./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:05:36,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:05:36,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:05:36,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:05:36,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:05:36,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:05:36,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:05:36,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:05:36,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:05:36,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:05:36,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:05:36,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:05:36,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:05:36,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:05:36,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:05:36,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:05:36,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:05:36,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:05:36,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:05:36,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:05:36,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:05:36,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:05:37,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:05:37,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:05:37,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:05:37,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:05:37,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:05:37,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:05:37,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:05:37,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:05:37,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:05:37,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:05:37,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:05:37,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:05:37,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:05:37,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:05:37,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:05:37,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:05:37,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:05:37,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:05:37,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:05:37,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:05:37,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:05:37,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:05:37,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:05:37,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:05:37,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:05:37,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:05:37,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:05:37,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:05:37,077 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:05:37,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:05:37,079 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:05:37,079 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:05:37,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:05:37,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:05:37,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:05:37,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:05:37,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:05:37,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:05:37,081 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:05:37,081 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:05:37,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:05:37,081 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:05:37,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:05:37,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:05:37,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:05:37,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:05:37,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:37,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:05:37,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:05:37,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:05:37,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:05:37,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:05:37,085 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:05:37,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:05:37,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:05:37,085 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_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-11-16 12:05:37,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:05:37,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:05:37,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:05:37,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:05:37,463 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:05:37,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-16 12:05:37,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/data/6929c0811/571ab70d3cd34b809a710f10baff4765/FLAG2dbac23db [2022-11-16 12:05:38,079 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:05:38,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-16 12:05:38,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/data/6929c0811/571ab70d3cd34b809a710f10baff4765/FLAG2dbac23db [2022-11-16 12:05:38,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/data/6929c0811/571ab70d3cd34b809a710f10baff4765 [2022-11-16 12:05:38,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:05:38,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:05:38,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:38,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:05:38,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:05:38,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:38,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325f5645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38, skipping insertion in model container [2022-11-16 12:05:38,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:38,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:05:38,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:05:38,801 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-16 12:05:38,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:38,842 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:05:38,907 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-16 12:05:38,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:38,942 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:05:38,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38 WrapperNode [2022-11-16 12:05:38,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:38,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:38,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:05:38,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:05:38,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:38,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,019 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 479 [2022-11-16 12:05:39,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:39,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:05:39,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:05:39,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:05:39,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,084 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:05:39,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:05:39,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:05:39,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:05:39,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (1/1) ... [2022-11-16 12:05:39,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:39,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:39,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:05:39,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:05:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:05:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:05:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:05:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:05:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:05:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:05:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:05:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:05:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:05:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:05:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:05:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:05:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:05:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:05:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:05:39,180 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:05:39,320 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:05:39,322 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:05:40,434 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:05:40,460 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:05:40,460 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:05:40,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:40 BoogieIcfgContainer [2022-11-16 12:05:40,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:05:40,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:05:40,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:05:40,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:05:40,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:05:38" (1/3) ... [2022-11-16 12:05:40,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e46fa63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:40, skipping insertion in model container [2022-11-16 12:05:40,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:38" (2/3) ... [2022-11-16 12:05:40,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e46fa63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:40, skipping insertion in model container [2022-11-16 12:05:40,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:40" (3/3) ... [2022-11-16 12:05:40,474 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-11-16 12:05:40,483 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:05:40,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:05:40,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-16 12:05:40,494 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:05:40,710 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:05:40,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 620 places, 657 transitions, 1338 flow [2022-11-16 12:05:41,160 INFO L130 PetriNetUnfolder]: 47/654 cut-off events. [2022-11-16 12:05:41,160 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:05:41,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 654 events. 47/654 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1082 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 551. Up to 2 conditions per place. [2022-11-16 12:05:41,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 620 places, 657 transitions, 1338 flow [2022-11-16 12:05:41,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 633 transitions, 1281 flow [2022-11-16 12:05:41,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:05:41,218 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;@1d93cf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:05:41,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-11-16 12:05:41,239 INFO L130 PetriNetUnfolder]: 4/101 cut-off events. [2022-11-16 12:05:41,239 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:05:41,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:41,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:41,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1133195272, now seen corresponding path program 1 times [2022-11-16 12:05:41,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:41,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690269413] [2022-11-16 12:05:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:41,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:41,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:41,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690269413] [2022-11-16 12:05:41,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690269413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:41,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:41,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:05:41,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104055024] [2022-11-16 12:05:41,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:41,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:41,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:41,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:41,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:41,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-16 12:05:41,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 633 transitions, 1281 flow. Second operand has 5 states, 5 states have (on average 521.8) internal successors, (2609), 5 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:41,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:42,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-16 12:05:42,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:42,678 INFO L130 PetriNetUnfolder]: 97/1382 cut-off events. [2022-11-16 12:05:42,679 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-16 12:05:42,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 1382 events. 97/1382 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7312 event pairs, 39 based on Foata normal form. 54/1225 useless extension candidates. Maximal degree in co-relation 1050. Up to 150 conditions per place. [2022-11-16 12:05:42,704 INFO L137 encePairwiseOnDemand]: 619/657 looper letters, 80 selfloop transitions, 5 changer transitions 16/603 dead transitions. [2022-11-16 12:05:42,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 603 transitions, 1423 flow [2022-11-16 12:05:42,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:42,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:05:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3239 transitions. [2022-11-16 12:05:42,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.821664129883308 [2022-11-16 12:05:42,737 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3239 transitions. [2022-11-16 12:05:42,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3239 transitions. [2022-11-16 12:05:42,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:42,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3239 transitions. [2022-11-16 12:05:42,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 539.8333333333334) internal successors, (3239), 6 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,781 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,784 INFO L175 Difference]: Start difference. First operand has 597 places, 633 transitions, 1281 flow. Second operand 6 states and 3239 transitions. [2022-11-16 12:05:42,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 603 transitions, 1423 flow [2022-11-16 12:05:42,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 603 transitions, 1414 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:05:42,811 INFO L231 Difference]: Finished difference. Result has 595 places, 587 transitions, 1190 flow [2022-11-16 12:05:42,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1190, PETRI_PLACES=595, PETRI_TRANSITIONS=587} [2022-11-16 12:05:42,821 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -2 predicate places. [2022-11-16 12:05:42,821 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 587 transitions, 1190 flow [2022-11-16 12:05:42,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 521.8) internal successors, (2609), 5 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:42,824 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] [2022-11-16 12:05:42,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:05:42,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:42,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:42,826 INFO L85 PathProgramCache]: Analyzing trace with hash -769314044, now seen corresponding path program 1 times [2022-11-16 12:05:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:42,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900376829] [2022-11-16 12:05:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:42,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:42,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:42,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900376829] [2022-11-16 12:05:42,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900376829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:42,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:42,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:42,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004850052] [2022-11-16 12:05:42,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:42,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:42,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:42,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-16 12:05:42,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 587 transitions, 1190 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:42,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-16 12:05:42,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:43,493 INFO L130 PetriNetUnfolder]: 97/1364 cut-off events. [2022-11-16 12:05:43,493 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 12:05:43,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 1364 events. 97/1364 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7286 event pairs, 39 based on Foata normal form. 0/1171 useless extension candidates. Maximal degree in co-relation 1395. Up to 91 conditions per place. [2022-11-16 12:05:43,516 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/585 dead transitions. [2022-11-16 12:05:43,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 585 transitions, 1234 flow [2022-11-16 12:05:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:05:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:05:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-16 12:05:43,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-16 12:05:43,526 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-16 12:05:43,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-16 12:05:43,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:43,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-16 12:05:43,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:43,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:43,545 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:43,546 INFO L175 Difference]: Start difference. First operand has 595 places, 587 transitions, 1190 flow. Second operand 4 states and 2418 transitions. [2022-11-16 12:05:43,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 585 transitions, 1234 flow [2022-11-16 12:05:43,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 585 transitions, 1224 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:05:43,561 INFO L231 Difference]: Finished difference. Result has 575 places, 585 transitions, 1182 flow [2022-11-16 12:05:43,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1182, PETRI_PLACES=575, PETRI_TRANSITIONS=585} [2022-11-16 12:05:43,563 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -22 predicate places. [2022-11-16 12:05:43,563 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 585 transitions, 1182 flow [2022-11-16 12:05:43,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:43,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:43,566 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:43,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:05:43,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:43,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash 793945238, now seen corresponding path program 1 times [2022-11-16 12:05:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:43,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303486134] [2022-11-16 12:05:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:43,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:43,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303486134] [2022-11-16 12:05:43,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303486134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:43,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:43,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649630800] [2022-11-16 12:05:43,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:43,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:43,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:43,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-16 12:05:43,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 585 transitions, 1182 flow. Second operand has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:43,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:43,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-16 12:05:43,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:44,218 INFO L130 PetriNetUnfolder]: 35/1014 cut-off events. [2022-11-16 12:05:44,219 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-11-16 12:05:44,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 1014 events. 35/1014 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3379 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1058. Up to 44 conditions per place. [2022-11-16 12:05:44,238 INFO L137 encePairwiseOnDemand]: 637/657 looper letters, 58 selfloop transitions, 14 changer transitions 0/616 dead transitions. [2022-11-16 12:05:44,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 616 transitions, 1394 flow [2022-11-16 12:05:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:05:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3003 transitions. [2022-11-16 12:05:44,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141552511415525 [2022-11-16 12:05:44,247 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3003 transitions. [2022-11-16 12:05:44,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3003 transitions. [2022-11-16 12:05:44,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:44,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3003 transitions. [2022-11-16 12:05:44,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:44,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:44,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:44,272 INFO L175 Difference]: Start difference. First operand has 575 places, 585 transitions, 1182 flow. Second operand 5 states and 3003 transitions. [2022-11-16 12:05:44,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 616 transitions, 1394 flow [2022-11-16 12:05:44,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 616 transitions, 1388 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:05:44,300 INFO L231 Difference]: Finished difference. Result has 579 places, 596 transitions, 1280 flow [2022-11-16 12:05:44,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=579, PETRI_TRANSITIONS=596} [2022-11-16 12:05:44,304 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -18 predicate places. [2022-11-16 12:05:44,305 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 596 transitions, 1280 flow [2022-11-16 12:05:44,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:44,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:44,307 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:44,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:05:44,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:44,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1600508096, now seen corresponding path program 1 times [2022-11-16 12:05:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:44,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053745902] [2022-11-16 12:05:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:44,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:44,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:44,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053745902] [2022-11-16 12:05:44,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053745902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:44,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:44,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:05:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468628204] [2022-11-16 12:05:44,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:44,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:05:44,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:44,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:05:44,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:44,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 657 [2022-11-16 12:05:44,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 596 transitions, 1280 flow. Second operand has 8 states, 8 states have (on average 493.25) internal successors, (3946), 8 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:44,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:44,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 657 [2022-11-16 12:05:44,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:45,801 INFO L130 PetriNetUnfolder]: 192/2558 cut-off events. [2022-11-16 12:05:45,802 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-16 12:05:45,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 2558 events. 192/2558 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 18459 event pairs, 78 based on Foata normal form. 0/2187 useless extension candidates. Maximal degree in co-relation 1435. Up to 277 conditions per place. [2022-11-16 12:05:45,846 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 110 selfloop transitions, 11 changer transitions 0/597 dead transitions. [2022-11-16 12:05:45,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 597 transitions, 1521 flow [2022-11-16 12:05:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:05:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:05:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4518 transitions. [2022-11-16 12:05:45,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640791476407914 [2022-11-16 12:05:45,860 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4518 transitions. [2022-11-16 12:05:45,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4518 transitions. [2022-11-16 12:05:45,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:45,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4518 transitions. [2022-11-16 12:05:45,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.0) internal successors, (4518), 9 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:45,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:45,896 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:45,896 INFO L175 Difference]: Start difference. First operand has 579 places, 596 transitions, 1280 flow. Second operand 9 states and 4518 transitions. [2022-11-16 12:05:45,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 597 transitions, 1521 flow [2022-11-16 12:05:45,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 597 transitions, 1512 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 12:05:45,914 INFO L231 Difference]: Finished difference. Result has 587 places, 595 transitions, 1292 flow [2022-11-16 12:05:45,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1292, PETRI_PLACES=587, PETRI_TRANSITIONS=595} [2022-11-16 12:05:45,917 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -10 predicate places. [2022-11-16 12:05:45,917 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 595 transitions, 1292 flow [2022-11-16 12:05:45,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 493.25) internal successors, (3946), 8 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:45,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:45,920 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:45,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:05:45,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:45,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:45,921 INFO L85 PathProgramCache]: Analyzing trace with hash -861806634, now seen corresponding path program 1 times [2022-11-16 12:05:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:45,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339440938] [2022-11-16 12:05:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:46,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:46,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339440938] [2022-11-16 12:05:46,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339440938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:46,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108968428] [2022-11-16 12:05:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:46,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:46,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:46,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:46,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:05:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:46,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:05:46,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:46,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:46,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108968428] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:46,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:46,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:05:46,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608064901] [2022-11-16 12:05:46,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:46,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:05:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:46,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:05:46,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:05:46,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-16 12:05:46,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 595 transitions, 1292 flow. Second operand has 12 states, 12 states have (on average 587.6666666666666) internal successors, (7052), 12 states have internal predecessors, (7052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:46,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:46,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-16 12:05:46,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:47,639 INFO L130 PetriNetUnfolder]: 85/2293 cut-off events. [2022-11-16 12:05:47,639 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-16 12:05:47,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 2293 events. 85/2293 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12864 event pairs, 0 based on Foata normal form. 9/2029 useless extension candidates. Maximal degree in co-relation 2277. Up to 34 conditions per place. [2022-11-16 12:05:47,671 INFO L137 encePairwiseOnDemand]: 634/657 looper letters, 108 selfloop transitions, 61 changer transitions 0/713 dead transitions. [2022-11-16 12:05:47,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 713 transitions, 1974 flow [2022-11-16 12:05:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:05:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:05:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 10708 transitions. [2022-11-16 12:05:47,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9054625401657365 [2022-11-16 12:05:47,692 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 10708 transitions. [2022-11-16 12:05:47,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 10708 transitions. [2022-11-16 12:05:47,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:47,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 10708 transitions. [2022-11-16 12:05:47,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 594.8888888888889) internal successors, (10708), 18 states have internal predecessors, (10708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:47,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 657.0) internal successors, (12483), 19 states have internal predecessors, (12483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:47,746 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 657.0) internal successors, (12483), 19 states have internal predecessors, (12483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:47,746 INFO L175 Difference]: Start difference. First operand has 587 places, 595 transitions, 1292 flow. Second operand 18 states and 10708 transitions. [2022-11-16 12:05:47,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 713 transitions, 1974 flow [2022-11-16 12:05:47,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 713 transitions, 1948 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:05:47,761 INFO L231 Difference]: Finished difference. Result has 601 places, 637 transitions, 1633 flow [2022-11-16 12:05:47,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1633, PETRI_PLACES=601, PETRI_TRANSITIONS=637} [2022-11-16 12:05:47,764 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 4 predicate places. [2022-11-16 12:05:47,764 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 637 transitions, 1633 flow [2022-11-16 12:05:47,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 587.6666666666666) internal successors, (7052), 12 states have internal predecessors, (7052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:47,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:47,767 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:47,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:05:47,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:47,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:47,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash -946200399, now seen corresponding path program 1 times [2022-11-16 12:05:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:47,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490732558] [2022-11-16 12:05:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:47,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:48,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:48,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490732558] [2022-11-16 12:05:48,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490732558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:48,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176463266] [2022-11-16 12:05:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:48,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:48,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:48,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:48,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:05:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:48,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:05:48,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:48,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:48,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176463266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:48,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:05:48,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:05:48,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818692999] [2022-11-16 12:05:48,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:48,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:05:48,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:48,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:05:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:48,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-16 12:05:48,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 637 transitions, 1633 flow. Second operand has 6 states, 6 states have (on average 587.3333333333334) internal successors, (3524), 6 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:48,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:48,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-16 12:05:48,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:49,329 INFO L130 PetriNetUnfolder]: 85/2281 cut-off events. [2022-11-16 12:05:49,329 INFO L131 PetriNetUnfolder]: For 194/204 co-relation queries the response was YES. [2022-11-16 12:05:49,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2626 conditions, 2281 events. 85/2281 cut-off events. For 194/204 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12805 event pairs, 0 based on Foata normal form. 12/2020 useless extension candidates. Maximal degree in co-relation 2313. Up to 68 conditions per place. [2022-11-16 12:05:49,367 INFO L137 encePairwiseOnDemand]: 640/657 looper letters, 58 selfloop transitions, 42 changer transitions 0/644 dead transitions. [2022-11-16 12:05:49,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 644 transitions, 1802 flow [2022-11-16 12:05:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:05:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:05:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4165 transitions. [2022-11-16 12:05:49,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9056316590563166 [2022-11-16 12:05:49,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4165 transitions. [2022-11-16 12:05:49,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4165 transitions. [2022-11-16 12:05:49,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:49,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4165 transitions. [2022-11-16 12:05:49,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,409 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,409 INFO L175 Difference]: Start difference. First operand has 601 places, 637 transitions, 1633 flow. Second operand 7 states and 4165 transitions. [2022-11-16 12:05:49,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 644 transitions, 1802 flow [2022-11-16 12:05:49,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 644 transitions, 1696 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-11-16 12:05:49,433 INFO L231 Difference]: Finished difference. Result has 595 places, 625 transitions, 1530 flow [2022-11-16 12:05:49,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1530, PETRI_PLACES=595, PETRI_TRANSITIONS=625} [2022-11-16 12:05:49,437 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -2 predicate places. [2022-11-16 12:05:49,437 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 625 transitions, 1530 flow [2022-11-16 12:05:49,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 587.3333333333334) internal successors, (3524), 6 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:49,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:49,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:49,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:49,646 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:49,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1389208576, now seen corresponding path program 1 times [2022-11-16 12:05:49,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:49,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535355617] [2022-11-16 12:05:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:49,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:05:49,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:49,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535355617] [2022-11-16 12:05:49,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535355617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:49,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:49,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:05:49,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305127480] [2022-11-16 12:05:49,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:49,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:49,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:49,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:49,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:49,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-16 12:05:49,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 625 transitions, 1530 flow. Second operand has 5 states, 5 states have (on average 523.4) internal successors, (2617), 5 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:49,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-16 12:05:49,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:51,637 INFO L130 PetriNetUnfolder]: 330/4937 cut-off events. [2022-11-16 12:05:51,637 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-11-16 12:05:51,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5621 conditions, 4937 events. 330/4937 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 41234 event pairs, 105 based on Foata normal form. 0/4213 useless extension candidates. Maximal degree in co-relation 5320. Up to 451 conditions per place. [2022-11-16 12:05:51,714 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 80 selfloop transitions, 5 changer transitions 0/623 dead transitions. [2022-11-16 12:05:51,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 623 transitions, 1696 flow [2022-11-16 12:05:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:05:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2677 transitions. [2022-11-16 12:05:51,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149162861491629 [2022-11-16 12:05:51,721 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2677 transitions. [2022-11-16 12:05:51,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2677 transitions. [2022-11-16 12:05:51,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:51,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2677 transitions. [2022-11-16 12:05:51,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 535.4) internal successors, (2677), 5 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:51,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:51,736 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:51,737 INFO L175 Difference]: Start difference. First operand has 595 places, 625 transitions, 1530 flow. Second operand 5 states and 2677 transitions. [2022-11-16 12:05:51,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 623 transitions, 1696 flow [2022-11-16 12:05:51,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 623 transitions, 1644 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:05:51,751 INFO L231 Difference]: Finished difference. Result has 592 places, 623 transitions, 1484 flow [2022-11-16 12:05:51,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1484, PETRI_PLACES=592, PETRI_TRANSITIONS=623} [2022-11-16 12:05:51,753 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -5 predicate places. [2022-11-16 12:05:51,753 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 623 transitions, 1484 flow [2022-11-16 12:05:51,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 523.4) internal successors, (2617), 5 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:51,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:51,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:51,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:05:51,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash -115791918, now seen corresponding path program 1 times [2022-11-16 12:05:51,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:51,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883636051] [2022-11-16 12:05:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:51,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:05:51,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:51,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883636051] [2022-11-16 12:05:51,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883636051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:51,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:51,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:51,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234183014] [2022-11-16 12:05:51,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:51,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:51,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:51,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:51,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:51,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-16 12:05:51,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 623 transitions, 1484 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:51,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:51,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-16 12:05:51,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:53,638 INFO L130 PetriNetUnfolder]: 330/4928 cut-off events. [2022-11-16 12:05:53,639 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-16 12:05:53,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 4928 events. 330/4928 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 41063 event pairs, 105 based on Foata normal form. 0/4213 useless extension candidates. Maximal degree in co-relation 5310. Up to 297 conditions per place. [2022-11-16 12:05:53,714 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/621 dead transitions. [2022-11-16 12:05:53,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 621 transitions, 1528 flow [2022-11-16 12:05:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:05:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:05:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-16 12:05:53,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-16 12:05:53,721 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-16 12:05:53,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-16 12:05:53,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:53,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-16 12:05:53,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:53,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:53,739 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:53,739 INFO L175 Difference]: Start difference. First operand has 592 places, 623 transitions, 1484 flow. Second operand 4 states and 2418 transitions. [2022-11-16 12:05:53,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 621 transitions, 1528 flow [2022-11-16 12:05:53,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 621 transitions, 1518 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:05:53,756 INFO L231 Difference]: Finished difference. Result has 589 places, 621 transitions, 1476 flow [2022-11-16 12:05:53,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1476, PETRI_PLACES=589, PETRI_TRANSITIONS=621} [2022-11-16 12:05:53,760 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -8 predicate places. [2022-11-16 12:05:53,761 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 621 transitions, 1476 flow [2022-11-16 12:05:53,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:53,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:53,762 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:05:53,763 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:53,764 INFO L85 PathProgramCache]: Analyzing trace with hash -661261162, now seen corresponding path program 2 times [2022-11-16 12:05:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:53,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857986018] [2022-11-16 12:05:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:53,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:54,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:54,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857986018] [2022-11-16 12:05:54,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857986018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:54,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102274662] [2022-11-16 12:05:54,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:05:54,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:54,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:54,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:05:54,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:05:54,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:54,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:05:54,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:05:54,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:05:54,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102274662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:54,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:54,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2022-11-16 12:05:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851061450] [2022-11-16 12:05:54,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:54,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:05:54,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:54,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:05:54,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:05:54,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 657 [2022-11-16 12:05:54,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 621 transitions, 1476 flow. Second operand has 17 states, 17 states have (on average 554.8235294117648) internal successors, (9432), 17 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:54,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:54,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 657 [2022-11-16 12:05:54,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:58,962 INFO L130 PetriNetUnfolder]: 672/8558 cut-off events. [2022-11-16 12:05:58,962 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2022-11-16 12:05:59,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9771 conditions, 8558 events. 672/8558 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 84983 event pairs, 273 based on Foata normal form. 6/7290 useless extension candidates. Maximal degree in co-relation 9711. Up to 126 conditions per place. [2022-11-16 12:05:59,081 INFO L137 encePairwiseOnDemand]: 629/657 looper letters, 213 selfloop transitions, 95 changer transitions 0/818 dead transitions. [2022-11-16 12:05:59,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 818 transitions, 2618 flow [2022-11-16 12:05:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 12:05:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-16 12:05:59,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 26762 transitions. [2022-11-16 12:05:59,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486174530695079 [2022-11-16 12:05:59,216 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 26762 transitions. [2022-11-16 12:05:59,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 26762 transitions. [2022-11-16 12:05:59,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:59,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 26762 transitions. [2022-11-16 12:05:59,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 557.5416666666666) internal successors, (26762), 48 states have internal predecessors, (26762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:59,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 657.0) internal successors, (32193), 49 states have internal predecessors, (32193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:59,364 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 657.0) internal successors, (32193), 49 states have internal predecessors, (32193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:59,364 INFO L175 Difference]: Start difference. First operand has 589 places, 621 transitions, 1476 flow. Second operand 48 states and 26762 transitions. [2022-11-16 12:05:59,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 818 transitions, 2618 flow [2022-11-16 12:05:59,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 818 transitions, 2612 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:05:59,386 INFO L231 Difference]: Finished difference. Result has 636 places, 660 transitions, 1860 flow [2022-11-16 12:05:59,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1860, PETRI_PLACES=636, PETRI_TRANSITIONS=660} [2022-11-16 12:05:59,389 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 39 predicate places. [2022-11-16 12:05:59,389 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 660 transitions, 1860 flow [2022-11-16 12:05:59,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 554.8235294117648) internal successors, (9432), 17 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:59,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:59,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:59,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:59,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:59,600 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:05:59,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:59,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1424121864, now seen corresponding path program 1 times [2022-11-16 12:05:59,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:59,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166796019] [2022-11-16 12:05:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:59,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:05:59,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:59,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166796019] [2022-11-16 12:05:59,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166796019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:59,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:59,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:05:59,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931328814] [2022-11-16 12:05:59,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:59,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:05:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:05:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:59,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 657 [2022-11-16 12:05:59,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 660 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 495.5) internal successors, (3964), 8 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:59,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:59,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 657 [2022-11-16 12:05:59,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:02,396 INFO L130 PetriNetUnfolder]: 461/6822 cut-off events. [2022-11-16 12:06:02,396 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2022-11-16 12:06:02,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7952 conditions, 6822 events. 461/6822 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 61752 event pairs, 147 based on Foata normal form. 1/5838 useless extension candidates. Maximal degree in co-relation 7552. Up to 682 conditions per place. [2022-11-16 12:06:02,469 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 154 selfloop transitions, 21 changer transitions 0/660 dead transitions. [2022-11-16 12:06:02,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 660 transitions, 2202 flow [2022-11-16 12:06:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:06:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:06:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4518 transitions. [2022-11-16 12:06:02,476 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640791476407914 [2022-11-16 12:06:02,476 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4518 transitions. [2022-11-16 12:06:02,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4518 transitions. [2022-11-16 12:06:02,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:02,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4518 transitions. [2022-11-16 12:06:02,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.0) internal successors, (4518), 9 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:02,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:02,498 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:02,499 INFO L175 Difference]: Start difference. First operand has 636 places, 660 transitions, 1860 flow. Second operand 9 states and 4518 transitions. [2022-11-16 12:06:02,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 660 transitions, 2202 flow [2022-11-16 12:06:02,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 660 transitions, 2079 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-16 12:06:02,515 INFO L231 Difference]: Finished difference. Result has 629 places, 658 transitions, 1767 flow [2022-11-16 12:06:02,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1767, PETRI_PLACES=629, PETRI_TRANSITIONS=658} [2022-11-16 12:06:02,517 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 32 predicate places. [2022-11-16 12:06:02,517 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 658 transitions, 1767 flow [2022-11-16 12:06:02,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 495.5) internal successors, (3964), 8 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:02,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:02,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:02,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:06:02,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:06:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -171416725, now seen corresponding path program 1 times [2022-11-16 12:06:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:02,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765341944] [2022-11-16 12:06:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:02,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:02,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765341944] [2022-11-16 12:06:02,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765341944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:02,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:02,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:06:02,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194486677] [2022-11-16 12:06:02,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:02,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:06:02,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:06:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:06:02,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-16 12:06:02,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 658 transitions, 1767 flow. Second operand has 5 states, 5 states have (on average 525.0) internal successors, (2625), 5 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:02,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:02,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-16 12:06:02,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:05,469 INFO L130 PetriNetUnfolder]: 671/8321 cut-off events. [2022-11-16 12:06:05,469 INFO L131 PetriNetUnfolder]: For 322/357 co-relation queries the response was YES. [2022-11-16 12:06:05,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9471 conditions, 8321 events. 671/8321 cut-off events. For 322/357 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 82555 event pairs, 273 based on Foata normal form. 0/7076 useless extension candidates. Maximal degree in co-relation 9134. Up to 814 conditions per place. [2022-11-16 12:06:05,559 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 80 selfloop transitions, 5 changer transitions 0/656 dead transitions. [2022-11-16 12:06:05,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 656 transitions, 1933 flow [2022-11-16 12:06:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:06:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:06:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2677 transitions. [2022-11-16 12:06:05,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149162861491629 [2022-11-16 12:06:05,570 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2677 transitions. [2022-11-16 12:06:05,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2677 transitions. [2022-11-16 12:06:05,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:05,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2677 transitions. [2022-11-16 12:06:05,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 535.4) internal successors, (2677), 5 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,589 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,590 INFO L175 Difference]: Start difference. First operand has 629 places, 658 transitions, 1767 flow. Second operand 5 states and 2677 transitions. [2022-11-16 12:06:05,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 656 transitions, 1933 flow [2022-11-16 12:06:05,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 656 transitions, 1893 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:06:05,605 INFO L231 Difference]: Finished difference. Result has 624 places, 656 transitions, 1733 flow [2022-11-16 12:06:05,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1733, PETRI_PLACES=624, PETRI_TRANSITIONS=656} [2022-11-16 12:06:05,608 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 27 predicate places. [2022-11-16 12:06:05,608 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 656 transitions, 1733 flow [2022-11-16 12:06:05,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 525.0) internal successors, (2625), 5 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:05,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:05,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:06:05,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:06:05,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:05,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1018950175, now seen corresponding path program 1 times [2022-11-16 12:06:05,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:05,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203357970] [2022-11-16 12:06:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:05,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:05,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203357970] [2022-11-16 12:06:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203357970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:05,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:05,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:06:05,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471918638] [2022-11-16 12:06:05,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:05,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:05,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:05,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:05,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:05,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-16 12:06:05,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 656 transitions, 1733 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:05,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-16 12:06:05,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:08,368 INFO L130 PetriNetUnfolder]: 671/8308 cut-off events. [2022-11-16 12:06:08,368 INFO L131 PetriNetUnfolder]: For 289/324 co-relation queries the response was YES. [2022-11-16 12:06:08,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9222 conditions, 8308 events. 671/8308 cut-off events. For 289/324 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 82443 event pairs, 273 based on Foata normal form. 0/7076 useless extension candidates. Maximal degree in co-relation 9103. Up to 604 conditions per place. [2022-11-16 12:06:08,477 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/654 dead transitions. [2022-11-16 12:06:08,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 654 transitions, 1777 flow [2022-11-16 12:06:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:06:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:06:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-16 12:06:08,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-16 12:06:08,491 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-16 12:06:08,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-16 12:06:08,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:08,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-16 12:06:08,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:08,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:08,506 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:08,506 INFO L175 Difference]: Start difference. First operand has 624 places, 656 transitions, 1733 flow. Second operand 4 states and 2418 transitions. [2022-11-16 12:06:08,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 654 transitions, 1777 flow [2022-11-16 12:06:08,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 654 transitions, 1767 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:06:08,524 INFO L231 Difference]: Finished difference. Result has 621 places, 654 transitions, 1725 flow [2022-11-16 12:06:08,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1725, PETRI_PLACES=621, PETRI_TRANSITIONS=654} [2022-11-16 12:06:08,526 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 24 predicate places. [2022-11-16 12:06:08,527 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 654 transitions, 1725 flow [2022-11-16 12:06:08,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:08,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:08,528 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:08,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:06:08,529 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:06:08,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1389492238, now seen corresponding path program 1 times [2022-11-16 12:06:08,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:08,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737437332] [2022-11-16 12:06:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:08,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:06:09,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:09,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737437332] [2022-11-16 12:06:09,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737437332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:09,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408265632] [2022-11-16 12:06:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:09,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:09,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:09,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:09,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:06:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:09,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:06:09,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:06:09,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:06:09,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408265632] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:09,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:06:09,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 12:06:09,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246790211] [2022-11-16 12:06:09,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:09,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:06:09,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:06:09,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:06:09,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-16 12:06:09,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 654 transitions, 1725 flow. Second operand has 32 states, 32 states have (on average 588.5) internal successors, (18832), 32 states have internal predecessors, (18832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:09,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:09,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-16 12:06:09,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:12,791 INFO L130 PetriNetUnfolder]: 254/6440 cut-off events. [2022-11-16 12:06:12,791 INFO L131 PetriNetUnfolder]: For 730/760 co-relation queries the response was YES. [2022-11-16 12:06:12,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 6440 events. 254/6440 cut-off events. For 730/760 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 50678 event pairs, 0 based on Foata normal form. 16/5781 useless extension candidates. Maximal degree in co-relation 7404. Up to 84 conditions per place. [2022-11-16 12:06:12,837 INFO L137 encePairwiseOnDemand]: 638/657 looper letters, 306 selfloop transitions, 158 changer transitions 0/1005 dead transitions. [2022-11-16 12:06:12,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 1005 transitions, 4035 flow [2022-11-16 12:06:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:06:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 12:06:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 26220 transitions. [2022-11-16 12:06:12,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070153590701536 [2022-11-16 12:06:12,870 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 26220 transitions. [2022-11-16 12:06:12,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 26220 transitions. [2022-11-16 12:06:12,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:12,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 26220 transitions. [2022-11-16 12:06:12,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 595.9090909090909) internal successors, (26220), 44 states have internal predecessors, (26220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:12,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 657.0) internal successors, (29565), 45 states have internal predecessors, (29565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:12,960 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 657.0) internal successors, (29565), 45 states have internal predecessors, (29565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:12,961 INFO L175 Difference]: Start difference. First operand has 621 places, 654 transitions, 1725 flow. Second operand 44 states and 26220 transitions. [2022-11-16 12:06:12,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 1005 transitions, 4035 flow [2022-11-16 12:06:12,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 1005 transitions, 4029 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:06:12,988 INFO L231 Difference]: Finished difference. Result has 670 places, 747 transitions, 2723 flow [2022-11-16 12:06:12,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2723, PETRI_PLACES=670, PETRI_TRANSITIONS=747} [2022-11-16 12:06:12,991 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 73 predicate places. [2022-11-16 12:06:12,992 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 747 transitions, 2723 flow [2022-11-16 12:06:12,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 588.5) internal successors, (18832), 32 states have internal predecessors, (18832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:12,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:12,997 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:13,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:13,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:13,214 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:06:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1330110677, now seen corresponding path program 1 times [2022-11-16 12:06:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:13,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473862714] [2022-11-16 12:06:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:13,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:13,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473862714] [2022-11-16 12:06:13,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473862714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:13,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:13,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:06:13,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192325921] [2022-11-16 12:06:13,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:13,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:13,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:13,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:13,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:13,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-16 12:06:13,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 747 transitions, 2723 flow. Second operand has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:13,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:13,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-16 12:06:13,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:16,691 INFO L130 PetriNetUnfolder]: 464/10955 cut-off events. [2022-11-16 12:06:16,691 INFO L131 PetriNetUnfolder]: For 941/1001 co-relation queries the response was YES. [2022-11-16 12:06:16,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12910 conditions, 10955 events. 464/10955 cut-off events. For 941/1001 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 105622 event pairs, 0 based on Foata normal form. 0/9695 useless extension candidates. Maximal degree in co-relation 12242. Up to 646 conditions per place. [2022-11-16 12:06:16,804 INFO L137 encePairwiseOnDemand]: 637/657 looper letters, 58 selfloop transitions, 14 changer transitions 0/778 dead transitions. [2022-11-16 12:06:16,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 778 transitions, 2935 flow [2022-11-16 12:06:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:06:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:06:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3003 transitions. [2022-11-16 12:06:16,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141552511415525 [2022-11-16 12:06:16,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3003 transitions. [2022-11-16 12:06:16,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3003 transitions. [2022-11-16 12:06:16,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:16,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3003 transitions. [2022-11-16 12:06:16,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:16,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:16,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:16,818 INFO L175 Difference]: Start difference. First operand has 670 places, 747 transitions, 2723 flow. Second operand 5 states and 3003 transitions. [2022-11-16 12:06:16,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 778 transitions, 2935 flow [2022-11-16 12:06:16,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 778 transitions, 2835 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-16 12:06:16,842 INFO L231 Difference]: Finished difference. Result has 662 places, 758 transitions, 2727 flow [2022-11-16 12:06:16,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2727, PETRI_PLACES=662, PETRI_TRANSITIONS=758} [2022-11-16 12:06:16,844 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 65 predicate places. [2022-11-16 12:06:16,844 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 758 transitions, 2727 flow [2022-11-16 12:06:16,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:16,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:16,845 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:16,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:06:16,846 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-16 12:06:16,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:16,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2077222249, now seen corresponding path program 1 times [2022-11-16 12:06:16,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:16,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858209982] [2022-11-16 12:06:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:16,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:17,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:17,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858209982] [2022-11-16 12:06:17,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858209982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:17,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333801525] [2022-11-16 12:06:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:17,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:17,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:17,005 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:17,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f721e40f-9b6b-4f11-828a-57bae189bd6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:06:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:17,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:06:17,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:06:17,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:06:18,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333801525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:18,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:06:18,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-11-16 12:06:18,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694046538] [2022-11-16 12:06:18,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:18,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:06:18,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:06:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:06:18,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 504 out of 657 [2022-11-16 12:06:18,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 758 transitions, 2727 flow. Second operand has 25 states, 25 states have (on average 509.76) internal successors, (12744), 25 states have internal predecessors, (12744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:18,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:18,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 504 of 657 [2022-11-16 12:06:18,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand