./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/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_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/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_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/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 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --- 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 12:38:22,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:38:22,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:38:22,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:38:22,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:38:22,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:38:22,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:38:22,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:38:22,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:38:22,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:38:22,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:38:22,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:38:22,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:38:22,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:38:22,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:38:22,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:38:22,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:38:22,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:38:22,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:38:22,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:38:22,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:38:22,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:38:22,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:38:22,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:38:22,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:38:22,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:38:22,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:38:22,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:38:22,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:38:22,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:38:22,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:38:22,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:38:22,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:38:22,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:38:22,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:38:22,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:38:22,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:38:22,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:38:22,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:38:22,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:38:22,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:38:22,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:38:22,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:38:22,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:38:22,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:38:22,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:38:22,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:38:22,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:38:22,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:38:22,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:38:22,965 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:38:22,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:38:22,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:38:22,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:38:22,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:38:22,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:38:22,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:38:22,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:38:22,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:38:22,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:38:22,968 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:38:22,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:38:22,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:38:22,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:38:22,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:38:22,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:38:22,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:38:22,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:38:22,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:38:22,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:38:22,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:38:22,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:38:22,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:38:22,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:38:22,970 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:38:22,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:38:22,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:38:22,972 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_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b [2022-11-20 12:38:23,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:38:23,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:38:23,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:38:23,320 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:38:23,321 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:38:23,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-11-20 12:38:26,455 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:38:26,659 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:38:26,660 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-11-20 12:38:26,667 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/data/da477b09a/c31f1aae7cf0489aab46ee0fc41257c4/FLAGe2c4ad992 [2022-11-20 12:38:26,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/data/da477b09a/c31f1aae7cf0489aab46ee0fc41257c4 [2022-11-20 12:38:26,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:38:26,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:38:26,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:38:26,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:38:26,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:38:26,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:26,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147ef4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26, skipping insertion in model container [2022-11-20 12:38:26,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:26,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:38:26,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:38:26,894 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_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-11-20 12:38:26,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:38:26,909 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:38:26,935 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_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-11-20 12:38:26,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:38:26,953 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:38:26,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26 WrapperNode [2022-11-20 12:38:26,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:38:26,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:38:26,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:38:26,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:38:26,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:26,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,024 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 235 [2022-11-20 12:38:27,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:38:27,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:38:27,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:38:27,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:38:27,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,073 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:38:27,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:38:27,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:38:27,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:38:27,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (1/1) ... [2022-11-20 12:38:27,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:38:27,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:27,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:27,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:38:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:38:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:38:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:38:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:38:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:38:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:38:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:38:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:38:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:38:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:38:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:38:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:38:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:38:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:38:27,184 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 12:38:27,347 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:38:27,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:38:27,877 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:38:27,890 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:38:27,891 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:38:27,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:38:27 BoogieIcfgContainer [2022-11-20 12:38:27,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:38:27,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:38:27,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:38:27,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:38:27,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:38:26" (1/3) ... [2022-11-20 12:38:27,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318808f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:38:27, skipping insertion in model container [2022-11-20 12:38:27,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:26" (2/3) ... [2022-11-20 12:38:27,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318808f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:38:27, skipping insertion in model container [2022-11-20 12:38:27,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:38:27" (3/3) ... [2022-11-20 12:38:27,904 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2022-11-20 12:38:27,914 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:38:27,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:38:27,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 12:38:27,926 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:38:28,136 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:38:28,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 313 transitions, 650 flow [2022-11-20 12:38:28,383 INFO L130 PetriNetUnfolder]: 25/310 cut-off events. [2022-11-20 12:38:28,383 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:38:28,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 310 events. 25/310 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 879 event pairs, 0 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2022-11-20 12:38:28,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 313 transitions, 650 flow [2022-11-20 12:38:28,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 289 transitions, 593 flow [2022-11-20 12:38:28,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:38:28,429 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;@4d46d5dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:38:28,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-20 12:38:28,450 INFO L130 PetriNetUnfolder]: 6/120 cut-off events. [2022-11-20 12:38:28,451 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:38:28,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:28,452 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] [2022-11-20 12:38:28,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:28,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:28,458 INFO L85 PathProgramCache]: Analyzing trace with hash -938677416, now seen corresponding path program 1 times [2022-11-20 12:38:28,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:28,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439167856] [2022-11-20 12:38:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:28,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:28,894 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 12:38:28,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:28,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439167856] [2022-11-20 12:38:28,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439167856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:28,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:28,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975208785] [2022-11-20 12:38:28,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:28,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:28,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:28,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-20 12:38:28,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 289 transitions, 593 flow. Second operand has 6 states, 6 states have (on average 274.8333333333333) internal successors, (1649), 6 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states 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 12:38:28,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:28,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-20 12:38:28,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:29,436 INFO L130 PetriNetUnfolder]: 119/691 cut-off events. [2022-11-20 12:38:29,437 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-20 12:38:29,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 691 events. 119/691 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3856 event pairs, 2 based on Foata normal form. 118/718 useless extension candidates. Maximal degree in co-relation 912. Up to 164 conditions per place. [2022-11-20 12:38:29,452 INFO L137 encePairwiseOnDemand]: 301/313 looper letters, 33 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-20 12:38:29,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 290 transitions, 689 flow [2022-11-20 12:38:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:38:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:38:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1691 transitions. [2022-11-20 12:38:29,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9004259850905219 [2022-11-20 12:38:29,472 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1691 transitions. [2022-11-20 12:38:29,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1691 transitions. [2022-11-20 12:38:29,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:29,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1691 transitions. [2022-11-20 12:38:29,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.8333333333333) internal successors, (1691), 6 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states 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 12:38:29,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:29,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:29,499 INFO L175 Difference]: Start difference. First operand has 275 places, 289 transitions, 593 flow. Second operand 6 states and 1691 transitions. [2022-11-20 12:38:29,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 290 transitions, 689 flow [2022-11-20 12:38:29,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 290 transitions, 670 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:38:29,510 INFO L231 Difference]: Finished difference. Result has 274 places, 282 transitions, 580 flow [2022-11-20 12:38:29,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=274, PETRI_TRANSITIONS=282} [2022-11-20 12:38:29,517 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, -1 predicate places. [2022-11-20 12:38:29,517 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 282 transitions, 580 flow [2022-11-20 12:38:29,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.8333333333333) internal successors, (1649), 6 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states 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 12:38:29,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:29,519 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] [2022-11-20 12:38:29,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:38:29,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash 965771968, now seen corresponding path program 1 times [2022-11-20 12:38:29,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:29,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8399765] [2022-11-20 12:38:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:29,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:29,682 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 12:38:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:29,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8399765] [2022-11-20 12:38:29,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8399765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:29,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:29,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:29,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45700326] [2022-11-20 12:38:29,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:38:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:29,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:29,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:29,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-20 12:38:29,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 282 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 12:38:29,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:29,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-20 12:38:29,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:30,058 INFO L130 PetriNetUnfolder]: 101/880 cut-off events. [2022-11-20 12:38:30,058 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-20 12:38:30,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 880 events. 101/880 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5696 event pairs, 24 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 712. Up to 71 conditions per place. [2022-11-20 12:38:30,079 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 37 selfloop transitions, 4 changer transitions 0/296 dead transitions. [2022-11-20 12:38:30,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 296 transitions, 698 flow [2022-11-20 12:38:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:38:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1147 transitions. [2022-11-20 12:38:30,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9161341853035144 [2022-11-20 12:38:30,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1147 transitions. [2022-11-20 12:38:30,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1147 transitions. [2022-11-20 12:38:30,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:30,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1147 transitions. [2022-11-20 12:38:30,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.75) internal successors, (1147), 4 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states 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 12:38:30,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:30,130 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:30,130 INFO L175 Difference]: Start difference. First operand has 274 places, 282 transitions, 580 flow. Second operand 4 states and 1147 transitions. [2022-11-20 12:38:30,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 296 transitions, 698 flow [2022-11-20 12:38:30,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 296 transitions, 689 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:38:30,144 INFO L231 Difference]: Finished difference. Result has 275 places, 283 transitions, 595 flow [2022-11-20 12:38:30,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=595, PETRI_PLACES=275, PETRI_TRANSITIONS=283} [2022-11-20 12:38:30,145 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 0 predicate places. [2022-11-20 12:38:30,146 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 283 transitions, 595 flow [2022-11-20 12:38:30,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 12:38:30,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:30,148 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] [2022-11-20 12:38:30,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:38:30,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:30,150 INFO L85 PathProgramCache]: Analyzing trace with hash -959329316, now seen corresponding path program 1 times [2022-11-20 12:38:30,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:30,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596846463] [2022-11-20 12:38:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:30,308 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 12:38:30,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:30,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596846463] [2022-11-20 12:38:30,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596846463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:30,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:30,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:30,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607945464] [2022-11-20 12:38:30,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:30,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:30,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:30,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:30,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:30,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-20 12:38:30,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 283 transitions, 595 flow. Second operand has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states 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 12:38:30,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:30,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-20 12:38:30,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:30,807 INFO L130 PetriNetUnfolder]: 236/1250 cut-off events. [2022-11-20 12:38:30,808 INFO L131 PetriNetUnfolder]: For 123/161 co-relation queries the response was YES. [2022-11-20 12:38:30,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1250 events. 236/1250 cut-off events. For 123/161 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9138 event pairs, 6 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 1475. Up to 327 conditions per place. [2022-11-20 12:38:30,839 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 32 selfloop transitions, 5 changer transitions 0/289 dead transitions. [2022-11-20 12:38:30,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 289 transitions, 688 flow [2022-11-20 12:38:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:38:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:38:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1676 transitions. [2022-11-20 12:38:30,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8924387646432375 [2022-11-20 12:38:30,845 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1676 transitions. [2022-11-20 12:38:30,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1676 transitions. [2022-11-20 12:38:30,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:30,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1676 transitions. [2022-11-20 12:38:30,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:38:30,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:30,857 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:30,858 INFO L175 Difference]: Start difference. First operand has 275 places, 283 transitions, 595 flow. Second operand 6 states and 1676 transitions. [2022-11-20 12:38:30,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 289 transitions, 688 flow [2022-11-20 12:38:30,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:38:30,866 INFO L231 Difference]: Finished difference. Result has 279 places, 282 transitions, 603 flow [2022-11-20 12:38:30,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=603, PETRI_PLACES=279, PETRI_TRANSITIONS=282} [2022-11-20 12:38:30,869 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 4 predicate places. [2022-11-20 12:38:30,869 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 282 transitions, 603 flow [2022-11-20 12:38:30,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states 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 12:38:30,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:30,873 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] [2022-11-20 12:38:30,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:38:30,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:30,875 INFO L85 PathProgramCache]: Analyzing trace with hash 325563140, now seen corresponding path program 1 times [2022-11-20 12:38:30,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:30,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493205145] [2022-11-20 12:38:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:30,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:31,036 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 12:38:31,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:31,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493205145] [2022-11-20 12:38:31,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493205145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:31,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:31,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:31,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167709721] [2022-11-20 12:38:31,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:31,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:38:31,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:31,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:31,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:31,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-20 12:38:31,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 282 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 12:38:31,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:31,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-20 12:38:31,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:31,475 INFO L130 PetriNetUnfolder]: 148/1049 cut-off events. [2022-11-20 12:38:31,475 INFO L131 PetriNetUnfolder]: For 104/400 co-relation queries the response was YES. [2022-11-20 12:38:31,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1049 events. 148/1049 cut-off events. For 104/400 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7561 event pairs, 48 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 1152. Up to 126 conditions per place. [2022-11-20 12:38:31,509 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 36 selfloop transitions, 4 changer transitions 0/295 dead transitions. [2022-11-20 12:38:31,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 295 transitions, 716 flow [2022-11-20 12:38:31,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:38:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1146 transitions. [2022-11-20 12:38:31,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153354632587859 [2022-11-20 12:38:31,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1146 transitions. [2022-11-20 12:38:31,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1146 transitions. [2022-11-20 12:38:31,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:31,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1146 transitions. [2022-11-20 12:38:31,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states 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 12:38:31,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:31,525 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:31,525 INFO L175 Difference]: Start difference. First operand has 279 places, 282 transitions, 603 flow. Second operand 4 states and 1146 transitions. [2022-11-20 12:38:31,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 295 transitions, 716 flow [2022-11-20 12:38:31,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 295 transitions, 707 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:38:31,531 INFO L231 Difference]: Finished difference. Result has 280 places, 283 transitions, 618 flow [2022-11-20 12:38:31,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=618, PETRI_PLACES=280, PETRI_TRANSITIONS=283} [2022-11-20 12:38:31,536 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 5 predicate places. [2022-11-20 12:38:31,536 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 283 transitions, 618 flow [2022-11-20 12:38:31,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 12:38:31,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:31,537 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] [2022-11-20 12:38:31,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:38:31,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:31,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2076647385, now seen corresponding path program 1 times [2022-11-20 12:38:31,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:31,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645506612] [2022-11-20 12:38:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:31,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:31,635 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 12:38:31,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:31,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645506612] [2022-11-20 12:38:31,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645506612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:31,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:31,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:31,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120441966] [2022-11-20 12:38:31,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:31,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:38:31,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:31,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:31,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:31,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-20 12:38:31,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 283 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states 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 12:38:31,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:31,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-20 12:38:31,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:31,932 INFO L130 PetriNetUnfolder]: 95/1042 cut-off events. [2022-11-20 12:38:31,932 INFO L131 PetriNetUnfolder]: For 55/114 co-relation queries the response was YES. [2022-11-20 12:38:31,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 1042 events. 95/1042 cut-off events. For 55/114 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7165 event pairs, 24 based on Foata normal form. 5/915 useless extension candidates. Maximal degree in co-relation 1174. Up to 72 conditions per place. [2022-11-20 12:38:31,960 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 37 selfloop transitions, 3 changer transitions 0/295 dead transitions. [2022-11-20 12:38:31,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 295 transitions, 726 flow [2022-11-20 12:38:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:38:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1145 transitions. [2022-11-20 12:38:31,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9145367412140575 [2022-11-20 12:38:31,964 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1145 transitions. [2022-11-20 12:38:31,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1145 transitions. [2022-11-20 12:38:31,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:31,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1145 transitions. [2022-11-20 12:38:31,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.25) internal successors, (1145), 4 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:38:31,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:31,971 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:31,971 INFO L175 Difference]: Start difference. First operand has 280 places, 283 transitions, 618 flow. Second operand 4 states and 1145 transitions. [2022-11-20 12:38:31,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 295 transitions, 726 flow [2022-11-20 12:38:31,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:38:31,978 INFO L231 Difference]: Finished difference. Result has 282 places, 282 transitions, 616 flow [2022-11-20 12:38:31,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=616, PETRI_PLACES=282, PETRI_TRANSITIONS=282} [2022-11-20 12:38:31,979 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 7 predicate places. [2022-11-20 12:38:31,979 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 282 transitions, 616 flow [2022-11-20 12:38:31,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states 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 12:38:31,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:31,980 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] [2022-11-20 12:38:31,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:38:31,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:31,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:31,981 INFO L85 PathProgramCache]: Analyzing trace with hash 48441314, now seen corresponding path program 1 times [2022-11-20 12:38:31,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:31,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743242633] [2022-11-20 12:38:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:31,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:32,087 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 12:38:32,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:32,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743242633] [2022-11-20 12:38:32,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743242633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:32,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:32,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:32,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064511747] [2022-11-20 12:38:32,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:32,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:32,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:32,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-20 12:38:32,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 282 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states 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 12:38:32,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:32,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-20 12:38:32,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:32,404 INFO L130 PetriNetUnfolder]: 139/978 cut-off events. [2022-11-20 12:38:32,405 INFO L131 PetriNetUnfolder]: For 38/130 co-relation queries the response was YES. [2022-11-20 12:38:32,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 978 events. 139/978 cut-off events. For 38/130 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6553 event pairs, 2 based on Foata normal form. 4/883 useless extension candidates. Maximal degree in co-relation 1352. Up to 217 conditions per place. [2022-11-20 12:38:32,430 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 31 selfloop transitions, 5 changer transitions 0/289 dead transitions. [2022-11-20 12:38:32,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 289 transitions, 710 flow [2022-11-20 12:38:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:38:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:38:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1675 transitions. [2022-11-20 12:38:32,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8919062832800851 [2022-11-20 12:38:32,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1675 transitions. [2022-11-20 12:38:32,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1675 transitions. [2022-11-20 12:38:32,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:32,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1675 transitions. [2022-11-20 12:38:32,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:38:32,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:32,445 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:32,445 INFO L175 Difference]: Start difference. First operand has 282 places, 282 transitions, 616 flow. Second operand 6 states and 1675 transitions. [2022-11-20 12:38:32,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 289 transitions, 710 flow [2022-11-20 12:38:32,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 289 transitions, 705 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:38:32,452 INFO L231 Difference]: Finished difference. Result has 284 places, 281 transitions, 619 flow [2022-11-20 12:38:32,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=284, PETRI_TRANSITIONS=281} [2022-11-20 12:38:32,453 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 9 predicate places. [2022-11-20 12:38:32,454 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 281 transitions, 619 flow [2022-11-20 12:38:32,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states 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 12:38:32,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:32,455 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] [2022-11-20 12:38:32,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:38:32,455 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1646095175, now seen corresponding path program 1 times [2022-11-20 12:38:32,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:32,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334675276] [2022-11-20 12:38:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:32,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:32,545 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 12:38:32,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:32,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334675276] [2022-11-20 12:38:32,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334675276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:32,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:32,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:32,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416177491] [2022-11-20 12:38:32,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:32,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:32,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:32,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:32,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:32,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-20 12:38:32,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 281 transitions, 619 flow. Second operand has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states 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 12:38:32,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:32,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-20 12:38:32,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:33,025 INFO L130 PetriNetUnfolder]: 376/1679 cut-off events. [2022-11-20 12:38:33,025 INFO L131 PetriNetUnfolder]: For 274/391 co-relation queries the response was YES. [2022-11-20 12:38:33,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 1679 events. 376/1679 cut-off events. For 274/391 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14176 event pairs, 4 based on Foata normal form. 0/1366 useless extension candidates. Maximal degree in co-relation 1992. Up to 574 conditions per place. [2022-11-20 12:38:33,057 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 31 selfloop transitions, 5 changer transitions 0/286 dead transitions. [2022-11-20 12:38:33,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 286 transitions, 705 flow [2022-11-20 12:38:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:38:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:38:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1675 transitions. [2022-11-20 12:38:33,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8919062832800851 [2022-11-20 12:38:33,062 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1675 transitions. [2022-11-20 12:38:33,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1675 transitions. [2022-11-20 12:38:33,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:33,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1675 transitions. [2022-11-20 12:38:33,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:38:33,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:33,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:33,072 INFO L175 Difference]: Start difference. First operand has 284 places, 281 transitions, 619 flow. Second operand 6 states and 1675 transitions. [2022-11-20 12:38:33,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 286 transitions, 705 flow [2022-11-20 12:38:33,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 286 transitions, 696 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:38:33,078 INFO L231 Difference]: Finished difference. Result has 284 places, 280 transitions, 618 flow [2022-11-20 12:38:33,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=618, PETRI_PLACES=284, PETRI_TRANSITIONS=280} [2022-11-20 12:38:33,079 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 9 predicate places. [2022-11-20 12:38:33,079 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 280 transitions, 618 flow [2022-11-20 12:38:33,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states 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 12:38:33,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:33,081 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] [2022-11-20 12:38:33,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:38:33,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:33,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash 182816677, now seen corresponding path program 1 times [2022-11-20 12:38:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:33,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350343777] [2022-11-20 12:38:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:33,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:33,147 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 12:38:33,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:33,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350343777] [2022-11-20 12:38:33,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350343777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:33,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:33,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275391491] [2022-11-20 12:38:33,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:33,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:38:33,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:33,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:33,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:33,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-20 12:38:33,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 280 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states 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 12:38:33,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:33,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-20 12:38:33,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:33,519 INFO L130 PetriNetUnfolder]: 105/1178 cut-off events. [2022-11-20 12:38:33,520 INFO L131 PetriNetUnfolder]: For 30/106 co-relation queries the response was YES. [2022-11-20 12:38:33,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 1178 events. 105/1178 cut-off events. For 30/106 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8576 event pairs, 36 based on Foata normal form. 5/1047 useless extension candidates. Maximal degree in co-relation 1380. Up to 106 conditions per place. [2022-11-20 12:38:33,552 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 34 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-20 12:38:33,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 292 transitions, 722 flow [2022-11-20 12:38:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:38:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1142 transitions. [2022-11-20 12:38:33,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9121405750798722 [2022-11-20 12:38:33,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1142 transitions. [2022-11-20 12:38:33,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1142 transitions. [2022-11-20 12:38:33,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:33,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1142 transitions. [2022-11-20 12:38:33,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states 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 12:38:33,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:33,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:33,565 INFO L175 Difference]: Start difference. First operand has 284 places, 280 transitions, 618 flow. Second operand 4 states and 1142 transitions. [2022-11-20 12:38:33,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 292 transitions, 722 flow [2022-11-20 12:38:33,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 292 transitions, 711 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:38:33,572 INFO L231 Difference]: Finished difference. Result has 282 places, 280 transitions, 616 flow [2022-11-20 12:38:33,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=616, PETRI_PLACES=282, PETRI_TRANSITIONS=280} [2022-11-20 12:38:33,574 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 7 predicate places. [2022-11-20 12:38:33,574 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 280 transitions, 616 flow [2022-11-20 12:38:33,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states 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 12:38:33,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:33,575 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] [2022-11-20 12:38:33,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:38:33,575 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash -510656191, now seen corresponding path program 1 times [2022-11-20 12:38:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:33,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457417897] [2022-11-20 12:38:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:33,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:33,652 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 12:38:33,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:33,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457417897] [2022-11-20 12:38:33,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457417897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:33,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:33,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:33,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967851504] [2022-11-20 12:38:33,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:33,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:38:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:33,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:33,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:33,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-20 12:38:33,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 280 transitions, 616 flow. Second operand has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states 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 12:38:33,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:33,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-20 12:38:33,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:34,293 INFO L130 PetriNetUnfolder]: 493/2445 cut-off events. [2022-11-20 12:38:34,293 INFO L131 PetriNetUnfolder]: For 469/735 co-relation queries the response was YES. [2022-11-20 12:38:34,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3484 conditions, 2445 events. 493/2445 cut-off events. For 469/735 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24407 event pairs, 192 based on Foata normal form. 0/1885 useless extension candidates. Maximal degree in co-relation 3404. Up to 446 conditions per place. [2022-11-20 12:38:34,331 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 35 selfloop transitions, 4 changer transitions 0/292 dead transitions. [2022-11-20 12:38:34,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 292 transitions, 722 flow [2022-11-20 12:38:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:38:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1145 transitions. [2022-11-20 12:38:34,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9145367412140575 [2022-11-20 12:38:34,335 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1145 transitions. [2022-11-20 12:38:34,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1145 transitions. [2022-11-20 12:38:34,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:34,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1145 transitions. [2022-11-20 12:38:34,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.25) internal successors, (1145), 4 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:38:34,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:34,343 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:34,343 INFO L175 Difference]: Start difference. First operand has 282 places, 280 transitions, 616 flow. Second operand 4 states and 1145 transitions. [2022-11-20 12:38:34,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 292 transitions, 722 flow [2022-11-20 12:38:34,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 292 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:38:34,349 INFO L231 Difference]: Finished difference. Result has 286 places, 281 transitions, 638 flow [2022-11-20 12:38:34,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=638, PETRI_PLACES=286, PETRI_TRANSITIONS=281} [2022-11-20 12:38:34,350 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 11 predicate places. [2022-11-20 12:38:34,351 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 281 transitions, 638 flow [2022-11-20 12:38:34,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states 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 12:38:34,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:34,352 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] [2022-11-20 12:38:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:38:34,353 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1696084075, now seen corresponding path program 1 times [2022-11-20 12:38:34,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:34,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766465280] [2022-11-20 12:38:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:34,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:34,414 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 12:38:34,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:34,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766465280] [2022-11-20 12:38:34,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766465280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:34,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:34,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:34,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650305548] [2022-11-20 12:38:34,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:34,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:38:34,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:34,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:34,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:34,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-20 12:38:34,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 281 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states 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 12:38:34,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:34,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-20 12:38:34,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:34,915 INFO L130 PetriNetUnfolder]: 167/1351 cut-off events. [2022-11-20 12:38:34,915 INFO L131 PetriNetUnfolder]: For 207/651 co-relation queries the response was YES. [2022-11-20 12:38:34,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1351 events. 167/1351 cut-off events. For 207/651 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10711 event pairs, 60 based on Foata normal form. 6/1147 useless extension candidates. Maximal degree in co-relation 1690. Up to 148 conditions per place. [2022-11-20 12:38:34,967 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 36 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-20 12:38:34,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 292 transitions, 741 flow [2022-11-20 12:38:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:38:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1144 transitions. [2022-11-20 12:38:34,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9137380191693291 [2022-11-20 12:38:34,971 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1144 transitions. [2022-11-20 12:38:34,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1144 transitions. [2022-11-20 12:38:34,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:34,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1144 transitions. [2022-11-20 12:38:34,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 12:38:34,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:34,978 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:34,978 INFO L175 Difference]: Start difference. First operand has 286 places, 281 transitions, 638 flow. Second operand 4 states and 1144 transitions. [2022-11-20 12:38:34,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 292 transitions, 741 flow [2022-11-20 12:38:34,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 292 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:38:34,983 INFO L231 Difference]: Finished difference. Result has 288 places, 280 transitions, 636 flow [2022-11-20 12:38:34,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=636, PETRI_PLACES=288, PETRI_TRANSITIONS=280} [2022-11-20 12:38:34,986 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 13 predicate places. [2022-11-20 12:38:34,987 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 280 transitions, 636 flow [2022-11-20 12:38:34,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states 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 12:38:34,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:34,988 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] [2022-11-20 12:38:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:38:34,988 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1038999654, now seen corresponding path program 1 times [2022-11-20 12:38:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:34,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801624195] [2022-11-20 12:38:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:34,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:35,089 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 12:38:35,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:35,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801624195] [2022-11-20 12:38:35,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801624195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:35,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:35,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:35,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015462535] [2022-11-20 12:38:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:35,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:35,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:35,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-20 12:38:35,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 280 transitions, 636 flow. Second operand has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states 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 12:38:35,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:35,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-20 12:38:35,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:35,761 INFO L130 PetriNetUnfolder]: 358/2349 cut-off events. [2022-11-20 12:38:35,762 INFO L131 PetriNetUnfolder]: For 273/345 co-relation queries the response was YES. [2022-11-20 12:38:35,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 2349 events. 358/2349 cut-off events. For 273/345 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21248 event pairs, 8 based on Foata normal form. 0/2010 useless extension candidates. Maximal degree in co-relation 2957. Up to 535 conditions per place. [2022-11-20 12:38:35,820 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 30 selfloop transitions, 5 changer transitions 0/286 dead transitions. [2022-11-20 12:38:35,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 286 transitions, 725 flow [2022-11-20 12:38:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:38:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:38:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1674 transitions. [2022-11-20 12:38:35,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8913738019169329 [2022-11-20 12:38:35,826 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1674 transitions. [2022-11-20 12:38:35,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1674 transitions. [2022-11-20 12:38:35,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:35,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1674 transitions. [2022-11-20 12:38:35,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states 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 12:38:35,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:35,835 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:35,835 INFO L175 Difference]: Start difference. First operand has 288 places, 280 transitions, 636 flow. Second operand 6 states and 1674 transitions. [2022-11-20 12:38:35,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 286 transitions, 725 flow [2022-11-20 12:38:35,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 286 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:38:35,843 INFO L231 Difference]: Finished difference. Result has 290 places, 279 transitions, 639 flow [2022-11-20 12:38:35,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=639, PETRI_PLACES=290, PETRI_TRANSITIONS=279} [2022-11-20 12:38:35,844 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 15 predicate places. [2022-11-20 12:38:35,845 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 279 transitions, 639 flow [2022-11-20 12:38:35,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states 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 12:38:35,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:35,846 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] [2022-11-20 12:38:35,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:38:35,846 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:35,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:35,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1719841081, now seen corresponding path program 1 times [2022-11-20 12:38:35,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:35,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957369811] [2022-11-20 12:38:35,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:35,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:35,991 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 12:38:35,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:35,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957369811] [2022-11-20 12:38:35,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957369811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:35,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:35,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:38:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581145176] [2022-11-20 12:38:35,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:35,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:38:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:35,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:38:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:38:35,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-20 12:38:36,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 279 transitions, 639 flow. Second operand has 8 states, 8 states have (on average 270.0) internal successors, (2160), 8 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 12:38:36,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:36,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-20 12:38:36,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:36,477 INFO L130 PetriNetUnfolder]: 136/1019 cut-off events. [2022-11-20 12:38:36,477 INFO L131 PetriNetUnfolder]: For 56/504 co-relation queries the response was YES. [2022-11-20 12:38:36,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 1019 events. 136/1019 cut-off events. For 56/504 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7165 event pairs, 4 based on Foata normal form. 8/944 useless extension candidates. Maximal degree in co-relation 1483. Up to 162 conditions per place. [2022-11-20 12:38:36,512 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 40 selfloop transitions, 9 changer transitions 0/295 dead transitions. [2022-11-20 12:38:36,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 295 transitions, 783 flow [2022-11-20 12:38:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:38:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:38:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2194 transitions. [2022-11-20 12:38:36,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761980830670927 [2022-11-20 12:38:36,517 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2194 transitions. [2022-11-20 12:38:36,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2194 transitions. [2022-11-20 12:38:36,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:36,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2194 transitions. [2022-11-20 12:38:36,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states 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 12:38:36,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:36,528 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:36,529 INFO L175 Difference]: Start difference. First operand has 290 places, 279 transitions, 639 flow. Second operand 8 states and 2194 transitions. [2022-11-20 12:38:36,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 295 transitions, 783 flow [2022-11-20 12:38:36,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 295 transitions, 774 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:38:36,535 INFO L231 Difference]: Finished difference. Result has 295 places, 280 transitions, 660 flow [2022-11-20 12:38:36,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=660, PETRI_PLACES=295, PETRI_TRANSITIONS=280} [2022-11-20 12:38:36,538 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 20 predicate places. [2022-11-20 12:38:36,538 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 280 transitions, 660 flow [2022-11-20 12:38:36,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.0) internal successors, (2160), 8 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 12:38:36,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:36,540 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] [2022-11-20 12:38:36,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:38:36,540 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:36,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1775465138, now seen corresponding path program 1 times [2022-11-20 12:38:36,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:36,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391488751] [2022-11-20 12:38:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:36,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:36,693 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 12:38:36,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:36,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391488751] [2022-11-20 12:38:36,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391488751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:36,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:36,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:38:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768602874] [2022-11-20 12:38:36,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:36,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:38:36,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:36,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:38:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:38:36,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-20 12:38:36,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 280 transitions, 660 flow. Second operand has 8 states, 8 states have (on average 270.125) internal successors, (2161), 8 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states 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 12:38:36,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:36,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-20 12:38:36,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:37,157 INFO L130 PetriNetUnfolder]: 118/993 cut-off events. [2022-11-20 12:38:37,157 INFO L131 PetriNetUnfolder]: For 94/470 co-relation queries the response was YES. [2022-11-20 12:38:37,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 993 events. 118/993 cut-off events. For 94/470 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6818 event pairs, 4 based on Foata normal form. 8/930 useless extension candidates. Maximal degree in co-relation 1452. Up to 148 conditions per place. [2022-11-20 12:38:37,181 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 43 selfloop transitions, 9 changer transitions 0/298 dead transitions. [2022-11-20 12:38:37,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 298 transitions, 821 flow [2022-11-20 12:38:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:38:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:38:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2196 transitions. [2022-11-20 12:38:37,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769968051118211 [2022-11-20 12:38:37,187 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2196 transitions. [2022-11-20 12:38:37,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2196 transitions. [2022-11-20 12:38:37,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:37,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2196 transitions. [2022-11-20 12:38:37,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.5) internal successors, (2196), 8 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 12:38:37,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:37,198 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:37,198 INFO L175 Difference]: Start difference. First operand has 295 places, 280 transitions, 660 flow. Second operand 8 states and 2196 transitions. [2022-11-20 12:38:37,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 298 transitions, 821 flow [2022-11-20 12:38:37,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 298 transitions, 812 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:38:37,205 INFO L231 Difference]: Finished difference. Result has 300 places, 281 transitions, 681 flow [2022-11-20 12:38:37,205 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=300, PETRI_TRANSITIONS=281} [2022-11-20 12:38:37,206 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 25 predicate places. [2022-11-20 12:38:37,207 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 281 transitions, 681 flow [2022-11-20 12:38:37,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.125) internal successors, (2161), 8 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states 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 12:38:37,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:37,208 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] [2022-11-20 12:38:37,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:38:37,208 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1373355991, now seen corresponding path program 1 times [2022-11-20 12:38:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:37,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800396280] [2022-11-20 12:38:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:37,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:37,296 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 12:38:37,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:37,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800396280] [2022-11-20 12:38:37,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800396280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:37,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:37,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:37,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282619952] [2022-11-20 12:38:37,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:37,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:38:37,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:37,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:37,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:37,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-20 12:38:37,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 281 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states 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 12:38:37,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:37,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-20 12:38:37,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:37,829 INFO L130 PetriNetUnfolder]: 201/1555 cut-off events. [2022-11-20 12:38:37,829 INFO L131 PetriNetUnfolder]: For 197/761 co-relation queries the response was YES. [2022-11-20 12:38:37,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 1555 events. 201/1555 cut-off events. For 197/761 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13101 event pairs, 90 based on Foata normal form. 6/1321 useless extension candidates. Maximal degree in co-relation 2023. Up to 218 conditions per place. [2022-11-20 12:38:37,948 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 33 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-20 12:38:37,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 292 transitions, 780 flow [2022-11-20 12:38:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:38:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1141 transitions. [2022-11-20 12:38:37,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9113418530351438 [2022-11-20 12:38:37,953 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1141 transitions. [2022-11-20 12:38:37,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1141 transitions. [2022-11-20 12:38:37,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:37,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1141 transitions. [2022-11-20 12:38:37,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:38:37,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:37,959 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:37,959 INFO L175 Difference]: Start difference. First operand has 300 places, 281 transitions, 681 flow. Second operand 4 states and 1141 transitions. [2022-11-20 12:38:37,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 292 transitions, 780 flow [2022-11-20 12:38:37,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 292 transitions, 769 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:38:37,965 INFO L231 Difference]: Finished difference. Result has 298 places, 281 transitions, 679 flow [2022-11-20 12:38:37,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=298, PETRI_TRANSITIONS=281} [2022-11-20 12:38:37,967 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 23 predicate places. [2022-11-20 12:38:37,967 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 281 transitions, 679 flow [2022-11-20 12:38:37,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states 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 12:38:37,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:37,968 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] [2022-11-20 12:38:37,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:38:37,969 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:37,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:37,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1347007374, now seen corresponding path program 1 times [2022-11-20 12:38:37,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:37,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449629198] [2022-11-20 12:38:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:37,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:38,114 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 12:38:38,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:38,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449629198] [2022-11-20 12:38:38,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449629198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:38,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:38,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:38,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436825957] [2022-11-20 12:38:38,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:38,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:38,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:38,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:38,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:38,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-20 12:38:38,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 281 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 269.3333333333333) internal successors, (1616), 6 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states 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 12:38:38,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:38,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-20 12:38:38,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:38,544 INFO L130 PetriNetUnfolder]: 127/1134 cut-off events. [2022-11-20 12:38:38,545 INFO L131 PetriNetUnfolder]: For 94/100 co-relation queries the response was YES. [2022-11-20 12:38:38,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 1134 events. 127/1134 cut-off events. For 94/100 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8221 event pairs, 58 based on Foata normal form. 3/1045 useless extension candidates. Maximal degree in co-relation 1665. Up to 154 conditions per place. [2022-11-20 12:38:38,583 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 46 selfloop transitions, 7 changer transitions 0/297 dead transitions. [2022-11-20 12:38:38,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 297 transitions, 832 flow [2022-11-20 12:38:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:38:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:38:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1915 transitions. [2022-11-20 12:38:38,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740301232314012 [2022-11-20 12:38:38,589 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1915 transitions. [2022-11-20 12:38:38,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1915 transitions. [2022-11-20 12:38:38,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:38,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1915 transitions. [2022-11-20 12:38:38,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.57142857142856) internal successors, (1915), 7 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states 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 12:38:38,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:38,598 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:38,598 INFO L175 Difference]: Start difference. First operand has 298 places, 281 transitions, 679 flow. Second operand 7 states and 1915 transitions. [2022-11-20 12:38:38,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 297 transitions, 832 flow [2022-11-20 12:38:38,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 297 transitions, 828 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:38:38,605 INFO L231 Difference]: Finished difference. Result has 305 places, 284 transitions, 711 flow [2022-11-20 12:38:38,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=711, PETRI_PLACES=305, PETRI_TRANSITIONS=284} [2022-11-20 12:38:38,607 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 30 predicate places. [2022-11-20 12:38:38,607 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 284 transitions, 711 flow [2022-11-20 12:38:38,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.3333333333333) internal successors, (1616), 6 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states 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 12:38:38,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:38,608 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] [2022-11-20 12:38:38,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:38:38,609 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:38,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1919475404, now seen corresponding path program 1 times [2022-11-20 12:38:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:38,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141204445] [2022-11-20 12:38:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:38,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:38,745 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 12:38:38,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:38,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141204445] [2022-11-20 12:38:38,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141204445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:38,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:38,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:38,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434190135] [2022-11-20 12:38:38,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:38,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:38,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:38,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:38,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:38,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-20 12:38:38,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 284 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 269.5) internal successors, (1617), 6 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 12:38:38,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:38,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-20 12:38:38,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:39,238 INFO L130 PetriNetUnfolder]: 119/1123 cut-off events. [2022-11-20 12:38:39,239 INFO L131 PetriNetUnfolder]: For 120/126 co-relation queries the response was YES. [2022-11-20 12:38:39,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 1123 events. 119/1123 cut-off events. For 120/126 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8201 event pairs, 48 based on Foata normal form. 3/1048 useless extension candidates. Maximal degree in co-relation 1702. Up to 129 conditions per place. [2022-11-20 12:38:39,270 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 55 selfloop transitions, 8 changer transitions 0/307 dead transitions. [2022-11-20 12:38:39,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 307 transitions, 920 flow [2022-11-20 12:38:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:38:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:38:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1921 transitions. [2022-11-20 12:38:39,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8767685988133272 [2022-11-20 12:38:39,276 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1921 transitions. [2022-11-20 12:38:39,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1921 transitions. [2022-11-20 12:38:39,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:39,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1921 transitions. [2022-11-20 12:38:39,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.42857142857144) internal successors, (1921), 7 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states 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 12:38:39,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:39,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:39,286 INFO L175 Difference]: Start difference. First operand has 305 places, 284 transitions, 711 flow. Second operand 7 states and 1921 transitions. [2022-11-20 12:38:39,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 307 transitions, 920 flow [2022-11-20 12:38:39,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 307 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:38:39,294 INFO L231 Difference]: Finished difference. Result has 313 places, 288 transitions, 758 flow [2022-11-20 12:38:39,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=758, PETRI_PLACES=313, PETRI_TRANSITIONS=288} [2022-11-20 12:38:39,295 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 38 predicate places. [2022-11-20 12:38:39,295 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 288 transitions, 758 flow [2022-11-20 12:38:39,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.5) internal successors, (1617), 6 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 12:38:39,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:39,296 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] [2022-11-20 12:38:39,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:38:39,297 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:39,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1349227944, now seen corresponding path program 1 times [2022-11-20 12:38:39,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:39,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365338348] [2022-11-20 12:38:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:39,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:39,359 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 12:38:39,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:39,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365338348] [2022-11-20 12:38:39,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365338348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:39,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:39,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:39,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020541899] [2022-11-20 12:38:39,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:39,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:38:39,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:39,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:39,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-20 12:38:39,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 288 transitions, 758 flow. Second operand has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states 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 12:38:39,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:39,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-20 12:38:39,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:40,272 INFO L130 PetriNetUnfolder]: 590/2942 cut-off events. [2022-11-20 12:38:40,272 INFO L131 PetriNetUnfolder]: For 828/1226 co-relation queries the response was YES. [2022-11-20 12:38:40,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4478 conditions, 2942 events. 590/2942 cut-off events. For 828/1226 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 32119 event pairs, 240 based on Foata normal form. 21/2291 useless extension candidates. Maximal degree in co-relation 4386. Up to 516 conditions per place. [2022-11-20 12:38:40,308 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 35 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-20 12:38:40,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 298 transitions, 854 flow [2022-11-20 12:38:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:38:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1143 transitions. [2022-11-20 12:38:40,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9129392971246006 [2022-11-20 12:38:40,312 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1143 transitions. [2022-11-20 12:38:40,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1143 transitions. [2022-11-20 12:38:40,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:40,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1143 transitions. [2022-11-20 12:38:40,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states 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 12:38:40,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:40,319 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:40,319 INFO L175 Difference]: Start difference. First operand has 313 places, 288 transitions, 758 flow. Second operand 4 states and 1143 transitions. [2022-11-20 12:38:40,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 298 transitions, 854 flow [2022-11-20 12:38:40,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 298 transitions, 852 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:38:40,326 INFO L231 Difference]: Finished difference. Result has 315 places, 287 transitions, 756 flow [2022-11-20 12:38:40,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=756, PETRI_PLACES=315, PETRI_TRANSITIONS=287} [2022-11-20 12:38:40,327 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 40 predicate places. [2022-11-20 12:38:40,327 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 287 transitions, 756 flow [2022-11-20 12:38:40,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states 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 12:38:40,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:40,328 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] [2022-11-20 12:38:40,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:38:40,329 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash 625602379, now seen corresponding path program 1 times [2022-11-20 12:38:40,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:40,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040874669] [2022-11-20 12:38:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:40,456 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 12:38:40,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:40,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040874669] [2022-11-20 12:38:40,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040874669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:40,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:40,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:38:40,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065450066] [2022-11-20 12:38:40,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:38:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:38:40,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:38:40,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-20 12:38:40,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 287 transitions, 756 flow. Second operand has 8 states, 8 states have (on average 270.125) internal successors, (2161), 8 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states 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 12:38:40,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:40,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-20 12:38:40,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:41,196 INFO L130 PetriNetUnfolder]: 300/1869 cut-off events. [2022-11-20 12:38:41,196 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2022-11-20 12:38:41,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3079 conditions, 1869 events. 300/1869 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15782 event pairs, 2 based on Foata normal form. 0/1678 useless extension candidates. Maximal degree in co-relation 3004. Up to 300 conditions per place. [2022-11-20 12:38:41,242 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 39 selfloop transitions, 9 changer transitions 0/302 dead transitions. [2022-11-20 12:38:41,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 302 transitions, 895 flow [2022-11-20 12:38:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:38:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:38:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2193 transitions. [2022-11-20 12:38:41,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8757987220447284 [2022-11-20 12:38:41,248 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2193 transitions. [2022-11-20 12:38:41,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2193 transitions. [2022-11-20 12:38:41,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:41,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2193 transitions. [2022-11-20 12:38:41,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.125) internal successors, (2193), 8 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states 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 12:38:41,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:41,259 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:41,260 INFO L175 Difference]: Start difference. First operand has 315 places, 287 transitions, 756 flow. Second operand 8 states and 2193 transitions. [2022-11-20 12:38:41,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 302 transitions, 895 flow [2022-11-20 12:38:41,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 302 transitions, 890 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:38:41,268 INFO L231 Difference]: Finished difference. Result has 322 places, 288 transitions, 781 flow [2022-11-20 12:38:41,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=781, PETRI_PLACES=322, PETRI_TRANSITIONS=288} [2022-11-20 12:38:41,269 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 47 predicate places. [2022-11-20 12:38:41,269 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 288 transitions, 781 flow [2022-11-20 12:38:41,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.125) internal successors, (2161), 8 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states 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 12:38:41,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:41,270 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] [2022-11-20 12:38:41,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:38:41,270 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:41,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:41,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1123605743, now seen corresponding path program 1 times [2022-11-20 12:38:41,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:41,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880078846] [2022-11-20 12:38:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:41,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:41,374 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 12:38:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:41,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880078846] [2022-11-20 12:38:41,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880078846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:41,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:41,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668043757] [2022-11-20 12:38:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:41,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:41,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-20 12:38:41,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 288 transitions, 781 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states 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 12:38:41,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:41,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-20 12:38:41,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:42,333 INFO L130 PetriNetUnfolder]: 681/3532 cut-off events. [2022-11-20 12:38:42,334 INFO L131 PetriNetUnfolder]: For 780/988 co-relation queries the response was YES. [2022-11-20 12:38:42,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 3532 events. 681/3532 cut-off events. For 780/988 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 36485 event pairs, 5 based on Foata normal form. 0/2935 useless extension candidates. Maximal degree in co-relation 4106. Up to 1126 conditions per place. [2022-11-20 12:38:42,393 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 29 selfloop transitions, 5 changer transitions 0/293 dead transitions. [2022-11-20 12:38:42,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 293 transitions, 867 flow [2022-11-20 12:38:42,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:38:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:38:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1673 transitions. [2022-11-20 12:38:42,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8908413205537806 [2022-11-20 12:38:42,400 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1673 transitions. [2022-11-20 12:38:42,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1673 transitions. [2022-11-20 12:38:42,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:42,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1673 transitions. [2022-11-20 12:38:42,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 278.8333333333333) internal successors, (1673), 6 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states 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 12:38:42,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:42,411 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states 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 12:38:42,412 INFO L175 Difference]: Start difference. First operand has 322 places, 288 transitions, 781 flow. Second operand 6 states and 1673 transitions. [2022-11-20 12:38:42,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 293 transitions, 867 flow [2022-11-20 12:38:42,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 293 transitions, 854 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:38:42,419 INFO L231 Difference]: Finished difference. Result has 322 places, 287 transitions, 780 flow [2022-11-20 12:38:42,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=322, PETRI_TRANSITIONS=287} [2022-11-20 12:38:42,420 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 47 predicate places. [2022-11-20 12:38:42,421 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 287 transitions, 780 flow [2022-11-20 12:38:42,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states 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 12:38:42,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:42,422 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] [2022-11-20 12:38:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:38:42,422 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:42,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2081161838, now seen corresponding path program 1 times [2022-11-20 12:38:42,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:42,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436182269] [2022-11-20 12:38:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:42,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:42,571 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 12:38:42,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:42,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436182269] [2022-11-20 12:38:42,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436182269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:42,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:42,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:38:42,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110977829] [2022-11-20 12:38:42,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:42,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:38:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:42,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:38:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:38:42,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-20 12:38:42,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 287 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states 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 12:38:42,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:42,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-20 12:38:42,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:43,274 INFO L130 PetriNetUnfolder]: 252/1804 cut-off events. [2022-11-20 12:38:43,274 INFO L131 PetriNetUnfolder]: For 321/321 co-relation queries the response was YES. [2022-11-20 12:38:43,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 1804 events. 252/1804 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14879 event pairs, 2 based on Foata normal form. 0/1656 useless extension candidates. Maximal degree in co-relation 2928. Up to 268 conditions per place. [2022-11-20 12:38:43,320 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 42 selfloop transitions, 9 changer transitions 0/304 dead transitions. [2022-11-20 12:38:43,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 304 transitions, 936 flow [2022-11-20 12:38:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:38:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:38:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2195 transitions. [2022-11-20 12:38:43,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765974440894568 [2022-11-20 12:38:43,325 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2195 transitions. [2022-11-20 12:38:43,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2195 transitions. [2022-11-20 12:38:43,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:43,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2195 transitions. [2022-11-20 12:38:43,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states 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 12:38:43,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:43,334 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:43,335 INFO L175 Difference]: Start difference. First operand has 322 places, 287 transitions, 780 flow. Second operand 8 states and 2195 transitions. [2022-11-20 12:38:43,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 304 transitions, 936 flow [2022-11-20 12:38:43,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 304 transitions, 927 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:38:43,342 INFO L231 Difference]: Finished difference. Result has 327 places, 288 transitions, 801 flow [2022-11-20 12:38:43,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=801, PETRI_PLACES=327, PETRI_TRANSITIONS=288} [2022-11-20 12:38:43,344 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 52 predicate places. [2022-11-20 12:38:43,344 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 288 transitions, 801 flow [2022-11-20 12:38:43,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states 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 12:38:43,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:43,345 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] [2022-11-20 12:38:43,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:38:43,346 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash -872968940, now seen corresponding path program 1 times [2022-11-20 12:38:43,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:43,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222041841] [2022-11-20 12:38:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:43,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:43,409 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 12:38:43,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:43,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222041841] [2022-11-20 12:38:43,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222041841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:43,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:43,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235820096] [2022-11-20 12:38:43,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:43,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:38:43,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:43,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:43,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:43,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-20 12:38:43,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 288 transitions, 801 flow. Second operand has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 12:38:43,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:43,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-20 12:38:43,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:44,557 INFO L130 PetriNetUnfolder]: 729/3644 cut-off events. [2022-11-20 12:38:44,557 INFO L131 PetriNetUnfolder]: For 807/1281 co-relation queries the response was YES. [2022-11-20 12:38:44,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5518 conditions, 3644 events. 729/3644 cut-off events. For 807/1281 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 41615 event pairs, 360 based on Foata normal form. 21/2837 useless extension candidates. Maximal degree in co-relation 5419. Up to 762 conditions per place. [2022-11-20 12:38:44,595 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 32 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-20 12:38:44,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 298 transitions, 893 flow [2022-11-20 12:38:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:38:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-20 12:38:44,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9105431309904153 [2022-11-20 12:38:44,599 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-20 12:38:44,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-20 12:38:44,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:44,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-20 12:38:44,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:38:44,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:44,607 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 12:38:44,607 INFO L175 Difference]: Start difference. First operand has 327 places, 288 transitions, 801 flow. Second operand 4 states and 1140 transitions. [2022-11-20 12:38:44,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 298 transitions, 893 flow [2022-11-20 12:38:44,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 298 transitions, 882 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:38:44,616 INFO L231 Difference]: Finished difference. Result has 325 places, 288 transitions, 799 flow [2022-11-20 12:38:44,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=799, PETRI_PLACES=325, PETRI_TRANSITIONS=288} [2022-11-20 12:38:44,617 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 50 predicate places. [2022-11-20 12:38:44,617 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 288 transitions, 799 flow [2022-11-20 12:38:44,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 12:38:44,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:44,618 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] [2022-11-20 12:38:44,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:38:44,619 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1231209654, now seen corresponding path program 1 times [2022-11-20 12:38:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:44,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887465892] [2022-11-20 12:38:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:44,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:44,748 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 12:38:44,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:44,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887465892] [2022-11-20 12:38:44,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887465892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:44,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:44,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:44,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984072775] [2022-11-20 12:38:44,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:44,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:44,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:44,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:44,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-20 12:38:44,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 288 transitions, 799 flow. Second operand has 6 states, 6 states have (on average 269.5) internal successors, (1617), 6 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 12:38:44,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:44,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-20 12:38:44,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:45,595 INFO L130 PetriNetUnfolder]: 282/1538 cut-off events. [2022-11-20 12:38:45,595 INFO L131 PetriNetUnfolder]: For 398/899 co-relation queries the response was YES. [2022-11-20 12:38:45,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 1538 events. 282/1538 cut-off events. For 398/899 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 13663 event pairs, 145 based on Foata normal form. 6/1326 useless extension candidates. Maximal degree in co-relation 2470. Up to 331 conditions per place. [2022-11-20 12:38:45,650 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 45 selfloop transitions, 7 changer transitions 0/303 dead transitions. [2022-11-20 12:38:45,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 303 transitions, 947 flow [2022-11-20 12:38:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:38:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:38:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1914 transitions. [2022-11-20 12:38:45,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8735737106344135 [2022-11-20 12:38:45,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1914 transitions. [2022-11-20 12:38:45,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1914 transitions. [2022-11-20 12:38:45,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:45,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1914 transitions. [2022-11-20 12:38:45,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.42857142857144) internal successors, (1914), 7 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 12:38:45,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:45,663 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:45,664 INFO L175 Difference]: Start difference. First operand has 325 places, 288 transitions, 799 flow. Second operand 7 states and 1914 transitions. [2022-11-20 12:38:45,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 303 transitions, 947 flow [2022-11-20 12:38:45,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 303 transitions, 943 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:38:45,672 INFO L231 Difference]: Finished difference. Result has 332 places, 291 transitions, 831 flow [2022-11-20 12:38:45,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=831, PETRI_PLACES=332, PETRI_TRANSITIONS=291} [2022-11-20 12:38:45,673 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 57 predicate places. [2022-11-20 12:38:45,673 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 291 transitions, 831 flow [2022-11-20 12:38:45,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.5) internal successors, (1617), 6 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 12:38:45,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:45,674 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] [2022-11-20 12:38:45,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:38:45,674 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash 239824720, now seen corresponding path program 1 times [2022-11-20 12:38:45,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:45,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126389778] [2022-11-20 12:38:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:45,785 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 12:38:45,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:45,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126389778] [2022-11-20 12:38:45,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126389778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:45,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:45,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:45,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093669316] [2022-11-20 12:38:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:45,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:45,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-20 12:38:45,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 291 transitions, 831 flow. Second operand has 6 states, 6 states have (on average 269.6666666666667) internal successors, (1618), 6 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states 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 12:38:45,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:45,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-20 12:38:45,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:46,433 INFO L130 PetriNetUnfolder]: 262/1512 cut-off events. [2022-11-20 12:38:46,434 INFO L131 PetriNetUnfolder]: For 438/903 co-relation queries the response was YES. [2022-11-20 12:38:46,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 1512 events. 262/1512 cut-off events. For 438/903 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 13390 event pairs, 120 based on Foata normal form. 6/1342 useless extension candidates. Maximal degree in co-relation 2558. Up to 276 conditions per place. [2022-11-20 12:38:46,483 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 54 selfloop transitions, 8 changer transitions 0/313 dead transitions. [2022-11-20 12:38:46,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 313 transitions, 1035 flow [2022-11-20 12:38:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:38:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:38:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1920 transitions. [2022-11-20 12:38:46,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763121862163396 [2022-11-20 12:38:46,487 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1920 transitions. [2022-11-20 12:38:46,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1920 transitions. [2022-11-20 12:38:46,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:46,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1920 transitions. [2022-11-20 12:38:46,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.2857142857143) internal successors, (1920), 7 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states 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 12:38:46,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:46,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:46,496 INFO L175 Difference]: Start difference. First operand has 332 places, 291 transitions, 831 flow. Second operand 7 states and 1920 transitions. [2022-11-20 12:38:46,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 313 transitions, 1035 flow [2022-11-20 12:38:46,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 313 transitions, 1033 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:38:46,505 INFO L231 Difference]: Finished difference. Result has 340 places, 295 transitions, 878 flow [2022-11-20 12:38:46,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=340, PETRI_TRANSITIONS=295} [2022-11-20 12:38:46,506 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 65 predicate places. [2022-11-20 12:38:46,506 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 295 transitions, 878 flow [2022-11-20 12:38:46,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.6666666666667) internal successors, (1618), 6 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states 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 12:38:46,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:46,507 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] [2022-11-20 12:38:46,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:38:46,508 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1571332278, now seen corresponding path program 1 times [2022-11-20 12:38:46,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:46,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645341615] [2022-11-20 12:38:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:46,652 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 12:38:46,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:46,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645341615] [2022-11-20 12:38:46,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645341615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:46,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:46,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:38:46,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687036971] [2022-11-20 12:38:46,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:46,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:38:46,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:46,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:38:46,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:38:46,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-20 12:38:46,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 295 transitions, 878 flow. Second operand has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states 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 12:38:46,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:46,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-20 12:38:46,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:47,773 INFO L130 PetriNetUnfolder]: 767/4009 cut-off events. [2022-11-20 12:38:47,774 INFO L131 PetriNetUnfolder]: For 962/1190 co-relation queries the response was YES. [2022-11-20 12:38:47,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 4009 events. 767/4009 cut-off events. For 962/1190 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 45380 event pairs, 2 based on Foata normal form. 0/3274 useless extension candidates. Maximal degree in co-relation 5862. Up to 774 conditions per place. [2022-11-20 12:38:47,824 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 38 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2022-11-20 12:38:47,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 309 transitions, 1008 flow [2022-11-20 12:38:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:38:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:38:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2192 transitions. [2022-11-20 12:38:47,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753993610223643 [2022-11-20 12:38:47,828 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2192 transitions. [2022-11-20 12:38:47,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2192 transitions. [2022-11-20 12:38:47,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:47,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2192 transitions. [2022-11-20 12:38:47,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states 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 12:38:47,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:47,838 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:47,838 INFO L175 Difference]: Start difference. First operand has 340 places, 295 transitions, 878 flow. Second operand 8 states and 2192 transitions. [2022-11-20 12:38:47,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 309 transitions, 1008 flow [2022-11-20 12:38:47,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 309 transitions, 1008 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:38:47,848 INFO L231 Difference]: Finished difference. Result has 349 places, 296 transitions, 908 flow [2022-11-20 12:38:47,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=908, PETRI_PLACES=349, PETRI_TRANSITIONS=296} [2022-11-20 12:38:47,849 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 74 predicate places. [2022-11-20 12:38:47,849 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 296 transitions, 908 flow [2022-11-20 12:38:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states 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 12:38:47,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:47,850 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] [2022-11-20 12:38:47,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:38:47,850 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:47,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:47,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1466661327, now seen corresponding path program 1 times [2022-11-20 12:38:47,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:47,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360310138] [2022-11-20 12:38:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:47,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:47,977 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 12:38:47,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:47,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360310138] [2022-11-20 12:38:47,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360310138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:47,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:47,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:38:47,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092425362] [2022-11-20 12:38:47,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:47,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:38:47,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:47,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:38:47,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:38:47,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-20 12:38:47,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 296 transitions, 908 flow. Second operand has 8 states, 8 states have (on average 270.375) internal successors, (2163), 8 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 12:38:47,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:47,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-20 12:38:47,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:49,121 INFO L130 PetriNetUnfolder]: 641/3839 cut-off events. [2022-11-20 12:38:49,121 INFO L131 PetriNetUnfolder]: For 1042/1234 co-relation queries the response was YES. [2022-11-20 12:38:49,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6274 conditions, 3839 events. 641/3839 cut-off events. For 1042/1234 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 42394 event pairs, 2 based on Foata normal form. 0/3260 useless extension candidates. Maximal degree in co-relation 5742. Up to 688 conditions per place. [2022-11-20 12:38:49,174 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 41 selfloop transitions, 9 changer transitions 0/312 dead transitions. [2022-11-20 12:38:49,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 312 transitions, 1055 flow [2022-11-20 12:38:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:38:49,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:38:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2194 transitions. [2022-11-20 12:38:49,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761980830670927 [2022-11-20 12:38:49,180 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2194 transitions. [2022-11-20 12:38:49,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2194 transitions. [2022-11-20 12:38:49,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:49,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2194 transitions. [2022-11-20 12:38:49,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states 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 12:38:49,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:49,189 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:38:49,189 INFO L175 Difference]: Start difference. First operand has 349 places, 296 transitions, 908 flow. Second operand 8 states and 2194 transitions. [2022-11-20 12:38:49,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 312 transitions, 1055 flow [2022-11-20 12:38:49,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 312 transitions, 1046 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:38:49,201 INFO L231 Difference]: Finished difference. Result has 354 places, 297 transitions, 929 flow [2022-11-20 12:38:49,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=929, PETRI_PLACES=354, PETRI_TRANSITIONS=297} [2022-11-20 12:38:49,202 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 79 predicate places. [2022-11-20 12:38:49,202 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 297 transitions, 929 flow [2022-11-20 12:38:49,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.375) internal successors, (2163), 8 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 12:38:49,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:49,203 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] [2022-11-20 12:38:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:38:49,204 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:49,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash 485240499, now seen corresponding path program 1 times [2022-11-20 12:38:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:49,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712255407] [2022-11-20 12:38:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:49,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:49,318 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 12:38:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712255407] [2022-11-20 12:38:49,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712255407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:49,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:49,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:49,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881626832] [2022-11-20 12:38:49,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:49,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:49,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:49,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:49,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-20 12:38:49,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 297 transitions, 929 flow. Second operand has 6 states, 6 states have (on average 269.6666666666667) internal successors, (1618), 6 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states 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 12:38:49,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:49,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-20 12:38:49,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:50,623 INFO L130 PetriNetUnfolder]: 1089/3892 cut-off events. [2022-11-20 12:38:50,623 INFO L131 PetriNetUnfolder]: For 1633/2097 co-relation queries the response was YES. [2022-11-20 12:38:50,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7195 conditions, 3892 events. 1089/3892 cut-off events. For 1633/2097 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 48499 event pairs, 580 based on Foata normal form. 23/3005 useless extension candidates. Maximal degree in co-relation 7085. Up to 1213 conditions per place. [2022-11-20 12:38:50,674 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 40 selfloop transitions, 7 changer transitions 4/311 dead transitions. [2022-11-20 12:38:50,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 311 transitions, 1067 flow [2022-11-20 12:38:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:38:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:38:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1913 transitions. [2022-11-20 12:38:50,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8731172980374259 [2022-11-20 12:38:50,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1913 transitions. [2022-11-20 12:38:50,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1913 transitions. [2022-11-20 12:38:50,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:50,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1913 transitions. [2022-11-20 12:38:50,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.2857142857143) internal successors, (1913), 7 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states 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 12:38:50,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:50,686 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:50,687 INFO L175 Difference]: Start difference. First operand has 354 places, 297 transitions, 929 flow. Second operand 7 states and 1913 transitions. [2022-11-20 12:38:50,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 311 transitions, 1067 flow [2022-11-20 12:38:50,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 311 transitions, 1056 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:38:50,702 INFO L231 Difference]: Finished difference. Result has 358 places, 300 transitions, 954 flow [2022-11-20 12:38:50,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=954, PETRI_PLACES=358, PETRI_TRANSITIONS=300} [2022-11-20 12:38:50,704 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 83 predicate places. [2022-11-20 12:38:50,704 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 300 transitions, 954 flow [2022-11-20 12:38:50,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.6666666666667) internal successors, (1618), 6 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states 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 12:38:50,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:38:50,705 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] [2022-11-20 12:38:50,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 12:38:50,705 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:38:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1410382533, now seen corresponding path program 1 times [2022-11-20 12:38:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:50,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946177292] [2022-11-20 12:38:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:50,868 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 12:38:50,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:50,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946177292] [2022-11-20 12:38:50,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946177292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:50,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:50,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:38:50,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328059335] [2022-11-20 12:38:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:50,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:38:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:50,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-20 12:38:50,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 300 transitions, 954 flow. Second operand has 6 states, 6 states have (on average 269.8333333333333) internal successors, (1619), 6 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states 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 12:38:50,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:38:50,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-20 12:38:50,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:38:52,056 INFO L130 PetriNetUnfolder]: 1009/3791 cut-off events. [2022-11-20 12:38:52,056 INFO L131 PetriNetUnfolder]: For 1716/2154 co-relation queries the response was YES. [2022-11-20 12:38:52,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7516 conditions, 3791 events. 1009/3791 cut-off events. For 1716/2154 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 46088 event pairs, 480 based on Foata normal form. 21/3069 useless extension candidates. Maximal degree in co-relation 7407. Up to 1008 conditions per place. [2022-11-20 12:38:52,105 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 0 selfloop transitions, 0 changer transitions 321/321 dead transitions. [2022-11-20 12:38:52,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 321 transitions, 1148 flow [2022-11-20 12:38:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:38:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:38:52,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1919 transitions. [2022-11-20 12:38:52,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8758557736193519 [2022-11-20 12:38:52,109 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1919 transitions. [2022-11-20 12:38:52,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1919 transitions. [2022-11-20 12:38:52,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:52,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1919 transitions. [2022-11-20 12:38:52,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.14285714285717) internal successors, (1919), 7 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states 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 12:38:52,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:52,116 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states 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 12:38:52,116 INFO L175 Difference]: Start difference. First operand has 358 places, 300 transitions, 954 flow. Second operand 7 states and 1919 transitions. [2022-11-20 12:38:52,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 321 transitions, 1148 flow [2022-11-20 12:38:52,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 321 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:38:52,136 INFO L231 Difference]: Finished difference. Result has 362 places, 0 transitions, 0 flow [2022-11-20 12:38:52,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=362, PETRI_TRANSITIONS=0} [2022-11-20 12:38:52,137 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 87 predicate places. [2022-11-20 12:38:52,137 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 0 transitions, 0 flow [2022-11-20 12:38:52,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.8333333333333) internal successors, (1619), 6 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states 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 12:38:52,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-20 12:38:52,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-20 12:38:52,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-20 12:38:52,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-20 12:38:52,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-20 12:38:52,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-20 12:38:52,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-20 12:38:52,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-20 12:38:52,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-20 12:38:52,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-20 12:38:52,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-20 12:38:52,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-20 12:38:52,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-20 12:38:52,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-20 12:38:52,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-20 12:38:52,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-20 12:38:52,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-20 12:38:52,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-20 12:38:52,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-20 12:38:52,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-20 12:38:52,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-20 12:38:52,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-20 12:38:52,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-20 12:38:52,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-20 12:38:52,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-20 12:38:52,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-20 12:38:52,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-20 12:38:52,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-20 12:38:52,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-20 12:38:52,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-20 12:38:52,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-20 12:38:52,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-20 12:38:52,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-20 12:38:52,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-20 12:38:52,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-20 12:38:52,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-20 12:38:52,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-20 12:38:52,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-20 12:38:52,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-20 12:38:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 12:38:52,150 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-20 12:38:52,156 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:38:52,156 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:38:52,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:38:52 BasicIcfg [2022-11-20 12:38:52,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:38:52,161 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:38:52,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:38:52,162 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:38:52,162 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:38:27" (3/4) ... [2022-11-20 12:38:52,165 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:38:52,171 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:38:52,171 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:38:52,172 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 12:38:52,176 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-20 12:38:52,176 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:38:52,176 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:38:52,177 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:38:52,234 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:38:52,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:38:52,235 INFO L158 Benchmark]: Toolchain (without parser) took 25548.15ms. Allocated memory was 199.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 154.3MB in the beginning and 610.8MB in the end (delta: -456.5MB). Peak memory consumption was 652.7MB. Max. memory is 16.1GB. [2022-11-20 12:38:52,235 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:38:52,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.95ms. Allocated memory is still 199.2MB. Free memory was 154.3MB in the beginning and 143.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:38:52,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.40ms. Allocated memory is still 199.2MB. Free memory was 143.0MB in the beginning and 140.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:38:52,236 INFO L158 Benchmark]: Boogie Preprocessor took 61.91ms. Allocated memory is still 199.2MB. Free memory was 140.5MB in the beginning and 138.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:38:52,236 INFO L158 Benchmark]: RCFGBuilder took 799.73ms. Allocated memory is still 199.2MB. Free memory was 138.4MB in the beginning and 115.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 12:38:52,237 INFO L158 Benchmark]: TraceAbstraction took 24264.32ms. Allocated memory was 199.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 114.5MB in the beginning and 614.0MB in the end (delta: -499.5MB). Peak memory consumption was 608.6MB. Max. memory is 16.1GB. [2022-11-20 12:38:52,237 INFO L158 Benchmark]: Witness Printer took 72.70ms. Allocated memory is still 1.3GB. Free memory was 614.0MB in the beginning and 610.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:38:52,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.95ms. Allocated memory is still 199.2MB. Free memory was 154.3MB in the beginning and 143.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.40ms. Allocated memory is still 199.2MB. Free memory was 143.0MB in the beginning and 140.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.91ms. Allocated memory is still 199.2MB. Free memory was 140.5MB in the beginning and 138.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 799.73ms. Allocated memory is still 199.2MB. Free memory was 138.4MB in the beginning and 115.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 24264.32ms. Allocated memory was 199.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 114.5MB in the beginning and 614.0MB in the end (delta: -499.5MB). Peak memory consumption was 608.6MB. Max. memory is 16.1GB. * Witness Printer took 72.70ms. Allocated memory is still 1.3GB. Free memory was 614.0MB in the beginning and 610.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 487 locations, 39 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: 24.0s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1499 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1499 mSDsluCounter, 736 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 367 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2365 IncrementalHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 369 mSDtfsCounter, 2365 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=954occurred in iteration=26, InterpolantAutomatonStates: 162, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2229 NumberOfCodeBlocks, 2229 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2202 ConstructedInterpolants, 0 QuantifiedInterpolants, 4737 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:38:52,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c592df1-0680-4ac0-8654-4c8cfdf42a0f/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