./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R --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 b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da --- 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-38b53e6 [2022-11-25 16:49:02,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:49:02,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:49:02,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:49:02,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:49:02,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:49:02,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:49:02,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:49:02,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:49:02,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:49:02,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:49:02,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:49:02,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:49:02,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:49:02,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:49:02,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:49:02,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:49:02,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:49:02,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:49:02,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:49:02,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:49:02,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:49:02,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:49:02,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:49:02,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:49:02,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:49:02,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:49:02,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:49:02,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:49:02,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:49:02,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:49:02,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:49:02,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:49:02,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:49:02,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:49:02,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:49:02,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:49:02,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:49:02,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:49:02,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:49:02,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:49:02,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 16:49:02,756 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:49:02,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:49:02,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:49:02,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:49:02,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:49:02,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:49:02,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:49:02,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:49:02,761 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:49:02,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:49:02,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:49:02,763 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:49:02,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:49:02,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:49:02,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:49:02,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:49:02,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:49:02,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:49:02,765 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:49:02,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:49:02,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:49:02,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:49:02,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:49:02,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:49:02,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:49:02,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:49:02,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:49:02,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:49:02,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:49:02,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:49:02,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:49:02,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:49:02,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:49:02,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:49:02,771 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:49:02,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:49:02,771 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da [2022-11-25 16:49:03,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:49:03,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:49:03,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:49:03,109 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:49:03,110 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:49:03,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-11-25 16:49:06,389 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:49:06,591 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:49:06,592 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-11-25 16:49:06,600 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/data/46911a3f9/87c11fd9a8d44a809bcc4700875624f7/FLAG116c0f09e [2022-11-25 16:49:06,618 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/data/46911a3f9/87c11fd9a8d44a809bcc4700875624f7 [2022-11-25 16:49:06,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:49:06,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:49:06,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:49:06,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:49:06,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:49:06,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:06,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1243061f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06, skipping insertion in model container [2022-11-25 16:49:06,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:06,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:49:06,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:49:06,887 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-11-25 16:49:06,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:49:06,909 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:49:06,939 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-11-25 16:49:06,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:49:06,965 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:49:06,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06 WrapperNode [2022-11-25 16:49:06,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:49:06,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:49:06,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:49:06,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:49:06,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:06,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,025 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 238 [2022-11-25 16:49:07,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:49:07,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:49:07,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:49:07,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:49:07,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,066 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:49:07,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:49:07,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:49:07,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:49:07,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (1/1) ... [2022-11-25 16:49:07,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:49:07,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:07,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:49:07,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:49:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:49:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:49:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:49:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:49:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 16:49:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 16:49:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 16:49:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 16:49:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:49:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:49:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:49:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:49:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:49:07,179 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:49:07,370 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:49:07,373 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:49:07,922 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:49:07,937 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:49:07,937 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 16:49:07,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:49:07 BoogieIcfgContainer [2022-11-25 16:49:07,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:49:07,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:49:07,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:49:07,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:49:07,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:49:06" (1/3) ... [2022-11-25 16:49:07,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c295aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:49:07, skipping insertion in model container [2022-11-25 16:49:07,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:06" (2/3) ... [2022-11-25 16:49:07,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c295aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:49:07, skipping insertion in model container [2022-11-25 16:49:07,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:49:07" (3/3) ... [2022-11-25 16:49:07,970 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2022-11-25 16:49:07,987 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:49:08,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:49:08,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-25 16:49:08,026 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:49:08,211 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 16:49:08,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 325 transitions, 666 flow [2022-11-25 16:49:08,553 INFO L130 PetriNetUnfolder]: 25/323 cut-off events. [2022-11-25 16:49:08,554 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:49:08,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 323 events. 25/323 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 634 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 203. Up to 3 conditions per place. [2022-11-25 16:49:08,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 325 transitions, 666 flow [2022-11-25 16:49:08,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 288 transitions, 585 flow [2022-11-25 16:49:08,579 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:49:08,597 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 288 transitions, 585 flow [2022-11-25 16:49:08,601 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 288 transitions, 585 flow [2022-11-25 16:49:08,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 288 transitions, 585 flow [2022-11-25 16:49:08,673 INFO L130 PetriNetUnfolder]: 22/288 cut-off events. [2022-11-25 16:49:08,673 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:49:08,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 288 events. 22/288 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 473 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 203. Up to 3 conditions per place. [2022-11-25 16:49:08,685 INFO L119 LiptonReduction]: Number of co-enabled transitions 15200 [2022-11-25 16:49:29,065 INFO L134 LiptonReduction]: Checked pairs total: 17906 [2022-11-25 16:49:29,065 INFO L136 LiptonReduction]: Total number of compositions: 364 [2022-11-25 16:49:29,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:49:29,095 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;@1abff123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:49:29,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-25 16:49:29,099 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:49:29,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:49:29,100 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:29,100 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:49:29,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:29,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:29,108 INFO L85 PathProgramCache]: Analyzing trace with hash 41408, now seen corresponding path program 1 times [2022-11-25 16:49:29,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:29,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456058266] [2022-11-25 16:49:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:29,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:29,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:29,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456058266] [2022-11-25 16:49:29,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456058266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:29,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:29,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:49:29,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512918937] [2022-11-25 16:49:29,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:29,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:29,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:29,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 689 [2022-11-25 16:49:29,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:29,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:29,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 689 [2022-11-25 16:49:29,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:30,319 INFO L130 PetriNetUnfolder]: 1077/1803 cut-off events. [2022-11-25 16:49:30,320 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-11-25 16:49:30,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3692 conditions, 1803 events. 1077/1803 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9498 event pairs, 918 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 1728. Up to 905 conditions per place. [2022-11-25 16:49:30,337 INFO L137 encePairwiseOnDemand]: 677/689 looper letters, 73 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2022-11-25 16:49:30,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 326 flow [2022-11-25 16:49:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:30,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:49:30,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 986 transitions. [2022-11-25 16:49:30,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47701983551040156 [2022-11-25 16:49:30,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 986 transitions. [2022-11-25 16:49:30,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 986 transitions. [2022-11-25 16:49:30,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:30,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 986 transitions. [2022-11-25 16:49:30,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:30,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:30,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:30,415 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 99 flow. Second operand 3 states and 986 transitions. [2022-11-25 16:49:30,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 326 flow [2022-11-25 16:49:30,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 77 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 16:49:30,430 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 122 flow [2022-11-25 16:49:30,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2022-11-25 16:49:30,438 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2022-11-25 16:49:30,438 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 122 flow [2022-11-25 16:49:30,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:30,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:30,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:49:30,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:49:30,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:30,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1286491, now seen corresponding path program 1 times [2022-11-25 16:49:30,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:30,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050143005] [2022-11-25 16:49:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:30,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:30,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:30,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050143005] [2022-11-25 16:49:30,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050143005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:49:30,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733128310] [2022-11-25 16:49:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:30,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:30,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:30,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:49:30,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:49:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:30,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:49:30,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:49:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:30,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:49:30,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733128310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:30,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:49:30,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 16:49:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395341756] [2022-11-25 16:49:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:30,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:49:30,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:49:30,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:49:30,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 689 [2022-11-25 16:49:30,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 299.75) internal successors, (1199), 4 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:30,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:30,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 689 [2022-11-25 16:49:30,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:31,389 INFO L130 PetriNetUnfolder]: 1077/1801 cut-off events. [2022-11-25 16:49:31,389 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-25 16:49:31,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3677 conditions, 1801 events. 1077/1801 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9483 event pairs, 918 based on Foata normal form. 0/779 useless extension candidates. Maximal degree in co-relation 1827. Up to 902 conditions per place. [2022-11-25 16:49:31,402 INFO L137 encePairwiseOnDemand]: 683/689 looper letters, 71 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-11-25 16:49:31,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 75 transitions, 334 flow [2022-11-25 16:49:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:49:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:49:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1273 transitions. [2022-11-25 16:49:31,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4619013062409289 [2022-11-25 16:49:31,407 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1273 transitions. [2022-11-25 16:49:31,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1273 transitions. [2022-11-25 16:49:31,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:31,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1273 transitions. [2022-11-25 16:49:31,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 318.25) internal successors, (1273), 4 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:31,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 689.0) internal successors, (3445), 5 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:31,421 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 689.0) internal successors, (3445), 5 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:31,421 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 122 flow. Second operand 4 states and 1273 transitions. [2022-11-25 16:49:31,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 75 transitions, 334 flow [2022-11-25 16:49:31,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 75 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:49:31,424 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 114 flow [2022-11-25 16:49:31,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-11-25 16:49:31,425 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2022-11-25 16:49:31,425 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 114 flow [2022-11-25 16:49:31,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 299.75) internal successors, (1199), 4 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:31,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:31,427 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:49:31,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:49:31,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:31,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:31,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1286492, now seen corresponding path program 1 times [2022-11-25 16:49:31,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:31,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188563688] [2022-11-25 16:49:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:31,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:31,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:31,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188563688] [2022-11-25 16:49:31,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188563688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:49:31,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188541772] [2022-11-25 16:49:31,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:31,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:31,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:49:31,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:49:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:31,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:49:31,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:49:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:31,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:49:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:31,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188541772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:49:31,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:49:31,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 16:49:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308678117] [2022-11-25 16:49:31,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:49:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:49:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:49:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:49:32,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 689 [2022-11-25 16:49:32,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 300.14285714285717) internal successors, (2101), 7 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:32,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:32,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 689 [2022-11-25 16:49:32,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:33,251 INFO L130 PetriNetUnfolder]: 2691/4498 cut-off events. [2022-11-25 16:49:33,252 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-25 16:49:33,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 4498 events. 2691/4498 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27502 event pairs, 2295 based on Foata normal form. 0/1946 useless extension candidates. Maximal degree in co-relation 7299. Up to 903 conditions per place. [2022-11-25 16:49:33,279 INFO L137 encePairwiseOnDemand]: 683/689 looper letters, 170 selfloop transitions, 13 changer transitions 0/183 dead transitions. [2022-11-25 16:49:33,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 183 transitions, 802 flow [2022-11-25 16:49:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:49:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:49:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1983 transitions. [2022-11-25 16:49:33,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4796806966618287 [2022-11-25 16:49:33,285 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1983 transitions. [2022-11-25 16:49:33,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1983 transitions. [2022-11-25 16:49:33,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:33,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1983 transitions. [2022-11-25 16:49:33,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 330.5) internal successors, (1983), 6 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:33,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 689.0) internal successors, (4823), 7 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:33,300 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 689.0) internal successors, (4823), 7 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:33,301 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 114 flow. Second operand 6 states and 1983 transitions. [2022-11-25 16:49:33,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 183 transitions, 802 flow [2022-11-25 16:49:33,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 183 transitions, 794 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:49:33,307 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 205 flow [2022-11-25 16:49:33,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2022-11-25 16:49:33,309 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2022-11-25 16:49:33,309 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 205 flow [2022-11-25 16:49:33,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 300.14285714285717) internal successors, (2101), 7 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:33,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:33,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:49:33,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 16:49:33,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:33,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:33,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:33,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1237410985, now seen corresponding path program 1 times [2022-11-25 16:49:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:33,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836673393] [2022-11-25 16:49:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:33,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:33,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:33,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836673393] [2022-11-25 16:49:33,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836673393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:33,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:33,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:49:33,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690829702] [2022-11-25 16:49:33,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:33,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:49:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:33,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:49:33,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:49:33,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 689 [2022-11-25 16:49:33,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:33,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:33,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 689 [2022-11-25 16:49:33,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:34,793 INFO L130 PetriNetUnfolder]: 2516/4203 cut-off events. [2022-11-25 16:49:34,794 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-25 16:49:34,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8598 conditions, 4203 events. 2516/4203 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 25842 event pairs, 2130 based on Foata normal form. 0/1863 useless extension candidates. Maximal degree in co-relation 6829. Up to 3360 conditions per place. [2022-11-25 16:49:34,825 INFO L137 encePairwiseOnDemand]: 684/689 looper letters, 75 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2022-11-25 16:49:34,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 82 transitions, 435 flow [2022-11-25 16:49:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:49:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:49:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1227 transitions. [2022-11-25 16:49:34,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4452104499274311 [2022-11-25 16:49:34,831 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1227 transitions. [2022-11-25 16:49:34,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1227 transitions. [2022-11-25 16:49:34,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:34,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1227 transitions. [2022-11-25 16:49:34,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.75) internal successors, (1227), 4 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:34,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 689.0) internal successors, (3445), 5 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:34,845 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 689.0) internal successors, (3445), 5 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:34,845 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 205 flow. Second operand 4 states and 1227 transitions. [2022-11-25 16:49:34,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 82 transitions, 435 flow [2022-11-25 16:49:34,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 82 transitions, 416 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 16:49:34,849 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 198 flow [2022-11-25 16:49:34,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2022-11-25 16:49:34,850 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2022-11-25 16:49:34,850 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 198 flow [2022-11-25 16:49:34,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:34,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:34,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:49:34,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:49:34,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:34,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:34,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1237411151, now seen corresponding path program 1 times [2022-11-25 16:49:34,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:34,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644915832] [2022-11-25 16:49:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:34,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:34,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644915832] [2022-11-25 16:49:34,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644915832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:34,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:34,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:49:34,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169642815] [2022-11-25 16:49:34,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:34,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:49:34,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:34,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:49:34,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:49:35,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 689 [2022-11-25 16:49:35,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 292.25) internal successors, (1169), 4 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:35,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:35,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 689 [2022-11-25 16:49:35,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:36,627 INFO L130 PetriNetUnfolder]: 4585/7599 cut-off events. [2022-11-25 16:49:36,628 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-11-25 16:49:36,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15528 conditions, 7599 events. 4585/7599 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 50667 event pairs, 3731 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 9325. Up to 3847 conditions per place. [2022-11-25 16:49:36,696 INFO L137 encePairwiseOnDemand]: 682/689 looper letters, 111 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2022-11-25 16:49:36,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 116 transitions, 600 flow [2022-11-25 16:49:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:49:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:49:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1562 transitions. [2022-11-25 16:49:36,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45341074020319305 [2022-11-25 16:49:36,702 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1562 transitions. [2022-11-25 16:49:36,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1562 transitions. [2022-11-25 16:49:36,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:36,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1562 transitions. [2022-11-25 16:49:36,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.4) internal successors, (1562), 5 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:36,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 689.0) internal successors, (4134), 6 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:36,723 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 689.0) internal successors, (4134), 6 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:36,723 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 198 flow. Second operand 5 states and 1562 transitions. [2022-11-25 16:49:36,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 116 transitions, 600 flow [2022-11-25 16:49:36,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 116 transitions, 584 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 16:49:36,734 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 222 flow [2022-11-25 16:49:36,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2022-11-25 16:49:36,739 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2022-11-25 16:49:36,740 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 222 flow [2022-11-25 16:49:36,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.25) internal successors, (1169), 4 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:36,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:36,741 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 16:49:36,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:49:36,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:36,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:36,742 INFO L85 PathProgramCache]: Analyzing trace with hash -325998400, now seen corresponding path program 2 times [2022-11-25 16:49:36,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:36,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635780285] [2022-11-25 16:49:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:36,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:36,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:36,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635780285] [2022-11-25 16:49:36,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635780285] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:49:36,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322540701] [2022-11-25 16:49:36,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:49:36,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:36,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:36,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:49:36,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:49:37,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 16:49:37,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:49:37,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:49:37,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:49:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 16:49:37,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:49:37,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322540701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:37,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:49:37,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 16:49:37,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547435266] [2022-11-25 16:49:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:37,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:37,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:37,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:49:37,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 689 [2022-11-25 16:49:37,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:37,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:37,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 689 [2022-11-25 16:49:37,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:38,506 INFO L130 PetriNetUnfolder]: 4585/7598 cut-off events. [2022-11-25 16:49:38,507 INFO L131 PetriNetUnfolder]: For 1229/1229 co-relation queries the response was YES. [2022-11-25 16:49:38,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16433 conditions, 7598 events. 4585/7598 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 50940 event pairs, 3761 based on Foata normal form. 1/3933 useless extension candidates. Maximal degree in co-relation 9872. Up to 7593 conditions per place. [2022-11-25 16:49:38,559 INFO L137 encePairwiseOnDemand]: 686/689 looper letters, 45 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2022-11-25 16:49:38,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 314 flow [2022-11-25 16:49:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:49:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2022-11-25 16:49:38,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45524915336236094 [2022-11-25 16:49:38,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2022-11-25 16:49:38,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2022-11-25 16:49:38,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:38,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2022-11-25 16:49:38,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:38,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:38,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:38,574 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 222 flow. Second operand 3 states and 941 transitions. [2022-11-25 16:49:38,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 314 flow [2022-11-25 16:49:38,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 310 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-25 16:49:38,579 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 220 flow [2022-11-25 16:49:38,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2022-11-25 16:49:38,580 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 8 predicate places. [2022-11-25 16:49:38,580 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 220 flow [2022-11-25 16:49:38,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:38,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:38,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 16:49:38,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:49:38,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:38,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:38,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash -324997069, now seen corresponding path program 1 times [2022-11-25 16:49:38,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:38,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854084333] [2022-11-25 16:49:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:38,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:38,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:38,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854084333] [2022-11-25 16:49:38,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854084333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:49:38,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186071409] [2022-11-25 16:49:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:38,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:38,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:38,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:49:38,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:49:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:39,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 16:49:39,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:49:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:49:39,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:49:39,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186071409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:39,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:49:39,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-25 16:49:39,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853689706] [2022-11-25 16:49:39,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:39,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:49:39,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:49:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:49:39,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 689 [2022-11-25 16:49:39,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:39,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:39,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 689 [2022-11-25 16:49:39,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:40,304 INFO L130 PetriNetUnfolder]: 3820/6323 cut-off events. [2022-11-25 16:49:40,305 INFO L131 PetriNetUnfolder]: For 1151/1151 co-relation queries the response was YES. [2022-11-25 16:49:40,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13358 conditions, 6323 events. 3820/6323 cut-off events. For 1151/1151 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 40954 event pairs, 3066 based on Foata normal form. 220/3447 useless extension candidates. Maximal degree in co-relation 8026. Up to 6317 conditions per place. [2022-11-25 16:49:40,345 INFO L137 encePairwiseOnDemand]: 684/689 looper letters, 42 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2022-11-25 16:49:40,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 302 flow [2022-11-25 16:49:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:49:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:49:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1233 transitions. [2022-11-25 16:49:40,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4473875181422351 [2022-11-25 16:49:40,351 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1233 transitions. [2022-11-25 16:49:40,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1233 transitions. [2022-11-25 16:49:40,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:40,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1233 transitions. [2022-11-25 16:49:40,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 308.25) internal successors, (1233), 4 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:40,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 689.0) internal successors, (3445), 5 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:40,363 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 689.0) internal successors, (3445), 5 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:40,364 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 220 flow. Second operand 4 states and 1233 transitions. [2022-11-25 16:49:40,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 302 flow [2022-11-25 16:49:40,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 16:49:40,368 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 204 flow [2022-11-25 16:49:40,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2022-11-25 16:49:40,369 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2022-11-25 16:49:40,370 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 204 flow [2022-11-25 16:49:40,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:40,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:40,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:49:40,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:49:40,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 16:49:40,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash -553793743, now seen corresponding path program 1 times [2022-11-25 16:49:40,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:40,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216752191] [2022-11-25 16:49:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:40,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:40,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216752191] [2022-11-25 16:49:40,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216752191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:40,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:40,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:49:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540751594] [2022-11-25 16:49:40,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:40,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:40,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:40,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:40,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 689 [2022-11-25 16:49:40,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:40,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:40,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 689 [2022-11-25 16:49:40,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:42,903 INFO L130 PetriNetUnfolder]: 6766/11169 cut-off events. [2022-11-25 16:49:42,903 INFO L131 PetriNetUnfolder]: For 518/518 co-relation queries the response was YES. [2022-11-25 16:49:42,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23529 conditions, 11169 events. 6766/11169 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 80002 event pairs, 3066 based on Foata normal form. 0/5721 useless extension candidates. Maximal degree in co-relation 14154. Up to 6324 conditions per place. [2022-11-25 16:49:42,966 INFO L137 encePairwiseOnDemand]: 685/689 looper letters, 71 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-11-25 16:49:42,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 73 transitions, 408 flow [2022-11-25 16:49:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:49:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 969 transitions. [2022-11-25 16:49:42,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46879535558780844 [2022-11-25 16:49:42,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 969 transitions. [2022-11-25 16:49:42,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 969 transitions. [2022-11-25 16:49:42,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:42,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 969 transitions. [2022-11-25 16:49:42,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:42,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:42,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:42,985 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 204 flow. Second operand 3 states and 969 transitions. [2022-11-25 16:49:42,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 73 transitions, 408 flow [2022-11-25 16:49:42,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 73 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:49:42,988 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 211 flow [2022-11-25 16:49:42,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2022-11-25 16:49:42,990 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2022-11-25 16:49:42,990 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 211 flow [2022-11-25 16:49:42,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:42,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:42,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:49:42,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:49:42,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:42,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash -553753028, now seen corresponding path program 1 times [2022-11-25 16:49:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:42,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67060899] [2022-11-25 16:49:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:42,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:43,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:43,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67060899] [2022-11-25 16:49:43,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67060899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:43,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:43,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:49:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716894937] [2022-11-25 16:49:43,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:43,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:49:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:49:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:49:43,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 689 [2022-11-25 16:49:43,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 290.4) internal successors, (1452), 5 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:43,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:43,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 689 [2022-11-25 16:49:43,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:45,476 INFO L130 PetriNetUnfolder]: 6624/10935 cut-off events. [2022-11-25 16:49:45,476 INFO L131 PetriNetUnfolder]: For 1421/1421 co-relation queries the response was YES. [2022-11-25 16:49:45,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24051 conditions, 10935 events. 6624/10935 cut-off events. For 1421/1421 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 76225 event pairs, 5410 based on Foata normal form. 92/6011 useless extension candidates. Maximal degree in co-relation 14219. Up to 8873 conditions per place. [2022-11-25 16:49:45,552 INFO L137 encePairwiseOnDemand]: 684/689 looper letters, 69 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2022-11-25 16:49:45,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 441 flow [2022-11-25 16:49:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:49:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:49:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1509 transitions. [2022-11-25 16:49:45,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43802612481857767 [2022-11-25 16:49:45,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1509 transitions. [2022-11-25 16:49:45,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1509 transitions. [2022-11-25 16:49:45,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:45,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1509 transitions. [2022-11-25 16:49:45,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.8) internal successors, (1509), 5 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:45,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 689.0) internal successors, (4134), 6 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:45,577 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 689.0) internal successors, (4134), 6 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:45,578 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 211 flow. Second operand 5 states and 1509 transitions. [2022-11-25 16:49:45,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 441 flow [2022-11-25 16:49:45,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:49:45,585 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 244 flow [2022-11-25 16:49:45,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2022-11-25 16:49:45,586 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2022-11-25 16:49:45,587 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 244 flow [2022-11-25 16:49:45,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 290.4) internal successors, (1452), 5 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:45,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:45,588 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-11-25 16:49:45,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:49:45,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash -520672830, now seen corresponding path program 1 times [2022-11-25 16:49:45,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:45,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685587549] [2022-11-25 16:49:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:45,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:45,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685587549] [2022-11-25 16:49:45,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685587549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:49:45,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557219743] [2022-11-25 16:49:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:45,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:45,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:45,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:49:45,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:49:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:45,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:49:45,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:49:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:45,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:49:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:45,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557219743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:49:45,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:49:45,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 16:49:45,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071388592] [2022-11-25 16:49:45,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:49:45,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:49:45,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:49:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:49:46,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 689 [2022-11-25 16:49:46,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 244 flow. Second operand has 13 states, 13 states have (on average 300.15384615384613) internal successors, (3902), 13 states have internal predecessors, (3902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:46,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:46,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 689 [2022-11-25 16:49:46,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:50,275 INFO L130 PetriNetUnfolder]: 14712/24249 cut-off events. [2022-11-25 16:49:50,275 INFO L131 PetriNetUnfolder]: For 4064/4064 co-relation queries the response was YES. [2022-11-25 16:49:50,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53985 conditions, 24249 events. 14712/24249 cut-off events. For 4064/4064 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 182155 event pairs, 11980 based on Foata normal form. 12/13197 useless extension candidates. Maximal degree in co-relation 43938. Up to 3906 conditions per place. [2022-11-25 16:49:50,463 INFO L137 encePairwiseOnDemand]: 684/689 looper letters, 343 selfloop transitions, 32 changer transitions 0/375 dead transitions. [2022-11-25 16:49:50,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 375 transitions, 1979 flow [2022-11-25 16:49:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:49:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:49:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3947 transitions. [2022-11-25 16:49:50,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4773826802128689 [2022-11-25 16:49:50,482 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3947 transitions. [2022-11-25 16:49:50,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3947 transitions. [2022-11-25 16:49:50,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:50,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3947 transitions. [2022-11-25 16:49:50,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 328.9166666666667) internal successors, (3947), 12 states have internal predecessors, (3947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:50,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 689.0) internal successors, (8957), 13 states have internal predecessors, (8957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:50,520 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 689.0) internal successors, (8957), 13 states have internal predecessors, (8957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:50,520 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 244 flow. Second operand 12 states and 3947 transitions. [2022-11-25 16:49:50,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 375 transitions, 1979 flow [2022-11-25 16:49:50,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 375 transitions, 1946 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-25 16:49:50,549 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 453 flow [2022-11-25 16:49:50,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=453, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2022-11-25 16:49:50,550 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 25 predicate places. [2022-11-25 16:49:50,550 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 453 flow [2022-11-25 16:49:50,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 300.15384615384613) internal successors, (3902), 13 states have internal predecessors, (3902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:50,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:50,552 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:49:50,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:49:50,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 16:49:50,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:50,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash -136760695, now seen corresponding path program 1 times [2022-11-25 16:49:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:50,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379766417] [2022-11-25 16:49:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:51,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:51,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379766417] [2022-11-25 16:49:51,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379766417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:49:51,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302279280] [2022-11-25 16:49:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:51,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:51,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:51,003 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:49:51,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:49:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:51,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:49:51,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:49:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:49:51,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:49:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:49:51,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302279280] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 16:49:51,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:49:51,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 2] total 9 [2022-11-25 16:49:51,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673828626] [2022-11-25 16:49:51,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:51,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:49:51,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:51,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:49:51,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:49:51,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 689 [2022-11-25 16:49:51,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 286.25) internal successors, (1145), 4 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:51,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:51,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 689 [2022-11-25 16:49:51,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:55,274 INFO L130 PetriNetUnfolder]: 13542/22619 cut-off events. [2022-11-25 16:49:55,274 INFO L131 PetriNetUnfolder]: For 4000/4000 co-relation queries the response was YES. [2022-11-25 16:49:55,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48395 conditions, 22619 events. 13542/22619 cut-off events. For 4000/4000 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 171212 event pairs, 11330 based on Foata normal form. 920/12715 useless extension candidates. Maximal degree in co-relation 44002. Up to 22619 conditions per place. [2022-11-25 16:49:55,458 INFO L137 encePairwiseOnDemand]: 687/689 looper letters, 65 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2022-11-25 16:49:55,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 572 flow [2022-11-25 16:49:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:49:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 886 transitions. [2022-11-25 16:49:55,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42864054184808903 [2022-11-25 16:49:55,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 886 transitions. [2022-11-25 16:49:55,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 886 transitions. [2022-11-25 16:49:55,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:55,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 886 transitions. [2022-11-25 16:49:55,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:55,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:55,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:55,472 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 453 flow. Second operand 3 states and 886 transitions. [2022-11-25 16:49:55,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 572 flow [2022-11-25 16:49:55,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 475 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-11-25 16:49:55,481 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 345 flow [2022-11-25 16:49:55,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2022-11-25 16:49:55,482 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2022-11-25 16:49:55,483 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 345 flow [2022-11-25 16:49:55,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.25) internal successors, (1145), 4 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:55,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:55,484 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:49:55,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 16:49:55,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:55,691 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:49:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash 13526563, now seen corresponding path program 1 times [2022-11-25 16:49:55,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:55,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609231943] [2022-11-25 16:49:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:55,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609231943] [2022-11-25 16:49:55,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609231943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:55,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:55,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:49:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281220957] [2022-11-25 16:49:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:55,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:55,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:55,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 689 [2022-11-25 16:49:55,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:55,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:55,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 689 [2022-11-25 16:49:55,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:50:01,908 INFO L130 PetriNetUnfolder]: 22914/38063 cut-off events. [2022-11-25 16:50:01,908 INFO L131 PetriNetUnfolder]: For 2480/2480 co-relation queries the response was YES. [2022-11-25 16:50:02,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80538 conditions, 38063 events. 22914/38063 cut-off events. For 2480/2480 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 315804 event pairs, 11330 based on Foata normal form. 0/19011 useless extension candidates. Maximal degree in co-relation 80517. Up to 22620 conditions per place. [2022-11-25 16:50:02,190 INFO L137 encePairwiseOnDemand]: 686/689 looper letters, 87 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-11-25 16:50:02,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 580 flow [2022-11-25 16:50:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:50:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:50:02,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 965 transitions. [2022-11-25 16:50:02,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4668601838413159 [2022-11-25 16:50:02,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 965 transitions. [2022-11-25 16:50:02,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 965 transitions. [2022-11-25 16:50:02,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:50:02,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 965 transitions. [2022-11-25 16:50:02,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:02,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:02,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:02,203 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 345 flow. Second operand 3 states and 965 transitions. [2022-11-25 16:50:02,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 580 flow [2022-11-25 16:50:02,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:50:02,214 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 356 flow [2022-11-25 16:50:02,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2022-11-25 16:50:02,215 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2022-11-25 16:50:02,215 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 356 flow [2022-11-25 16:50:02,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:02,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:02,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:02,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:50:02,217 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:50:02,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash 13526626, now seen corresponding path program 1 times [2022-11-25 16:50:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:02,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289245901] [2022-11-25 16:50:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:50:02,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:02,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289245901] [2022-11-25 16:50:02,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289245901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:02,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:02,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:50:02,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333006864] [2022-11-25 16:50:02,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:02,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:50:02,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:02,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:50:02,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:50:02,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 689 [2022-11-25 16:50:02,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 356 flow. Second operand has 5 states, 5 states have (on average 293.6) internal successors, (1468), 5 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:02,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:50:02,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 689 [2022-11-25 16:50:02,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:50:06,579 INFO L130 PetriNetUnfolder]: 13817/23400 cut-off events. [2022-11-25 16:50:06,579 INFO L131 PetriNetUnfolder]: For 5065/5065 co-relation queries the response was YES. [2022-11-25 16:50:06,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53039 conditions, 23400 events. 13817/23400 cut-off events. For 5065/5065 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 182519 event pairs, 10615 based on Foata normal form. 506/14336 useless extension candidates. Maximal degree in co-relation 53017. Up to 19042 conditions per place. [2022-11-25 16:50:06,722 INFO L137 encePairwiseOnDemand]: 679/689 looper letters, 136 selfloop transitions, 6 changer transitions 16/158 dead transitions. [2022-11-25 16:50:06,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 158 transitions, 974 flow [2022-11-25 16:50:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:50:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:50:06,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2168 transitions. [2022-11-25 16:50:06,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44951275139954383 [2022-11-25 16:50:06,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2168 transitions. [2022-11-25 16:50:06,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2168 transitions. [2022-11-25 16:50:06,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:50:06,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2168 transitions. [2022-11-25 16:50:06,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 309.7142857142857) internal successors, (2168), 7 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:06,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 689.0) internal successors, (5512), 8 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:06,747 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 689.0) internal successors, (5512), 8 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:06,747 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 356 flow. Second operand 7 states and 2168 transitions. [2022-11-25 16:50:06,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 158 transitions, 974 flow [2022-11-25 16:50:06,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 158 transitions, 970 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:50:06,838 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 398 flow [2022-11-25 16:50:06,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2022-11-25 16:50:06,839 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 27 predicate places. [2022-11-25 16:50:06,839 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 398 flow [2022-11-25 16:50:06,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 293.6) internal successors, (1468), 5 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:06,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:06,840 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:06,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 16:50:06,841 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:50:06,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1129168642, now seen corresponding path program 1 times [2022-11-25 16:50:06,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:06,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106623429] [2022-11-25 16:50:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:06,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:50:07,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:07,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106623429] [2022-11-25 16:50:07,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106623429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:07,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:07,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:50:07,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074944455] [2022-11-25 16:50:07,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:07,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:50:07,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:07,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:50:07,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:50:07,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 689 [2022-11-25 16:50:07,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 293.8) internal successors, (1469), 5 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:07,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:50:07,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 689 [2022-11-25 16:50:07,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:50:11,165 INFO L130 PetriNetUnfolder]: 12990/22067 cut-off events. [2022-11-25 16:50:11,166 INFO L131 PetriNetUnfolder]: For 9714/9714 co-relation queries the response was YES. [2022-11-25 16:50:11,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58917 conditions, 22067 events. 12990/22067 cut-off events. For 9714/9714 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 170690 event pairs, 11070 based on Foata normal form. 92/14187 useless extension candidates. Maximal degree in co-relation 58892. Up to 21267 conditions per place. [2022-11-25 16:50:11,325 INFO L137 encePairwiseOnDemand]: 680/689 looper letters, 84 selfloop transitions, 16 changer transitions 8/108 dead transitions. [2022-11-25 16:50:11,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 108 transitions, 721 flow [2022-11-25 16:50:11,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:50:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:50:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1537 transitions. [2022-11-25 16:50:11,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2022-11-25 16:50:11,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1537 transitions. [2022-11-25 16:50:11,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1537 transitions. [2022-11-25 16:50:11,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:50:11,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1537 transitions. [2022-11-25 16:50:11,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:11,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 689.0) internal successors, (4134), 6 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:11,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 689.0) internal successors, (4134), 6 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:11,344 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 398 flow. Second operand 5 states and 1537 transitions. [2022-11-25 16:50:11,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 108 transitions, 721 flow [2022-11-25 16:50:11,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 108 transitions, 716 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:50:11,524 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 448 flow [2022-11-25 16:50:11,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2022-11-25 16:50:11,526 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2022-11-25 16:50:11,526 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 448 flow [2022-11-25 16:50:11,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 293.8) internal successors, (1469), 5 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:11,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:11,527 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:11,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 16:50:11,528 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:50:11,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash 380205157, now seen corresponding path program 1 times [2022-11-25 16:50:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:11,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294959789] [2022-11-25 16:50:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:11,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:50:11,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:11,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294959789] [2022-11-25 16:50:11,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294959789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:11,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:11,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:50:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58394113] [2022-11-25 16:50:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:11,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:50:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:50:11,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:50:11,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 689 [2022-11-25 16:50:11,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:11,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:50:11,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 689 [2022-11-25 16:50:11,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:50:15,602 INFO L130 PetriNetUnfolder]: 12442/21123 cut-off events. [2022-11-25 16:50:15,602 INFO L131 PetriNetUnfolder]: For 16600/16600 co-relation queries the response was YES. [2022-11-25 16:50:15,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60673 conditions, 21123 events. 12442/21123 cut-off events. For 16600/16600 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 172741 event pairs, 154 based on Foata normal form. 0/13687 useless extension candidates. Maximal degree in co-relation 60646. Up to 20484 conditions per place. [2022-11-25 16:50:15,774 INFO L137 encePairwiseOnDemand]: 687/689 looper letters, 83 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2022-11-25 16:50:15,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 708 flow [2022-11-25 16:50:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:50:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:50:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2022-11-25 16:50:15,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4610546686018384 [2022-11-25 16:50:15,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2022-11-25 16:50:15,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2022-11-25 16:50:15,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:50:15,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2022-11-25 16:50:15,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:15,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:15,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:15,786 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 448 flow. Second operand 3 states and 953 transitions. [2022-11-25 16:50:15,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 708 flow [2022-11-25 16:50:15,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 84 transitions, 659 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-11-25 16:50:15,874 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 408 flow [2022-11-25 16:50:15,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2022-11-25 16:50:15,876 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2022-11-25 16:50:15,876 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 408 flow [2022-11-25 16:50:15,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:15,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:15,877 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:15,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 16:50:15,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:50:15,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:15,878 INFO L85 PathProgramCache]: Analyzing trace with hash 380205156, now seen corresponding path program 1 times [2022-11-25 16:50:15,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:15,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532600984] [2022-11-25 16:50:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:15,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:50:15,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:15,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532600984] [2022-11-25 16:50:15,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532600984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:15,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:15,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:50:15,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966832718] [2022-11-25 16:50:15,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:15,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:50:15,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:15,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:50:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:50:16,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 689 [2022-11-25 16:50:16,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 408 flow. Second operand has 5 states, 5 states have (on average 293.8) internal successors, (1469), 5 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:16,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:50:16,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 689 [2022-11-25 16:50:16,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:50:19,674 INFO L130 PetriNetUnfolder]: 10451/17570 cut-off events. [2022-11-25 16:50:19,674 INFO L131 PetriNetUnfolder]: For 9121/9121 co-relation queries the response was YES. [2022-11-25 16:50:19,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48487 conditions, 17570 events. 10451/17570 cut-off events. For 9121/9121 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 129304 event pairs, 8833 based on Foata normal form. 0/11102 useless extension candidates. Maximal degree in co-relation 48461. Up to 16952 conditions per place. [2022-11-25 16:50:19,795 INFO L137 encePairwiseOnDemand]: 684/689 looper letters, 75 selfloop transitions, 3 changer transitions 19/97 dead transitions. [2022-11-25 16:50:19,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 747 flow [2022-11-25 16:50:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:50:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:50:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1513 transitions. [2022-11-25 16:50:19,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43918722786647313 [2022-11-25 16:50:19,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1513 transitions. [2022-11-25 16:50:19,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1513 transitions. [2022-11-25 16:50:19,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:50:19,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1513 transitions. [2022-11-25 16:50:19,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.6) internal successors, (1513), 5 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:19,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 689.0) internal successors, (4134), 6 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:19,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 689.0) internal successors, (4134), 6 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:19,809 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 408 flow. Second operand 5 states and 1513 transitions. [2022-11-25 16:50:19,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 747 flow [2022-11-25 16:50:19,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 97 transitions, 745 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:50:19,898 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 401 flow [2022-11-25 16:50:19,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2022-11-25 16:50:19,899 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 34 predicate places. [2022-11-25 16:50:19,899 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 401 flow [2022-11-25 16:50:19,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 293.8) internal successors, (1469), 5 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:19,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:19,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:19,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 16:50:19,900 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-25 16:50:19,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash 55387061, now seen corresponding path program 1 times [2022-11-25 16:50:19,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:19,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34399846] [2022-11-25 16:50:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:19,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:50:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:20,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34399846] [2022-11-25 16:50:20,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34399846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:20,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77242873] [2022-11-25 16:50:20,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:20,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:20,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:20,562 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:20,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da587b4-16ba-44cf-8518-dba51a7299d5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 16:50:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:20,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 16:50:20,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:20,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 16:50:20,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:50:20,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 16:50:20,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:50:20,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 16:50:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:50:20,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:22,122 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_380 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int) (v_ArrVal_379 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_379) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_380))) (let ((.cse0 (select (select .cse1 ~a1~0.base) ~a1~0.offset))) (or (not (<= .cse0 9223372039002259455)) (<= (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ 2147483647 .cse0)) (not (<= 0 .cse0)))))) is different from false [2022-11-25 16:50:22,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:50:22,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 66 [2022-11-25 16:50:22,341 INFO L321 Elim1Store]: treesize reduction 4, result has 89.2 percent of original size [2022-11-25 16:50:22,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 433 treesize of output 417 [2022-11-25 16:50:22,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:50:22,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 382 treesize of output 350 [2022-11-25 16:50:22,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:50:22,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 342 treesize of output 330