./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:00:53,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:00:53,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:00:53,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:00:53,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:00:53,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:00:53,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:00:53,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:00:53,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:00:53,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:00:53,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:00:53,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:00:53,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:00:53,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:00:53,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:00:53,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:00:53,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:00:53,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:00:53,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:00:53,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:00:53,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:00:53,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:00:53,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:00:53,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:00:53,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:00:53,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:00:53,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:00:53,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:00:53,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:00:53,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:00:53,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:00:53,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:00:53,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:00:53,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:00:53,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:00:53,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:00:53,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:00:53,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:00:53,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:00:53,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:00:53,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:00:53,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:00:53,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:00:53,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:00:53,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:00:53,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:00:53,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:00:53,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:00:53,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:00:53,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:00:53,993 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:00:53,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:00:53,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:00:53,995 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:00:53,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:00:53,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:00:53,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:00:53,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:00:53,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:00:53,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:00:53,996 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:00:53,996 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:00:53,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:00:53,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:00:53,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:00:53,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:00:53,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:00:53,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:00:53,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:00:54,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:00:54,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:00:54,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:00:54,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:00:54,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:00:54,002 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:00:54,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:00:54,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:00:54,002 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_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e [2022-11-18 20:00:54,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:00:54,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:00:54,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:00:54,355 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:00:54,356 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:00:54,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-18 20:00:54,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/data/02b2d622f/e7b224e3f6a842af801ad17b457bc0fb/FLAG27c73ff61 [2022-11-18 20:00:55,075 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:00:55,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-18 20:00:55,090 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/data/02b2d622f/e7b224e3f6a842af801ad17b457bc0fb/FLAG27c73ff61 [2022-11-18 20:00:55,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/data/02b2d622f/e7b224e3f6a842af801ad17b457bc0fb [2022-11-18 20:00:55,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:00:55,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:00:55,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:00:55,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:00:55,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:00:55,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e8e33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55, skipping insertion in model container [2022-11-18 20:00:55,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:00:55,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:00:55,691 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-18 20:00:55,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:00:55,709 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:00:55,737 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-18 20:00:55,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:00:55,757 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:00:55,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55 WrapperNode [2022-11-18 20:00:55,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:00:55,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:00:55,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:00:55,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:00:55,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,808 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 222 [2022-11-18 20:00:55,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:00:55,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:00:55,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:00:55,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:00:55,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:00:55,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:00:55,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:00:55,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:00:55,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (1/1) ... [2022-11-18 20:00:55,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:00:55,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:00:55,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:00:55,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1f17b2-84eb-4619-b24a-e293b8869247/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:00:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:00:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:00:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:00:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:00:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:00:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:00:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:00:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:00:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:00:55,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:00:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:00:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:00:55,956 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:00:56,126 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:00:56,131 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:00:56,808 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:00:56,823 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:00:56,823 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:00:56,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:00:56 BoogieIcfgContainer [2022-11-18 20:00:56,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:00:56,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:00:56,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:00:56,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:00:56,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:00:55" (1/3) ... [2022-11-18 20:00:56,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f5b46c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:00:56, skipping insertion in model container [2022-11-18 20:00:56,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:00:55" (2/3) ... [2022-11-18 20:00:56,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f5b46c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:00:56, skipping insertion in model container [2022-11-18 20:00:56,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:00:56" (3/3) ... [2022-11-18 20:00:56,839 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2022-11-18 20:00:56,852 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:00:56,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:00:56,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-18 20:00:56,867 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:00:57,081 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:00:57,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 315 transitions, 646 flow [2022-11-18 20:00:57,291 INFO L130 PetriNetUnfolder]: 22/313 cut-off events. [2022-11-18 20:00:57,292 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:00:57,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 313 events. 22/313 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 597 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2022-11-18 20:00:57,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 315 transitions, 646 flow [2022-11-18 20:00:57,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 294 transitions, 597 flow [2022-11-18 20:00:57,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:00:57,339 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;@650dd89c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:00:57,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-11-18 20:00:57,363 INFO L130 PetriNetUnfolder]: 3/88 cut-off events. [2022-11-18 20:00:57,363 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:00:57,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:57,364 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] [2022-11-18 20:00:57,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:00:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:57,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1624898739, now seen corresponding path program 1 times [2022-11-18 20:00:57,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:57,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106530259] [2022-11-18 20:00:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:57,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:57,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:57,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106530259] [2022-11-18 20:00:57,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106530259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:57,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:57,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:00:57,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496336794] [2022-11-18 20:00:58,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:58,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:00:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:00:58,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:00:58,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-18 20:00:58,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 294 transitions, 597 flow. Second operand has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:58,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:58,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-18 20:00:58,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:58,867 INFO L130 PetriNetUnfolder]: 80/945 cut-off events. [2022-11-18 20:00:58,867 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-18 20:00:58,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 945 events. 80/945 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3915 event pairs, 1 based on Foata normal form. 240/1015 useless extension candidates. Maximal degree in co-relation 1133. Up to 54 conditions per place. [2022-11-18 20:00:58,892 INFO L137 encePairwiseOnDemand]: 294/315 looper letters, 60 selfloop transitions, 10 changer transitions 1/322 dead transitions. [2022-11-18 20:00:58,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 322 transitions, 817 flow [2022-11-18 20:00:58,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:00:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:00:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2277 transitions. [2022-11-18 20:00:58,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9035714285714286 [2022-11-18 20:00:58,926 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2277 transitions. [2022-11-18 20:00:58,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2277 transitions. [2022-11-18 20:00:58,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:58,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2277 transitions. [2022-11-18 20:00:58,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 284.625) internal successors, (2277), 8 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:58,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:58,965 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:58,968 INFO L175 Difference]: Start difference. First operand has 280 places, 294 transitions, 597 flow. Second operand 8 states and 2277 transitions. [2022-11-18 20:00:58,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 322 transitions, 817 flow [2022-11-18 20:00:58,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 322 transitions, 801 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:00:58,985 INFO L231 Difference]: Finished difference. Result has 290 places, 289 transitions, 636 flow [2022-11-18 20:00:58,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=290, PETRI_TRANSITIONS=289} [2022-11-18 20:00:58,994 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 10 predicate places. [2022-11-18 20:00:58,994 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 289 transitions, 636 flow [2022-11-18 20:00:58,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:58,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:58,996 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] [2022-11-18 20:00:58,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:00:58,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:00:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:59,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1167745870, now seen corresponding path program 1 times [2022-11-18 20:00:59,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:59,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414766727] [2022-11-18 20:00:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:59,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:59,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:59,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414766727] [2022-11-18 20:00:59,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414766727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:59,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:59,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:00:59,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568076813] [2022-11-18 20:00:59,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:59,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:00:59,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:59,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:00:59,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:00:59,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-18 20:00:59,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 289 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:59,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:59,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-18 20:00:59,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:59,693 INFO L130 PetriNetUnfolder]: 102/1224 cut-off events. [2022-11-18 20:00:59,694 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-18 20:00:59,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 1224 events. 102/1224 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5936 event pairs, 30 based on Foata normal form. 8/1024 useless extension candidates. Maximal degree in co-relation 1524. Up to 105 conditions per place. [2022-11-18 20:00:59,717 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 36 selfloop transitions, 6 changer transitions 0/301 dead transitions. [2022-11-18 20:00:59,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 301 transitions, 749 flow [2022-11-18 20:00:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:00:59,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:00:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-18 20:00:59,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-18 20:00:59,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-18 20:00:59,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-18 20:00:59,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:59,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-18 20:00:59,729 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) [2022-11-18 20:00:59,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:59,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:59,735 INFO L175 Difference]: Start difference. First operand has 290 places, 289 transitions, 636 flow. Second operand 4 states and 1140 transitions. [2022-11-18 20:00:59,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 301 transitions, 749 flow [2022-11-18 20:00:59,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 301 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:00:59,750 INFO L231 Difference]: Finished difference. Result has 293 places, 291 transitions, 674 flow [2022-11-18 20:00:59,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=674, PETRI_PLACES=293, PETRI_TRANSITIONS=291} [2022-11-18 20:00:59,753 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 13 predicate places. [2022-11-18 20:00:59,753 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 291 transitions, 674 flow [2022-11-18 20:00:59,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:59,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:59,756 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] [2022-11-18 20:00:59,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:00:59,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:00:59,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:59,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1355556881, now seen corresponding path program 1 times [2022-11-18 20:00:59,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:59,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255075246] [2022-11-18 20:00:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:59,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:59,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:59,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255075246] [2022-11-18 20:00:59,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255075246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:59,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:59,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:00:59,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131519868] [2022-11-18 20:00:59,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:59,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:00:59,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:59,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:00:59,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:00:59,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-18 20:00:59,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 291 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:59,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:59,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-18 20:00:59,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:01,395 INFO L130 PetriNetUnfolder]: 382/2951 cut-off events. [2022-11-18 20:01:01,395 INFO L131 PetriNetUnfolder]: For 328/333 co-relation queries the response was YES. [2022-11-18 20:01:01,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 2951 events. 382/2951 cut-off events. For 328/333 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 27695 event pairs, 0 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 3620. Up to 294 conditions per place. [2022-11-18 20:01:01,465 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 57 selfloop transitions, 10 changer transitions 0/327 dead transitions. [2022-11-18 20:01:01,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 327 transitions, 885 flow [2022-11-18 20:01:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:01:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:01:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2228 transitions. [2022-11-18 20:01:01,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841269841269841 [2022-11-18 20:01:01,472 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2228 transitions. [2022-11-18 20:01:01,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2228 transitions. [2022-11-18 20:01:01,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:01,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2228 transitions. [2022-11-18 20:01:01,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 278.5) internal successors, (2228), 8 states have internal predecessors, (2228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:01,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:01,490 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:01,490 INFO L175 Difference]: Start difference. First operand has 293 places, 291 transitions, 674 flow. Second operand 8 states and 2228 transitions. [2022-11-18 20:01:01,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 327 transitions, 885 flow [2022-11-18 20:01:01,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 327 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:01:01,501 INFO L231 Difference]: Finished difference. Result has 306 places, 298 transitions, 742 flow [2022-11-18 20:01:01,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=306, PETRI_TRANSITIONS=298} [2022-11-18 20:01:01,505 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 26 predicate places. [2022-11-18 20:01:01,505 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 298 transitions, 742 flow [2022-11-18 20:01:01,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:01,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:01,507 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] [2022-11-18 20:01:01,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:01:01,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:01,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:01,509 INFO L85 PathProgramCache]: Analyzing trace with hash -927408762, now seen corresponding path program 1 times [2022-11-18 20:01:01,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:01,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342858858] [2022-11-18 20:01:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:01,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:01,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:01,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342858858] [2022-11-18 20:01:01,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342858858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:01,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:01,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:01,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193705984] [2022-11-18 20:01:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:01,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:01,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:01,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-18 20:01:01,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 298 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:01,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:01,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-18 20:01:01,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:03,613 INFO L130 PetriNetUnfolder]: 514/4334 cut-off events. [2022-11-18 20:01:03,614 INFO L131 PetriNetUnfolder]: For 624/629 co-relation queries the response was YES. [2022-11-18 20:01:03,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5513 conditions, 4334 events. 514/4334 cut-off events. For 624/629 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41832 event pairs, 180 based on Foata normal form. 28/3321 useless extension candidates. Maximal degree in co-relation 5424. Up to 427 conditions per place. [2022-11-18 20:01:03,722 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 35 selfloop transitions, 6 changer transitions 0/309 dead transitions. [2022-11-18 20:01:03,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 309 transitions, 848 flow [2022-11-18 20:01:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:01:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2022-11-18 20:01:03,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.903968253968254 [2022-11-18 20:01:03,727 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2022-11-18 20:01:03,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2022-11-18 20:01:03,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:03,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2022-11-18 20:01:03,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:03,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:03,737 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:03,737 INFO L175 Difference]: Start difference. First operand has 306 places, 298 transitions, 742 flow. Second operand 4 states and 1139 transitions. [2022-11-18 20:01:03,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 309 transitions, 848 flow [2022-11-18 20:01:03,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 309 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:01:03,748 INFO L231 Difference]: Finished difference. Result has 310 places, 300 transitions, 780 flow [2022-11-18 20:01:03,749 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=780, PETRI_PLACES=310, PETRI_TRANSITIONS=300} [2022-11-18 20:01:03,750 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 30 predicate places. [2022-11-18 20:01:03,751 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 300 transitions, 780 flow [2022-11-18 20:01:03,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:03,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:03,757 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] [2022-11-18 20:01:03,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:01:03,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:03,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1934126745, now seen corresponding path program 1 times [2022-11-18 20:01:03,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:03,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795388049] [2022-11-18 20:01:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:03,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:03,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:03,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795388049] [2022-11-18 20:01:03,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795388049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:03,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:03,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617294109] [2022-11-18 20:01:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:03,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:03,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:03,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:03,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-18 20:01:03,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 300 transitions, 780 flow. Second operand has 4 states, 4 states have (on average 277.25) internal successors, (1109), 4 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:03,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:03,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-18 20:01:03,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:04,762 INFO L130 PetriNetUnfolder]: 110/1602 cut-off events. [2022-11-18 20:01:04,763 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-11-18 20:01:04,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 1602 events. 110/1602 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9018 event pairs, 24 based on Foata normal form. 4/1334 useless extension candidates. Maximal degree in co-relation 2004. Up to 95 conditions per place. [2022-11-18 20:01:04,845 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 37 selfloop transitions, 5 changer transitions 0/310 dead transitions. [2022-11-18 20:01:04,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 310 transitions, 889 flow [2022-11-18 20:01:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:01:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1138 transitions. [2022-11-18 20:01:04,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9031746031746032 [2022-11-18 20:01:04,849 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1138 transitions. [2022-11-18 20:01:04,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1138 transitions. [2022-11-18 20:01:04,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:04,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1138 transitions. [2022-11-18 20:01:04,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:04,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:04,857 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:04,857 INFO L175 Difference]: Start difference. First operand has 310 places, 300 transitions, 780 flow. Second operand 4 states and 1138 transitions. [2022-11-18 20:01:04,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 310 transitions, 889 flow [2022-11-18 20:01:04,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 310 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:01:04,865 INFO L231 Difference]: Finished difference. Result has 313 places, 300 transitions, 791 flow [2022-11-18 20:01:04,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=791, PETRI_PLACES=313, PETRI_TRANSITIONS=300} [2022-11-18 20:01:04,867 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 33 predicate places. [2022-11-18 20:01:04,868 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 300 transitions, 791 flow [2022-11-18 20:01:04,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.25) internal successors, (1109), 4 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:04,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:04,869 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] [2022-11-18 20:01:04,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:01:04,869 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:04,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash -171612259, now seen corresponding path program 1 times [2022-11-18 20:01:04,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:04,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198792138] [2022-11-18 20:01:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:04,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:04,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:04,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198792138] [2022-11-18 20:01:04,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198792138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:04,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:04,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:04,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621499932] [2022-11-18 20:01:04,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:04,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:04,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-18 20:01:04,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 300 transitions, 791 flow. Second operand has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:04,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:04,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-18 20:01:04,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:06,086 INFO L130 PetriNetUnfolder]: 113/1609 cut-off events. [2022-11-18 20:01:06,086 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-11-18 20:01:06,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 1609 events. 113/1609 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9152 event pairs, 0 based on Foata normal form. 0/1339 useless extension candidates. Maximal degree in co-relation 1837. Up to 120 conditions per place. [2022-11-18 20:01:06,163 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 50 selfloop transitions, 11 changer transitions 0/322 dead transitions. [2022-11-18 20:01:06,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 322 transitions, 987 flow [2022-11-18 20:01:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:01:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:01:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2219 transitions. [2022-11-18 20:01:06,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8805555555555555 [2022-11-18 20:01:06,173 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2219 transitions. [2022-11-18 20:01:06,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2219 transitions. [2022-11-18 20:01:06,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:06,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2219 transitions. [2022-11-18 20:01:06,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.375) internal successors, (2219), 8 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:06,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:06,192 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:06,192 INFO L175 Difference]: Start difference. First operand has 313 places, 300 transitions, 791 flow. Second operand 8 states and 2219 transitions. [2022-11-18 20:01:06,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 322 transitions, 987 flow [2022-11-18 20:01:06,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 322 transitions, 975 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:01:06,204 INFO L231 Difference]: Finished difference. Result has 321 places, 302 transitions, 838 flow [2022-11-18 20:01:06,205 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=321, PETRI_TRANSITIONS=302} [2022-11-18 20:01:06,206 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 41 predicate places. [2022-11-18 20:01:06,206 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 302 transitions, 838 flow [2022-11-18 20:01:06,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:06,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:06,208 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] [2022-11-18 20:01:06,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:01:06,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:06,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:06,209 INFO L85 PathProgramCache]: Analyzing trace with hash -835270080, now seen corresponding path program 1 times [2022-11-18 20:01:06,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:06,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333977958] [2022-11-18 20:01:06,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:06,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:06,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:06,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333977958] [2022-11-18 20:01:06,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333977958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:06,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:06,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:06,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131878450] [2022-11-18 20:01:06,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:06,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:06,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:06,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:06,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:06,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 315 [2022-11-18 20:01:06,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 302 transitions, 838 flow. Second operand has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:06,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:06,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 315 [2022-11-18 20:01:06,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:07,284 INFO L130 PetriNetUnfolder]: 125/1627 cut-off events. [2022-11-18 20:01:07,284 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-11-18 20:01:07,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1627 events. 125/1627 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9356 event pairs, 37 based on Foata normal form. 0/1361 useless extension candidates. Maximal degree in co-relation 2126. Up to 128 conditions per place. [2022-11-18 20:01:07,358 INFO L137 encePairwiseOnDemand]: 307/315 looper letters, 44 selfloop transitions, 9 changer transitions 0/317 dead transitions. [2022-11-18 20:01:07,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 317 transitions, 973 flow [2022-11-18 20:01:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:01:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:01:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1674 transitions. [2022-11-18 20:01:07,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-18 20:01:07,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1674 transitions. [2022-11-18 20:01:07,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1674 transitions. [2022-11-18 20:01:07,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:07,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1674 transitions. [2022-11-18 20:01:07,376 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) [2022-11-18 20:01:07,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:07,383 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:07,383 INFO L175 Difference]: Start difference. First operand has 321 places, 302 transitions, 838 flow. Second operand 6 states and 1674 transitions. [2022-11-18 20:01:07,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 317 transitions, 973 flow [2022-11-18 20:01:07,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 317 transitions, 949 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-18 20:01:07,397 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 847 flow [2022-11-18 20:01:07,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=847, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2022-11-18 20:01:07,398 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 41 predicate places. [2022-11-18 20:01:07,400 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 847 flow [2022-11-18 20:01:07,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:07,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:07,401 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] [2022-11-18 20:01:07,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:01:07,402 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:07,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash -52923283, now seen corresponding path program 1 times [2022-11-18 20:01:07,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:07,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812730358] [2022-11-18 20:01:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:07,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:07,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812730358] [2022-11-18 20:01:07,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812730358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:07,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:07,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133772709] [2022-11-18 20:01:07,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:07,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:07,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:07,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:07,544 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-18 20:01:07,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 847 flow. Second operand has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:07,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:07,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-18 20:01:07,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:09,626 INFO L130 PetriNetUnfolder]: 498/4323 cut-off events. [2022-11-18 20:01:09,626 INFO L131 PetriNetUnfolder]: For 935/940 co-relation queries the response was YES. [2022-11-18 20:01:09,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 4323 events. 498/4323 cut-off events. For 935/940 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41792 event pairs, 144 based on Foata normal form. 14/3315 useless extension candidates. Maximal degree in co-relation 5614. Up to 397 conditions per place. [2022-11-18 20:01:09,731 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 36 selfloop transitions, 5 changer transitions 0/313 dead transitions. [2022-11-18 20:01:09,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 313 transitions, 949 flow [2022-11-18 20:01:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:01:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1137 transitions. [2022-11-18 20:01:09,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023809523809524 [2022-11-18 20:01:09,736 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1137 transitions. [2022-11-18 20:01:09,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1137 transitions. [2022-11-18 20:01:09,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:09,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1137 transitions. [2022-11-18 20:01:09,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:09,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:09,768 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:09,768 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 847 flow. Second operand 4 states and 1137 transitions. [2022-11-18 20:01:09,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 313 transitions, 949 flow [2022-11-18 20:01:09,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 313 transitions, 933 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-18 20:01:09,781 INFO L231 Difference]: Finished difference. Result has 322 places, 304 transitions, 846 flow [2022-11-18 20:01:09,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=846, PETRI_PLACES=322, PETRI_TRANSITIONS=304} [2022-11-18 20:01:09,786 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 42 predicate places. [2022-11-18 20:01:09,787 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 304 transitions, 846 flow [2022-11-18 20:01:09,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:09,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:09,788 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] [2022-11-18 20:01:09,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:01:09,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1640620869, now seen corresponding path program 1 times [2022-11-18 20:01:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:09,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514553256] [2022-11-18 20:01:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:09,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514553256] [2022-11-18 20:01:09,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514553256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:09,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:09,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:09,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597083527] [2022-11-18 20:01:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:09,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:09,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:09,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:09,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:09,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-18 20:01:09,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 304 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:09,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:09,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-18 20:01:09,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:11,726 INFO L130 PetriNetUnfolder]: 516/4357 cut-off events. [2022-11-18 20:01:11,726 INFO L131 PetriNetUnfolder]: For 1134/1139 co-relation queries the response was YES. [2022-11-18 20:01:11,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5887 conditions, 4357 events. 516/4357 cut-off events. For 1134/1139 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 44995 event pairs, 0 based on Foata normal form. 0/3338 useless extension candidates. Maximal degree in co-relation 5783. Up to 497 conditions per place. [2022-11-18 20:01:11,806 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 48 selfloop transitions, 11 changer transitions 0/324 dead transitions. [2022-11-18 20:01:11,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 324 transitions, 1027 flow [2022-11-18 20:01:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:01:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:01:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2217 transitions. [2022-11-18 20:01:11,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2022-11-18 20:01:11,813 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2217 transitions. [2022-11-18 20:01:11,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2217 transitions. [2022-11-18 20:01:11,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:11,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2217 transitions. [2022-11-18 20:01:11,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:11,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:11,829 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:11,830 INFO L175 Difference]: Start difference. First operand has 322 places, 304 transitions, 846 flow. Second operand 8 states and 2217 transitions. [2022-11-18 20:01:11,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 324 transitions, 1027 flow [2022-11-18 20:01:11,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 324 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:01:11,841 INFO L231 Difference]: Finished difference. Result has 330 places, 306 transitions, 893 flow [2022-11-18 20:01:11,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=893, PETRI_PLACES=330, PETRI_TRANSITIONS=306} [2022-11-18 20:01:11,843 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 50 predicate places. [2022-11-18 20:01:11,843 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 306 transitions, 893 flow [2022-11-18 20:01:11,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:11,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:11,844 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] [2022-11-18 20:01:11,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:01:11,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2044668126, now seen corresponding path program 1 times [2022-11-18 20:01:11,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:11,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005895392] [2022-11-18 20:01:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:11,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:12,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:12,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005895392] [2022-11-18 20:01:12,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005895392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:12,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:12,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:01:12,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145710619] [2022-11-18 20:01:12,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:12,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:12,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-18 20:01:12,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 306 transitions, 893 flow. Second operand has 8 states, 8 states have (on average 266.125) internal successors, (2129), 8 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:12,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:12,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-18 20:01:12,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:13,205 INFO L130 PetriNetUnfolder]: 150/2135 cut-off events. [2022-11-18 20:01:13,206 INFO L131 PetriNetUnfolder]: For 426/426 co-relation queries the response was YES. [2022-11-18 20:01:13,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 2135 events. 150/2135 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13838 event pairs, 2 based on Foata normal form. 0/1787 useless extension candidates. Maximal degree in co-relation 2294. Up to 91 conditions per place. [2022-11-18 20:01:13,320 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 66 selfloop transitions, 21 changer transitions 0/345 dead transitions. [2022-11-18 20:01:13,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 345 transitions, 1191 flow [2022-11-18 20:01:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:01:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:01:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3247 transitions. [2022-11-18 20:01:13,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858994708994709 [2022-11-18 20:01:13,330 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3247 transitions. [2022-11-18 20:01:13,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3247 transitions. [2022-11-18 20:01:13,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:13,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3247 transitions. [2022-11-18 20:01:13,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:13,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:13,352 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:13,352 INFO L175 Difference]: Start difference. First operand has 330 places, 306 transitions, 893 flow. Second operand 12 states and 3247 transitions. [2022-11-18 20:01:13,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 345 transitions, 1191 flow [2022-11-18 20:01:13,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 345 transitions, 1179 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:01:13,364 INFO L231 Difference]: Finished difference. Result has 341 places, 316 transitions, 1001 flow [2022-11-18 20:01:13,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1001, PETRI_PLACES=341, PETRI_TRANSITIONS=316} [2022-11-18 20:01:13,367 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 61 predicate places. [2022-11-18 20:01:13,367 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 316 transitions, 1001 flow [2022-11-18 20:01:13,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.125) internal successors, (2129), 8 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:13,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:13,368 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] [2022-11-18 20:01:13,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:01:13,369 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:13,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1039798336, now seen corresponding path program 1 times [2022-11-18 20:01:13,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:13,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624229735] [2022-11-18 20:01:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:13,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:13,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624229735] [2022-11-18 20:01:13,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624229735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:13,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:13,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:01:13,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995448510] [2022-11-18 20:01:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:13,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:13,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:13,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:13,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-18 20:01:13,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 316 transitions, 1001 flow. Second operand has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:13,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:13,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-18 20:01:13,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:14,957 INFO L130 PetriNetUnfolder]: 128/1634 cut-off events. [2022-11-18 20:01:14,957 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2022-11-18 20:01:15,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 1634 events. 128/1634 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9444 event pairs, 1 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 2115. Up to 84 conditions per place. [2022-11-18 20:01:15,028 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 65 selfloop transitions, 20 changer transitions 0/349 dead transitions. [2022-11-18 20:01:15,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 349 transitions, 1278 flow [2022-11-18 20:01:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:01:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:01:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3249 transitions. [2022-11-18 20:01:15,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-18 20:01:15,037 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3249 transitions. [2022-11-18 20:01:15,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3249 transitions. [2022-11-18 20:01:15,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:15,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3249 transitions. [2022-11-18 20:01:15,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.75) internal successors, (3249), 12 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:15,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:15,056 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:15,057 INFO L175 Difference]: Start difference. First operand has 341 places, 316 transitions, 1001 flow. Second operand 12 states and 3249 transitions. [2022-11-18 20:01:15,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 349 transitions, 1278 flow [2022-11-18 20:01:15,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 349 transitions, 1262 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 20:01:15,068 INFO L231 Difference]: Finished difference. Result has 352 places, 323 transitions, 1086 flow [2022-11-18 20:01:15,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1086, PETRI_PLACES=352, PETRI_TRANSITIONS=323} [2022-11-18 20:01:15,070 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 72 predicate places. [2022-11-18 20:01:15,070 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 323 transitions, 1086 flow [2022-11-18 20:01:15,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:15,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:15,071 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] [2022-11-18 20:01:15,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:01:15,072 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:15,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:15,072 INFO L85 PathProgramCache]: Analyzing trace with hash 491699742, now seen corresponding path program 1 times [2022-11-18 20:01:15,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:15,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429267734] [2022-11-18 20:01:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:15,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:15,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:15,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429267734] [2022-11-18 20:01:15,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429267734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:15,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:15,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:15,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218588136] [2022-11-18 20:01:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:15,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:15,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:15,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-18 20:01:15,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 323 transitions, 1086 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) [2022-11-18 20:01:15,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:15,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-18 20:01:15,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:17,147 INFO L130 PetriNetUnfolder]: 578/4955 cut-off events. [2022-11-18 20:01:17,147 INFO L131 PetriNetUnfolder]: For 1598/1603 co-relation queries the response was YES. [2022-11-18 20:01:17,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6780 conditions, 4955 events. 578/4955 cut-off events. For 1598/1603 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 51579 event pairs, 222 based on Foata normal form. 14/3804 useless extension candidates. Maximal degree in co-relation 6664. Up to 525 conditions per place. [2022-11-18 20:01:17,239 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 36 selfloop transitions, 5 changer transitions 0/331 dead transitions. [2022-11-18 20:01:17,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 331 transitions, 1188 flow [2022-11-18 20:01:17,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:01:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1135 transitions. [2022-11-18 20:01:17,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9007936507936508 [2022-11-18 20:01:17,244 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1135 transitions. [2022-11-18 20:01:17,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1135 transitions. [2022-11-18 20:01:17,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:17,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1135 transitions. [2022-11-18 20:01:17,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:17,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:17,252 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:17,252 INFO L175 Difference]: Start difference. First operand has 352 places, 323 transitions, 1086 flow. Second operand 4 states and 1135 transitions. [2022-11-18 20:01:17,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 331 transitions, 1188 flow [2022-11-18 20:01:17,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 331 transitions, 1162 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-18 20:01:17,267 INFO L231 Difference]: Finished difference. Result has 349 places, 323 transitions, 1082 flow [2022-11-18 20:01:17,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1082, PETRI_PLACES=349, PETRI_TRANSITIONS=323} [2022-11-18 20:01:17,269 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 69 predicate places. [2022-11-18 20:01:17,269 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 323 transitions, 1082 flow [2022-11-18 20:01:17,270 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) [2022-11-18 20:01:17,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:17,357 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] [2022-11-18 20:01:17,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:01:17,357 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:17,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1708205948, now seen corresponding path program 1 times [2022-11-18 20:01:17,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:17,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964154618] [2022-11-18 20:01:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:17,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:17,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:17,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964154618] [2022-11-18 20:01:17,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964154618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:17,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:17,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:17,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943050001] [2022-11-18 20:01:17,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:17,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:17,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:17,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:17,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-18 20:01:17,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 323 transitions, 1082 flow. Second operand has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:17,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:17,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-18 20:01:17,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:18,924 INFO L130 PetriNetUnfolder]: 206/1781 cut-off events. [2022-11-18 20:01:18,924 INFO L131 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2022-11-18 20:01:18,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 1781 events. 206/1781 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11028 event pairs, 61 based on Foata normal form. 4/1533 useless extension candidates. Maximal degree in co-relation 2904. Up to 226 conditions per place. [2022-11-18 20:01:18,988 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 65 selfloop transitions, 14 changer transitions 0/334 dead transitions. [2022-11-18 20:01:18,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 334 transitions, 1272 flow [2022-11-18 20:01:18,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:01:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:01:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1844 transitions. [2022-11-18 20:01:18,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836281179138322 [2022-11-18 20:01:18,994 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1844 transitions. [2022-11-18 20:01:18,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1844 transitions. [2022-11-18 20:01:18,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:18,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1844 transitions. [2022-11-18 20:01:19,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.42857142857144) internal successors, (1844), 7 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:19,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:19,008 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:19,008 INFO L175 Difference]: Start difference. First operand has 349 places, 323 transitions, 1082 flow. Second operand 7 states and 1844 transitions. [2022-11-18 20:01:19,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 334 transitions, 1272 flow [2022-11-18 20:01:19,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 334 transitions, 1268 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:01:19,021 INFO L231 Difference]: Finished difference. Result has 359 places, 327 transitions, 1151 flow [2022-11-18 20:01:19,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1151, PETRI_PLACES=359, PETRI_TRANSITIONS=327} [2022-11-18 20:01:19,023 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 79 predicate places. [2022-11-18 20:01:19,023 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 327 transitions, 1151 flow [2022-11-18 20:01:19,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:19,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:19,024 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] [2022-11-18 20:01:19,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:01:19,025 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash -687745817, now seen corresponding path program 1 times [2022-11-18 20:01:19,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:19,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830754817] [2022-11-18 20:01:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:19,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:19,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:19,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830754817] [2022-11-18 20:01:19,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830754817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:19,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:19,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431682804] [2022-11-18 20:01:19,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:19,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:19,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:19,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-18 20:01:19,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 327 transitions, 1151 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:19,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:19,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-18 20:01:19,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:20,232 INFO L130 PetriNetUnfolder]: 200/1771 cut-off events. [2022-11-18 20:01:20,232 INFO L131 PetriNetUnfolder]: For 797/797 co-relation queries the response was YES. [2022-11-18 20:01:20,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 1771 events. 200/1771 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10979 event pairs, 50 based on Foata normal form. 4/1543 useless extension candidates. Maximal degree in co-relation 2976. Up to 245 conditions per place. [2022-11-18 20:01:20,309 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 73 selfloop transitions, 16 changer transitions 0/347 dead transitions. [2022-11-18 20:01:20,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 347 transitions, 1413 flow [2022-11-18 20:01:20,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:01:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:01:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1852 transitions. [2022-11-18 20:01:20,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8399092970521542 [2022-11-18 20:01:20,316 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1852 transitions. [2022-11-18 20:01:20,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1852 transitions. [2022-11-18 20:01:20,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:20,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1852 transitions. [2022-11-18 20:01:20,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.57142857142856) internal successors, (1852), 7 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:20,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:20,331 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:20,331 INFO L175 Difference]: Start difference. First operand has 359 places, 327 transitions, 1151 flow. Second operand 7 states and 1852 transitions. [2022-11-18 20:01:20,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 347 transitions, 1413 flow [2022-11-18 20:01:20,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 347 transitions, 1403 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:01:20,347 INFO L231 Difference]: Finished difference. Result has 369 places, 334 transitions, 1248 flow [2022-11-18 20:01:20,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1248, PETRI_PLACES=369, PETRI_TRANSITIONS=334} [2022-11-18 20:01:20,349 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 89 predicate places. [2022-11-18 20:01:20,349 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 334 transitions, 1248 flow [2022-11-18 20:01:20,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:20,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:20,350 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] [2022-11-18 20:01:20,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:01:20,351 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash -562743168, now seen corresponding path program 1 times [2022-11-18 20:01:20,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:20,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216151736] [2022-11-18 20:01:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:20,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:20,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:20,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216151736] [2022-11-18 20:01:20,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216151736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:20,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:20,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:01:20,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521946723] [2022-11-18 20:01:20,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:20,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:20,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:20,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:20,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:20,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-18 20:01:20,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 334 transitions, 1248 flow. Second operand has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:20,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:20,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-18 20:01:20,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:22,728 INFO L130 PetriNetUnfolder]: 734/5120 cut-off events. [2022-11-18 20:01:22,729 INFO L131 PetriNetUnfolder]: For 1980/1985 co-relation queries the response was YES. [2022-11-18 20:01:22,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 5120 events. 734/5120 cut-off events. For 1980/1985 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 56567 event pairs, 6 based on Foata normal form. 0/3903 useless extension candidates. Maximal degree in co-relation 7411. Up to 606 conditions per place. [2022-11-18 20:01:22,818 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 60 selfloop transitions, 20 changer transitions 0/368 dead transitions. [2022-11-18 20:01:22,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 368 transitions, 1497 flow [2022-11-18 20:01:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:01:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:01:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3245 transitions. [2022-11-18 20:01:22,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584656084656085 [2022-11-18 20:01:22,829 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3245 transitions. [2022-11-18 20:01:22,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3245 transitions. [2022-11-18 20:01:22,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:22,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3245 transitions. [2022-11-18 20:01:22,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.4166666666667) internal successors, (3245), 12 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:22,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:22,852 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:22,852 INFO L175 Difference]: Start difference. First operand has 369 places, 334 transitions, 1248 flow. Second operand 12 states and 3245 transitions. [2022-11-18 20:01:22,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 368 transitions, 1497 flow [2022-11-18 20:01:22,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 368 transitions, 1488 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:01:22,875 INFO L231 Difference]: Finished difference. Result has 384 places, 342 transitions, 1339 flow [2022-11-18 20:01:22,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1339, PETRI_PLACES=384, PETRI_TRANSITIONS=342} [2022-11-18 20:01:22,876 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 104 predicate places. [2022-11-18 20:01:22,877 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 342 transitions, 1339 flow [2022-11-18 20:01:22,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:22,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:22,878 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] [2022-11-18 20:01:22,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:01:22,879 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:22,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash -265168108, now seen corresponding path program 1 times [2022-11-18 20:01:22,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:22,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162541992] [2022-11-18 20:01:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:22,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:23,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162541992] [2022-11-18 20:01:23,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162541992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:23,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:23,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:01:23,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925769522] [2022-11-18 20:01:23,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:23,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:23,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:23,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:23,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:23,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-18 20:01:23,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 342 transitions, 1339 flow. Second operand has 8 states, 8 states have (on average 266.375) internal successors, (2131), 8 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:23,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:23,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-18 20:01:23,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:25,536 INFO L130 PetriNetUnfolder]: 674/5046 cut-off events. [2022-11-18 20:01:25,537 INFO L131 PetriNetUnfolder]: For 2726/2731 co-relation queries the response was YES. [2022-11-18 20:01:25,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7739 conditions, 5046 events. 674/5046 cut-off events. For 2726/2731 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 54493 event pairs, 6 based on Foata normal form. 0/3921 useless extension candidates. Maximal degree in co-relation 7600. Up to 546 conditions per place. [2022-11-18 20:01:25,634 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 62 selfloop transitions, 21 changer transitions 0/374 dead transitions. [2022-11-18 20:01:25,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 374 transitions, 1600 flow [2022-11-18 20:01:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:01:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:01:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3247 transitions. [2022-11-18 20:01:25,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858994708994709 [2022-11-18 20:01:25,642 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3247 transitions. [2022-11-18 20:01:25,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3247 transitions. [2022-11-18 20:01:25,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:25,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3247 transitions. [2022-11-18 20:01:25,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:25,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:25,660 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:25,661 INFO L175 Difference]: Start difference. First operand has 384 places, 342 transitions, 1339 flow. Second operand 12 states and 3247 transitions. [2022-11-18 20:01:25,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 374 transitions, 1600 flow [2022-11-18 20:01:25,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 374 transitions, 1582 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 20:01:25,683 INFO L231 Difference]: Finished difference. Result has 395 places, 349 transitions, 1422 flow [2022-11-18 20:01:25,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1422, PETRI_PLACES=395, PETRI_TRANSITIONS=349} [2022-11-18 20:01:25,685 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 115 predicate places. [2022-11-18 20:01:25,685 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 349 transitions, 1422 flow [2022-11-18 20:01:25,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.375) internal successors, (2131), 8 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:25,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:25,686 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] [2022-11-18 20:01:25,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:01:25,687 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1650504552, now seen corresponding path program 1 times [2022-11-18 20:01:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:25,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015462838] [2022-11-18 20:01:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:25,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:25,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015462838] [2022-11-18 20:01:25,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015462838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:25,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:25,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:25,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112238417] [2022-11-18 20:01:25,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:25,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:25,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-18 20:01:25,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 349 transitions, 1422 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:25,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:25,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-18 20:01:25,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:28,216 INFO L130 PetriNetUnfolder]: 1178/5508 cut-off events. [2022-11-18 20:01:28,217 INFO L131 PetriNetUnfolder]: For 3531/3536 co-relation queries the response was YES. [2022-11-18 20:01:28,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 5508 events. 1178/5508 cut-off events. For 3531/3536 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 65759 event pairs, 366 based on Foata normal form. 14/3994 useless extension candidates. Maximal degree in co-relation 9361. Up to 1118 conditions per place. [2022-11-18 20:01:28,330 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 58 selfloop transitions, 15 changer transitions 1/359 dead transitions. [2022-11-18 20:01:28,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 359 transitions, 1594 flow [2022-11-18 20:01:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:01:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:01:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1843 transitions. [2022-11-18 20:01:28,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835827664399093 [2022-11-18 20:01:28,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1843 transitions. [2022-11-18 20:01:28,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1843 transitions. [2022-11-18 20:01:28,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:28,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1843 transitions. [2022-11-18 20:01:28,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.2857142857143) internal successors, (1843), 7 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:28,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:28,349 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:28,349 INFO L175 Difference]: Start difference. First operand has 395 places, 349 transitions, 1422 flow. Second operand 7 states and 1843 transitions. [2022-11-18 20:01:28,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 359 transitions, 1594 flow [2022-11-18 20:01:28,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 359 transitions, 1576 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-18 20:01:28,379 INFO L231 Difference]: Finished difference. Result has 401 places, 353 transitions, 1481 flow [2022-11-18 20:01:28,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1481, PETRI_PLACES=401, PETRI_TRANSITIONS=353} [2022-11-18 20:01:28,380 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 121 predicate places. [2022-11-18 20:01:28,381 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 353 transitions, 1481 flow [2022-11-18 20:01:28,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:28,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:28,382 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] [2022-11-18 20:01:28,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:01:28,383 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1100997573, now seen corresponding path program 1 times [2022-11-18 20:01:28,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:28,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550180362] [2022-11-18 20:01:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:28,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:28,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550180362] [2022-11-18 20:01:28,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550180362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:28,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:28,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:28,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669589453] [2022-11-18 20:01:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:28,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:28,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:28,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-18 20:01:28,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 353 transitions, 1481 flow. Second operand has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:28,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:28,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-18 20:01:28,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:31,054 INFO L130 PetriNetUnfolder]: 1130/5446 cut-off events. [2022-11-18 20:01:31,054 INFO L131 PetriNetUnfolder]: For 4324/4329 co-relation queries the response was YES. [2022-11-18 20:01:31,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 5446 events. 1130/5446 cut-off events. For 4324/4329 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 64188 event pairs, 306 based on Foata normal form. 14/4042 useless extension candidates. Maximal degree in co-relation 9628. Up to 1196 conditions per place. [2022-11-18 20:01:31,161 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 71 selfloop transitions, 17 changer transitions 1/374 dead transitions. [2022-11-18 20:01:31,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 374 transitions, 1749 flow [2022-11-18 20:01:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:01:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:01:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1851 transitions. [2022-11-18 20:01:31,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8394557823129252 [2022-11-18 20:01:31,165 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1851 transitions. [2022-11-18 20:01:31,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1851 transitions. [2022-11-18 20:01:31,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:31,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1851 transitions. [2022-11-18 20:01:31,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:31,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:31,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:31,176 INFO L175 Difference]: Start difference. First operand has 401 places, 353 transitions, 1481 flow. Second operand 7 states and 1851 transitions. [2022-11-18 20:01:31,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 374 transitions, 1749 flow [2022-11-18 20:01:31,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 374 transitions, 1738 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:01:31,205 INFO L231 Difference]: Finished difference. Result has 411 places, 360 transitions, 1581 flow [2022-11-18 20:01:31,205 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1581, PETRI_PLACES=411, PETRI_TRANSITIONS=360} [2022-11-18 20:01:31,206 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 131 predicate places. [2022-11-18 20:01:31,206 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 360 transitions, 1581 flow [2022-11-18 20:01:31,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:31,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:31,207 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] [2022-11-18 20:01:31,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:01:31,208 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:31,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:31,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1863572148, now seen corresponding path program 1 times [2022-11-18 20:01:31,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:31,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666319544] [2022-11-18 20:01:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:31,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:31,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666319544] [2022-11-18 20:01:31,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666319544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:31,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:31,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:01:31,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557462775] [2022-11-18 20:01:31,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:31,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:31,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:31,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:31,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 315 [2022-11-18 20:01:31,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 360 transitions, 1581 flow. Second operand has 8 states, 8 states have (on average 252.5) internal successors, (2020), 8 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:31,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:31,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 315 [2022-11-18 20:01:31,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:34,166 INFO L130 PetriNetUnfolder]: 342/3093 cut-off events. [2022-11-18 20:01:34,166 INFO L131 PetriNetUnfolder]: For 2350/2350 co-relation queries the response was YES. [2022-11-18 20:01:34,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 3093 events. 342/3093 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 24020 event pairs, 4 based on Foata normal form. 0/2770 useless extension candidates. Maximal degree in co-relation 5142. Up to 267 conditions per place. [2022-11-18 20:01:34,317 INFO L137 encePairwiseOnDemand]: 299/315 looper letters, 152 selfloop transitions, 49 changer transitions 0/483 dead transitions. [2022-11-18 20:01:34,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 483 transitions, 2586 flow [2022-11-18 20:01:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:01:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:01:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4661 transitions. [2022-11-18 20:01:34,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8220458553791887 [2022-11-18 20:01:34,326 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4661 transitions. [2022-11-18 20:01:34,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4661 transitions. [2022-11-18 20:01:34,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:34,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4661 transitions. [2022-11-18 20:01:34,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.94444444444446) internal successors, (4661), 18 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,353 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,353 INFO L175 Difference]: Start difference. First operand has 411 places, 360 transitions, 1581 flow. Second operand 18 states and 4661 transitions. [2022-11-18 20:01:34,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 483 transitions, 2586 flow [2022-11-18 20:01:34,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 483 transitions, 2576 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:01:34,388 INFO L231 Difference]: Finished difference. Result has 434 places, 390 transitions, 1880 flow [2022-11-18 20:01:34,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1880, PETRI_PLACES=434, PETRI_TRANSITIONS=390} [2022-11-18 20:01:34,390 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 154 predicate places. [2022-11-18 20:01:34,390 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 390 transitions, 1880 flow [2022-11-18 20:01:34,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 252.5) internal successors, (2020), 8 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:34,391 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] [2022-11-18 20:01:34,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:01:34,392 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:34,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1936160917, now seen corresponding path program 1 times [2022-11-18 20:01:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:34,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139292345] [2022-11-18 20:01:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:34,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:34,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139292345] [2022-11-18 20:01:34,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139292345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:34,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:34,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:34,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262563808] [2022-11-18 20:01:34,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:34,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:34,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:34,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-18 20:01:34,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 390 transitions, 1880 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:34,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-18 20:01:34,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:38,267 INFO L130 PetriNetUnfolder]: 351/6678 cut-off events. [2022-11-18 20:01:38,267 INFO L131 PetriNetUnfolder]: For 4915/4915 co-relation queries the response was YES. [2022-11-18 20:01:38,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11815 conditions, 6678 events. 351/6678 cut-off events. For 4915/4915 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 63382 event pairs, 84 based on Foata normal form. 24/5905 useless extension candidates. Maximal degree in co-relation 11442. Up to 290 conditions per place. [2022-11-18 20:01:38,551 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 37 selfloop transitions, 7 changer transitions 0/403 dead transitions. [2022-11-18 20:01:38,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 403 transitions, 2007 flow [2022-11-18 20:01:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:01:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-18 20:01:38,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-18 20:01:38,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-18 20:01:38,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-18 20:01:38,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:38,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-18 20:01:38,557 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) [2022-11-18 20:01:38,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:38,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:38,559 INFO L175 Difference]: Start difference. First operand has 434 places, 390 transitions, 1880 flow. Second operand 4 states and 1140 transitions. [2022-11-18 20:01:38,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 403 transitions, 2007 flow [2022-11-18 20:01:38,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 403 transitions, 1979 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-11-18 20:01:38,609 INFO L231 Difference]: Finished difference. Result has 438 places, 393 transitions, 1908 flow [2022-11-18 20:01:38,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=438, PETRI_TRANSITIONS=393} [2022-11-18 20:01:38,610 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 158 predicate places. [2022-11-18 20:01:38,610 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 393 transitions, 1908 flow [2022-11-18 20:01:38,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:38,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:38,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:38,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:01:38,611 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:38,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1407132334, now seen corresponding path program 1 times [2022-11-18 20:01:38,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:38,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016135213] [2022-11-18 20:01:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:38,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:38,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:38,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016135213] [2022-11-18 20:01:38,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016135213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:38,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:38,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:38,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545264167] [2022-11-18 20:01:38,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:38,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:38,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:38,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:38,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:01:38,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-18 20:01:38,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 393 transitions, 1908 flow. Second operand has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:38,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:38,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-18 20:01:38,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:43,436 INFO L130 PetriNetUnfolder]: 308/4710 cut-off events. [2022-11-18 20:01:43,436 INFO L131 PetriNetUnfolder]: For 4491/4491 co-relation queries the response was YES. [2022-11-18 20:01:43,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10067 conditions, 4710 events. 308/4710 cut-off events. For 4491/4491 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 40211 event pairs, 1 based on Foata normal form. 2/4379 useless extension candidates. Maximal degree in co-relation 9458. Up to 291 conditions per place. [2022-11-18 20:01:43,739 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 79 selfloop transitions, 22 changer transitions 0/442 dead transitions. [2022-11-18 20:01:43,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 442 transitions, 2346 flow [2022-11-18 20:01:43,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:01:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:01:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2230 transitions. [2022-11-18 20:01:43,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8849206349206349 [2022-11-18 20:01:43,743 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2230 transitions. [2022-11-18 20:01:43,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2230 transitions. [2022-11-18 20:01:43,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:43,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2230 transitions. [2022-11-18 20:01:43,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 278.75) internal successors, (2230), 8 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:43,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:43,752 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:43,752 INFO L175 Difference]: Start difference. First operand has 438 places, 393 transitions, 1908 flow. Second operand 8 states and 2230 transitions. [2022-11-18 20:01:43,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 442 transitions, 2346 flow [2022-11-18 20:01:43,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 442 transitions, 2346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:01:43,796 INFO L231 Difference]: Finished difference. Result has 451 places, 409 transitions, 2144 flow [2022-11-18 20:01:43,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2144, PETRI_PLACES=451, PETRI_TRANSITIONS=409} [2022-11-18 20:01:43,798 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 171 predicate places. [2022-11-18 20:01:43,798 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 409 transitions, 2144 flow [2022-11-18 20:01:43,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:43,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:43,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:43,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:01:43,799 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash 578206890, now seen corresponding path program 1 times [2022-11-18 20:01:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:43,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465978126] [2022-11-18 20:01:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:43,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465978126] [2022-11-18 20:01:43,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465978126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:43,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:43,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:01:43,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722865032] [2022-11-18 20:01:43,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:43,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:01:43,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:43,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:01:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:01:43,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 315 [2022-11-18 20:01:43,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 409 transitions, 2144 flow. Second operand has 8 states, 8 states have (on average 252.625) internal successors, (2021), 8 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:43,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:43,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 315 [2022-11-18 20:01:43,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:57,551 INFO L130 PetriNetUnfolder]: 5007/21126 cut-off events. [2022-11-18 20:01:57,551 INFO L131 PetriNetUnfolder]: For 20871/20887 co-relation queries the response was YES. [2022-11-18 20:01:58,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43108 conditions, 21126 events. 5007/21126 cut-off events. For 20871/20887 co-relation queries the response was YES. Maximal size of possible extension queue 3788. Compared 333107 event pairs, 34 based on Foata normal form. 0/15408 useless extension candidates. Maximal degree in co-relation 42936. Up to 4607 conditions per place. [2022-11-18 20:01:58,349 INFO L137 encePairwiseOnDemand]: 299/315 looper letters, 147 selfloop transitions, 41 changer transitions 0/523 dead transitions. [2022-11-18 20:01:58,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 523 transitions, 3046 flow [2022-11-18 20:01:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:01:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:01:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4659 transitions. [2022-11-18 20:01:58,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216931216931217 [2022-11-18 20:01:58,354 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4659 transitions. [2022-11-18 20:01:58,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4659 transitions. [2022-11-18 20:01:58,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:58,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4659 transitions. [2022-11-18 20:01:58,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.8333333333333) internal successors, (4659), 18 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,365 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,365 INFO L175 Difference]: Start difference. First operand has 451 places, 409 transitions, 2144 flow. Second operand 18 states and 4659 transitions. [2022-11-18 20:01:58,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 523 transitions, 3046 flow [2022-11-18 20:01:58,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 523 transitions, 3036 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 20:01:58,442 INFO L231 Difference]: Finished difference. Result has 473 places, 435 transitions, 2385 flow [2022-11-18 20:01:58,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2385, PETRI_PLACES=473, PETRI_TRANSITIONS=435} [2022-11-18 20:01:58,444 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 193 predicate places. [2022-11-18 20:01:58,444 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 435 transitions, 2385 flow [2022-11-18 20:01:58,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 252.625) internal successors, (2021), 8 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:58,444 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:58,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:01:58,444 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-18 20:01:58,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:58,445 INFO L85 PathProgramCache]: Analyzing trace with hash 744545343, now seen corresponding path program 1 times [2022-11-18 20:01:58,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:58,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112712862] [2022-11-18 20:01:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:58,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:58,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:58,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112712862] [2022-11-18 20:01:58,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112712862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:58,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:58,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23095297] [2022-11-18 20:01:58,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:58,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:58,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:58,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-18 20:01:58,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 435 transitions, 2385 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:58,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:58,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-18 20:01:58,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand