand has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:03,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:03,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 11:27:03,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:08,076 INFO L130 PetriNetUnfolder]: 3406/13321 cut-off events. [2022-11-16 11:27:08,076 INFO L131 PetriNetUnfolder]: For 1708/1876 co-relation queries the response was YES. [2022-11-16 11:27:08,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18996 conditions, 13321 events. 3406/13321 cut-off events. For 1708/1876 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 169457 event pairs, 522 based on Foata normal form. 0/10437 useless extension candidates. Maximal degree in co-relation 18978. Up to 3754 conditions per place. [2022-11-16 11:27:08,272 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 48 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-16 11:27:08,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 437 transitions, 1109 flow [2022-11-16 11:27:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:27:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:27:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2430 transitions. [2022-11-16 11:27:08,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8881578947368421 [2022-11-16 11:27:08,279 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2430 transitions. [2022-11-16 11:27:08,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2430 transitions. [2022-11-16 11:27:08,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:08,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2430 transitions. [2022-11-16 11:27:08,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:08,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:08,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:08,294 INFO L175 Difference]: Start difference. First operand has 437 places, 423 transitions, 968 flow. Second operand 6 states and 2430 transitions. [2022-11-16 11:27:08,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 437 transitions, 1109 flow [2022-11-16 11:27:08,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 437 transitions, 1105 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:27:08,307 INFO L231 Difference]: Finished difference. Result has 440 places, 422 transitions, 972 flow [2022-11-16 11:27:08,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=972, PETRI_PLACES=440, PETRI_TRANSITIONS=422} [2022-11-16 11:27:08,308 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 29 predicate places. [2022-11-16 11:27:08,309 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 422 transitions, 972 flow [2022-11-16 11:27:08,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:08,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:08,310 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:08,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:27:08,311 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash 665428434, now seen corresponding path program 1 times [2022-11-16 11:27:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:08,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472897092] [2022-11-16 11:27:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:08,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:08,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472897092] [2022-11-16 11:27:08,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472897092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:08,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:08,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:08,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36322146] [2022-11-16 11:27:08,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:08,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:08,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:08,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:27:08,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 422 transitions, 972 flow. Second operand has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:08,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:08,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:27:08,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:09,848 INFO L130 PetriNetUnfolder]: 450/2802 cut-off events. [2022-11-16 11:27:09,848 INFO L131 PetriNetUnfolder]: For 410/1775 co-relation queries the response was YES. [2022-11-16 11:27:09,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3945 conditions, 2802 events. 450/2802 cut-off events. For 410/1775 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 28030 event pairs, 168 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 3927. Up to 418 conditions per place. [2022-11-16 11:27:09,941 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 36 selfloop transitions, 4 changer transitions 0/435 dead transitions. [2022-11-16 11:27:09,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 435 transitions, 1085 flow [2022-11-16 11:27:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:27:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:27:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1670 transitions. [2022-11-16 11:27:09,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9155701754385965 [2022-11-16 11:27:09,955 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1670 transitions. [2022-11-16 11:27:09,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1670 transitions. [2022-11-16 11:27:09,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:09,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1670 transitions. [2022-11-16 11:27:09,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.5) internal successors, (1670), 4 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:09,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:09,971 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:09,971 INFO L175 Difference]: Start difference. First operand has 440 places, 422 transitions, 972 flow. Second operand 4 states and 1670 transitions. [2022-11-16 11:27:09,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 435 transitions, 1085 flow [2022-11-16 11:27:09,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 435 transitions, 1076 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:27:09,982 INFO L231 Difference]: Finished difference. Result has 441 places, 423 transitions, 987 flow [2022-11-16 11:27:09,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=441, PETRI_TRANSITIONS=423} [2022-11-16 11:27:09,984 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 30 predicate places. [2022-11-16 11:27:09,984 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 423 transitions, 987 flow [2022-11-16 11:27:09,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:09,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:09,986 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:09,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:27:09,986 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash -152845199, now seen corresponding path program 1 times [2022-11-16 11:27:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:09,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213807065] [2022-11-16 11:27:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:10,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:10,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213807065] [2022-11-16 11:27:10,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213807065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:10,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:10,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:10,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257466841] [2022-11-16 11:27:10,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:10,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:10,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:10,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:10,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:10,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:27:10,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 423 transitions, 987 flow. Second operand has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:10,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:10,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:27:10,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:11,294 INFO L130 PetriNetUnfolder]: 164/2688 cut-off events. [2022-11-16 11:27:11,294 INFO L131 PetriNetUnfolder]: For 158/1065 co-relation queries the response was YES. [2022-11-16 11:27:11,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3482 conditions, 2688 events. 164/2688 cut-off events. For 158/1065 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 23410 event pairs, 48 based on Foata normal form. 14/2377 useless extension candidates. Maximal degree in co-relation 3462. Up to 152 conditions per place. [2022-11-16 11:27:11,354 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 37 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-11-16 11:27:11,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 435 transitions, 1095 flow [2022-11-16 11:27:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:27:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:27:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1669 transitions. [2022-11-16 11:27:11,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150219298245614 [2022-11-16 11:27:11,360 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1669 transitions. [2022-11-16 11:27:11,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1669 transitions. [2022-11-16 11:27:11,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:11,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1669 transitions. [2022-11-16 11:27:11,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:11,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:11,370 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:11,370 INFO L175 Difference]: Start difference. First operand has 441 places, 423 transitions, 987 flow. Second operand 4 states and 1669 transitions. [2022-11-16 11:27:11,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 435 transitions, 1095 flow [2022-11-16 11:27:11,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 435 transitions, 1093 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:27:11,381 INFO L231 Difference]: Finished difference. Result has 443 places, 422 transitions, 985 flow [2022-11-16 11:27:11,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=985, PETRI_PLACES=443, PETRI_TRANSITIONS=422} [2022-11-16 11:27:11,383 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 32 predicate places. [2022-11-16 11:27:11,383 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 422 transitions, 985 flow [2022-11-16 11:27:11,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:11,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:11,384 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:11,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:27:11,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:11,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:11,385 INFO L85 PathProgramCache]: Analyzing trace with hash -443232721, now seen corresponding path program 1 times [2022-11-16 11:27:11,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:11,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730016342] [2022-11-16 11:27:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:11,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:11,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:11,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730016342] [2022-11-16 11:27:11,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730016342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:11,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:11,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:27:11,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228032883] [2022-11-16 11:27:11,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:11,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:27:11,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:11,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:27:11,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:27:11,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 11:27:11,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 422 transitions, 985 flow. Second operand has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:11,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:11,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 11:27:11,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:13,809 INFO L130 PetriNetUnfolder]: 642/4448 cut-off events. [2022-11-16 11:27:13,809 INFO L131 PetriNetUnfolder]: For 344/9854 co-relation queries the response was YES. [2022-11-16 11:27:13,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6186 conditions, 4448 events. 642/4448 cut-off events. For 344/9854 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 44121 event pairs, 112 based on Foata normal form. 8/3835 useless extension candidates. Maximal degree in co-relation 6166. Up to 924 conditions per place. [2022-11-16 11:27:13,934 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 47 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-16 11:27:13,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 437 transitions, 1127 flow [2022-11-16 11:27:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:27:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:27:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2429 transitions. [2022-11-16 11:27:13,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877923976608187 [2022-11-16 11:27:13,941 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2429 transitions. [2022-11-16 11:27:13,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2429 transitions. [2022-11-16 11:27:13,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:13,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2429 transitions. [2022-11-16 11:27:13,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.8333333333333) internal successors, (2429), 6 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:13,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:13,955 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:13,956 INFO L175 Difference]: Start difference. First operand has 443 places, 422 transitions, 985 flow. Second operand 6 states and 2429 transitions. [2022-11-16 11:27:13,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 437 transitions, 1127 flow [2022-11-16 11:27:13,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 437 transitions, 1122 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:13,967 INFO L231 Difference]: Finished difference. Result has 445 places, 421 transitions, 988 flow [2022-11-16 11:27:13,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=988, PETRI_PLACES=445, PETRI_TRANSITIONS=421} [2022-11-16 11:27:13,969 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 34 predicate places. [2022-11-16 11:27:13,969 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 421 transitions, 988 flow [2022-11-16 11:27:13,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:13,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:13,970 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:13,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:27:13,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:13,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:13,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1272281293, now seen corresponding path program 1 times [2022-11-16 11:27:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:13,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951079318] [2022-11-16 11:27:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:13,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:14,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:14,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951079318] [2022-11-16 11:27:14,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951079318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:14,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:14,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:14,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263827077] [2022-11-16 11:27:14,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:14,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:14,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:14,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-16 11:27:14,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 421 transitions, 988 flow. Second operand has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:14,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:14,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-16 11:27:14,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:16,957 INFO L130 PetriNetUnfolder]: 1065/9095 cut-off events. [2022-11-16 11:27:16,957 INFO L131 PetriNetUnfolder]: For 816/1261 co-relation queries the response was YES. [2022-11-16 11:27:17,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 9095 events. 1065/9095 cut-off events. For 816/1261 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 113379 event pairs, 420 based on Foata normal form. 3/7122 useless extension candidates. Maximal degree in co-relation 10817. Up to 940 conditions per place. [2022-11-16 11:27:17,036 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 26 selfloop transitions, 6 changer transitions 0/435 dead transitions. [2022-11-16 11:27:17,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 435 transitions, 1086 flow [2022-11-16 11:27:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:27:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:27:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2119 transitions. [2022-11-16 11:27:17,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9293859649122806 [2022-11-16 11:27:17,042 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2119 transitions. [2022-11-16 11:27:17,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2119 transitions. [2022-11-16 11:27:17,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:17,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2119 transitions. [2022-11-16 11:27:17,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 423.8) internal successors, (2119), 5 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:17,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:17,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:17,054 INFO L175 Difference]: Start difference. First operand has 445 places, 421 transitions, 988 flow. Second operand 5 states and 2119 transitions. [2022-11-16 11:27:17,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 435 transitions, 1086 flow [2022-11-16 11:27:17,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 435 transitions, 1077 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:27:17,064 INFO L231 Difference]: Finished difference. Result has 448 places, 424 transitions, 1015 flow [2022-11-16 11:27:17,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1015, PETRI_PLACES=448, PETRI_TRANSITIONS=424} [2022-11-16 11:27:17,065 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 37 predicate places. [2022-11-16 11:27:17,066 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 424 transitions, 1015 flow [2022-11-16 11:27:17,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:17,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:17,067 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:27:17,067 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:17,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash -325223692, now seen corresponding path program 1 times [2022-11-16 11:27:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:17,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250725536] [2022-11-16 11:27:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:17,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:17,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250725536] [2022-11-16 11:27:17,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250725536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:17,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:17,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:17,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311588329] [2022-11-16 11:27:17,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:17,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:17,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:17,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:27:17,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 424 transitions, 1015 flow. Second operand has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:17,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:17,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:27:17,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:18,594 INFO L130 PetriNetUnfolder]: 205/3307 cut-off events. [2022-11-16 11:27:18,594 INFO L131 PetriNetUnfolder]: For 130/1885 co-relation queries the response was YES. [2022-11-16 11:27:18,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 3307 events. 205/3307 cut-off events. For 130/1885 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 31177 event pairs, 72 based on Foata normal form. 14/2916 useless extension candidates. Maximal degree in co-relation 4280. Up to 226 conditions per place. [2022-11-16 11:27:18,659 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 34 selfloop transitions, 3 changer transitions 0/436 dead transitions. [2022-11-16 11:27:18,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 436 transitions, 1119 flow [2022-11-16 11:27:18,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:27:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:27:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1666 transitions. [2022-11-16 11:27:18,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9133771929824561 [2022-11-16 11:27:18,663 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1666 transitions. [2022-11-16 11:27:18,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1666 transitions. [2022-11-16 11:27:18,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:18,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1666 transitions. [2022-11-16 11:27:18,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 416.5) internal successors, (1666), 4 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:18,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:18,671 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:18,671 INFO L175 Difference]: Start difference. First operand has 448 places, 424 transitions, 1015 flow. Second operand 4 states and 1666 transitions. [2022-11-16 11:27:18,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 436 transitions, 1119 flow [2022-11-16 11:27:18,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 436 transitions, 1113 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:18,682 INFO L231 Difference]: Finished difference. Result has 449 places, 424 transitions, 1018 flow [2022-11-16 11:27:18,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1018, PETRI_PLACES=449, PETRI_TRANSITIONS=424} [2022-11-16 11:27:18,684 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 38 predicate places. [2022-11-16 11:27:18,684 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 424 transitions, 1018 flow [2022-11-16 11:27:18,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:18,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:18,685 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:27:18,685 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1825742713, now seen corresponding path program 1 times [2022-11-16 11:27:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:18,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136923787] [2022-11-16 11:27:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:18,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:18,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:18,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136923787] [2022-11-16 11:27:18,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136923787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:18,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:18,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:27:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365162897] [2022-11-16 11:27:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:18,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:27:18,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:27:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:27:18,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 11:27:18,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 424 transitions, 1018 flow. Second operand has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:18,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:18,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 11:27:18,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:29,020 INFO L130 PetriNetUnfolder]: 8531/36059 cut-off events. [2022-11-16 11:27:29,020 INFO L131 PetriNetUnfolder]: For 5408/5479 co-relation queries the response was YES. [2022-11-16 11:27:29,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51991 conditions, 36059 events. 8531/36059 cut-off events. For 5408/5479 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 535563 event pairs, 1224 based on Foata normal form. 0/28577 useless extension candidates. Maximal degree in co-relation 51967. Up to 10146 conditions per place. [2022-11-16 11:27:29,405 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 47 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-16 11:27:29,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 437 transitions, 1152 flow [2022-11-16 11:27:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:27:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:27:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2429 transitions. [2022-11-16 11:27:29,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877923976608187 [2022-11-16 11:27:29,410 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2429 transitions. [2022-11-16 11:27:29,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2429 transitions. [2022-11-16 11:27:29,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:29,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2429 transitions. [2022-11-16 11:27:29,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.8333333333333) internal successors, (2429), 6 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,421 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,421 INFO L175 Difference]: Start difference. First operand has 449 places, 424 transitions, 1018 flow. Second operand 6 states and 2429 transitions. [2022-11-16 11:27:29,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 437 transitions, 1152 flow [2022-11-16 11:27:29,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 437 transitions, 1150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:27:29,445 INFO L231 Difference]: Finished difference. Result has 452 places, 423 transitions, 1024 flow [2022-11-16 11:27:29,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1024, PETRI_PLACES=452, PETRI_TRANSITIONS=423} [2022-11-16 11:27:29,447 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 41 predicate places. [2022-11-16 11:27:29,447 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 423 transitions, 1024 flow [2022-11-16 11:27:29,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:29,448 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:29,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:27:29,448 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:29,449 INFO L85 PathProgramCache]: Analyzing trace with hash 763450578, now seen corresponding path program 1 times [2022-11-16 11:27:29,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:29,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645705660] [2022-11-16 11:27:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:29,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:29,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:29,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645705660] [2022-11-16 11:27:29,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645705660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:29,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:29,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:29,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723009666] [2022-11-16 11:27:29,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:29,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:29,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:27:29,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 423 transitions, 1024 flow. Second operand has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:29,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:27:29,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:33,901 INFO L130 PetriNetUnfolder]: 3371/13376 cut-off events. [2022-11-16 11:27:33,901 INFO L131 PetriNetUnfolder]: For 3324/5234 co-relation queries the response was YES. [2022-11-16 11:27:33,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20258 conditions, 13376 events. 3371/13376 cut-off events. For 3324/5234 co-relation queries the response was YES. Maximal size of possible extension queue 2078. Compared 197385 event pairs, 1344 based on Foata normal form. 4/9124 useless extension candidates. Maximal degree in co-relation 20234. Up to 3052 conditions per place. [2022-11-16 11:27:34,043 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 35 selfloop transitions, 4 changer transitions 0/435 dead transitions. [2022-11-16 11:27:34,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 435 transitions, 1130 flow [2022-11-16 11:27:34,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:27:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:27:34,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1669 transitions. [2022-11-16 11:27:34,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150219298245614 [2022-11-16 11:27:34,047 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1669 transitions. [2022-11-16 11:27:34,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1669 transitions. [2022-11-16 11:27:34,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:34,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1669 transitions. [2022-11-16 11:27:34,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:34,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:34,054 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:34,055 INFO L175 Difference]: Start difference. First operand has 452 places, 423 transitions, 1024 flow. Second operand 4 states and 1669 transitions. [2022-11-16 11:27:34,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 435 transitions, 1130 flow [2022-11-16 11:27:34,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 435 transitions, 1121 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:27:34,068 INFO L231 Difference]: Finished difference. Result has 453 places, 424 transitions, 1039 flow [2022-11-16 11:27:34,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1039, PETRI_PLACES=453, PETRI_TRANSITIONS=424} [2022-11-16 11:27:34,069 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 42 predicate places. [2022-11-16 11:27:34,070 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 424 transitions, 1039 flow [2022-11-16 11:27:34,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:34,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:34,071 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:34,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:27:34,071 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash -621427782, now seen corresponding path program 1 times [2022-11-16 11:27:34,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:34,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513181654] [2022-11-16 11:27:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:34,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:34,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513181654] [2022-11-16 11:27:34,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513181654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:34,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:34,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:34,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886056443] [2022-11-16 11:27:34,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:34,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:34,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:34,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:27:34,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 424 transitions, 1039 flow. Second operand has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:34,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:34,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:27:34,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:36,920 INFO L130 PetriNetUnfolder]: 551/4105 cut-off events. [2022-11-16 11:27:36,920 INFO L131 PetriNetUnfolder]: For 790/2815 co-relation queries the response was YES. [2022-11-16 11:27:37,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 4105 events. 551/4105 cut-off events. For 790/2815 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 45719 event pairs, 216 based on Foata normal form. 20/3320 useless extension candidates. Maximal degree in co-relation 5824. Up to 500 conditions per place. [2022-11-16 11:27:37,084 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 36 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-11-16 11:27:37,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 435 transitions, 1142 flow [2022-11-16 11:27:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:27:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:27:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1668 transitions. [2022-11-16 11:27:37,088 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9144736842105263 [2022-11-16 11:27:37,088 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1668 transitions. [2022-11-16 11:27:37,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1668 transitions. [2022-11-16 11:27:37,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:37,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1668 transitions. [2022-11-16 11:27:37,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:37,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:37,097 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:37,098 INFO L175 Difference]: Start difference. First operand has 453 places, 424 transitions, 1039 flow. Second operand 4 states and 1668 transitions. [2022-11-16 11:27:37,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 435 transitions, 1142 flow [2022-11-16 11:27:37,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 435 transitions, 1140 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:27:37,112 INFO L231 Difference]: Finished difference. Result has 455 places, 423 transitions, 1037 flow [2022-11-16 11:27:37,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1037, PETRI_PLACES=455, PETRI_TRANSITIONS=423} [2022-11-16 11:27:37,113 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 44 predicate places. [2022-11-16 11:27:37,113 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 423 transitions, 1037 flow [2022-11-16 11:27:37,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:37,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:37,114 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:37,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:27:37,115 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2081742860, now seen corresponding path program 1 times [2022-11-16 11:27:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:37,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489297455] [2022-11-16 11:27:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:37,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:37,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489297455] [2022-11-16 11:27:37,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489297455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:37,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:37,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:27:37,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453204529] [2022-11-16 11:27:37,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:37,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:27:37,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:37,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:27:37,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:27:37,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 456 [2022-11-16 11:27:37,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 423 transitions, 1037 flow. Second operand has 8 states, 8 states have (on average 393.25) internal successors, (3146), 8 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:37,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:37,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 456 [2022-11-16 11:27:37,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:42,053 INFO L130 PetriNetUnfolder]: 2157/10426 cut-off events. [2022-11-16 11:27:42,054 INFO L131 PetriNetUnfolder]: For 428/465 co-relation queries the response was YES. [2022-11-16 11:27:42,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16998 conditions, 10426 events. 2157/10426 cut-off events. For 428/465 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 121826 event pairs, 180 based on Foata normal form. 8/9575 useless extension candidates. Maximal degree in co-relation 16972. Up to 1758 conditions per place. [2022-11-16 11:27:42,669 INFO L137 encePairwiseOnDemand]: 446/456 looper letters, 64 selfloop transitions, 9 changer transitions 0/455 dead transitions. [2022-11-16 11:27:42,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 455 transitions, 1261 flow [2022-11-16 11:27:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:27:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:27:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3202 transitions. [2022-11-16 11:27:42,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777412280701754 [2022-11-16 11:27:42,675 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3202 transitions. [2022-11-16 11:27:42,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3202 transitions. [2022-11-16 11:27:42,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:42,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3202 transitions. [2022-11-16 11:27:42,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 400.25) internal successors, (3202), 8 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:42,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:42,693 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:42,693 INFO L175 Difference]: Start difference. First operand has 455 places, 423 transitions, 1037 flow. Second operand 8 states and 3202 transitions. [2022-11-16 11:27:42,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 455 transitions, 1261 flow [2022-11-16 11:27:42,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 455 transitions, 1256 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:42,710 INFO L231 Difference]: Finished difference. Result has 462 places, 424 transitions, 1062 flow [2022-11-16 11:27:42,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1062, PETRI_PLACES=462, PETRI_TRANSITIONS=424} [2022-11-16 11:27:42,712 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 51 predicate places. [2022-11-16 11:27:42,712 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 424 transitions, 1062 flow [2022-11-16 11:27:42,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 393.25) internal successors, (3146), 8 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:42,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:42,713 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:42,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:27:42,714 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:27:42,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2084390810, now seen corresponding path program 1 times [2022-11-16 11:27:42,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:42,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806388354] [2022-11-16 11:27:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:42,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:27:42,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:42,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806388354] [2022-11-16 11:27:42,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806388354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:42,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:42,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:27:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931009768] [2022-11-16 11:27:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:42,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:27:42,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:42,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:27:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:27:42,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 11:27:42,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 424 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 398.6666666666667) internal successors, (2392), 6 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:42,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:42,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 11:27:42,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand