./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN --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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- 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-6b4ec56 [2022-11-20 12:34:49,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:34:49,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:34:49,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:34:49,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:34:49,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:34:49,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:34:49,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:34:49,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:34:49,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:34:49,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:34:49,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:34:49,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:34:49,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:34:49,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:34:49,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:34:49,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:34:50,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:34:50,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:34:50,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:34:50,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:34:50,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:34:50,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:34:50,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:34:50,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:34:50,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:34:50,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:34:50,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:34:50,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:34:50,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:34:50,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:34:50,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:34:50,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:34:50,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:34:50,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:34:50,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:34:50,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:34:50,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:34:50,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:34:50,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:34:50,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:34:50,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:34:50,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:34:50,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:34:50,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:34:50,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:34:50,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:34:50,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:34:50,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:34:50,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:34:50,065 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:34:50,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:34:50,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:34:50,066 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:34:50,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:34:50,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:34:50,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:34:50,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:34:50,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:34:50,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:34:50,067 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:34:50,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:34:50,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:34:50,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:34:50,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:34:50,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:34:50,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:34:50,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:34:50,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:34:50,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:34:50,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:34:50,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:34:50,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:34:50,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:34:50,071 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:34:50,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:34:50,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:34:50,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2022-11-20 12:34:50,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:34:50,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:34:50,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:34:50,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:34:50,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:34:50,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-11-20 12:34:53,853 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:34:54,111 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:34:54,117 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-11-20 12:34:54,125 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/data/b3700fa43/b8946c71393f4608a94fb38b66332008/FLAG373c629c3 [2022-11-20 12:34:54,140 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/data/b3700fa43/b8946c71393f4608a94fb38b66332008 [2022-11-20 12:34:54,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:34:54,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:34:54,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:34:54,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:34:54,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:34:54,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50dd0158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54, skipping insertion in model container [2022-11-20 12:34:54,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:34:54,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:34:54,456 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_bf77e712-a0f6-4bb7-9110-0c9c812543cd/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-11-20 12:34:54,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:34:54,484 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:34:54,520 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_bf77e712-a0f6-4bb7-9110-0c9c812543cd/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-11-20 12:34:54,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:34:54,539 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:34:54,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54 WrapperNode [2022-11-20 12:34:54,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:34:54,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:34:54,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:34:54,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:34:54,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,601 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 184 [2022-11-20 12:34:54,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:34:54,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:34:54,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:34:54,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:34:54,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:34:54,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:34:54,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:34:54,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:34:54,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (1/1) ... [2022-11-20 12:34:54,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:34:54,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:54,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:34:54,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:34:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:34:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:34:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:34:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:34:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:34:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:34:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:34:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:34:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:34:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:34:54,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:34:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:34:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:34:54,736 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:34:54,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:34:54,882 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:34:55,375 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:34:55,387 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:34:55,387 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 12:34:55,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:55 BoogieIcfgContainer [2022-11-20 12:34:55,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:34:55,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:34:55,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:34:55,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:34:55,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:34:54" (1/3) ... [2022-11-20 12:34:55,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30eb2c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:34:55, skipping insertion in model container [2022-11-20 12:34:55,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:54" (2/3) ... [2022-11-20 12:34:55,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30eb2c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:34:55, skipping insertion in model container [2022-11-20 12:34:55,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:55" (3/3) ... [2022-11-20 12:34:55,401 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2022-11-20 12:34:55,412 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:34:55,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:34:55,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 12:34:55,422 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:34:55,556 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:34:55,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 231 transitions, 478 flow [2022-11-20 12:34:55,720 INFO L130 PetriNetUnfolder]: 19/229 cut-off events. [2022-11-20 12:34:55,721 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:34:55,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 229 events. 19/229 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 262 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-11-20 12:34:55,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 231 transitions, 478 flow [2022-11-20 12:34:55,738 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 211 transitions, 434 flow [2022-11-20 12:34:55,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:34:55,760 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;@132f291f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:34:55,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-20 12:34:55,782 INFO L130 PetriNetUnfolder]: 3/57 cut-off events. [2022-11-20 12:34:55,782 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:34:55,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:55,783 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:55,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:34:55,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash 791416842, now seen corresponding path program 1 times [2022-11-20 12:34:55,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:55,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583764773] [2022-11-20 12:34:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:55,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:56,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583764773] [2022-11-20 12:34:56,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583764773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:56,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:56,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:56,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893868154] [2022-11-20 12:34:56,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:56,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:56,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:56,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:56,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2022-11-20 12:34:56,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 211 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:56,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:56,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2022-11-20 12:34:56,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:56,802 INFO L130 PetriNetUnfolder]: 15/336 cut-off events. [2022-11-20 12:34:56,803 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-11-20 12:34:56,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 336 events. 15/336 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 872 event pairs, 0 based on Foata normal form. 16/314 useless extension candidates. Maximal degree in co-relation 285. Up to 30 conditions per place. [2022-11-20 12:34:56,811 INFO L137 encePairwiseOnDemand]: 208/231 looper letters, 40 selfloop transitions, 9 changer transitions 4/222 dead transitions. [2022-11-20 12:34:56,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 222 transitions, 566 flow [2022-11-20 12:34:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:34:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:34:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1024 transitions. [2022-11-20 12:34:56,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8865800865800866 [2022-11-20 12:34:56,848 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1024 transitions. [2022-11-20 12:34:56,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1024 transitions. [2022-11-20 12:34:56,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:56,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1024 transitions. [2022-11-20 12:34:56,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.8) internal successors, (1024), 5 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:56,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:56,881 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:56,884 INFO L175 Difference]: Start difference. First operand has 200 places, 211 transitions, 434 flow. Second operand 5 states and 1024 transitions. [2022-11-20 12:34:56,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 222 transitions, 566 flow [2022-11-20 12:34:56,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 222 transitions, 550 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:56,907 INFO L231 Difference]: Finished difference. Result has 203 places, 204 transitions, 465 flow [2022-11-20 12:34:56,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=203, PETRI_TRANSITIONS=204} [2022-11-20 12:34:56,918 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 3 predicate places. [2022-11-20 12:34:56,918 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 204 transitions, 465 flow [2022-11-20 12:34:56,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:56,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:56,923 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:56,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:34:56,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:34:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1751978266, now seen corresponding path program 1 times [2022-11-20 12:34:56,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:56,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400691033] [2022-11-20 12:34:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:56,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:57,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:57,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400691033] [2022-11-20 12:34:57,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400691033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:57,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284072677] [2022-11-20 12:34:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:57,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:57,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:57,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:57,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:34:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:57,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:34:57,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:57,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:57,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284072677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:57,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:34:57,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:34:57,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261159537] [2022-11-20 12:34:57,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:57,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:34:57,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:57,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:34:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:34:57,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2022-11-20 12:34:57,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 204 transitions, 465 flow. Second operand has 12 states, 12 states have (on average 193.66666666666666) internal successors, (2324), 12 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:57,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:57,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2022-11-20 12:34:57,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:58,282 INFO L130 PetriNetUnfolder]: 36/741 cut-off events. [2022-11-20 12:34:58,286 INFO L131 PetriNetUnfolder]: For 37/42 co-relation queries the response was YES. [2022-11-20 12:34:58,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 741 events. 36/741 cut-off events. For 37/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3342 event pairs, 0 based on Foata normal form. 6/672 useless extension candidates. Maximal degree in co-relation 544. Up to 23 conditions per place. [2022-11-20 12:34:58,300 INFO L137 encePairwiseOnDemand]: 216/231 looper letters, 76 selfloop transitions, 40 changer transitions 0/285 dead transitions. [2022-11-20 12:34:58,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 285 transitions, 925 flow [2022-11-20 12:34:58,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:34:58,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:34:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3560 transitions. [2022-11-20 12:34:58,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8561808561808562 [2022-11-20 12:34:58,309 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3560 transitions. [2022-11-20 12:34:58,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3560 transitions. [2022-11-20 12:34:58,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:58,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3560 transitions. [2022-11-20 12:34:58,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 197.77777777777777) internal successors, (3560), 18 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:58,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:58,334 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:58,334 INFO L175 Difference]: Start difference. First operand has 203 places, 204 transitions, 465 flow. Second operand 18 states and 3560 transitions. [2022-11-20 12:34:58,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 285 transitions, 925 flow [2022-11-20 12:34:58,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 285 transitions, 920 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:34:58,349 INFO L231 Difference]: Finished difference. Result has 219 places, 231 transitions, 698 flow [2022-11-20 12:34:58,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=698, PETRI_PLACES=219, PETRI_TRANSITIONS=231} [2022-11-20 12:34:58,350 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 19 predicate places. [2022-11-20 12:34:58,351 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 231 transitions, 698 flow [2022-11-20 12:34:58,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 193.66666666666666) internal successors, (2324), 12 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:58,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:58,354 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:58,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:58,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:58,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:34:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:58,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1523249015, now seen corresponding path program 1 times [2022-11-20 12:34:58,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:58,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588878187] [2022-11-20 12:34:58,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:58,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:58,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:58,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588878187] [2022-11-20 12:34:58,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588878187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:58,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234161721] [2022-11-20 12:34:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:58,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:58,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:58,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:58,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:34:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:58,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:34:58,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:58,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:58,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234161721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:58,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:34:58,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:34:58,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642263260] [2022-11-20 12:34:58,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:58,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:58,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:58,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:58,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:58,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2022-11-20 12:34:58,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 231 transitions, 698 flow. Second operand has 6 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:58,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:58,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2022-11-20 12:34:58,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:59,293 INFO L130 PetriNetUnfolder]: 36/733 cut-off events. [2022-11-20 12:34:59,293 INFO L131 PetriNetUnfolder]: For 131/136 co-relation queries the response was YES. [2022-11-20 12:34:59,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 733 events. 36/733 cut-off events. For 131/136 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3314 event pairs, 0 based on Foata normal form. 8/666 useless extension candidates. Maximal degree in co-relation 737. Up to 48 conditions per place. [2022-11-20 12:34:59,299 INFO L137 encePairwiseOnDemand]: 220/231 looper letters, 41 selfloop transitions, 27 changer transitions 0/237 dead transitions. [2022-11-20 12:34:59,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 237 transitions, 816 flow [2022-11-20 12:34:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:59,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:34:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1386 transitions. [2022-11-20 12:34:59,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-20 12:34:59,304 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1386 transitions. [2022-11-20 12:34:59,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1386 transitions. [2022-11-20 12:34:59,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:59,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1386 transitions. [2022-11-20 12:34:59,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:59,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:59,313 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:59,313 INFO L175 Difference]: Start difference. First operand has 219 places, 231 transitions, 698 flow. Second operand 7 states and 1386 transitions. [2022-11-20 12:34:59,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 237 transitions, 816 flow [2022-11-20 12:34:59,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 237 transitions, 742 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 12:34:59,322 INFO L231 Difference]: Finished difference. Result has 214 places, 223 transitions, 624 flow [2022-11-20 12:34:59,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=214, PETRI_TRANSITIONS=223} [2022-11-20 12:34:59,324 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 14 predicate places. [2022-11-20 12:34:59,324 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 223 transitions, 624 flow [2022-11-20 12:34:59,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:59,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:59,325 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:59,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:59,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:59,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:34:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2065374986, now seen corresponding path program 2 times [2022-11-20 12:34:59,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:59,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393076172] [2022-11-20 12:34:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:59,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:59,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:59,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393076172] [2022-11-20 12:34:59,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393076172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:59,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225922928] [2022-11-20 12:34:59,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:34:59,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:59,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:59,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:59,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:34:59,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:34:59,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:34:59,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:35:00,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:35:00,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:35:00,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225922928] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:00,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:00,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-20 12:35:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329645369] [2022-11-20 12:35:00,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:35:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:35:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:35:00,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 231 [2022-11-20 12:35:00,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 223 transitions, 624 flow. Second operand has 18 states, 18 states have (on average 185.0) internal successors, (3330), 18 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:00,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:00,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 231 [2022-11-20 12:35:00,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:01,092 INFO L130 PetriNetUnfolder]: 43/852 cut-off events. [2022-11-20 12:35:01,092 INFO L131 PetriNetUnfolder]: For 120/126 co-relation queries the response was YES. [2022-11-20 12:35:01,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 852 events. 43/852 cut-off events. For 120/126 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4060 event pairs, 0 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 744. Up to 15 conditions per place. [2022-11-20 12:35:01,098 INFO L137 encePairwiseOnDemand]: 215/231 looper letters, 89 selfloop transitions, 43 changer transitions 0/291 dead transitions. [2022-11-20 12:35:01,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 291 transitions, 1054 flow [2022-11-20 12:35:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:35:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:35:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3754 transitions. [2022-11-20 12:35:01,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125541125541126 [2022-11-20 12:35:01,108 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3754 transitions. [2022-11-20 12:35:01,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3754 transitions. [2022-11-20 12:35:01,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:01,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3754 transitions. [2022-11-20 12:35:01,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 187.7) internal successors, (3754), 20 states have internal predecessors, (3754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 231.0) internal successors, (4851), 21 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,131 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 231.0) internal successors, (4851), 21 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,132 INFO L175 Difference]: Start difference. First operand has 214 places, 223 transitions, 624 flow. Second operand 20 states and 3754 transitions. [2022-11-20 12:35:01,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 291 transitions, 1054 flow [2022-11-20 12:35:01,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 291 transitions, 1001 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 12:35:01,140 INFO L231 Difference]: Finished difference. Result has 223 places, 226 transitions, 670 flow [2022-11-20 12:35:01,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=670, PETRI_PLACES=223, PETRI_TRANSITIONS=226} [2022-11-20 12:35:01,142 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 23 predicate places. [2022-11-20 12:35:01,142 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 226 transitions, 670 flow [2022-11-20 12:35:01,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 185.0) internal successors, (3330), 18 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:01,147 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:01,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:01,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:01,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash 869914162, now seen corresponding path program 1 times [2022-11-20 12:35:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:01,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202759218] [2022-11-20 12:35:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:01,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:01,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202759218] [2022-11-20 12:35:01,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202759218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:01,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:01,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:35:01,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705076080] [2022-11-20 12:35:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:01,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:35:01,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:01,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:35:01,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:35:01,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 231 [2022-11-20 12:35:01,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 226 transitions, 670 flow. Second operand has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:01,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 231 [2022-11-20 12:35:01,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:01,730 INFO L130 PetriNetUnfolder]: 115/1302 cut-off events. [2022-11-20 12:35:01,730 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-11-20 12:35:01,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 1302 events. 115/1302 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8317 event pairs, 36 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 418. Up to 145 conditions per place. [2022-11-20 12:35:01,739 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 18 selfloop transitions, 3 changer transitions 0/235 dead transitions. [2022-11-20 12:35:01,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 235 transitions, 735 flow [2022-11-20 12:35:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1057 transitions. [2022-11-20 12:35:01,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9151515151515152 [2022-11-20 12:35:01,742 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1057 transitions. [2022-11-20 12:35:01,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1057 transitions. [2022-11-20 12:35:01,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:01,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1057 transitions. [2022-11-20 12:35:01,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.4) internal successors, (1057), 5 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,749 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,749 INFO L175 Difference]: Start difference. First operand has 223 places, 226 transitions, 670 flow. Second operand 5 states and 1057 transitions. [2022-11-20 12:35:01,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 235 transitions, 735 flow [2022-11-20 12:35:01,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 235 transitions, 642 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-20 12:35:01,755 INFO L231 Difference]: Finished difference. Result has 215 places, 228 transitions, 598 flow [2022-11-20 12:35:01,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=215, PETRI_TRANSITIONS=228} [2022-11-20 12:35:01,756 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 15 predicate places. [2022-11-20 12:35:01,757 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 228 transitions, 598 flow [2022-11-20 12:35:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:01,758 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:01,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:35:01,758 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:01,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash 772315984, now seen corresponding path program 1 times [2022-11-20 12:35:01,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:01,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992088937] [2022-11-20 12:35:01,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:01,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:01,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:01,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992088937] [2022-11-20 12:35:01,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992088937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:01,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:01,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:01,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950478965] [2022-11-20 12:35:01,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:01,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:35:01,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:01,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:35:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:35:01,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-20 12:35:01,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 228 transitions, 598 flow. Second operand has 4 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:01,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:01,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-20 12:35:01,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:02,376 INFO L130 PetriNetUnfolder]: 259/2574 cut-off events. [2022-11-20 12:35:02,376 INFO L131 PetriNetUnfolder]: For 104/110 co-relation queries the response was YES. [2022-11-20 12:35:02,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3507 conditions, 2574 events. 259/2574 cut-off events. For 104/110 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 21222 event pairs, 36 based on Foata normal form. 0/2322 useless extension candidates. Maximal degree in co-relation 2995. Up to 283 conditions per place. [2022-11-20 12:35:02,395 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 30 selfloop transitions, 4 changer transitions 0/244 dead transitions. [2022-11-20 12:35:02,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 244 transitions, 703 flow [2022-11-20 12:35:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1041 transitions. [2022-11-20 12:35:02,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9012987012987013 [2022-11-20 12:35:02,399 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1041 transitions. [2022-11-20 12:35:02,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1041 transitions. [2022-11-20 12:35:02,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:02,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1041 transitions. [2022-11-20 12:35:02,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,406 INFO L175 Difference]: Start difference. First operand has 215 places, 228 transitions, 598 flow. Second operand 5 states and 1041 transitions. [2022-11-20 12:35:02,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 244 transitions, 703 flow [2022-11-20 12:35:02,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 244 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:35:02,444 INFO L231 Difference]: Finished difference. Result has 221 places, 231 transitions, 627 flow [2022-11-20 12:35:02,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=221, PETRI_TRANSITIONS=231} [2022-11-20 12:35:02,445 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 21 predicate places. [2022-11-20 12:35:02,445 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 231 transitions, 627 flow [2022-11-20 12:35:02,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:02,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:02,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:35:02,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:02,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1663808692, now seen corresponding path program 1 times [2022-11-20 12:35:02,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:02,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650774672] [2022-11-20 12:35:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:02,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:02,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:02,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650774672] [2022-11-20 12:35:02,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650774672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:02,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:02,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:35:02,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864269889] [2022-11-20 12:35:02,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:02,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:35:02,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:02,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:35:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:35:02,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 231 [2022-11-20 12:35:02,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 231 transitions, 627 flow. Second operand has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:02,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 231 [2022-11-20 12:35:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:03,096 INFO L130 PetriNetUnfolder]: 349/2820 cut-off events. [2022-11-20 12:35:03,096 INFO L131 PetriNetUnfolder]: For 374/398 co-relation queries the response was YES. [2022-11-20 12:35:03,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3792 conditions, 2820 events. 349/2820 cut-off events. For 374/398 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 27398 event pairs, 144 based on Foata normal form. 0/2412 useless extension candidates. Maximal degree in co-relation 2287. Up to 415 conditions per place. [2022-11-20 12:35:03,111 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 17 selfloop transitions, 3 changer transitions 0/239 dead transitions. [2022-11-20 12:35:03,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 239 transitions, 687 flow [2022-11-20 12:35:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1056 transitions. [2022-11-20 12:35:03,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9142857142857143 [2022-11-20 12:35:03,115 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1056 transitions. [2022-11-20 12:35:03,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1056 transitions. [2022-11-20 12:35:03,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:03,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1056 transitions. [2022-11-20 12:35:03,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.2) internal successors, (1056), 5 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,121 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,121 INFO L175 Difference]: Start difference. First operand has 221 places, 231 transitions, 627 flow. Second operand 5 states and 1056 transitions. [2022-11-20 12:35:03,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 239 transitions, 687 flow [2022-11-20 12:35:03,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 239 transitions, 685 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:35:03,127 INFO L231 Difference]: Finished difference. Result has 227 places, 233 transitions, 646 flow [2022-11-20 12:35:03,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=646, PETRI_PLACES=227, PETRI_TRANSITIONS=233} [2022-11-20 12:35:03,128 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 27 predicate places. [2022-11-20 12:35:03,129 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 233 transitions, 646 flow [2022-11-20 12:35:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:03,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:03,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:35:03,130 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash -799218126, now seen corresponding path program 1 times [2022-11-20 12:35:03,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:03,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544912960] [2022-11-20 12:35:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:03,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:03,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:03,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544912960] [2022-11-20 12:35:03,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544912960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:03,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:03,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:03,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848436942] [2022-11-20 12:35:03,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:03,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:35:03,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:03,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:35:03,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:35:03,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-20 12:35:03,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 233 transitions, 646 flow. Second operand has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:03,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-20 12:35:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:04,205 INFO L130 PetriNetUnfolder]: 691/4476 cut-off events. [2022-11-20 12:35:04,206 INFO L131 PetriNetUnfolder]: For 848/872 co-relation queries the response was YES. [2022-11-20 12:35:04,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 4476 events. 691/4476 cut-off events. For 848/872 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 50134 event pairs, 312 based on Foata normal form. 0/3744 useless extension candidates. Maximal degree in co-relation 5413. Up to 817 conditions per place. [2022-11-20 12:35:04,232 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 29 selfloop transitions, 4 changer transitions 0/248 dead transitions. [2022-11-20 12:35:04,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 248 transitions, 746 flow [2022-11-20 12:35:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:04,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1040 transitions. [2022-11-20 12:35:04,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9004329004329005 [2022-11-20 12:35:04,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1040 transitions. [2022-11-20 12:35:04,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1040 transitions. [2022-11-20 12:35:04,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:04,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1040 transitions. [2022-11-20 12:35:04,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,242 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,242 INFO L175 Difference]: Start difference. First operand has 227 places, 233 transitions, 646 flow. Second operand 5 states and 1040 transitions. [2022-11-20 12:35:04,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 248 transitions, 746 flow [2022-11-20 12:35:04,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 248 transitions, 745 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:35:04,252 INFO L231 Difference]: Finished difference. Result has 233 places, 236 transitions, 675 flow [2022-11-20 12:35:04,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=675, PETRI_PLACES=233, PETRI_TRANSITIONS=236} [2022-11-20 12:35:04,253 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 33 predicate places. [2022-11-20 12:35:04,254 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 236 transitions, 675 flow [2022-11-20 12:35:04,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:04,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:04,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:35:04,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:04,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:04,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1274513379, now seen corresponding path program 1 times [2022-11-20 12:35:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:04,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145193135] [2022-11-20 12:35:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:04,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:04,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145193135] [2022-11-20 12:35:04,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145193135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:04,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:04,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:35:04,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638548935] [2022-11-20 12:35:04,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:04,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:04,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:04,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:04,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 231 [2022-11-20 12:35:04,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 236 transitions, 675 flow. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:04,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 231 [2022-11-20 12:35:04,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:04,901 INFO L130 PetriNetUnfolder]: 127/2460 cut-off events. [2022-11-20 12:35:04,901 INFO L131 PetriNetUnfolder]: For 326/374 co-relation queries the response was YES. [2022-11-20 12:35:04,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 2460 events. 127/2460 cut-off events. For 326/374 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21667 event pairs, 0 based on Foata normal form. 48/2196 useless extension candidates. Maximal degree in co-relation 2402. Up to 601 conditions per place. [2022-11-20 12:35:04,924 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 8 selfloop transitions, 2 changer transitions 2/239 dead transitions. [2022-11-20 12:35:04,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 239 transitions, 707 flow [2022-11-20 12:35:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:35:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:35:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2022-11-20 12:35:04,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2022-11-20 12:35:04,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2022-11-20 12:35:04,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2022-11-20 12:35:04,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:04,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2022-11-20 12:35:04,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,933 INFO L175 Difference]: Start difference. First operand has 233 places, 236 transitions, 675 flow. Second operand 3 states and 638 transitions. [2022-11-20 12:35:04,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 239 transitions, 707 flow [2022-11-20 12:35:04,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 239 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:35:04,940 INFO L231 Difference]: Finished difference. Result has 235 places, 236 transitions, 683 flow [2022-11-20 12:35:04,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=683, PETRI_PLACES=235, PETRI_TRANSITIONS=236} [2022-11-20 12:35:04,942 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 35 predicate places. [2022-11-20 12:35:04,942 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 236 transitions, 683 flow [2022-11-20 12:35:04,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:04,944 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:04,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:35:04,944 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:04,945 INFO L85 PathProgramCache]: Analyzing trace with hash 657165209, now seen corresponding path program 1 times [2022-11-20 12:35:04,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:04,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080991879] [2022-11-20 12:35:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:04,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:35:05,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:05,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080991879] [2022-11-20 12:35:05,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080991879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:05,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:05,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:05,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606470443] [2022-11-20 12:35:05,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:05,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:35:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:35:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:35:05,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-20 12:35:05,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 236 transitions, 683 flow. Second operand has 4 states, 4 states have (on average 205.75) internal successors, (823), 4 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:05,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:05,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-20 12:35:05,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:05,993 INFO L130 PetriNetUnfolder]: 193/4458 cut-off events. [2022-11-20 12:35:05,993 INFO L131 PetriNetUnfolder]: For 405/1977 co-relation queries the response was YES. [2022-11-20 12:35:06,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6740 conditions, 4458 events. 193/4458 cut-off events. For 405/1977 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 46843 event pairs, 66 based on Foata normal form. 84/4290 useless extension candidates. Maximal degree in co-relation 5269. Up to 384 conditions per place. [2022-11-20 12:35:06,031 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 19 selfloop transitions, 8 changer transitions 0/242 dead transitions. [2022-11-20 12:35:06,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 242 transitions, 752 flow [2022-11-20 12:35:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1030 transitions. [2022-11-20 12:35:06,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8917748917748918 [2022-11-20 12:35:06,035 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1030 transitions. [2022-11-20 12:35:06,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1030 transitions. [2022-11-20 12:35:06,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:06,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1030 transitions. [2022-11-20 12:35:06,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,043 INFO L175 Difference]: Start difference. First operand has 235 places, 236 transitions, 683 flow. Second operand 5 states and 1030 transitions. [2022-11-20 12:35:06,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 242 transitions, 752 flow [2022-11-20 12:35:06,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 242 transitions, 748 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:35:06,061 INFO L231 Difference]: Finished difference. Result has 237 places, 236 transitions, 699 flow [2022-11-20 12:35:06,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=699, PETRI_PLACES=237, PETRI_TRANSITIONS=236} [2022-11-20 12:35:06,064 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 37 predicate places. [2022-11-20 12:35:06,065 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 236 transitions, 699 flow [2022-11-20 12:35:06,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.75) internal successors, (823), 4 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:06,066 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:06,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:35:06,066 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1102714395, now seen corresponding path program 1 times [2022-11-20 12:35:06,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:06,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908693832] [2022-11-20 12:35:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:06,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 12:35:06,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:06,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908693832] [2022-11-20 12:35:06,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908693832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:06,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:06,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:35:06,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844739002] [2022-11-20 12:35:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:06,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:35:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:06,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:35:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:35:06,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2022-11-20 12:35:06,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 236 transitions, 699 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:06,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2022-11-20 12:35:06,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:06,677 INFO L130 PetriNetUnfolder]: 21/1905 cut-off events. [2022-11-20 12:35:06,677 INFO L131 PetriNetUnfolder]: For 302/447 co-relation queries the response was YES. [2022-11-20 12:35:06,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 1905 events. 21/1905 cut-off events. For 302/447 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16319 event pairs, 0 based on Foata normal form. 2/1767 useless extension candidates. Maximal degree in co-relation 1986. Up to 244 conditions per place. [2022-11-20 12:35:06,691 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 42 selfloop transitions, 12 changer transitions 0/239 dead transitions. [2022-11-20 12:35:06,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 239 transitions, 814 flow [2022-11-20 12:35:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 993 transitions. [2022-11-20 12:35:06,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8597402597402597 [2022-11-20 12:35:06,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 993 transitions. [2022-11-20 12:35:06,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 993 transitions. [2022-11-20 12:35:06,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:06,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 993 transitions. [2022-11-20 12:35:06,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,700 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,701 INFO L175 Difference]: Start difference. First operand has 237 places, 236 transitions, 699 flow. Second operand 5 states and 993 transitions. [2022-11-20 12:35:06,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 239 transitions, 814 flow [2022-11-20 12:35:06,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 239 transitions, 802 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:35:06,707 INFO L231 Difference]: Finished difference. Result has 239 places, 235 transitions, 714 flow [2022-11-20 12:35:06,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=239, PETRI_TRANSITIONS=235} [2022-11-20 12:35:06,708 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 39 predicate places. [2022-11-20 12:35:06,708 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 235 transitions, 714 flow [2022-11-20 12:35:06,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:06,709 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:06,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:35:06,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:06,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:06,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1296404536, now seen corresponding path program 1 times [2022-11-20 12:35:06,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:06,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443580044] [2022-11-20 12:35:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:06,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:35:06,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:06,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443580044] [2022-11-20 12:35:06,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443580044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:06,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501591310] [2022-11-20 12:35:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:06,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:06,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:06,867 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:06,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:35:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:07,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:35:07,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:07,136 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:35:07,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:07,225 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:35:07,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501591310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:07,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:07,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 12:35:07,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799684867] [2022-11-20 12:35:07,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:35:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:07,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:35:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:35:07,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 231 [2022-11-20 12:35:07,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 235 transitions, 714 flow. Second operand has 15 states, 15 states have (on average 184.66666666666666) internal successors, (2770), 15 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:07,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 231 [2022-11-20 12:35:07,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:07,736 INFO L130 PetriNetUnfolder]: 13/1203 cut-off events. [2022-11-20 12:35:07,736 INFO L131 PetriNetUnfolder]: For 176/263 co-relation queries the response was YES. [2022-11-20 12:35:07,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 1203 events. 13/1203 cut-off events. For 176/263 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8362 event pairs, 0 based on Foata normal form. 4/1123 useless extension candidates. Maximal degree in co-relation 1548. Up to 140 conditions per place. [2022-11-20 12:35:07,745 INFO L137 encePairwiseOnDemand]: 215/231 looper letters, 52 selfloop transitions, 30 changer transitions 0/251 dead transitions. [2022-11-20 12:35:07,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 251 transitions, 920 flow [2022-11-20 12:35:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:35:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:35:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2059 transitions. [2022-11-20 12:35:07,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8103109012199922 [2022-11-20 12:35:07,750 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2059 transitions. [2022-11-20 12:35:07,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2059 transitions. [2022-11-20 12:35:07,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:07,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2059 transitions. [2022-11-20 12:35:07,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 187.1818181818182) internal successors, (2059), 11 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,761 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,762 INFO L175 Difference]: Start difference. First operand has 239 places, 235 transitions, 714 flow. Second operand 11 states and 2059 transitions. [2022-11-20 12:35:07,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 251 transitions, 920 flow [2022-11-20 12:35:07,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 251 transitions, 900 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:35:07,768 INFO L231 Difference]: Finished difference. Result has 248 places, 235 transitions, 793 flow [2022-11-20 12:35:07,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=793, PETRI_PLACES=248, PETRI_TRANSITIONS=235} [2022-11-20 12:35:07,769 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 48 predicate places. [2022-11-20 12:35:07,770 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 235 transitions, 793 flow [2022-11-20 12:35:07,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 184.66666666666666) internal successors, (2770), 15 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:07,771 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:07,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:07,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:07,983 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:07,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:07,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2097212776, now seen corresponding path program 2 times [2022-11-20 12:35:07,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:07,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154543357] [2022-11-20 12:35:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:07,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 12:35:08,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:08,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154543357] [2022-11-20 12:35:08,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154543357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:08,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332408545] [2022-11-20 12:35:08,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:08,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:08,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:08,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:08,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:35:08,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:35:08,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:08,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:35:08,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 12:35:08,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:08,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332408545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:08,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:35:08,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-11-20 12:35:08,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718350967] [2022-11-20 12:35:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:08,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:35:08,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:35:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:35:08,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-20 12:35:08,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 235 transitions, 793 flow. Second operand has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:08,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:08,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-20 12:35:08,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:08,875 INFO L130 PetriNetUnfolder]: 85/1515 cut-off events. [2022-11-20 12:35:08,875 INFO L131 PetriNetUnfolder]: For 265/847 co-relation queries the response was YES. [2022-11-20 12:35:08,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2465 conditions, 1515 events. 85/1515 cut-off events. For 265/847 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 11456 event pairs, 0 based on Foata normal form. 36/1458 useless extension candidates. Maximal degree in co-relation 1962. Up to 237 conditions per place. [2022-11-20 12:35:08,886 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 17 selfloop transitions, 5 changer transitions 0/236 dead transitions. [2022-11-20 12:35:08,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 236 transitions, 839 flow [2022-11-20 12:35:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:35:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:35:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 823 transitions. [2022-11-20 12:35:08,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8906926406926406 [2022-11-20 12:35:08,889 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 823 transitions. [2022-11-20 12:35:08,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 823 transitions. [2022-11-20 12:35:08,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:08,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 823 transitions. [2022-11-20 12:35:08,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.75) internal successors, (823), 4 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:08,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:08,894 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:08,894 INFO L175 Difference]: Start difference. First operand has 248 places, 235 transitions, 793 flow. Second operand 4 states and 823 transitions. [2022-11-20 12:35:08,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 236 transitions, 839 flow [2022-11-20 12:35:08,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 236 transitions, 792 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-20 12:35:08,901 INFO L231 Difference]: Finished difference. Result has 241 places, 234 transitions, 752 flow [2022-11-20 12:35:08,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=752, PETRI_PLACES=241, PETRI_TRANSITIONS=234} [2022-11-20 12:35:08,902 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 41 predicate places. [2022-11-20 12:35:08,903 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 234 transitions, 752 flow [2022-11-20 12:35:08,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:08,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:08,904 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:08,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:09,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:09,111 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:09,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2128900233, now seen corresponding path program 1 times [2022-11-20 12:35:09,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:09,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18073967] [2022-11-20 12:35:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 12:35:09,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:09,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18073967] [2022-11-20 12:35:09,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18073967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:09,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:09,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:35:09,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638263799] [2022-11-20 12:35:09,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:09,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:35:09,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:09,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:35:09,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:35:09,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-20 12:35:09,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 234 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 203.4) internal successors, (1017), 5 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:09,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:09,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-20 12:35:09,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:09,989 INFO L130 PetriNetUnfolder]: 373/2775 cut-off events. [2022-11-20 12:35:09,990 INFO L131 PetriNetUnfolder]: For 860/875 co-relation queries the response was YES. [2022-11-20 12:35:10,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 2775 events. 373/2775 cut-off events. For 860/875 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28135 event pairs, 15 based on Foata normal form. 60/2493 useless extension candidates. Maximal degree in co-relation 2704. Up to 672 conditions per place. [2022-11-20 12:35:10,011 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 15 selfloop transitions, 9 changer transitions 2/242 dead transitions. [2022-11-20 12:35:10,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 242 transitions, 830 flow [2022-11-20 12:35:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:35:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1230 transitions. [2022-11-20 12:35:10,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874458874458875 [2022-11-20 12:35:10,023 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1230 transitions. [2022-11-20 12:35:10,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1230 transitions. [2022-11-20 12:35:10,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:10,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1230 transitions. [2022-11-20 12:35:10,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,042 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,043 INFO L175 Difference]: Start difference. First operand has 241 places, 234 transitions, 752 flow. Second operand 6 states and 1230 transitions. [2022-11-20 12:35:10,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 242 transitions, 830 flow [2022-11-20 12:35:10,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 242 transitions, 820 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:35:10,053 INFO L231 Difference]: Finished difference. Result has 243 places, 237 transitions, 780 flow [2022-11-20 12:35:10,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=243, PETRI_TRANSITIONS=237} [2022-11-20 12:35:10,055 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 43 predicate places. [2022-11-20 12:35:10,055 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 237 transitions, 780 flow [2022-11-20 12:35:10,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.4) internal successors, (1017), 5 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:10,056 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:10,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:35:10,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1250371611, now seen corresponding path program 1 times [2022-11-20 12:35:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:10,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111849863] [2022-11-20 12:35:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:10,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 12:35:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:10,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111849863] [2022-11-20 12:35:10,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111849863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:10,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:10,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:10,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685547291] [2022-11-20 12:35:10,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:10,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:35:10,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:35:10,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:35:10,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-20 12:35:10,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 237 transitions, 780 flow. Second operand has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:10,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-20 12:35:10,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:10,927 INFO L130 PetriNetUnfolder]: 373/2688 cut-off events. [2022-11-20 12:35:10,927 INFO L131 PetriNetUnfolder]: For 899/914 co-relation queries the response was YES. [2022-11-20 12:35:10,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2688 events. 373/2688 cut-off events. For 899/914 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 26625 event pairs, 165 based on Foata normal form. 18/2373 useless extension candidates. Maximal degree in co-relation 2608. Up to 471 conditions per place. [2022-11-20 12:35:10,948 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 17 selfloop transitions, 8 changer transitions 1/242 dead transitions. [2022-11-20 12:35:10,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 242 transitions, 844 flow [2022-11-20 12:35:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:10,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2022-11-20 12:35:10,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8909090909090909 [2022-11-20 12:35:10,953 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2022-11-20 12:35:10,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2022-11-20 12:35:10,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:10,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2022-11-20 12:35:10,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,960 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,960 INFO L175 Difference]: Start difference. First operand has 243 places, 237 transitions, 780 flow. Second operand 5 states and 1029 transitions. [2022-11-20 12:35:10,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 242 transitions, 844 flow [2022-11-20 12:35:10,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 242 transitions, 837 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:35:10,969 INFO L231 Difference]: Finished difference. Result has 245 places, 237 transitions, 793 flow [2022-11-20 12:35:10,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=793, PETRI_PLACES=245, PETRI_TRANSITIONS=237} [2022-11-20 12:35:10,971 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 45 predicate places. [2022-11-20 12:35:10,971 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 237 transitions, 793 flow [2022-11-20 12:35:10,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:10,972 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:10,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:35:10,972 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:10,973 INFO L85 PathProgramCache]: Analyzing trace with hash -449492494, now seen corresponding path program 1 times [2022-11-20 12:35:10,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:10,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023043756] [2022-11-20 12:35:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:10,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:35:11,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:11,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023043756] [2022-11-20 12:35:11,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023043756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:11,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744209989] [2022-11-20 12:35:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:11,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:11,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:11,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:11,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:35:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:11,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:35:11,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:35:11,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 12:35:11,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744209989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:11,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:11,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 12:35:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207722329] [2022-11-20 12:35:11,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:11,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:35:11,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:35:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:35:11,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 231 [2022-11-20 12:35:11,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 237 transitions, 793 flow. Second operand has 22 states, 22 states have (on average 184.9090909090909) internal successors, (4068), 22 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:11,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:11,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 231 [2022-11-20 12:35:11,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:12,413 INFO L130 PetriNetUnfolder]: 5/479 cut-off events. [2022-11-20 12:35:12,413 INFO L131 PetriNetUnfolder]: For 129/158 co-relation queries the response was YES. [2022-11-20 12:35:12,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 479 events. 5/479 cut-off events. For 129/158 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1648 event pairs, 0 based on Foata normal form. 4/457 useless extension candidates. Maximal degree in co-relation 661. Up to 52 conditions per place. [2022-11-20 12:35:12,417 INFO L137 encePairwiseOnDemand]: 215/231 looper letters, 58 selfloop transitions, 34 changer transitions 0/263 dead transitions. [2022-11-20 12:35:12,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 263 transitions, 1051 flow [2022-11-20 12:35:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:35:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:35:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3173 transitions. [2022-11-20 12:35:12,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8079959256429845 [2022-11-20 12:35:12,422 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3173 transitions. [2022-11-20 12:35:12,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3173 transitions. [2022-11-20 12:35:12,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:12,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3173 transitions. [2022-11-20 12:35:12,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 186.64705882352942) internal successors, (3173), 17 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 231.0) internal successors, (4158), 18 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,438 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 231.0) internal successors, (4158), 18 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,438 INFO L175 Difference]: Start difference. First operand has 245 places, 237 transitions, 793 flow. Second operand 17 states and 3173 transitions. [2022-11-20 12:35:12,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 263 transitions, 1051 flow [2022-11-20 12:35:12,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 263 transitions, 1039 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:35:12,446 INFO L231 Difference]: Finished difference. Result has 260 places, 235 transitions, 855 flow [2022-11-20 12:35:12,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=855, PETRI_PLACES=260, PETRI_TRANSITIONS=235} [2022-11-20 12:35:12,447 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 60 predicate places. [2022-11-20 12:35:12,447 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 235 transitions, 855 flow [2022-11-20 12:35:12,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 184.9090909090909) internal successors, (4068), 22 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:12,449 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:12,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:12,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:35:12,655 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:12,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:12,656 INFO L85 PathProgramCache]: Analyzing trace with hash 556895346, now seen corresponding path program 2 times [2022-11-20 12:35:12,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:12,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414256138] [2022-11-20 12:35:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:12,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:35:12,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:12,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414256138] [2022-11-20 12:35:12,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414256138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:12,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:12,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:35:12,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514494772] [2022-11-20 12:35:12,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:12,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:35:12,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:12,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:35:12,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:35:12,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-20 12:35:12,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 235 transitions, 855 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:12,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-20 12:35:12,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:13,058 INFO L130 PetriNetUnfolder]: 125/1009 cut-off events. [2022-11-20 12:35:13,059 INFO L131 PetriNetUnfolder]: For 426/431 co-relation queries the response was YES. [2022-11-20 12:35:13,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 1009 events. 125/1009 cut-off events. For 426/431 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7138 event pairs, 65 based on Foata normal form. 10/920 useless extension candidates. Maximal degree in co-relation 1491. Up to 202 conditions per place. [2022-11-20 12:35:13,063 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 17 selfloop transitions, 6 changer transitions 6/243 dead transitions. [2022-11-20 12:35:13,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 243 transitions, 935 flow [2022-11-20 12:35:13,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:35:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1232 transitions. [2022-11-20 12:35:13,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-20 12:35:13,066 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1232 transitions. [2022-11-20 12:35:13,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1232 transitions. [2022-11-20 12:35:13,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:13,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1232 transitions. [2022-11-20 12:35:13,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,073 INFO L175 Difference]: Start difference. First operand has 260 places, 235 transitions, 855 flow. Second operand 6 states and 1232 transitions. [2022-11-20 12:35:13,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 243 transitions, 935 flow [2022-11-20 12:35:13,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 243 transitions, 867 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-20 12:35:13,080 INFO L231 Difference]: Finished difference. Result has 251 places, 236 transitions, 809 flow [2022-11-20 12:35:13,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=251, PETRI_TRANSITIONS=236} [2022-11-20 12:35:13,081 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 51 predicate places. [2022-11-20 12:35:13,081 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 236 transitions, 809 flow [2022-11-20 12:35:13,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:13,082 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:13,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:35:13,083 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:13,084 INFO L85 PathProgramCache]: Analyzing trace with hash 889928554, now seen corresponding path program 1 times [2022-11-20 12:35:13,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:13,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542685098] [2022-11-20 12:35:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:13,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:35:13,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:13,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542685098] [2022-11-20 12:35:13,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542685098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:13,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941826147] [2022-11-20 12:35:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:13,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:13,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:13,272 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:13,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:35:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:13,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:35:13,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:35:13,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:13,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941826147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:13,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:35:13,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:35:13,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047997833] [2022-11-20 12:35:13,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:13,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:13,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:13,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:35:13,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-20 12:35:13,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 236 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 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) [2022-11-20 12:35:13,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:13,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-20 12:35:13,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:13,798 INFO L130 PetriNetUnfolder]: 120/975 cut-off events. [2022-11-20 12:35:13,798 INFO L131 PetriNetUnfolder]: For 434/439 co-relation queries the response was YES. [2022-11-20 12:35:13,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 975 events. 120/975 cut-off events. For 434/439 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6740 event pairs, 30 based on Foata normal form. 6/888 useless extension candidates. Maximal degree in co-relation 1617. Up to 115 conditions per place. [2022-11-20 12:35:13,804 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 27 selfloop transitions, 6 changer transitions 0/248 dead transitions. [2022-11-20 12:35:13,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 248 transitions, 903 flow [2022-11-20 12:35:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:35:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:35:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1441 transitions. [2022-11-20 12:35:13,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891156462585034 [2022-11-20 12:35:13,807 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1441 transitions. [2022-11-20 12:35:13,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1441 transitions. [2022-11-20 12:35:13,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:13,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1441 transitions. [2022-11-20 12:35:13,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.85714285714286) internal successors, (1441), 7 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,814 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,814 INFO L175 Difference]: Start difference. First operand has 251 places, 236 transitions, 809 flow. Second operand 7 states and 1441 transitions. [2022-11-20 12:35:13,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 248 transitions, 903 flow [2022-11-20 12:35:13,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 248 transitions, 894 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:35:13,822 INFO L231 Difference]: Finished difference. Result has 253 places, 235 transitions, 808 flow [2022-11-20 12:35:13,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=808, PETRI_PLACES=253, PETRI_TRANSITIONS=235} [2022-11-20 12:35:13,824 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 53 predicate places. [2022-11-20 12:35:13,824 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 235 transitions, 808 flow [2022-11-20 12:35:13,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 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) [2022-11-20 12:35:13,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:13,825 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:13,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:14,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:35:14,032 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-20 12:35:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:14,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1507461868, now seen corresponding path program 1 times [2022-11-20 12:35:14,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:14,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296181921] [2022-11-20 12:35:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:14,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:35:14,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:14,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296181921] [2022-11-20 12:35:14,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296181921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:14,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:14,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:35:14,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320329207] [2022-11-20 12:35:14,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:14,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:35:14,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:14,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:35:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:35:14,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-20 12:35:14,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 235 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:14,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-20 12:35:14,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:14,559 INFO L130 PetriNetUnfolder]: 125/993 cut-off events. [2022-11-20 12:35:14,559 INFO L131 PetriNetUnfolder]: For 487/492 co-relation queries the response was YES. [2022-11-20 12:35:14,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 993 events. 125/993 cut-off events. For 487/492 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7097 event pairs, 5 based on Foata normal form. 10/901 useless extension candidates. Maximal degree in co-relation 1636. Up to 204 conditions per place. [2022-11-20 12:35:14,564 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 0 selfloop transitions, 0 changer transitions 239/239 dead transitions. [2022-11-20 12:35:14,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 239 transitions, 868 flow [2022-11-20 12:35:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:35:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1229 transitions. [2022-11-20 12:35:14,566 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8867243867243867 [2022-11-20 12:35:14,566 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1229 transitions. [2022-11-20 12:35:14,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1229 transitions. [2022-11-20 12:35:14,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:14,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1229 transitions. [2022-11-20 12:35:14,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,573 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,573 INFO L175 Difference]: Start difference. First operand has 253 places, 235 transitions, 808 flow. Second operand 6 states and 1229 transitions. [2022-11-20 12:35:14,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 239 transitions, 868 flow [2022-11-20 12:35:14,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 239 transitions, 849 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-20 12:35:14,580 INFO L231 Difference]: Finished difference. Result has 249 places, 0 transitions, 0 flow [2022-11-20 12:35:14,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=249, PETRI_TRANSITIONS=0} [2022-11-20 12:35:14,581 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 49 predicate places. [2022-11-20 12:35:14,581 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 0 transitions, 0 flow [2022-11-20 12:35:14,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-11-20 12:35:14,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-11-20 12:35:14,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-11-20 12:35:14,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-11-20 12:35:14,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2022-11-20 12:35:14,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2022-11-20 12:35:14,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2022-11-20 12:35:14,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2022-11-20 12:35:14,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-11-20 12:35:14,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-11-20 12:35:14,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2022-11-20 12:35:14,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2022-11-20 12:35:14,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-11-20 12:35:14,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-11-20 12:35:14,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-11-20 12:35:14,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-11-20 12:35:14,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:35:14,588 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:14,594 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:35:14,594 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:35:14,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:35:14 BasicIcfg [2022-11-20 12:35:14,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:35:14,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:35:14,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:35:14,600 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:35:14,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:55" (3/4) ... [2022-11-20 12:35:14,603 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:35:14,609 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:35:14,610 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:35:14,617 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-20 12:35:14,617 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:35:14,617 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:35:14,618 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:35:14,664 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:35:14,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:35:14,665 INFO L158 Benchmark]: Toolchain (without parser) took 20519.68ms. Allocated memory was 190.8MB in the beginning and 576.7MB in the end (delta: 385.9MB). Free memory was 154.7MB in the beginning and 191.2MB in the end (delta: -36.5MB). Peak memory consumption was 348.1MB. Max. memory is 16.1GB. [2022-11-20 12:35:14,665 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:35:14,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.04ms. Allocated memory is still 190.8MB. Free memory was 154.7MB in the beginning and 157.6MB in the end (delta: -2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:35:14,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.38ms. Allocated memory is still 190.8MB. Free memory was 157.6MB in the beginning and 155.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:35:14,666 INFO L158 Benchmark]: Boogie Preprocessor took 34.65ms. Allocated memory is still 190.8MB. Free memory was 155.6MB in the beginning and 153.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:35:14,666 INFO L158 Benchmark]: RCFGBuilder took 752.53ms. Allocated memory is still 190.8MB. Free memory was 153.5MB in the beginning and 134.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 12:35:14,667 INFO L158 Benchmark]: TraceAbstraction took 19206.32ms. Allocated memory was 190.8MB in the beginning and 576.7MB in the end (delta: 385.9MB). Free memory was 133.3MB in the beginning and 195.4MB in the end (delta: -62.0MB). Peak memory consumption was 324.3MB. Max. memory is 16.1GB. [2022-11-20 12:35:14,667 INFO L158 Benchmark]: Witness Printer took 64.06ms. Allocated memory is still 576.7MB. Free memory was 195.4MB in the beginning and 191.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:35:14,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.04ms. Allocated memory is still 190.8MB. Free memory was 154.7MB in the beginning and 157.6MB in the end (delta: -2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.38ms. Allocated memory is still 190.8MB. Free memory was 157.6MB in the beginning and 155.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.65ms. Allocated memory is still 190.8MB. Free memory was 155.6MB in the beginning and 153.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 752.53ms. Allocated memory is still 190.8MB. Free memory was 153.5MB in the beginning and 134.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 19206.32ms. Allocated memory was 190.8MB in the beginning and 576.7MB in the end (delta: 385.9MB). Free memory was 133.3MB in the beginning and 195.4MB in the end (delta: -62.0MB). Peak memory consumption was 324.3MB. Max. memory is 16.1GB. * Witness Printer took 64.06ms. Allocated memory is still 576.7MB. Free memory was 195.4MB in the beginning and 191.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 285 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.0s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1593 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1593 mSDsluCounter, 288 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1401 IncrementalHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 112 mSDtfsCounter, 1401 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1575 GetRequests, 1387 SyntacticMatches, 5 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=855occurred in iteration=16, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 3559 NumberOfCodeBlocks, 3523 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 4002 ConstructedInterpolants, 0 QuantifiedInterpolants, 6440 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1858 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 1337/1620 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:35:14,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf77e712-a0f6-4bb7-9110-0c9c812543cd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE